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Note 13 - Segment Information | 3 Months Ended
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Mar. 31, 2025
Notes to Financial Statements |
Segment Reporting Disclosure [Text Block] | 13. Segment Information Aemetis recognizes three reportable segments: “California Ethanol,” “California Dairy Renewable Natural Gas,” and “India Biodiesel.” The “California Ethanol” segment includes the Company’s 65 million gallon per year ethanol plant in Keyes, California, and the adjacent land leased to produce CO₂. The “California Dairy Renewable Natural Gas” segment includes the production and sale of Renewable Natural Gas ("RNG") and associated environmental attributes, consisting of anaerobic digesters located at dairies, a 36-mile biogas collection pipeline, a biogas upgrading hub that produces RNG from the biogas, a pipeline interconnect, and ongoing construction of additional digesters. The “India Biodiesel” segment includes the Company’s 80 million gallon per year biodiesel production plant in Kakinada, India, and administrative offices in Hyderabad, India. The Company has additional operating segments that were determined not to be separately reportable segments, including our key projects under development which consist of a sustainable aviation fuel and renewable diesel production in Riverbank and Carbon Capture and Underground Sequestration wells in California. Additionally, our corporate offices, Goodland Plant in Kansas, Riverbank Industrial Complex management, and our research and development facility in Minnesota are included in the “All Other” category. The following tables summarize financial information by reportable segment for the three months ended March 31, 2025 and 2024:
|  | For the three months ended March 31, 2025 |
|  | California Ethanol |  |  | California Dairy Renewable Natural Gas |  |  | India Biodiesel |  |  | All Other |  |  | Total |
Revenues |  | $ | 37,748 |  |  | $ | 2,443 |  |  | $ | 2,695 |  |  | $ | - |  |  | $ | 42,886 |
Gross profit (loss) |  |  | (4,938 | ) |  |  | 305 |  |  |  | (447 | ) |  |  | - |  |  |  | (5,080 | )
Net Income (Loss) |  |  | (14,910 | ) |  |  | 1,762 |  |  |  | (1,712 | ) |  |  | (9,669 | ) |  |  | (24,529 | )
Interest expense including amortization of debt fees |  |  | 8,461 |  |  |  | 948 |  |  |  | 456 |  |  |  | 3,828 |  |  |  | 13,693 |
Accretion and other expenses of Series A preferred units |  |  | - |  |  |  | 2,279 |  |  |  | - |  |  |  | - |  |  |  | 2,279 |
Income tax (benefit) expense |  |  | - |  |  |  | (6,995 | ) |  |  | 201 |  |  |  | 11 |  |  |  | (6,783 | )
Depreciation |  |  | 1,101 |  |  |  | 1,009 |  |  |  | 183 |  |  |  | 64 |  |  |  | 2,357 |
Stock-based compensation expense |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 2,308 |  |  |  | 2,308 |
Other amortization |  |  | 12 |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 12 |
EBITDA |  |  | (5,336 | ) |  |  | (997 | ) |  |  | (872 | ) |  |  | (3,458 | ) |  |  | (10,663 | )
Capital expenditures |  |  | 43 |  |  |  | 1,257 |  |  |  | 379 |  |  |  | 146 |  |  |  | 1,825 |
Total assets |  |  | 52,165 |  |  |  | 121,121 |  |  |  | 33,926 |  |  |  | 35,306 |  |  |  | 242,518 |
|  | For the three months ended March 31, 2024 |
|  | California Ethanol |  |  | California Dairy Renewable Natural Gas |  |  | India Biodiesel |  |  | All Other |  |  | Total |
Revenues |  | $ | 36,089 |  |  | $ | 3,792 |  |  | $ | 32,753 |  |  | $ | - |  |  | $ | 72,634 |
Gross profit (loss) |  |  | (5,658 | ) |  |  | 2,210 |  |  |  | 2,836 |  |  |  | - |  |  |  | (612 | )
Net Income (Loss) |  |  | (14,100 | ) |  |  | (3,166 | ) |  |  | 1,314 |  |  |  | (8,279 | ) |  |  | (24,231 | )
Interest expense including amortization of debt fees |  |  | 6,753 |  |  |  | 636 |  |  |  | 425 |  |  |  | 2,699 |  |  |  | 10,513 |
Accretion and other expenses of Series A preferred units |  |  | - |  |  |  | 3,311 |  |  |  | - |  |  |  | - |  |  |  | 3,311 |
Income tax expense |  |  | - |  |  |  | 35 |  |  |  | 843 |  |  |  | - |  |  |  | 878 |
Depreciation |  |  | 966 |  |  |  | 569 |  |  |  | 208 |  |  |  | 55 |  |  |  | 1,798 |
Stock-based compensation expense |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 2,969 |  |  |  | 2,969 |
Other amortization |  |  | 12 |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 12 |
EBITDA |  |  | (6,369 | ) |  |  | 1,385 |  |  |  | 2,790 |  |  |  | (2,556 | ) |  |  | (4,750 | )
Capital expenditures |  |  | 107 |  |  |  | 2,843 |  |  |  | 304 |  |  |  | 329 |  |  |  | 3,583 |
Total assets as of December 31, 2024 |  |  | 57,076 |  |  |  | 126,113 |  |  |  | 37,587 |  |  |  | 38,526 |  |  |  | 259,302 |
California Ethanol: Sales of ethanol, WDG, and corn oil to one customer (J.D. Heiskell) accounted for 99.4% and 99.7% of the Company’s California Ethanol segment revenues for the three months ended March 31, 2025 and 2024, respectively. J.D. Heiskell accounts for 99% of all domestic sales. California Dairy Renewable Natural Gas: Sales of RNG during the three months ended March 31, 2025 were to a single customer. We sold D3 RINs and LCFS credits to two other customers. India Biodiesel: During the three months ended March 31, 2025, revenues consisted of sales of glycerin and raw materials, and two customers accounted for 18% and 73% of the segment's revenues.

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- Definition The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 21 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-21 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name 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