Aemetis, Inc
Aemetis, Inc. is a renewable fuels and renewable natural gas company headquartered in Cupertino, California, founded in 2006. It operates production assets that convert agricultural inputs and wastes into low- and negative-carbon transportation fuels and related co-products. The company’s current operating segments include a California ethanol plant in Keyes, California, a California dairy renewable natural gas (RNG) business that sells RNG and associated environmental credits, and an India biodiesel business centered on the Kakinada plant. Its economics are closely tied to commodity spreads (feedstocks vs. fuel prices) and to policy-driven credit markets such as LCFS credits and D3 RINs.
Fiscal year 2025 · change from previous year
Development 2020–2025
Business
Share of revenueEthanol production plus animal feed co-products and captured CO₂ from the Keyes, California facility.
RNG produced from dairy biogas and monetization of transportation fuel credits (D3 RINs and LCFS).
Biodiesel sold into the India fuel market and glycerin co-products from the Kakinada plant.
Customers
In the California Ethanol segment, Aemetis sells substantially all ethanol and key co-products (WDG, DCO, CDS) under a purchasing arrangement with J.D. Heiskell, which resells to customers designated by Aemetis. Ethanol marketing is concentrated through a designated fuel marketing company (Murex LLC) that resells to fuel blenders, while WDG distribution is handled by A.L. Gilbert, an adjacent animal feed company serving local dairies and feedlots. CO₂ captured from fermentation is sold to an industrial gas company connected by a dedicated pipeline, which upgrades it to commercial grade for food, beverage, and other end markets. In the California Dairy RNG segment, Aemetis sells RNG into the utility pipeline and monetizes the environmental attributes (D3 RINs and LCFS credits) largely through industry brokers, with transportation fuel customers reached via fuel dispensing company relationships. In India, biodiesel sales are primarily to government-owned Oil Marketing Companies (OMCs) for blending, while refined glycerin is sold to external customers in markets such as personal care, paints, and adhesives.
Purchase ethanol via designated counterparties (e.g., J.D. Heiskell/Murex) to supply fuel blenders and downstream marketers; value is tied to low-carbon fuel demand and pricing.
Buy WDG and other feed co-products through local distribution (e.g., A.L. Gilbert) as cost-effective animal nutrition inputs.
Brokers and obligated parties purchase D3 RINs and LCFS credits generated from RNG used as transportation fuel to meet regulatory compliance needs.
Government-owned fuel distributors buy biodiesel blendstock for blending with petroleum diesel; purchasing is influenced by allocation/tender timing and policy.
Buy refined glycerin for personal care, paints, and adhesives where product quality and price drive purchasing decisions.
Strategy
Aemetis’ near-term strategy emphasizes improving cash flow and resilience to commodity volatility by investing in facility upgrades and energy efficiency initiatives at the Keyes ethanol plant to reduce operating costs and lower carbon intensity. In dairy RNG, the company plans to operate existing digesters while building new digesters and extending pipeline infrastructure to increase RNG volumes and the generation of D3 RINs and LCFS credits. The company’s project buildout is closely linked to securing financing, including government-guaranteed debt and grant programs, and management notes efforts to find additional project and equipment financing to accelerate construction. In India biodiesel, the strategic focus is on maintaining reliability and quality as a supplier to OMCs and managing working capital and liquidity through tools such as receivables financing when procurement cycles create revenue gaps.
Improves margins and competitiveness in volatile corn/ethanol markets and can increase value in low-carbon fuel programs.
Higher RNG volumes increase transportation fuel sales and associated D3 RIN/LCFS credit generation, which are key revenue drivers for the segment.
Construction pacing for digesters/pipeline and other projects depends on access to government-backed debt, grants, and supplemental financing.
Geography
Aemetis operates across the United States and India, with major production assets in Keyes, California (ethanol and co-products) and Kakinada, India (biodiesel and glycerin). Segment revenue disclosures indicate that California Ethanol generated $153.2 million of revenue in 2025, California Dairy RNG generated $14.7 million, and India Biodiesel generated $29.7 million, reflecting a business mix that is primarily U.S.-based with a meaningful India exposure. The California businesses are directly exposed to U.S. fuel markets and California-specific policy mechanisms (LCFS) and infrastructure (utility pipeline interconnections for RNG). The India business is exposed to local fuel distribution dynamics where OMCs control a significant share of the distribution network and can pause purchases when allocations are fulfilled. Geographic footprint matters because it creates regulatory and counterparty concentration risk (California credit markets; India OMC procurement cycles) and operational risk tied to specific plants.
Risks
Aemetis operates in markets where input costs and product pricing are volatile, creating earnings and working-capital swings when spreads compress (e.g., corn and energy vs. ethanol; waste oils vs. biodiesel; credit prices for LCFS and D3 RINs). The company discloses that it is not currently profitable and has historically incurred significant losses, which can constrain its ability to fund operations and expansion. Its India operations face foreign regulatory, political, and market risks, including longer payment cycles and procurement interruptions; the company also experienced an OMC purchasing pause that materially reduced biodiesel sales until shipments resumed. Operational disruptions at highly automated plants (Keyes and Kakinada) and catastrophic events or cyberattacks could halt production and impair financial performance. In addition, policy and regulatory changes affecting renewable fuel mandates, tax credits, and environmental attribute markets can quickly change demand and realized pricing for its products.
- Sustained losses and lack of profitabilityImpact: HighLikelihood: High
The company states it is not currently profitable and has incurred significant historical losses, which could force curtailment of operations and limit expansion.
Exposure: Company-wide
- Foreign operations and India market/policy riskImpact: HighLikelihood: High
India sales are exposed to local laws and OMC procurement dynamics; the company disclosed an OMC purchasing pause that stopped biodiesel revenue for a period.
Exposure: India Biodiesel segment; OMC concentration
- Catastrophic events and cybersecurity disruptionImpact: MediumLikelihood: Medium
Keyes and Kakinada plants are highly automated and rely on network infrastructure; events such as earthquakes, power failures, or cyberattacks could interrupt production and data availability.
Exposure: Plant operations and IT systems
Accounting
Judgemental itemsManagement uses significant judgment to estimate cash needs and funding sources over the next 12 months; changes in commodity and credit markets can alter conclusions.
Impact: Affects going-concern style assessments, classification, and disclosure of financing needs.
Impairment triggers and fair value depend on projected segment cash flows and valuation models; adverse changes can lead to write-downs.
Impact: Can materially reduce asset carrying values and increase non-cash charges.
Legal title transfers when ethanol is placed into the finished ethanol tank leased by the counterparty, affecting the point in time revenue is recognized.
Impact: Impacts period revenue cut-off and working-capital metrics.
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Last updated: 24/09/2026