EX-99.1 2 a2021-q2xprfinal.htm EX-99.1 EARNINGS RELEASE
Spark Energy, Inc. Reports Second Quarter 2021 Financial Results
HOUSTON, August 4, 2021 (ACCESSWIRE) -- Spark Energy, Inc. ("Spark" or the "Company") (NASDAQ: SPKE), an independent retail energy services company, today reported financial results for the quarter ended June 30, 2021.
Key Highlights
•Achieved $14.4 million in Adjusted EBITDA, and $26.4 million in Retail Gross Margin, and $24.8 million in Net Income for the second quarter
•Total RCE count of 347,000 as of June 30, 2021
•Entered into four separate agreements to acquire approximately 56,900 RCEs
•Average monthly attrition of 3.3%
•Total liquidity of $151.8 million as of June 30, 2021
"We are proud to announce that on May 25th, 2021, we entered into four agreements to acquire a total of approximately 56,900 RCEs. These customers are expected to be immediately accretive to Adjusted EBITDA. Subsequent to quarter end, Spark entered into an agreement that will bring an additional ~50,000 RCEs in the third quarter. We have completed high grading our existing customer contracts and are pivoting back to growth through both acquisitions and organic sales. Additionally, we plan to leverage our customer book and operational expertise to vertically integrate our supply chain with multiple sustainable energy generation projects. While continuing to focus on growing the existing business, we believe there are numerous complimentary avenues in the green energy space that can supplement our history of strong earnings," said Keith Maxwell, Spark's President and Chief Executive Officer.
Summary Second Quarter 2021 Financial Results
Net income for the quarter ended June 30, 2021, was $24.8 million compared to net income of $26.8 million for the quarter ended June 30, 2020. The decrease compared to the prior year was primarily the result of lower margin driven by lower customer counts partially offset by a decrease in G&A and depreciation and amortization.
For the quarter ended June 30, 2021, Spark reported Adjusted EBITDA of $14.4 million compared to Adjusted EBITDA of $23.8 million for the quarter ended June 30, 2020. While gross margin was lower year-over-year, the decrease in gross margin was partially offset by decreases in G&A expenses and Customer Acquisition Cost spending.
For the quarter ended June 30, 2021, Spark reported Retail Gross Margin of $26.4 million compared to Retail Gross Margin of $45.0 million for the quarter ended June 30, 2020. This decrease of $18.6 million was primarily attributable to fewer customers in our overall portfolio.

Liquidity and Capital Resources |
($ in thousands) | June 30, 2021
Cash and cash equivalents | $ | 93,035 |
Senior Credit Facility Availability (1) | 43,739 |
Subordinated Debt Facility Availability (2) | 15,000 |
Total Liquidity | $ | 151,774 |

(1) Reflects amount of Letters of Credit that could be issued based on existing covenants as of June 30, 2021.
(2) The availability of the Subordinated Facility is dependent on our Founder's willingness and ability to lend.

Dividend
On July 21, 2021, Spark’s Board of Directors declared quarterly dividends of $0.18125 per share of Class A common stock payable on September 15, 2021 to holders of record on September 1, 2021, and $0.546875 per share of Series A Preferred Stock payable on October 15, 2021 to holders of record on October 1, 2021.
Business Outlook
Mr. Maxwell concluded, "Spark Energy will be holding a special shareholder meeting on Friday, August 6th, to propose to change the name of the public entity to VIA Renewables. We want to take this opportunity to rebrand ourselves and be a meaningful part of the global push towards energy sustainability, efficiency, and longevity. As our first step down this path, we purchased Renewable Energy Credits to offset all of our electric and natural gas load in the second quarter of 2021 and will continue to do that on a go-forward basis. This is just the beginning as we plan on exploring all options including wind, hydro, and solar generation, along with other special projects in the renewable space. The Company's goals going forward are easily summarized; 1. Make the world a more environmentally sustainable place and; 2. Increase our Adjusted EBITDA through growing our existing book and vertically integrating our business model over time. We believe this will provide additional financial stability and opportunities in the market that would benefit all of our stakeholders.”
Conference Call and Webcast
Spark will host a conference call to discuss second quarter 2021 results on Thursday, August 5, 2021, at 10:00 AM Central Time (11:00 AM Eastern).
A live webcast of the conference call can be accessed from the Events & Presentations page of the Spark Energy Investor Relations website at http://ir.sparkenergy.com/events-and-presentations. An archived replay of the webcast will be available for twelve months following the live presentation.
About Spark Energy, Inc.
Spark Energy, Inc. is an independent retail energy services company founded in 1999 that provides residential and commercial customers in competitive markets across the United States with an alternative choice for natural gas and electricity. Headquartered in Houston, Texas, Spark currently operates in 100 utility service territories across 19 states and the District of Columbia. Spark offers its customers a variety of product and service choices, including stable and predictable energy costs and green product alternatives.
We use our website as a means of disclosing material non-public information and for complying with our disclosure obligations under Regulation FD. Investors should note that new materials, including press releases, updated investor presentations, and financial and other filings with the Securities and Exchange Commission are posted on the Spark Energy Investor Relations website at ir.sparkenergy.com. Investors are urged to monitor our website regularly for information and updates about the Company.
Cautionary Note Regarding Forward Looking Statements
This earnings release contains forward-looking statements that are subject to a number of risks and uncertainties, many of which are beyond our control. These forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended (the “Securities Act”) and Section 21E of the Securities Exchange Act of 1934, as amended (the “Exchange Act”) can be identified by the use of forward-looking terminology including “may,” “should,” "could," “likely,” “will,” “believe,” “expect,” “anticipate,” “estimate,” “continue,” “plan,” “intend,” “project,” or other similar words. All statements, other than statements of historical fact included in this earnings

release are forward-looking statements. The forward-looking statements include statements regarding the impacts of COVID-19 and the 2021 severe weather event, cash flow generation and liquidity, business strategy, prospects for growth, outcomes of legal proceedings, ability to pay cash dividends, future operations, financial position, estimated revenues and losses, projected costs, prospects, plans, objectives, beliefs of management, availability and terms of capital, competition, governmental regulation and general economic conditions. Although we believe that the expectations reflected in such forward-looking statements are reasonable, we cannot give any assurance that such expectations will prove correct.
The forward-looking statements in this earnings release are subject to risks and uncertainties. Important factors that could cause actual results to materially differ from those projected in the forward-looking statements include, but are not limited to:
•evolving risks, uncertainties and impacts relating to COVID-19, including the geographic spread, the severity of the disease, the scope and duration of the COVID-19 outbreak, actions that may be taken by governmental authorities to contain the COVID-19 outbreak or to treat its impact, and the potential for continuing negative impacts of COVID-19 on economies and financial markets;
•the ultimate impact of the 2021 severe weather event, including resolution of outstanding pricing and volume settlement data from ERCOT; the results of formal disputes regarding pricing and volume settlement data received to date; and any corrective action by the State of Texas, ERCOT, the Railroad Commission of Texas, or the Public Utility Commission of Texas;
•changes in commodity prices;
•the sufficiency of risk management and hedging policies and practices;
•the impact of extreme and unpredictable weather conditions, including hurricanes and other natural disasters;
•federal, state and local regulations, including the industry's ability to address or adapt to potentially restrictive new regulations that may be enacted by public utility commissions;
•our ability to borrow funds and access credit markets;
•restrictions in our debt agreements and collateral requirements;
•credit risk with respect to suppliers and customers;
•changes in costs to acquire customers as well as actual attrition rates;
•accuracy of billing systems;
•our ability to successfully identify, complete, and efficiently integrate acquisitions into our operations;
•significant changes in, or new changes by, the independent system operators (“ISOs”) in the regions we operate;
•competition; and
•the “Risk Factors” in our Annual Report on Form 10-K for the year ended December 31, 2020, and other public filings and press releases.
You should review the risk factors and other factors noted throughout this earnings release that could cause our actual results to differ materially from those contained in any forward-looking statement. All forward-looking statements speak only as of the date of this earnings release. Unless required by law, we disclaim any obligation to publicly update or revise these statements whether as a result of new information, future events or otherwise. It is not possible for us to predict all risks, nor can we assess the impact of all factors on the business or the extent to which any factor, or combination of factors, may cause actual results to differ materially from those contained in any forward-looking statements.
For further information, please contact:

Investor Relations:
Mike Barajas,
832-200-3727
Media Relations:
Kira Jordan,
832-255-7302

SPARK ENERGY, INC.
CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS
(in thousands, except per share data)
(unaudited)

| Three Months Ended June 30, |  | Six Months Ended June 30,
| 2021 |  | 2020 |  | 2021 |  | 2020
Revenues: |  |  |  |  |  |  |
Retail revenues | $ | 82,309 |  |  | $ | 128,618 |  |  | $ | 195,454 |  |  | $ | 294,978 |
Net asset optimization (expense) revenue | (114) |  |  | (82) |  |  | (254) |  |  | 239 |
Total Revenues | 82,195 |  |  | 128,536 |  |  | 195,200 |  |  | 295,217 |
Operating Expenses: |  |  |  |  |  |  |
Retail cost of revenues | 36,176 |  |  | 65,605 |  |  | 158,344 |  |  | 184,428 |
General and administrative | 10,663 |  |  | 21,331 |  |  | 23,334 |  |  | 47,007 |
Depreciation and amortization | 5,413 |  |  | 8,010 |  |  | 11,449 |  |  | 16,806 |
Total Operating Expenses | 52,252 |  |  | 94,946 |  |  | 193,127 |  |  | 248,241 |
Operating income | 29,943 |  |  | 33,590 |  |  | 2,073 |  |  | 46,976 |
Other (expense)/income: |  |  |  |  |  |  |
Interest expense | (1,552) |  |  | (1,193) |  |  | (2,863) |  |  | (2,746) |
Interest and other income | 79 |  |  | 53 |  |  | 165 |  |  | 213 |
Total other expenses | (1,473) |  |  | (1,140) |  |  | (2,698) |  |  | (2,533) |
Income (loss) before income tax expense | 28,470 |  |  | 32,450 |  |  | (625) |  |  | 44,443 |
Income tax expense | 3,674 |  |  | 5,673 |  |  | 2,139 |  |  | 7,598 |
Net income (loss) | $ | 24,796 |  |  | $ | 26,777 |  |  | $ | (2,764) |  |  | $ | 36,845 |
Less: Net income (loss) attributable to non-controlling interests | 14,313 |  |  | 15,618 |  |  | (5,616) |  |  | 21,207 |
Net income attributable to Spark Energy, Inc. stockholders | $ | 10,483 |  |  | $ | 11,159 |  |  | $ | 2,852 |  |  | $ | 15,638 |
Less: Dividend on Series A Preferred Stock | 1,951 |  |  | 2,039 |  |  | 3,902 |  |  | 3,539 |
Net income (loss) attributable to stockholders of Class A common stock | $ | 8,532 |  |  | $ | 9,120 |  |  | $ | (1,050) |  |  | $ | 12,099 |
Net income (loss) attributable to Spark Energy, Inc. per share of Class A common stock |  |  |  |  |  |  |
Basic | $ | 0.58 |  |  | $ | 0.63 |  |  | $ | (0.07) |  |  | $ | 0.84 |
Diluted | $ | 0.58 |  |  | $ | 0.62 |  |  | $ | (0.07) |  |  | $ | 0.83 |
Weighted average shares of Class A common stock outstanding |  |  |  |  |  |  |
Basic | 14,685 |  |  | 14,558 |  |  | 14,656 |  |  | 14,469 |
Diluted | 14,820 |  |  | 14,763 |  |  | 14,767 |  |  | 14,569 |

Selected Balance Sheet Data |  |  |
(in thousands) | June 30, 2021 |  | December 31, 2020
Cash and cash equivalents | 93,035 |  |  | 71,684 |
Working capital | 146,721 |  |  | 114,213 |
Total assets | 369,154 |  |  | 366,667 |
Total debt | 145,000 |  |  | 100,000 |
Total liabilities | 214,770 |  |  | 190,918 |
Total stockholders' equity | 58,784 |  |  | 64,854 |

Selected Cash Flow Data |  |  |
| Six Months Ended June 30,
(in thousands) | 2021 |  | 2020
Net cash provided by operating activities | $ | 9,168 |  |  | $ | 71,783 |
Net cash used in investing activities | $ | (1,063) |  |  | $ | (579) |
Net cash provided (used) in financing activities | $ | 24,751 |  |  | $ | (49,248) |

Operating Segment Results |  |  |  |  |  |  |
| Three Months Ended June 30, |  | Six Months Ended June 30,
| 2021 |  | 2020 |  | 2021 |  | 2020
(in thousands, except volume and per unit operating data) |
Retail Electricity Segment |  |  |  |  |  |  |
Total Revenues | $ | 71,689 |  |  | $ | 112,255 |  |  | $ | 150,444 |  |  | $ | 234,023 |
Retail Cost of Revenues | 31,203 |  |  | 59,268 |  |  | 138,727 |  |  | 159,651 |
Less: Net gain on non-trading derivatives, net of cash settlements | 18,835 |  |  | 17,414 |  |  | 24,352 |  |  | 7,993 |
Non-recurring event - Winter Storm Uri | — |  |  | — |  |  | (64,900) |  |  | — |
Retail Gross Margin (1) — Electricity | $ | 21,651 |  |  | $ | 35,573 |  |  | $ | 52,265 |  |  | $ | 66,379 |
Volumes — Electricity (MWhs) (3) | 614,000 |  |  | 978,297 |  |  | 1,236,127 |  |  | 2,069,722 |
Retail Gross Margin (2) (4) — Electricity per MWh | $ | 35.26 |  |  | $ | 36.36 |  |  | $ | 42.28 |  |  | $ | 32.07 |
Retail Natural Gas Segment |  |  |  |  |  |  |
Total Revenues | $ | 10,620 |  |  | $ | 16,363 |  |  | $ | 45,010 |  |  | $ | 60,955 |
Retail Cost of Revenues | 4,973 |  |  | 6,337 |  |  | 19,617 |  |  | 24,777 |
Less: Net gain on non-trading derivatives, net of cash settlements | 858 |  |  | 605 |  |  | 1,206 |  |  | 2,102 |
Retail Gross Margin (1) — Gas | $ | 4,789 |  |  | $ | 9,421 |  |  | $ | 24,187 |  |  | $ | 34,076 |
Volumes — Gas (MMBtus) | 1,268,051 |  |  | 1,967,439 |  |  | 5,097,525 |  |  | 7,249,738 |
Retail Gross Margin (2) — Gas per MMBtu | $ | 3.78 |  |  | $ | 4.79 |  |  | $ | 4.75 |  |  | $ | 4.70 |

(1) Reflects the Retail Gross Margin attributable to our Retail Electricity Segment or Retail Natural Gas Segment, as applicable. Retail Gross Margin is a non-GAAP financial measure. See “Reconciliation of GAAP to Non-GAAP Measures” section below for a reconciliation of Adjusted EBITDA and Retail Gross Margin to their most directly comparable financial measures presented in accordance with GAAP.
(2) Reflects the Retail Gross Margin for the Retail Electricity Segment or Retail Natural Gas Segment, as applicable, divided by the total volumes in MWh or MMBtu, respectively.
(3) Excludes volumes (8,402 MWhs) related to Winter Storm Uri impact for the six months ended June 30, 2021

(4) Retail Gross Margin - Electricity per MWh excludes Winter Storm Uri impact
Reconciliation of GAAP to Non-GAAP Measures
Adjusted EBITDA
We define “Adjusted EBITDA” as EBITDA less (i) customer acquisition costs incurred in the current period, plus or minus (ii) net (loss) gain on derivative instruments, and (iii) net current period cash settlements on derivative instruments, plus (iv) non-cash compensation expense, and (v) other non-cash and non-recurring operating items. EBITDA is defined as net income (loss) before the provision for income taxes, interest expense and depreciation and amortization. This conforms to the calculation of Adjusted EBITDA in our Senior Credit Facility.
We deduct all current period customer acquisition costs (representing spending for organic customer acquisitions) in the Adjusted EBITDA calculation because such costs reflect a cash outlay in the period in which they are incurred, even though we capitalize and amortize such costs over two years. We do not deduct the cost of customer acquisitions through acquisitions of businesses or portfolios of customers in calculating Adjusted EBITDA.
We deduct our net gains (losses) on derivative instruments, excluding current period cash settlements, from the Adjusted EBITDA calculation in order to remove the non-cash impact of net gains and losses on these instruments. We also deduct non-cash compensation expense that results from the issuance of restricted stock units under our long-term incentive plan due to the non-cash nature of the expense.
We adjust from time to time other non-cash or unusual and/or infrequent charges due to either their non-cash nature or their infrequency. We have historically included the financial impact of weather variability in the calculation of Adjusted EBITDA. We will continue this historical approach, but during the first quarter of 2021 we incurred a net pre-tax financial loss of $64.9 million due to Winter Storm Uri, as described above. This loss was incurred due to uncharacteristic extended sub-freezing temperatures across Texas combined with the impact of the pricing caps ordered by ERCOT. We believe this event is unusual, infrequent, and non-recurring in nature.
Our lenders under the Company's Senior Credit Facility allowed $60.0 million of the $64.9 million pre-tax storm loss to be added back as a non-recurring item in the calculation of Adjusted EBITDA for the Company's Debt Covenant Calculations. As our Senior Credit Facility is considered a material agreement and Adjusted EBITDA is a key component of our material covenants, we consider our covenant compliance to be material to the understanding of the Company's financial condition and/or liquidity.
We believe that the presentation of Adjusted EBITDA provides information useful to investors in assessing our performance and results of operations and that Adjusted EBITDA is also useful for an understanding of our financial condition and/or liquidity due to its use in covenants in our Senior Credit Facility. Adjusted EBITDA is a supplemental financial measure that management and external users of our consolidated financial statements, such as industry analysts, investors, commercial banks and rating agencies, use to assess the following:
•our operating performance as compared to other publicly traded companies in the retail energy industry, without regard to financing methods, capital structure, historical cost basis and specific items not reflective of ongoing operations;
•the ability of our assets to generate earnings sufficient to support our proposed cash dividends;

•our ability to fund capital expenditures (including customer acquisition costs) and incur and service debt; and
•our compliance with financial debt covenants.
Retail Gross Margin
We define retail gross margin as operating income (loss) plus (i) depreciation and amortization expenses and (ii) general and administrative expenses, less (iii) net asset optimization revenues (expenses), (iv) net gains (losses) on non-trading derivative instruments, (v) net current period cash settlements on non-trading derivative instruments and (vi) gains (losses) from non-recurring events (including non-recurring market volatility. Retail gross margin is included as a supplemental disclosure because it is a primary performance measure used by our management to determine the performance of our retail natural gas and electricity segments. As an indicator of our retail energy business’s operating performance, retail gross margin should not be considered an alternative to, or more meaningful than, operating income (loss), its most directly comparable financial measure calculated and presented in accordance with GAAP.
We believe retail gross margin provides information useful to investors as an indicator of our retail energy business's operating performance.
We have historically included the financial impact of weather variability in the calculation of Retail Gross Margin. We will continue this historical approach, but during the current quarter we have made the decision to add back the financial loss related to winter storm Uri, as described above, in the calculation of Retail Gross Margin because the extremity of the storm combined with the impact of the scarcity pricing mechanisms ordered by ERCOT is considered unusual, infrequent, and non-recurring in nature.
The GAAP measures most directly comparable to Adjusted EBITDA are net income (loss) and net cash provided by operating activities. The GAAP measure most directly comparable to Retail Gross Margin is operating income (loss). Our non-GAAP financial measures of Adjusted EBITDA and Retail Gross Margin should not be considered as alternatives to net income (loss), net cash provided by operating activities, or operating income (loss). Adjusted EBITDA and Retail Gross Margin are not presentations made in accordance with GAAP and have limitations as analytical tools. You should not consider Adjusted EBITDA or Retail Gross Margin in isolation or as a substitute for analysis of our results as reported under GAAP. Because Adjusted EBITDA and Retail Gross Margin exclude some, but not all, items that affect net income (loss), net cash provided by operating activities, and operating income (loss), and are defined differently by different companies in our industry, our definition of Adjusted EBITDA and Retail Gross Margin may not be comparable to similarly titled measures of other companies.
Management compensates for the limitations of Adjusted EBITDA and Retail Gross Margin as analytical tools by reviewing the comparable GAAP measures, understanding the differences between the measures and incorporating these data points into management’s decision-making process.

The following tables present a reconciliation of Adjusted EBITDA to net income (loss) and net cash provided (used in) operating activities for each of the periods indicated.

Reconciliation of Adjusted EBITDA to net income (loss): |  |  |  |  |  |  |
| Three Months Ended June 30, |  | Six Months Ended June 30,
(in thousands) | 2021 |  | 2020 |  | 2021 |  | 2020
Net income (loss) | $ | 24,796 |  |  | $ | 26,777 |  |  | $ | (2,764) |  |  | $ | 36,845 |
Depreciation and amortization | 5,413 |  |  | 8,010 |  |  | 11,449 |  |  | 16,806 |
Interest expense | 1,552 |  |  | 1,193 |  |  | 2,863 |  |  | 2,746 |
Income tax expense | 3,674 |  |  | 5,673 |  |  | 2,139 |  |  | 7,598 |
EBITDA | 35,435 |  |  | 41,653 |  |  | 13,687 |  |  | 63,995 |
Less: |  |  |  |  |  |  |
Net, gain (loss) on derivative instruments | 18,904 |  |  | 8,121 |  |  | 25,928 |  |  | (16,466) |
Net cash settlements on derivative instruments | 795 |  |  | 9,964 |  |  | (390) |  |  | 26,572 |
Customer acquisition costs | 243 |  |  | 210 |  |  | 456 |  |  | 1,555 |
Plus: |  |  |  |  |  |  |
Non-cash compensation expense | 1,104 |  |  | 490 |  |  | 1,571 |  |  | 1,814 |
Non-recurring event - Winter Storm Uri | — |  |  | — |  |  | 60,000 |  |  | — |
Non-recurring legal settlement | (2,225) |  |  | — |  |  | (2,225) |  |  | — |
Adjusted EBITDA | $ | 14,372 |  |  | $ | 23,848 |  |  | $ | 47,039 |  |  | $ | 54,148 |

Reconciliation of Adjusted EBITDA to net cash provided in operating activities: |  |  |  |  |  |  |
| Three Months Ended June 30, |  | Six Months Ended June 30,
(in thousands) | 2021 |  | 2020 |  | 2021 |  | 2020
Net cash provided by operating activities | $ | 32,800 |  |  | $ | 32,394 |  |  | $ | 9,168 |  |  | $ | 71,783 |
Amortization of deferred financing costs | (258) |  |  | (240) |  |  | (517) |  |  | (490) |
Bad debt expense | (134) |  |  | (1,378) |  |  | 113 |  |  | (3,733) |
Interest expense | 1,552 |  |  | 1,193 |  |  | 2,863 |  |  | 2,746 |
Income tax expense | 3,674 |  |  | 5,673 |  |  | 2,139 |  |  | 7,598 |
Non-recurring event - Winter Storm Uri | — |  |  | — |  |  | 60,000 |  |  | — |
Non-recurring legal settlement | (2,225) |  |  | — |  |  | (2,225) |  |  | — |
Changes in operating working capital |  |  |  |  |  |  |
Accounts receivable, prepaids, current assets | (20,058) |  |  | (32,035) |  |  | (31,761) |  |  | (50,010) |
Inventory | 965 |  |  | 709 |  |  | (400) |  |  | (1,981) |
Accounts payable and accrued liabilities | 8,059 |  |  | 19,021 |  |  | 12,857 |  |  | 29,839 |
Other | (10,003) |  |  | (1,489) |  |  | (5,198) |  |  | (1,604) |
Adjusted EBITDA | $ | 14,372 |  |  | $ | 23,848 |  |  | $ | 47,039 |  |  | $ | 54,148 |
Cash Flow Data: |  |  |  |  |  |  |
Net cash provided by operating activities | $ | 32,800 |  |  | $ | 32,394 |  |  | $ | 9,168 |  |  | $ | 71,783 |
Cash flows used in investing activities | $ | (543) |  |  | $ | (43) |  |  | $ | (1,063) |  |  | $ | (579) |
Net cash provided (used) in financing activities | $ | (9,208) |  |  | $ | (8,198) |  |  | $ | 24,751 |  |  | $ | (49,248) |

The following table presents a reconciliation of Retail Gross Margin to operating income (loss) for each of the periods indicated.

Reconciliation of Retail Gross Margin to Operating income: |  |  |  |  |  |  |
| Three Months Ended June 30, |  | Six Months Ended June 30,
(in thousands) | 2021 |  | 2020 |  | 2021 |  | 2020
Operating income | $ | 29,943 |  |  | $ | 33,590 |  |  | $ | 2,073 |  |  | $ | 46,976 |
Plus: |  |  |  |  |  |  |
Depreciation and amortization | 5,413 |  |  | 8,010 |  |  | 11,449 |  |  | 16,806 |
General and administrative expense | 10,663 |  |  | 21,331 |  |  | 23,334 |  |  | 47,007 |
Less: |  |  |  |  |  |  |
Net asset optimization (expense) revenue | (114) |  |  | (82) |  |  | (254) |  |  | 239 |
Gain (loss) on non-trading derivative instruments | 18,898 |  |  | 7,964 |  |  | 25,952 |  |  | (16,569) |
Cash settlements on non-trading derivative instruments | 795 |  |  | 10,055 |  |  | (394) |  |  | 26,664 |
Non-recurring event - Winter Storm Uri | — |  |  | — |  |  | (64,900) |  |  | — |
Retail Gross Margin | $ | 26,440 |  |  | $ | 44,994 |  |  | $ | 76,452 |  |  | $ | 100,455 |
Retail Gross Margin - Retail Electricity Segment (1) | $ | 21,651 |  |  | $ | 35,573 |  |  | $ | 52,265 |  |  | $ | 66,379 |
Retail Gross Margin - Retail Natural Gas Segment | $ | 4,789 |  |  | $ | 9,421 |  |  | $ | 24,187 |  |  | $ | 34,076 |

(1) Retail Gross Margin - Retail Electricity Segment for the six months ended June 30, 2021 includes a $64.9 million add back related to winter storm Uri.