California’s Capital Programs & Climate Financing Authority adopted an Initial Resolution on May 21 supporting up to $1.1 billion in tax-exempt private activity bond financing for Aemetis projects, the company announced. The envelope covers three distinct asset classes: expansion of the Keyes dairy renewable natural gas system, underground CO2 sequestration development in Riverbank, and renewable diesel and sustainable aviation fuel production in Riverbank. An Initial Resolution does not guarantee final approval but starts the federal tax clock allowing reimbursement of qualified project costs incurred after the resolution date.
The procedural step matters because of which federal box it opens. Under federal tax reimbursement rules, qualified project costs incurred after the official intent date — the Initial Resolution — can be reimbursed from later bond proceeds, which pulls forward cost recovery for projects that face long pre-FID engineering and permitting cycles. Tax-exempt private activity bond financing also lowers Aemetis’s all-in capital cost relative to taxable debt, which matters where the SAF green premium needs every basis point of capital structure improvement it can get.
This Initial Resolution adopted by CPCFA further confirms the value of our projects, which reduce emissions, lower fuel costs, and create jobs and economic growth in California.
The quote, from Aemetis Chairman and CEO Eric McAfee, framed the resolution as validation; McAfee added that tax-exempt bonds at lower interest rates than other sources of financing have the potential to enhance Aemetis’s financial position. The mechanics are narrower than the headline figure. The Keyes RNG portion of the envelope finances construction of 40-plus additional dairy digesters and biogas pipeline connections, expanding on a base of 12 operating anaerobic digesters and a 36-mile biogas collection pipeline currently collecting from 15 dairies, with more than 50 dairies contracted to supply waste as the system expands. The Riverbank CO2 sequestration development is a geological CO2 storage asset whose permitting path is independent of the SAF and renewable diesel work; The Riverbank SAF and renewable diesel production line is the piece most directly exposed to the federal clean fuel production credit (45Z) and the RFS regulatory framework.
Aemetis also operates a 65 million gallon per year ethanol facility in Modesto, California, and an 80 million gallon per year biodiesel facility on the east coast of India, and supplies feedstock byproduct from ethanol production to roughly 80 dairies in the local supply network. The CPCFA bond vehicle is a conduit issuance: CPCFA is the issuer of record but the credit risk sits with Aemetis and the specific project structures supporting each tranche. Bondholders are exposed to project cashflows and whatever security package is negotiated at pricing, not to the State of California.
An Initial Resolution is not a Final Resolution. The release notes that issuance of tax-exempt bonds requires allocations from a statewide volume limit; next steps for a California private activity bond typically include California Debt Limit Allocation Committee (CDLAC) volume cap allocation, TEFRA public-approval hearings, and credit-market execution, any of which can take months and any of which can stall. Worth watching: whether Aemetis files for CDLAC allocation in the next cycle, how the financing is tranched across the three asset classes — dairy RNG debt has a longer track record with underwriters than newer SAF and CCS asset classes, which can affect tranche pricing and order — and whether the Riverbank SAF and renewable diesel piece reaches its own FID before bond closing.
