SFPUC authorizes $1B in wastewater bonds as S&P, Moody's restore stable outlook

SFPUC authorizes $1B in wastewater bonds as S&P, Moody's restore stable outlookThe utility is strategically deploying taxable bonds for its Southeast Treatment Plant biosolids overhaul to maintain eligibility for federal tax credits and commercial offtake contracts.

The commission authorized up to $506 million in new taxable wastewater revenue bonds (2026 Series A) and up to $556 million in refunding bonds (2026 Series B).

Taxable financing is being utilized for the Biosolids Digester Facilities Project to prevent conflicts with anticipated tax credits and resource offtaker agreements.

S&P and Moody's affirmed the utility's ratings and restored a stable outlook, reversing a negative outlook issued by S&P in 2024.

Planned refundings, including the restructuring of 2010 Build America Bonds, are projected to generate $32.6 million in gross savings.

The San Francisco Public Utilities Commission (SFPUC) authorized over $1 billion in wastewater revenue bonds on July 28, 2026, advancing a strategic financing plan that balances federal tax credit eligibility with a newly stabilized credit profile. The commission approved the issuance of up to $506 million in 2026 Series A taxable bonds and up to $556 million in 2026 Series B refunding bonds. A significant portion of the new money will fund the Biosolids Digester Facilities Project (BDFP), which is converting the 1950s-era Southeast Treatment Plant into a modern resource recovery facility. According to a finance representative, the utility is deliberately utilizing taxable bonds for the BDFP on an interim basis to maintain maximum flexibility as the financing team negotiates offtake agreements for biogas, solids, and treated water. The taxable structure also prevents potential conflicts with federal tax credits the utility is pursuing. Once the facility reaches completion and commercial contracts are finalized, SFPUC plans to optimize its debt mix with a permanent refinancing. The bond authorization arrives alongside a major credit victory for the utility. S&P and Moody's have both affirmed SFPUC's ratings and restored its stable outlook. S&P had previously reduced the utility's outlook from stable to negative in 2024, prompting a concerted multi-year financial planning effort by the agency's senior leadership to address the rating agencies' concerns. Alongside the new debt, the Series B refunding targets older obligations, including 2010 Build America Bonds. Staff noted the refunding will reduce the utility's exposure to the federal program, which has seen its promised 35 percent subsidies reduced by sequestration. If current market rates hold, the three planned refunding transactions are expected to generate approximately $32.6 million in gross savings for ratepayers, including $12 million in the current year. To further optimize its portfolio, the commission also approved updates to its interim funding program. This includes replacing an existing Bank of America liquidity facility with a lower-cost Royal Bank of Canada facility, reducing annual fees from 42 to 33 basis points, and establishing a new $125 million facility with TD Bank. Additionally, the commission authorized a $400 million direct purchase of water revenue bonds with Wells Fargo to manage short-term reserve releases without accelerating long-term bond transactions.