Note 1 - Summary of Significant Accounting Policies	3 Months Ended
Mar. 31, 2024
Notes to Financial Statements
Basis of Presentation and Significant Accounting Policies [Text Block]	1. Summary of Significant Accounting Policies *Nature of Activities* Founded in 2006 and headquartered in Cupertino, California, Aemetis, Inc. (collectively with its subsidiaries on a consolidated basis referred to herein as “Aemetis,” the “Company,” “we,” “our” or “us”) is an international renewable natural gas and renewable fuels company focused on the operation, acquisition, development, and commercialization of innovative technologies to produce low and negative carbon intensity renewable fuels that replace fossil-based products. We do this by building a local circular bioeconomy using agricultural products and waste to produce low carbon, advanced renewable fuels that reduce greenhouse gas ("GHG") emissions and improve air quality. Our current operations include: ► California Ethanol - We own and operate a 65 million gallon per year capacity ethanol production facility in Keyes, California (the “Keyes Plant”). In addition to low carbon renewable fuel ethanol, the Keyes Plant produces Wet Distillers Grains (“WDG”), Distillers Corn Oil (“DCO”), and Condensed Distillers Solubles (“CDS”), all of which are sold as animal feed to local dairies and feedlots. The Keyes Plant also sells CO₂ to Messer Gas who converts it to liquid and sells it to food, beverage, and industrial customers. We are implementing several energy efficiency initiatives at the Keyes Plant focused on reducing operating costs and lowering the carbon intensity of our fuel. ► California Dairy Renewable Natural Gas - We produce Renewable Natural Gas (RNG) in central California. Our facilities consist of eight anaerobic digesters that produce biogas from dairy waste, a 36-mile biogas collection pipeline leading to a central upgrading hub, and an interconnect to inject the RNG into the utility natural gas pipeline for delivery to customers for use as transportation fuel. We are actively expanding our RNG production dairies, with several additional digesters under construction, agreements with a total of 43 dairies, and environmental review completed for an additional 24 miles of pipeline. We are also building our own RNG dispensing station, which is planned to begin operating in 2024. ► India Biodiesel - We own and operate a plant in Kakinada, India (“Kakinada Plant”) with a capacity to produce about 60 million gallons per year of high-quality distilled biodiesel from a variety of vegetable oil and animal waste feedstocks. The Kakinada Plant is one of the largest biodiesel production facilities in India. The Kakinada Plant can also distill the crude glycerin byproduct from the biodiesel refining process into refined glycerin, which is sold to the pharmaceutical, personal care, paint, adhesive, and other industries. In addition, we are actively growing our business by seeking to develop or acquire new facilities, including the following key projects: ► Sustainable Aviation Fuel and Renewable Diesel – We are developing a sustainable aviation fuel and renewable diesel (“SAF/RD”) production plant to be located at the Riverbank Industrial Complex in Riverbank, CA. The plant is currently designed to produce an expected 90 million gallons per year of SAF/RD from renewable oil and fats obtained from the Company’s other biofuels plants and other sources. The plant will use low-carbon hydroelectric electricity and renewable hydrogen that is generated within the plant’s own processes using byproducts of the SAF/RD production. In 2023, we received approval of the Use Permit and CEQA for the development of the plant, and in March 2024, we received the Authority to Construct air permits for the plant. We are continuing with the engineering and other required development activities for the plant. ► Carbon Capture and Underground Sequestration – We are developing Carbon Capture and Underground Sequestration (“CCUS”) facilities that will inject carbon dioxide captured from air emissions deep into the ground for geologic storage to reduce emissions to the atmosphere of greenhouse gases that contribute to global warming. In May 2023, the Company received a permit from the State of California to build a geologic characterization well that will provide information for the permitting and design of a CCUS well to be located in Riverbank, California. The Company plans to construct the geologic characterization well in 2024 and is at the same time continuing engineering, permitting and other development activities for the sequestration well. The Company’s current and planned businesses produce renewable fuels and reduce carbon emissions, while generating valuable Renewable Fuel Standard credits, California Low Carbon Fuel Standard credits, and federal tax credits. *Basis of Presentation and Consolidation* These consolidated financial statements include the accounts of Aemetis, Inc. and its subsidiaries. We consolidate all entities in which we have a controlling financial interest. A controlling financial interest is usually obtained through ownership of a majority of the voting interests. However, an enterprise must consolidate a variable interest entity (“VIE”) if the enterprise is the primary beneficiary of the VIE, even if the enterprise does not own a majority of the voting interests. The primary beneficiary is the party that has both the power to direct the activities of the VIE that most significantly impact the VIE’s economic performance, and the obligation to absorb losses or the right to receive benefits from the VIE that could potentially be significant to the VIE. We consider Aemetis Biogas LLC ("ABGL") to be a VIE because the Company owns all of the outstanding common units of ABGL and is the primary beneficiary of ABGL's operations; accordingly, the assets, liabilities, and operations of ABGL are consolidated in these financial statements. All intercompany balances and transactions have been eliminated in consolidation. The accompanying consolidated condensed balance sheet as of March 31, 2024, the consolidated condensed statements of operations and comprehensive loss for the three months ended March 31, 2024 and 2023, the consolidated condensed statements of cash flows for the three months ended March 31, 2024 and 2023, and the consolidated condensed statements of stockholders’ deficit for the three months ended March 31, 2024 and 2023 are unaudited. The consolidated condensed balance sheet as of December 31, 2023, was derived from the 2023 audited consolidated financial statements and notes thereto. The consolidated condensed financial statements in this report should be read in conjunction with the 2023 audited consolidated financial statements and notes thereto included in the Company’s annual report on Form 10-K for the year ended December 31, 2023. The accompanying consolidated condensed financial statements have been prepared in accordance with accounting principles generally accepted in the United States (“U.S. GAAP”) and pursuant to the rules and regulations of the SEC. Certain information and footnote disclosures normally included in financial statements prepared in accordance with U.S. GAAP have been condensed or omitted pursuant to such rules and regulations. In the opinion of Company’s management, the unaudited interim consolidated condensed financial statements as of and for the three months ended March 31, 2024 and 2023 have been prepared on the same basis as the audited consolidated statements as of and for the year ended December 31, 2023 and reflect all adjustments, consisting primarily of normal recurring adjustments, necessary for the fair presentation of its statement of financial position, results of operations and cash flows. The results of operations for the three months ended March 31, 2024 are not necessarily indicative of the operating results for any subsequent quarter, for the full fiscal year or any future periods. There have been no material changes to our significant accounting policies disclosed in Note 1 - Nature of Activities and Summary of Significant Accounting Policies of the Notes to the Consolidated Financial Statements included in the Company's Annual Report on Form 10-K for the fiscal year ended December 31, 2023.

Note 1 - Summary of Significant Accounting Policies

3 Months Ended

Mar. 31, 2024

Basis of Presentation and Significant Accounting Policies [Text Block]

1. Summary of Significant Accounting Policies

Nature of Activities

Founded in 2006 and headquartered in Cupertino, California, Aemetis, Inc. (collectively with its subsidiaries on a consolidated basis referred to herein as “Aemetis,” the “Company,” “we,” “our” or “us”) is an international renewable natural gas and renewable fuels company focused on the operation, acquisition, development, and commercialization of innovative technologies to produce low and negative carbon intensity renewable fuels that replace fossil-based products. We do this by building a local circular bioeconomy using agricultural products and waste to produce low carbon, advanced renewable fuels that reduce greenhouse gas ("GHG") emissions and improve air quality. Our current operations include:

► California Ethanol - We own and operate a 65 million gallon per year capacity ethanol production facility in Keyes, California (the “Keyes Plant”). In addition to low carbon renewable fuel ethanol, the Keyes Plant produces Wet Distillers Grains (“WDG”), Distillers Corn Oil (“DCO”), and Condensed Distillers Solubles (“CDS”), all of which are sold as animal feed to local dairies and feedlots. The Keyes Plant also sells CO₂ to Messer Gas who converts it to liquid and sells it to food, beverage, and industrial customers. We are implementing several energy efficiency initiatives at the Keyes Plant focused on reducing operating costs and lowering the carbon intensity of our fuel.

► California Dairy Renewable Natural Gas - We produce Renewable Natural Gas (RNG) in central California. Our facilities consist of eight anaerobic digesters that produce biogas from dairy waste, a 36-mile biogas collection pipeline leading to a central upgrading hub, and an interconnect to inject the RNG into the utility natural gas pipeline for delivery to customers for use as transportation fuel. We are actively expanding our RNG production dairies, with several additional digesters under construction, agreements with a total of 43 dairies, and environmental review completed for an additional 24 miles of pipeline. We are also building our own RNG dispensing station, which is planned to begin operating in 2024.

► India Biodiesel - We own and operate a plant in Kakinada, India (“Kakinada Plant”) with a capacity to produce about 60 million gallons per year of high-quality distilled biodiesel from a variety of vegetable oil and animal waste feedstocks. The Kakinada Plant is one of the largest biodiesel production facilities in India. The Kakinada Plant can also distill the crude glycerin byproduct from the biodiesel refining process into refined glycerin, which is sold to the pharmaceutical, personal care, paint, adhesive, and other industries.

In addition, we are actively growing our business by seeking to develop or acquire new facilities, including the following key projects:

► Sustainable Aviation Fuel and Renewable Diesel – We are developing a sustainable aviation fuel and renewable diesel (“SAF/RD”) production plant to be located at the Riverbank Industrial Complex in Riverbank, CA. The plant is currently designed to produce an expected 90 million gallons per year of SAF/RD from renewable oil and fats obtained from the Company’s other biofuels plants and other sources. The plant will use low-carbon hydroelectric electricity and renewable hydrogen that is generated within the plant’s own processes using byproducts of the SAF/RD production. In 2023, we received approval of the Use Permit and CEQA for the development of the plant, and in March 2024, we received the Authority to Construct air permits for the plant. We are continuing with the engineering and other required development activities for the plant.

► Carbon Capture and Underground Sequestration – We are developing Carbon Capture and Underground Sequestration (“CCUS”) facilities that will inject carbon dioxide captured from air emissions deep into the ground for geologic storage to reduce emissions to the atmosphere of greenhouse gases that contribute to global warming. In May 2023, the Company received a permit from the State of California to build a geologic characterization well that will provide information for the permitting and design of a CCUS well to be located in Riverbank, California. The Company plans to construct the geologic characterization well in 2024 and is at the same time continuing engineering, permitting and other development activities for the sequestration well.

The Company’s current and planned businesses produce renewable fuels and reduce carbon emissions, while generating valuable Renewable Fuel Standard credits, California Low Carbon Fuel Standard credits, and federal tax credits.

Basis of Presentation and Consolidation

These consolidated financial statements include the accounts of Aemetis, Inc. and its subsidiaries. We consolidate all entities in which we have a controlling financial interest. A controlling financial interest is usually obtained through ownership of a majority of the voting interests. However, an enterprise must consolidate a variable interest entity (“VIE”) if the enterprise is the primary beneficiary of the VIE, even if the enterprise does not own a majority of the voting interests. The primary beneficiary is the party that has both the power to direct the activities of the VIE that most significantly impact the VIE’s economic performance, and the obligation to absorb losses or the right to receive benefits from the VIE that could potentially be significant to the VIE. We consider Aemetis Biogas LLC ("ABGL") to be a VIE because the Company owns all of the outstanding common units of ABGL and is the primary beneficiary of ABGL's operations; accordingly, the assets, liabilities, and operations of ABGL are consolidated in these financial statements.

All intercompany balances and transactions have been eliminated in consolidation.

The accompanying consolidated condensed balance sheet as of March 31, 2024, the consolidated condensed statements of operations and comprehensive loss for the three months ended March 31, 2024 and 2023, the consolidated condensed statements of cash flows for the three months ended March 31, 2024 and 2023, and the consolidated condensed statements of stockholders’ deficit for the three months ended March 31, 2024 and 2023 are unaudited. The consolidated condensed balance sheet as of December 31, 2023, was derived from the 2023 audited consolidated financial statements and notes thereto. The consolidated condensed financial statements in this report should be read in conjunction with the 2023 audited consolidated financial statements and notes thereto included in the Company’s annual report on Form 10-K for the year ended December 31, 2023. The accompanying consolidated condensed financial statements have been prepared in accordance with accounting principles generally accepted in the United States (“U.S. GAAP”) and pursuant to the rules and regulations of the SEC. Certain information and footnote disclosures normally included in financial statements prepared in accordance with U.S. GAAP have been condensed or omitted pursuant to such rules and regulations.

In the opinion of Company’s management, the unaudited interim consolidated condensed financial statements as of and for the three months ended March 31, 2024 and 2023 have been prepared on the same basis as the audited consolidated statements as of and for the year ended December 31, 2023 and reflect all adjustments, consisting primarily of normal recurring adjustments, necessary for the fair presentation of its statement of financial position, results of operations and cash flows. The results of operations for the three months ended March 31, 2024 are not necessarily indicative of the operating results for any subsequent quarter, for the full fiscal year or any future periods.

There have been no material changes to our significant accounting policies disclosed in Note 1 - Nature of Activities and Summary of Significant Accounting Policies of the Notes to the Consolidated Financial Statements included in the Company's Annual Report on Form 10-K for the fiscal year ended December 31, 2023.