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Geographic Information
 12 Months Ended
Dec. 31, 2023
Segments, Geographical Areas [Abstract]  
Geographic Information GEOGRAPHIC INFORMATION
The following table presents our long-lived assets related to our operations by geographic area:
As of December 31,
 20232022
Long-lived Tangible Assets   
United States$1,670,322 $1,162,705 
Canada23,549 24,590
Europe12,948 9,937 
Total long-lived assets$1,706,819  $1,197,232 
We attribute revenues to customers based on the location of the customer. The following table presents revenues by geographic region:
Year Ended December 31,
202320222021
Revenues 
United States$1,161,775 $1,712,326 $1,126,141 
Canada63,36753,46145,782
Europe149,491 58,635 43,774 
Total revenues$1,374,633 $1,824,422 $1,215,697 
BUSINESS SEGMENT INFORMATION
Our reportable segments for the year ended December 31, 2023 were U.S. Regions, U.S. Federal, Canada, Alternative Fuels, and Europe. The remaining amounts are included in “All Other”. Europe was formerly included in “All Other” but was disaggregated due to growth in the segment in 2023. As a result, previously reported amounts have been reclassified for comparative purposes.
Our U.S. Regions, U.S. Federal, Canada, and Europe segments offer energy efficiency products and services which include the design, engineering, and installation of equipment and other measures to improve the efficiency and control the operation of a facility’s energy infrastructure, renewable energy solutions, and services which include the construction of small-scale plants that Ameresco owns or develops for customers that produce electricity, gas, heat, or cooling from renewable sources of energy and O&M services.
Our Alternative Fuels segment sells electricity, processed renewable gas fuel, heat or cooling, produced from renewable sources of energy, other than solar, and generated by small-scale plants that we own and O&M services for customer owned small-scale plants. Our U.S. Regions segment also includes certain small-scale solar grid-tie plants developed for customers. The “All Other” category offers consulting services and the sale of solar PV energy products and systems which we refer to as integrated-PV. These segments do not include results of other activities, such as corporate operating expenses not specifically allocated to the segments. Certain reportable segments are an aggregation of operating segments.
For the years ended December 31, 2023, 2022, and 2021, 71.8%, 46.0%, and 67.0%, respectively, of our revenues have been derived from federal, state, provincial, or local government entities, including public housing authorities, public universities and municipal utilities. The U.S. federal government, which is considered a single customer for reporting purposes, constituted 29.3%, 21.5%, and 32.3% of our consolidated revenues for the years ended December 31, 2023, 2022, and 2021, respectively. Revenues from the U.S. federal government are included in our U.S. Federal segment. Other than the U.S. federal government, one customer represented 39.6% of our revenues during the year ended December 31, 2022. Revenues from this customer is included in our U.S. Regions segment.
The reports of our chief operating decision maker do not include assets at the operating segment level.
The table below presents our business segment information and reconciliation to our consolidated financial statements:
 U.S. RegionsU.S. FederalCanadaAlternative FuelsEuropeAll OtherTotal
2023
Revenues$557,122 $402,884 $70,110 $117,075 $152,842 $74,600 $1,374,633 
Earnings from unconsolidated entities— 1,758 — — — — 1,758 
(Gain) loss on derivatives(2,326)857 (136)497 — — (1,108)
Net interest expense (income)6,169 1,429 834 16,019 2,477 (6)26,922 
Depreciation and intangible asset amortization27,060 5,343 1,626 26,160 2,290 1,650 64,129 
Unallocated corporate activity— — — — — — (68,372)
Income before taxes, excluding unallocated corporate activity38,746 49,237 3,813 6,215 4,188 4,442 106,641 
2022
Revenues1,123,343 391,891 58,558 114,459 61,645 74,526 1,824,422 
Earnings from unconsolidated entities— 1,647 — — — — 1,647 
(Gain) loss on derivatives(354)— (152)294 — — (212)
Net interest expense (income)6,948 1,231 917 8,657 25 (3)17,775 
Depreciation and intangible asset amortization21,463 4,905 1,702 23,354 575 433 52,432 
Unallocated corporate activity— — — — — — (71,180)
Income before taxes, excluding unallocated corporate activity88,531 50,866 2,554 22,989 5,589 6,370 176,899 
2021
Revenues551,118 392,948 49,483 111,223 46,164 64,761 1,215,697 
Loss from unconsolidated entities(56)— — — (62)— (118)
(Gain) loss on derivatives(1,017)— (73)1,330 — — 240 
Net interest expense6,255 1,294 879 5,793 378 — 14,599 
Depreciation and intangible asset amortization15,699 4,666 1,872 21,080 716 724 44,757 
Unallocated corporate activity— — — — — — (47,361)
Income before taxes, excluding unallocated corporate activity38,285 52,388 1,581 27,774 2,997 2,480 125,505 
See Note 3 for additional information about our revenues by product line.