UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUER
PURSUANT TO RULE 13a-16 OR 15d-16
UNDER THE SECURITIES EXCHANGE ACT OF 1934
For the month of May, 2019
Commission File Number 001-36487

Atlantica Yield plc
(Exact name of Registrant as Specified in its Charter)

Not Applicable
(Translation of Registrant’s name into English)

Great West House, GW1, 17th floor
Great West Road
Brentford, TW8 9DF
United Kingdom
Tel.: +44 20 7098 4384

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F:

☒ Form 20-F |  | ☐ Form 40-F

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1): ☐
Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7): ☐

Q1 2019 Earnings PresentationMay 10, 2019

DISCLAIMER Forward Looking StatementsThis presentation contains forward-looking statements. These forward-looking statements include, but are not limited to, all statements other than statements of historical facts contained in this presentation, including, without limitation, those regarding our future financial position and results of operations, our strategy, plans, objectives, goals and targets, future developments in the markets in which we operate or are seeking to operate or anticipated regulatory changes in the markets in which we operate or intend to operate. In some cases, you can identify forward-looking statements by terminology such as "aim," "anticipate," "believe," "continue," "could," "estimate," "expect," "forecast," "guidance," "intend," "is likely to," "may," "plan," "potential," "predict," "projected," "should" or "will" or the negative of such terms or other similar expressions or terminology.By their nature, forward-looking statements involve risks and uncertainties because they relate to events and depend on circumstances that may or may not occur in the future. Forward-looking statements speak only as of the date of this presentation and are not guarantees of future performance and are based on numerous assumptions. Our actual results of operations, financial condition and the development of events may differ materially from (and be more negative than) those made in, or suggested by, the forward-looking statements. Except as required by law, we do not undertake any obligation to update any forward-looking statements to reflect events or circumstances after the date hereof or to reflect the occurrence of anticipated or unanticipated events or circumstances.Investors should read the section entitled "Item 3D. Key Information—Risk Factors" and the description of our segments and business sectors in the section entitled "Item 4B. Information on the Company—Business Overview", each in our annual report for the fiscal year ended December 31, 2018 filed on Form 20-F, for a more complete discussion of the risks and factors that could affect us.Forward-looking statements include, but are not limited to, statements relating to: uncertainties in emerging markets where we have international operations; statements related to project growth strategy; commitments to increased DPS and accretive investment opportunities; strategic business alternatives to ensure optimal company value and improve shareholder return; intentions to divest assets and reinvest to show value creation; our ability to close announced asset acquisitions; our ability to grow through acquisitions from AAGES, Algonquin, other partners, or third parties, including our ability to acquire assets from Algonquin under our enhanced collaboration agreement with Algonquin; estimated returns and cash available for distribution (“CAFD”) estimates from recently announced acquisitions and finalized asset acquisitions; projected future CAFD yield; failure to meet our estimated returns and cash available for distribution estimates in acquisitions recently announced; cash available for distribution estimates made in reliance on asset performance and assets reaching COD by the expected date; fluctuations in the cost of energy and gas; predictions and estimates regarding global water demand, power generation, renewable energy, water desalination markets and related investments; global infrastructure investments; estimates of cost improvement under financing agreements; financial damage caused by our off-take PG&E and potential default under our project finance agreement due to a breach of our underlying PPA agreement with PG&E; strategies in the event of Mojave distribution delays based on the PG&E default; risks associated with acquisitions and investments; targeted potential equity growth investments; ESG initiative improvement; the quality of our long-term contracts; self-amortizing project debt structure and related debt reduction; expected U.S. growth, the use of non-GAAP measures as a useful predicting tool for investors; the possibility to extend asset life; and various other factors, including those factors discussed under “Item 3.D—Risk Factors” and “Item 5.A—Operating Results” in our Annual Report for the fiscal year ended December 31, 2018 filed on Form 20-F.For the purposes of the announced transactions, CAFD yield is the annual weighted average of CAFD expected to be generated by the investments over their first 10-year period from 2019, or from COD for those assets which are not yet in operation, divided by the expected acquisition price. CAFD Yield is an internal estimation subject to a high degree of uncertainty and our ability to reach this expected CAFD Yield depends on a variety of factors, including closing of the acquisitions on their expected terms, acquired assets performing as expected, acquired assets making cash distributions to the holding level as expected, and assets reaching COD by the expected date. Furthermore, any dividends are subject to available capital, market conditions, and compliance with associated laws and regulations. These factors should be considered in connection with information regarding risks and uncertainties that may affect our future results included in our filings with the U.S. Securities and Exchange Commission at www.sec.gov. We undertake no obligation to update or revise any forward-looking statements, whether as a result of new information, future events or developments or otherwise. Should one or more of these risks or uncertainties materialize, or should underlying assumptions prove incorrect, actual results may vary materially from those described herein as anticipated, believed, estimated, expected or targeted.The CAFD and other guidance included in this presentation are estimates as of February 28, 2019. These estimates are based on assumptions believed to be reasonable as of the date Atlantica Yield published its FY 2018 Financial Results. Atlantica Yield disclaims any current intention to update such guidance, except as required by law.Non-GAAP Financial Information This presentation also includes certain non-GAAP financial measures, including Further Adjusted EBITDA including unconsolidated affiliates, Further Adjusted EBITDA including unconsolidated affiliates as a percentage of revenues (margin) and CAFD. Non-GAAP financial measures are not measurements of our performance or liquidity under IFRS as issued by IASB and should not be considered alternatives to operating profit or profit for the period or any other performance measures derived in accordance with IFRS as issued by the IASB or any other generally accepted accounting principles or as alternatives to cash flow from operating, investing or financing activities. Please refer to the appendix of this presentation for a reconciliation of the non-GAAP financial measures included in this presentation to the most directly comparable financial measures prepared in accordance with IFRS as well as the reasons why management believes the use of non-GAAP financial measures in this presentation provides useful information.

Key Messages Atlantica, a strong value creation proposition focused on sustainable infrastructure Q1 Dividend of $0.39/share, a +22% vs Q1’18 increase and a +5% vs Q4’18 Good progress toward financial optimization:2019 notes to be refinanced with improved terms and flexibilityLevers to maintain CAFD guidance even if Mojave’s distribution was delayed New enhanced collaboration agreement with Algonquin that should allow Atlantica to accelerate its growth in the US Solid Q1 2019 results, in line with expectations: Revenue1, Further Adj. EBITDA including unconsolidated affiliates2 and CAFD growth Period over period revenue growth on a constant currency basis, that is, excluding negative FX translation impact.Further Adjusted EBITDA including unconsolidated affiliates includes our share in EBITDA of unconsolidated affiliates (see reconciliation on page 37). Good progress on accretive growth: new acquisition announced today

Sustainable Infrastructure 1. Strategic Update

Focus on Sustainable Infrastructure Renewable Energy viewed as a high growth market that requires Natural Gas, Power Storage and Transmission Wind and Solar offer lower costs than conventional power in many regions~$10 trillion investment in new zero-emissions power generation assets until 2050~50% of the world power generation by 2050 from wind and solarNeed transmission lines, storage and natural gas power for dispatchabilityComplemented by further sustainable areas where we have expertise (i.e. hydro & desalination)Global water demand estimated to exceed supply by ~40% by 2030 $3.2 trillion investment globally in transmission infrastructures over the next decade to support renewable energy Storage and Natural Gas are key “enablers” in the power sector to support Wind and Solar in the mid-term Renewable Energy and Water Infrastructure Efficient Natural Gas & Storage TransmissionLines Global water desalination market is expected to reach $26.8 billion by 2025 driven by increasing population / demand and depleted resources Water Sources:Bloomberg New Energy Finance – 2018 and World Energy Outlook 2017.The Global Electricity Transmission and Distribution Infrastructure Dataset (2016-2026) - Northeast Group, LLC. International Energy Outlook 2017. Annual Energy Outlook, EIA.“Charting Our Water Future” report. 2030 Water Resources Group.According to Hexa Research.

Atlantica Is a Differentiated Sustainable Investment Opportunity Amidst a World in Transition Experience Exposure Scale Structure % Strong Strategic Partner ~$330 million in accretive equity investments announced in the last 6 monthsExperienced management team with an average >20 years working in relevant sectors and regions Operating in geographies favorable to wind and solar developmentDiversified infrastructure company by sectors, technologies and geographies Weighted average remaining contract life of 18 years1 Favorable tax structure and high payout to shareholdersNo IDRs and only one class of sharesMajority of independent directorsInvested in environmentally sustainable assets Long-term partnership with Algonquin supports a sustainable strategy Direct access to new growth sources: first drop-down agreed (Sugar Creek)AAGES ROFO: development of global clean energy and water infrastructure assetsImproved financing sources for growth 24 contracted assets: 1,496 MW of renewable energy generation, 300 MW of conventional power generation, 1,152 miles of electric transmission lines and 10.5 Mft3 per day of water capacity Regulated revenues in the case of the Spanish solar assets and Chile TL3. Weighted average years remaining as of December 31, 2018.

Regulated revenues in the case of the Spanish solar assets and Chile TL3. Weighted average years remaining as of December 31, 2018.Further Adjusted EBITDA including unconsolidated affiliates includes our share in EBITDA of unconsolidated affiliates. Additionally, for the fiscal year 2017, it includes the dividend from the preferred equity investment in Brazil or its compensation. Further Adjusted EBITDA Margin including unconsolidated affiliates is defined as Further Adjusted EBITDA including unconsolidated affiliates divided by revenue (see reconciliation on pages 31 and 32).FY 2017 CAFD includes $10.4 million of ACBH dividend compensation (see reconciliation on page 31).Based on CAFD estimates for the 2019-2023 period, including the acquisitions of new assets announced in November 2018, some of which have been not been closed yet as of today and may not be completed.Based on CAFD estimates for the 2019-2023 period. Non-resource dependence payments includes our transmission and transportation assets, our efficient natural gas plant, our water assets and ~70% revenues received by our Spanish assets. LOW DEPENDENCE & HIGH RESILIENCE Minimal Commodity Risk 100% Contracted revenues1 >90% Interest rate fixed 18 years Weighted average contracted life remaining1 HIGHLY DIVERSIFIED4 LONG-TERM HIGH QUALITY CONTRACTS A Sustainable Business with Solid Cash Generation STRONG LONG-TERM CASH FLOW VISIBILITY & GROWTH TRACK-RECORD $M Organic CAFD growthTails in most assets once debt is amortizedPossibility to extend contracted life 3 2 Non-resource dependence5 Generation Driven >60% of CAFD comes from non-resource dependence payments5 +4% +9% +1%

Strong Value Proposition Growth Embedded in Our Existing Portfolio 4 Core Strengths High-Quality Portfolio 1 Efficient Corporate Structure 2 Prudent Financing Policy 3 Visible Accretive Growth Pipeline Execution of Growth Strategy Attractive Current Dividend Yield1 ~7.5% + 8-10% CAGR Target DPS Q4’17 – FY 20222 An Attractive Total Return Opportunity Current dividend yield calculated as the last dividend payment declared ($0.39 x 4 = $1.56) divided by AY stock price as of May 8, 2019 ($20.30 per share). Compound annual growth rate of the annualized Q4 2017 quarterly dividend per share of $1.24 per share ($0.31 of Q4 2017 dividend multiplied by 4x). CAGR Target DPS represents the growth rate of DPS if the target DPS is achieved. There is no guarantee that such target will be achieved. See “Disclaimer – Forward Looking Statements”. M&A in Attractive Markets 5

Strong Commitment to ESG Relative Performance Rank Percentile Renewable Power Production 1 out of 51 1st Utilities 2 out of 404 1st Global Universe 221 out of 9,802 3rd Low risk of experiencing material financial impacts from ESG factors due to medium exposure and strong management of material ESG issues Rated “Low ESG Risk” Our renewable energy helped to avoid 5 million tons of CO2 Focus on Clean Energy of our 2018 revenues came from solar and wind assets Life on Land We work to protect flora and fauna in the vicinity of our plants and to contain any negative impact from our operations on biodiversity Health & Safety Frequency-with-leave index below US Utilities’ averageZero major injuries in 2017, 2018 and 2019 YTD and 100% KPIs1 within targets Equal oppor-tunities We promote equal opportunities for our employees and stakeholders 41% of our employees are women (1) KPI’s considered: General Frequency Index, Frequency with Leave Index and Total Recordable Deviation Index. For further information please see our Sustainability Report for the FY 2017. 76% of our 2018 revenues came from low-carbon footprint businesses 87%

Significant Progress Achieved in Q1 2019 Highlights Key Drivers Unlocking Value Creation Within Existing Portfolio Committed to achieving CAFD guidance irrespective of PG&E exposure2019 Notes to be refinanced with improved termsIntend to explore options to divest some assets and reinvest accretively to show value creation in 2019Positive outlook with regards to the upcoming renewable rate determination in Spain Strategic Review Committee Currently analyzing several strategic alternatives to optimize Atlantica’s value and to improve returns to shareholders Accretive Growth New investments integrated and performing as expectedAnnouncement of a new investmentPotential new transmission lines in USD in Uruguay with AAGESNew enhanced collaboration agreement signed with Algonquin with the goal of accelerating growth in the US 10

2019 Notes Refinanced with Improved Terms New Note Issuance Facility Agreement Issuer Atlantica Yield Plc Issuance Senior Unsecured Notes fully subscribed by a private investor Amount Euro equivalent of $300 million Interest Expected cost hedged at 4.5%1 Interest Capitalization Option to capitalize up to 2 years of interest payment over the term of the facility at no additional cost Maturity 6 years Repayment Bullet Early Redemption Yes Use of Proceeds Repayment of the Senior Notes due 2019 and general corporate purposes, asset acquisitions Natural hedge for CAFD generated in Euros Longer tenor than notes due in 2019 Expected ~$[4] million2 cost improvement per annum from 2020 Interest accrues at a rate per annum equal to the sum of 3-month EURIBOR plus 4.65%. Atlantica intends to fully hedge the principal amount of the notes with an interest rate swap for no less than 3 years, expected to result in an all-in interest cost of approximately 4.5%. Calculated as the difference between the annual coupon of the previous 2019 Notes ($17.9 M) and expected the interest cost of the new Note Issuance Facility hedging of 4.5% for three years and assuming current €/$ FX rate. Option to capitalize up to 2 years of interest payments (~$14 M/year), which would partially offset CAFD impact if Mojave’s distribution is delayed

Levers to Achieve CAFD Guidance in 2019 Even if Mojave’s Distribution Delayed PG&E Exposure 2019 CAFD guidance includes $30-35M from Mojave in Q4PG&E invoices paid according to contract and plant operating normally“Business as usual” Levers to Ensure CAFD Guidance Release certain project restricted accounts in 2019 and 2020 that would compensate potential delays in Mojave 2 Option to capitalize ~$14 million/year of interest payment in the new Note Issuance for up to 2 years 1 Able to compensate for 2019 and 2020 Mojave distributions if delayed due to PG&E’s situation

New Asset Acquisition: MonterreyA 142 MW gas-fired engine facility with electric battery storage A new 142 MW (130 MW installed capacity plus 12 MW battery) gas-fired cycle facility in operation since 2018 in Mexico PROJECT OVERVIEW TRANSACTION HIGHLIGHTS Atlantica Investment $42 Million ROFO to increase stake up to 100% ROFO ~9.2x EV/EBITDA2 30% interest Stake1 ATTRACTIVE VALUATION MULTIPLES Highly Accretive Transaction Final purchase agreement signed. Closing of the acquisition is subject to certain conditions precedent.EV/EBITDA multiple defined as the enterprise value of the asset divided by the expected 2020E EBITDA from the asset. 20-year USD-denominated PPA with price escalation factor20-year natural gas transportation contract with a U.S. listed energy company to provide gas from TexasNo commodity risk First investment in electric battery storageIncremental revenues from the sale of excess energy into the grid leveraging a low US natural gas cost contract in place

Enhanced Strategic Partnership with Algonquin Aimed at accelerating Atlantica’s growth in the US ALGONQUIN ABLE TO INCREASE ITS STAKE IN ATLANTICA UP TO 48.5% Atlantica has a right to acquire stakes in two Algonquin assets in the US for a total equity value up to $100 million Modification of shareholders agreement to allow Algonquin to increase its stake up to 48.5% with no change in corporate governanceVoting rights and director appointment rights limited to 41.5%. The additional 7% to vote following non-Algonquin shareholdersPart of the new investment ($30M) will be in new shares to be issued at a price of $21.67 per share, a 6% premium vs last closing price 3 STAKES IN TWO ALGONQUIN ASSETS 1 AGREEMENT TO ANALYZE DROP-DOWNS OF ALGONQUIN’S CONTRACTED ASSETS A joint working group to analyze Algonquin’s contracted asset portfolio in the US and Canada during the next six monthsAssets where a drop-down could add value for both parties leveraging the advantages of each company 2

Assets COD 2019E 2020E 2021E 2022E Asset Expansions n.a. 24 20 20 20 Repowering n.a. - - - - ROFO 2018-2020 2019-2020 24 ? ? - < ATN3 2020 10 - 30 - Uruguay Transmission 2022 5 - - 15 New Projects n.a. 10-30 30 170 200 2019 enhanced partnership n.a 100 50-100 ? ? Sugar Creek n.a. 10 20 10 - PTS 2019 7 100 43 - Monterrey 2018 42 - - >100 Ten West Link 2021 4 2 15 - Others n.a. - 0-30 0-20 0-20 Proactive Bilateral Opp. n.a. 0-50 0-50 0-50 0-50 Competitive Processes n.a. 236 – 306 222 - 352 288 - 358 335 - 405 Targeted Potential Equity Investment Organic 1 In Millions Dollars AQN Partnership / ROFO AAGES ABG 2 Algonquin Partnerships 3 Note: Targeted equity investments shown above are estimates. These targeted equity investments are subject to change depending on the different circumstances such as, but not limited to, project opportunities, timing, status of negotiations, access to capital markets, etc. The targeted equity investments may vary from category to category depending on such circumstances. Atlantica does not undertake any obligation to update any forward-looking statements to reflect events or circumstances after the date hereof or to reflect the occurrence of anticipated or unanticipated events or circumstances. Atlantica cannot guarantee the timing or size of the investments or if it will make any investments at all. Colored figures in the table relate to equity investments of the acquisitions announced Strong Pipeline of OpportunitiesTargeted Potential Equity Growth Investments of $200-$300 M/year Third Party 4 15

Sustainable Infrastructure 2. Financial Results Sustainable Infrastructure

HIGHLIGHTSStarting 2019 in Line with Expectations Further Adjusted EBITDA including unconsolidated affiliates includes our share in EBITDA of unconsolidated affiliates (see reconciliation on page 37).Further Adjusted EBITDA Margin including unconsolidated affiliates is defined as Further Adjusted EBITDA including unconsolidated affiliates divided by revenue (see reconciliation on page 39). First Quarter US $ in millions 2019 2018 ∆ Reported ∆ Excl. FX impact Revenue 221.5 225.3 (2)% +4% Further Adjusted EBITDA incl. unconsolidated affiliates1 181.1 179.8 +1% +7% Margin2 82% 80% CAFD 45 43 +5%

WATER Q1 2019 Q1 2018 ∆ 5.8 5.8 (0)% 5.5 5.2 +6% 95% 89% RENEWABLES Q1 2019 Q1 2018 ∆ 156.8 167.2 (6)% 123.5 131.4 (6)% 79% 79% EFFICIENT NATURAL GAS Q1 2019 Q1 2018 ∆ 34.0 28.4 +20% 30.5 23.3 +31% 90% 82% TRANSMISSION Q1 2019 Q1 2018 ∆ 24.9 23.8 +4% 21.7 19.8 +9% 87% 83% HIGHLIGHTSSolid Performance by Sectors and Regions By Sector US $ in millions Revenue Further Adjusted EBITDA incl. unconsolidated affiliates1 Margin2 EMEA NORTH AMERICA Q1 2019 Q1 2018 ∆ 60.4 61.8 (2)% 50.9 60.2 (16)% 84% 98% SOUTH AMERICA Q1 2019 Q1 2018 ∆ 127.5 133.9 (5)% 102.0 95.4 +7% 80% 71% By Region US $ in millions Revenue Further Adjusted EBITDA incl. unconsolidated affiliates1 Margin2 Further Adjusted EBITDA including unconsolidated affiliates includes our share in EBITDA of unconsolidated affiliates (see reconciliation on page 37).Further Adjusted EBITDA Margin including unconsolidated affiliates is defined as Further Adjusted EBITDA including unconsolidated affiliates divided by revenue (see reconciliation on page 38). Q1 2019 Q1 2018 ∆ 33.5 29.5 +13% 28.2 24.2 +17% 84% 82%

Includes curtailment in wind assets for which we received compensation.Represents total installed capacity in assets owned at the end of the period, regardless of our percentage of ownership in each of the assets.Electric availability refers to operational MW over contracted MW with PEMEX. Major maintenance overhaul held in Q1 2019, as scheduled, which reduced production and the electric availability as per the contract.Availability refers to actual availability divided by contracted availability. GWh produced Q1 2018 581 507 Availability Q1 2019 Q1 2018 99.9% 100.0% Availability Q1 2019 99.8% Q1 2018 99.1% Mft3 in operation 10.5 10.5 Miles in operation 1,152 1,099 MW in operation 1,496 1,446 2 4 4 2 1 KEY OPERATIONAL METRICSRobust and Steady Operational Performance WATER RENEWABLES TRANSMISSION GWh produced3 Electric availability Q1 2019 383 Q1 2018 547 87.1% 97.9% MW in operation 300 300 3 EFFICIENT NATURAL GAS Q1 2019

CASH FLOWOperating Cash Flow Further Adjusted EBITDA including unconsolidated affiliates includes our share in EBITDA of unconsolidated affiliates (see reconciliation on page 37).Includes proceeds for $72.6 million in 2018.Consolidated cash as of March 31, 2019 increased by $23.1 million vs December 31, 2018 including FX translation differences of $(6.9) million. US $ in millions Q1 2019 Q1 2018 Further Adjusted EBITDA incl. unconsolidated affiliates1 181.1 179.8 Share in Further Adjusted EBITDA of unconsolidated affiliates (2.0) (1.8) Net interest and income tax paid (13.9) (26.8) Variations in working capital (54.5) (11.7) Non-monetary adjustments and other (13.8) (9.0) OPERATING CASH FLOW 96.9 130.5 OPERATING CASH FLOW excluding Abengoa payments to Solana 96.9 113.8 INVESTING CASH FLOW2 (22.2) 47.5 FINANCING CASH FLOW (44.7) (101.2) Net change in consolidated cash3 30.0 76.9

NET DEBT POSITION1 Net debt corresponds to gross debt including accrued interest less cash and cash equivalents.Corporate Net Debt defined as indebtedness where Atlantica Yield Plc is the primary obligor minus cash and cash equivalents held at Atlantica Yield Plc. Project Net Debt is defined as indebtedness where one of our subsidiaries is the primary obligor minus cash and cash equivalents held by one of our subsidiaries.Net corporate leverage calculated as corporate net debt divided by midpoint 2019 CAFD guidance before corporate debt service. US $ in millions As of Mar. 31,2019 As of Dec. 31,2018 Corporate Net Debt2 589.7 577.4 Project Net Debt3 4,529.6 4,566.3 Corporate net debt / CAFD pre corporate debt service4 2.5x NET DEBTConservative Corporate Leverage

DIVIDEND Delivering on Our Commitment to Grow Dividends Dividends Declared1 Quarterly dividends declared by the Board of Directors and paid during the following quarter. 2019 dividend chart above does not represent any scale. $0.39 Q1 2019 dividend of $0.39 per share or $1.56 annualizedGrowth of 22% vs Q1 2018 and 5% vs Q4 2018Commitment to DPS Growth in 2019 and Beyond Amounts in USD per share +5% +22%

Sustainable Infrastructure 3. Appendix

ENVIRONMENT, SOCIAL, GOVERNANCEStrong Commitment to ESG UN Global Compact participant Strong ESG Commitment Rated by Sustainalytics as “Low ESG Risk”, Top First in Renewables, Top Second in Utilities and top 3% in the global universe ENVIRONMENT Environmental policy and management system in place, which complies with Environmental Management System standard ISO 14001 and is externally verifiedAtlantica’s assets help to avoid approximately 5 million tons of equivalent CO2 compared with a 100% fossil fuel-based generationGHG Emissions reported since our incorporation (Scope 1 and 2)Purified sea water to meet water needs of 1.5M people per year Graph: Comparison of Atlantica’s GHG emission ratio and fossil-fired generation GHG emissions ratio footnote Emission rate calculated taking into account emissions and energy generation of our power assets, both electric and thermal energy. Atlantica emissions

ENVIRONMENT, SOCIAL, GOVERNANCEStrong Commitment to ESG (cont.) GOVERNANCE No IDRs and only one class of sharesMajority of independent directorsAlgonquin has appointed 2 DirectorsAlgonquin’s voting rights and director appointment rights limited to 41.5%Independent management team since IPO SOCIAL Health and Safety Policy and Management System in accordance with the Occupational Health and Safety 18001 standard requirements and externally verifiedGeneral frequency index below industry average in the US and improving each yearCode of Conduct approved by the Board of directors and signed yearly by all employeesSupplier code of conduct to be adopted by all suppliersCommitment with local communities, particularly in South Africa, Algeria & Peru

Long-term High Quality Contracts Contract term2 Project debt term 20 Represents weighted average years remaining as of December 31, 2018, and includes the acquisitions of new assets closed as of December 31, 2018. (2) Regulation term in the case of Spain and Chile TL3.(3) Mini-perm structure: semiannually sculpted debt service payments using an underlying tenor of 15 years but with contractual legal maturity in 2028. (4) Weighted average maturity of the different debt tranches. 3 3 PPAs with predefined prices for >18 years on average1 Refinancing opportunities could increase CAFD in earlier years Possibility to extend life in many assets (excluding ATN and ATS) Tails in most assets after debt amortization 4 4 Year

Includes short-term financial investments. Exchange rates as of March 31, 2019 (EUR/USD = 1.1218) and December 31, 2018 (EUR/USD = 1.1467).Restricted cash is cash which is restricted generally due to the requirements of the project finance lenders. US $ in millions2 As of Mar. 31,2019 As of Dec. 31,2018 Corporate cash at Atlantica Yield 107.9 106.7 Existing available revolver capacity 175.0 105.0 Total Corporate Liquidity 282.9 211.7 Cash at project companies1 634.8 603.7 - Restricted3 347.0 375.3 - Other 287.8 228.4 LIQUIDITYStrong Liquidity Position1RCF increased to $300 million in Jan. 2019

FINANCINGSelf-Amortizing Project Debt Structure Net consolidated debt is calculated as long-term consolidated debt plus short-term consolidated debt minus cash and cash equivalents at the consolidated project level. Net corporate debt is calculated as long-term corporate debt plus short-term corporate debt minus cash and cash equivalents at Atlantica Yield corporate level. Key principle: non-recourse project financing in ring-fenced subsidiaries100% project debt self-amortizing progressively before the end of the contracted lifeLow interest rate risk, with +90% of interest rates fixed or hedged ~$1.1B planned debt reduction in the next 4 years

CORPORATE DEBT DETAILSCorporate Debt as of March 31, 2019 Exchange rates as of March 31, 2019: (EUR/USD = 1.1218).Amounts include principal amounts outstanding and interests to be paid in the short term. US $ in millions1 Maturity Amounts2 2019 Notes 2019 262.0 Credit Facilities (2021 Revolving CF) 2021 123.1 (Other facilities) 2019 11.2 Note Issuance Facility in Euros (Note 1) 2022 100.9 (Note 2) 2023 100.2 (Note 3) 2024 100.1 Total 697.5 To be refinanced in June 2019 with a New Note Issuance Facility for the Euro equivalent of $300 M, with improved terms and a 2025 maturity ~$4 million of interest cost improvement per annum from 2020Longer tenor than 2019 Notes: 6 yearsOption to capitalize up to 2 years of interest paymentsNatural hedge for CAFD generated in euros 

HISTORICAL FINANCIAL REVIEWKey Financials by Quarter Debt details Key Financials US $ in thousands US $ in millions FY 2016 1Q17 2Q17 3Q17 4Q17 FY 2017 1Q18 2Q18 3Q18 4Q18 FY 2018 1Q19 Revenues 971,797 198,146 285,069 291,964 233,202 1,008,381 225,265 287,848 323,812 206,897 1,043,822 221,452 F.A. EBITDA margin (%) 79.5% 83.3% 79.9% 80.9% 67.5% 78.0% 79.8% 91.5% 82,3% 68.8% 81.5% 81.8% Further Adj. EBITDA incl. unconsolidated affiliates 772,112 165,049 227,841 236,252 157,433 786,575 179,800 263,458 271,188 144,270 858,717 181,106 Atlantica Yield’s pro-rata share of EBITDA from unconsolidated affiliates (8,802) (1,100) (2,064) (2,052) (2,049) (7,265) (1,832) (2,071) (2,183) (2,024) (8,110) (2,017) Further Adjusted EBITDA 763,310 163,949 225,777 234,200 155,384 779,310 177,968 261,388 269,005 142,246 850,607 179,089 Dividends from unconsolidated affiliates 4,984 - - 2,454 549 3,003 - - 4,432 - 4,432 - Non-monetary items (59,375) (12,025) (10,758) (13,005) 14,906 (20,882) (8,839) (60,629) (14,755) (15,056) (99,279) (14,632) Interest and income tax paid (334,057) (26,610) (143,081) (28,976) (150,866) (349,533) (26,760) (133,844) (29,212) (143,721) (333,537) (13,925) Principal amortization of indebtedness net of new indebtedness at project level (182,636) (21,522) (54,528) (20,330) (113,362) (209,742) * (17,647) (71,028) (13,025) (127,947) (229,647) (15,176) Deposits into/withdrawals from debt service accounts (46,705) 7,557 (8,157) (26,581) (1,205) (28,386) (21,720) 9,122 (24,388) 6,149 (30,837) 24,935 Change in non-restricted cash at project companies 41,413 (27,293) 66,886 (143,982) 83,397 (20,992) (68,031) 94,448 (92,027) 95,596 29,986 (59,447) Dividends paid to non-controlling interests (8,952) - (1,801) (2,837) - (4,638) - (6,787) (2,958) - (9,745) - Changes in other assets and liabilities (21,694) (23,184) (39,756) 35,747 49,621 22,428 8,060 (45,963) (54,344) 81,815 (10,433) (55,725) Asset refinancing 14,893 - - - - - - - - - - - Cash Available For Distribution (CAFD) 171,181 60,872 34,582 36,690 38,424 170,568 43,031 46,706 42,728 39,082 171,547 45,119 Dividends declared1 70,452 25,054 26,056 29,063 31,067 111,241 32,070 34,074 36,078 37,080 139,302 39,085 # of shares at the end of the period 100,217,260 100,217,260 100,217,260 100,217,260 100,217,260 100,217,260 100,217,260 100,217,260 100,217,260 100,217,260 100,217,260 100,217,260 DPS (in $ per share) 0.703 0.25 0.26 0.29 0.31 1.11 0.32 0.34 0.36 0.37 1.39 0.39 Project debt 5,330.5 5,410.3 5,474.1 5,579.5 5,475.2 5,475.2 5,533.8 5,218.8 5,214.7 5,091.1 5,091.1 5,076.4 Project cash (472.6) (487.4) (435.4) (597.0) (520.9) (520.9) (604.5) (504.9) (609.6) (524.8) (524.8) (546.7) Net project debt 4,857.9 4,922.9 5,038.7 4,982.5 4,954.3 4,954.3 4,929.3 4,713.9 4,605.1 4,566.3 4,566.3 4,529.6 Corporate debt 668.2 667.9 684.6 700.9 643.1 643.1 657.3 639.0 641.8 684.1 684.1 697.5 Corporate cash (122.2) (102.0) (178.9) (197.1) (148.5) (148.5) (151.4) (152.3) (135.1) (106.7) (106.7) (107.9) Net corporate debt 546.0 565.9 505.7 503.8 494.6 494.6 505.9 486.8 506.7 577.4 577.4 589.7 Total net debt 5,403.8 5,488.8 5,544.4 5,486.3 5,448.9 5,448.9 5,435.2 5,200.6 5,111.8 5,143.6 5,143.6 5.119.3 Net Corporate Debt/CAFD pre corporate interests2 2.7x 2.6x 2.3x 2.3x 2.3x 2.3x 2.3x 2.2x 2.3x 2.7x 2.7x 2.5x (5) (3)(4) (4) (5) Dividends are paid to shareholders in the quarter after they are declaredRatios presented are the ratios shown on each earnings presentationsIncludes the impact of a one-time partial refinancing of ATN2. (4) Includes compensation from our preferred equity investment in Brazil ($21.2M in Q3 2016, $6.8M in Q4 2016 and $10.4M in Q1 2017).(5) Excludes Solana debt repayments with proceeds received from Abengoa $52.5M in March 2018 and $42.5M in December 2017.

HISTORICAL FINANCIAL REVIEWSegment Financials by Quarter FY 2016 1Q17 2Q17 3Q17 4Q17 FY 2017 1Q18 2Q18 3Q18 4Q18 FY 2018 1Q19 by Geography NORTH AMERICA 337,061 60,952 109,505 99,580 62,668 332,705 61,781 110,534 122,309 62,553 357,177 60,441 SOUTH AMERICA 118,763 28,527 30,161 31,317 30,792 120,797 29,536 30,345 31,928 31,405 123,214 33,493 EMEA 515,973 108,667 145,403 161,067 139,742 554,879 133,948 146,969 169,576 112,938 563,431 127,518 by Business Sector RENEWABLES 724,326 137,664 225,939 230,872 172,751 767,226 167,225 224,988 259,922 141,422 793,557 156,817 EFFICIENT NAT. GAS 128,046 29,800 29,614 30,240 30,130 119,784 28,387 33,050 33,918 35,444 130,799 34,009 TRANSMISSION 95,137 24,165 23,452 23,447 24,032 95,096 23,840 24,063 24,018 24,076 95,998 24,867 WATER 24,288 6,517 6,064 7,405 6,289 26,275 5,813 5,747 5,955 5,954 23,468 5,759 Total Revenue 971,797 198,146 285,069 291,964 233,202 1,008,381 225,265 287,848 323,813 206,896 1,043,822 221,452 FY 2016 1Q17 2Q17 3Q17 4Q17 FY 2017 1Q18 2Q18 3Q18 4Q18 FY 2018 1Q19 by Geography NORTH AMERICA 284,690 54,753 97,033 91,503 39,039 282,328 60,247 94,411 117,498 36,591 308,748 50,870 84.5% 89.8% 88.6% 91.9% 62.3% 84.9% 97.5% 85.4% 96.1% 58.5% 86.4% 84.2% SOUTH AMERICA1 124,599 33,757 24,858 25,560 24,591 108,766 24,180 25,067 26,987 23,999 100,233 28,212 104.9% 118.3% 82.4% 81.6% 79.9% 90.0% 81.9% 82.6% 84.5% 76.4% 81.3% 84.2% EMEA 362,823 76,539 105,951 119,190 93,801 395,481 95,373 143,979 126,703 83,681 449,736 102,024 70.3% 70.0% 72.9% 74.0% 67.1% 71.3% 71.2% 98.0% 74.7% 74.1% 79.8% 80.0% by Business Sector RENEWABLES 538,427 102,625 176,638 183,344 106,586 569,193 131,434 213,952 220,529 98,514 664,429 123,484 74.3% 74.5% 78.2% 79.4% 61.7% 74.2% 78.6% 95.1% 84.8% 69.7% 83.7% 78.7% EFFICIENT NAT. GAS 106,492 26,716 26,126 27,128 26,170 106,140 23,330 23,652 24,742 22,134 93,858 30,476 83.2% 89.7% 88.2% 89.7% 86.9% 88.6% 82.2% 71,.6% 72.9% 62.4% 71.8% 89.6% TRANSMISSION1 104,795 30,459 19,373 18,817 19,046 87,695 19,837 20,463 20,148 18,014 78,463 21,650 110.2% 126.0% 82.6% 80.3% 79.2% 92.2% 83.2% 85.0% 83.9% 74.8% 81.7% 87.1% WATER 22,398 5,249 5.705 6,964 5,629 23,547 5,199 5,392 5,769 5,608 21,967 5,496 92.2% 80.5% 94.0% 94.0% 89.5% 89.6% 89.4% 93.8% 96.9% 94.2% 93.6% 95.4% Total Further Adj. EBITDA incl. unconsolidated affiliates1 772,112 165,049 227,842 236,253 157,431 786,575 179,800 263,458 271,188 144,270 858,717 181,106 79.5% 83.3% 79.9% 80.9% 67.5% 78.0% 79.8% 91.5% 84.2% 69.7% 82.3% 81.8% US $ in thousands Revenue Further Adj. EBITDA incl. unconsolidated affiliates Further Adjusted EBITDA includes our share in EBITDA of unconsolidated affiliates. Additionally, it includes the dividend from our preferred equity investment in Brazil or its compensation $21.2M in Q3 2016, $6.8M in Q4 2016 and $10.4M in Q1 2017.

1Q17 2Q17 3Q17 4Q17 FY 2017 1Q18 2Q18 3Q18 4Q18 FY 2018 1Q19 RENEWABLES2 (GWh) 460 1,100 1,017 590 3,167 507 939 1,109 504 3,058 581 (GWh) 591 580 615 585 2,372 547 554 613 603 2,318 383 (electric availability %) 99.8% 99.8% 101.6% 100.9% 100.5% 97.9% 99.3% 101.3% 100.9% 99.8% 87.1% TRANSMISSION (availability %) 94.4% 98.8% 99.2% 99.2% 97.9% 100.0% 99.9% 100.0% 99.8% 99.9% 99.5% WATER (availability %) 102.3% 101.9% 102.6% 100.4% 101.8% 99.1% 102.6% 103.7% 102.5% 102.0% 99.8% 1Q17 2Q17 3Q17 4Q17 FY 2017 1Q18 2Q18 3Q18 4Q18 FY 2018 1Q19 RENEWABLES (MW) 1,442 1,442 1,442 1,442 1,442 1,446 1,446 1,446 1,496 1,496 1,496 EFF. NATURAL GAS (electric MW) 300 300 300 300 300 300 300 300 300 300 300 TRANSMISSION (Miles) 1,099 1,099 1,099 1,099 1,099 1,099 1,099 1,099 1,152 1,152 1,152 WATER (Mft3/day) 10.5 10.5 10.5 10.5 10.5 10.5 10.5 10.5 10.5 10.5 10.5 Capacity in operation1(at the end of the period) Production / Availability HISTORICAL FINANCIAL REVIEWKey Performance Indicators 4 5 6 Represents total installed capacity in assets owned at the end of the period, regardless of our percentage of ownership in each of the assets.Includes curtailment in wind assets for which we receive compensation.Efficient Natural Gas production and availability were impacted by a scheduled major maintenance in Q1 2019, which occurs periodically.Electric availability refers to operational MW over contracted MW with PEMEX. Availability refers to actual availability adjusted as per contract.Availability refers to actual availability divided by contracted availability. EFFICIENT NATURAL GAS3

1Q17 2Q17 3Q17 4Q17 FY 2017 1Q18 2Q18 3Q18 4Q18 FY 2018 1Q19 US 18.1% 41.9% 29.5% 18.2% 27.0% 18.8% 39.9% 38.9% 15.0% 28.2% 15.2% Spain 10.0% 31.0% 33.4% 12.6% 21.8% 8.8% 20.8% 30.6% 7.3% 16.9% 12.1% Kaxu 15.9% 20.9% 21.4% 41.1% 24.9% 36.9% 27.6% 29.9% 50.0% 36.0% 48.7% WIND2 Uruguay 27.8% 36.1% 46.1% 37.7% 37.0% 31.2% 34.5% 42.3% 40.7% 37.2% 33.0% SOLAR Historical Capacity Factors1 HISTORICAL FINANCIAL REVIEWCapacity Factors Capacity factor ratio represents actual electrical energy output over a given period of time to the maximum possible electrical energy output assuming continuous operation at full nameplate capacity over that period. Historical Capacity Factors are calculated from the date of entry into operation or the acquisition of each asset. Some capacity factors are not indicative of a full period of operations.Includes curtailment production in wind assets for which we receive compensation.

SIZEABLE AND DIVERSIFIED ASSET PORTFOLIOPortfolio Breakdown Based on Estimated CAFD1 CURRENCY2 SECTOR GEOGRAPHY Based on CAFD estimates for the 2019-2023 period, including the acquisitions of new assets announced (ATN Expansion 1, ATN Expansion 2, Chile TL3, PTS, Tenes and Melowind). Final purchase agreements for some of which have been not been signed yet as of today. Some of the acquisitions have not closed and may not be completed within the expected period of time, if ever. See “Disclaimer – Forward Looking Statements”.Including the effect of currency swap agreements. of long-term interest rates in projects are fixed or hedged2 ~ 90% 90 Denominatedin USD % > 68% Renewable14% Efficient Natural Gas14% Transmission & Transpor. 4% Water 36% North America41% Europe12% South America11% RoW

AT A GLANCESizeable and Diversified Asset Portfolio As of December 31, 2018 ASSET TYPE STAKE LOCATION GROSSCAPACITY OFFTAKER RATING 1 YEARS INCONTRACT LEFT CURRENCY RENEWABLE ENERGY Solana 100%2 USA (Arizona) 280 MW APS A-/A2/A- 25 USD Mojave 100% USA (California) 280 MW PG&E D/WR/WD 21 USD Solaben 2/3 70% Spain 2x50 MW Kingdom of Spain A-/Baa1/A- 19/18 EUR 4 Solacor 1/2 87% Spain 2x50 MW Kingdom of Spain A-/Baa1/A- 18/18 EUR 4 PS 10/20 100% Spain 31 MW Kingdom of Spain A-/Baa1/A- 13/15 EUR 4 Helioenergy 1/2 100% Spain 2x50 MW Kingdom of Spain A-/Baa1/A- 18/18 EUR 4 Helios 1/2 100% Spain 2x50 MW Kingdom of Spain A-/Baa1/A- 19/19 EUR 4 Solnova 1/3/4 100% Spain 3x50 MW Kingdom of Spain A-/Baa1/A- 16/16/17 EUR 4 Solaben 1/6 100% Spain 2x50 MW Kingdom of Spain A-/Baa1/A- 20/20 EUR 4 Seville PV 80% Spain 1 MW Kingdom of Spain A-/Baa1/A- 17 EUR Kaxu 51% South Africa 100 MW Eskom BB/Baa3/BB+3 16 ZAR Palmatir 100% Uruguay 50 MW UTE BBB/Baa2/BBB-3 15 USD Cadonal 100% Uruguay 50 MW UTE BBB/Baa2/BBB-3 16 USD Melowind 100% Uruguay 50 MW UTE BBB/Baa2/BBB-3 16 USD Mini-Hydro 100% Peru 4 MW Peru BBB+/A3/BBB+ 14 USD EFFICIENT NATURAL GAS ACT 100% Mexico 300 MW Pemex BBB+/Baa3/BBB- 14 USD 5 ELECTRICAL TRANSMISSION ATN 100% Peru 362 miles Peru BBB+/A3/BBB+ 22 USD 5 ATS 100% Peru 569 miles Peru BBB+/A3/BBB+ 25 USD 5 ATN 2 100% Peru 81 miles Minera Las Bambas Not rated 14 USD 5 Quadra 1&2 100% Chile 81 miles Sierra Gorda Not rated 16/16 USD 5 Palmucho 100% Chile 6 miles Enel Generacion Chile BBB+/Baa1 /BBB+ 19 USD 5 Chile TL3 100% Chile 50 miles CNE A+/A1/A+ Regulated USD 5 WATER Skikda 34% Algeria 3.5 Mft3/day Sonatrach & ADE Not rated 15 USD 5 Honaine 26% Algeria 7 Mft3/day Sonatrach & ADE Not rated 19 USD 5 Reflects the counterparties’ issuer credit ratings issued by S&P, Moody’s and Fitch, respectively, as of April 30, 2018.Liberty Interactive Corporation holds $300M in Class A membership interests in exchange for a share of the dividends and the taxable loss generated by Solana.For Kaxu it refers to the credit rating of the Republic of South Africa, and for Palmatir, Cadonal and Melowind it refers to the credit rating of Uruguay, as UTE is unrated.Gross cash in euros dollarized through currency hedges.USD denominated but payable in local currency.

NON-GAAP FINANCIAL INFORMATIONReconciliation of Non-GAAP Measures Our management believes Further Adjusted EBITDA including unconsolidated affiliates and CAFD is useful to investors and other users of our financial statements in evaluating our operating performance because it provides them with an additional tool to compare business performance across companies and across periods. Further Adjusted EBITDA is widely used by investors to measure a company’s operating performance without regard to items such as interest expense, taxes, depreciation and amortization, which can vary substantially from company to company depending upon accounting methods and book value of assets, capital structure and the method by which assets were acquired. Our management believes CAFD is a relevant supplemental measure of the Company’s ability to earn and distribute cash returns to investors and is useful to investors in evaluating our operating performance because securities analysts and other interested parties use such calculations as a measure of our ability to make quarterly distributions. In addition, CAFD is used by our management team for determining future acquisitions and managing our growth. Further Adjusted EBITDA and CAFD are widely used by other companies in the same industry. Our management uses Further Adjusted EBITDA and CAFD as measures of operating performance to assist in comparing performance from period to period on a consistent basis. They also readily view operating trends, as a measure for planning and forecasting overall expectations, for evaluating actual results against such expectations, and for communicating with our board of directors, shareholders, creditors, analysts and investors concerning our financial performance.We present non-GAAP financial measures because we believe that they and other similar measures are widely used by certain investors, securities analysts and other interested parties as supplemental measures of performance and liquidity. The non-GAAP financial measures may not be comparable to other similarly titled measures employed by other companies and they may have limitations as analytical tools. These measures may not be fit for isolated consideration or as a substitute for analysis of our operating results as reported under IFRS as issued by the IASB. Non-GAAP financial measures and ratios are not measurements of our performance or liquidity under IFRS as issued by the IASB. Thus, they should not be considered as alternatives to operating profit, profit for the period, any other performance measures derived in accordance with IFRS as issued by the IASB, any other generally accepted accounting principles or as alternatives to cash flow from operating, investing or financing activities. Some of the limitations of these non-GAAP measures are:they do not reflect our cash expenditures, future requirements for capital expenditures or contractual commitments; they do not reflect changes in, or cash requirements for, our working capital needs;they may not reflect the significant interest expense, or the cash requirements necessary, to service interest or principal payments, on our debts;although depreciation and amortization are non-cash charges, the assets being depreciated and amortized will often need to be replaced in the future and Further Adjusted EBITDA and CAFD do not reflect any cash requirements that would be required for such replacements;some of the exceptional items that we eliminate in calculating Further Adjusted EBITDA reflect cash payments that were made, or will be made in the future; andthe fact that other companies in our industry may calculate Further Adjusted EBITDA and CAFD differently than we do, which limits their usefulness as comparative measures.

RECONCILIATIONReconciliation of Cash Available For Distribution and Further Adjusted EBITDA to Profit/(loss) for the period attributable to the Company (in thousands of U.S. dollars) For the three-month period ended March 31, 2019 2018 Profit/(loss) for the period attributable to the Company $ (8,957) $ (4,764) Profit attributable to non-controlling interest 5,267 3,254 Income tax 9,577 4,650 Share of loss/(profit) of associates carried under the equity method (1,823) (1,407) Financial expense, net 99,289 101,611 Operating profit $ 103,353 $ 103,344 Depreciation, amortization, and impairment charges 75,736 74,624 Further Adjusted EBITDA $ 179,089 $ 177,968 Atlantica Yield’s pro-rata share of EBITDA from unconsolidated affiliates 2,017 1,832 Further Adjusted EBITDA including unconsolidated affiliates1 $ 181,106 $ 179,800 Atlantica Yield’s pro-rata share of EBITDA from unconsolidated affiliates (2,017) (1,832) Non-monetary items (14,632) (8,839) Interest and income tax paid (13,925) (26,760) Principal amortization of indebtedness (15,176) (17,647) Deposits into/ withdrawals from restricted accounts 24,935 (21,720) Change in non-restricted cash at project level (59,447) (68,031) Changes in other assets and liabilities (55,725) 8,060 Cash Available For Distribution $ 45,119 $ 43,031 Further Adjusted EBITDA including unconsolidated affiliates includes our share in EBITDA of unconsolidated affiliates.

RECONCILIATIONReconciliation of Further Adjusted EBITDA including unconsolidated affiliates to Net Cash Provided by Operating Activities (in thousands of U.S. dollars) For the three-month period ended March 31, 2019 2018 Net cash provided by operating activities $ 96,889 $ 130,535 Net interest and income tax paid 13,925 26,760 Variations in working capital 54,508 11,654 Other non-cash adjustments and other 13,767 9,019 Further Adjusted EBITDA $ 179,089 $ 177,968 Atlantica Yield’s pro-rata share of EBITDA from unconsolidated affiliates 2,017 1,832 Further Adjusted EBITDA including unconsolidated affiliates1 $ 181,106 $ 179,800 Further Adjusted EBITDA including unconsolidated affiliates includes our share in EBITDA of unconsolidated affiliates.

RECONCILIATIONReconciliation of Further Adjusted EBITDA Margin including unconsolidated affiliates to Operating Profit Margin (in thousands of U.S. dollars) For the three-month period ended March 31, 2019 2018 Revenue $ 221,452 $ 225,265 Profit/(loss) for the period attributable to the Company $ (8,957) $ (4,764) Profit attributable to non-controlling interest 5,267 3,254 Income tax 9,577 4,650 Share of loss/(profit) of associates carried under the equity method (1,823) (1,407) Financial expense, net 99,289 101,611 Operating profit $ 103,353 $ 103,344 Operating profit margin % 46.7 % 45.9 Depreciation, amortization, and impairment charges 34.2 33.1 Further Adjusted EBITDA margin % 80.9 % 79.0 Atlantica Yield’s pro-rata share of EBITDA from unconsolidated affiliates 0.9 0.8 Further Adjusted EBITDA Margin including unconsolidated affiliates1 % 81.8 % 79.8 Further Adjusted EBITDA including unconsolidated affiliates includes our share in EBITDA of unconsolidated affiliates.

Great West House, GW1, 17th floor,Great West RoadBrentford TW8 9DFLondon (United Kingdom)

SIGNATURES
Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

| ATLANTICA YIELD PLC
Date: May 10, 2019 | By: | /s/ Santiago Seage
|  | Name: | Santiago Seage
|  | Title: | Chief Executive Officer