NIGP 40502: Alternative Fuels (Not Otherwise Classified)

NIGP 40502 Alternative Fuels (Not Otherwise Classified), Item code, encompasses the purchase and delivery of renewable diesel, biodiesel, compressed natural gas, hydrogen fueling infrastructure, and related alternative-fuel commodity and service products that state and local governments are actively procuring to support fleet operations and sustainability mandates. Recent solicitations show state and local buyers purchasing bulk renewable diesel and biodiesel fuel supplies with monitoring and delivery services, CNG and hydrogen fueling station operation and maintenance, RIN credit management for renewable natural gas attribution, and professional services evaluating fuel specification impacts—spanning transportation authorities, state energy departments, county and municipal fleet operations, and transit agencies across California, Washington, Massachusetts, Illinois, South Dakota, Connecticut, New Hampshire, and Utah.

Recent activity under the code reflects heavy procurement concentration among transit authorities and state transportation departments. The Orange County Transportation Authority issued back-to-back RFPs for compressed natural gas fueling station operation and maintenance ($2,181,165 for three years, proposals due July 8, 2026) and hydrogen mobile fuelers for fuel cell buses ($6,779,429 estimated, proposals due May 26, 2026). The County of Solano General Services Department solicited bulk fuel supply, delivery, and monitoring for unleaded gasoline and renewable diesel under IFB 405060226, with bids due July 20, 2026 and local-business preference, serving approximately 450,000 gallons annually across nine fuel storage tanks. The Washington State Department of Enterprise Services issued a reissued statewide four-category solicitation for lubricants, greases, gear oils, and diesel exhaust fluid (Solicitation 09225-02, bids due July 30, 2026) with approximately $5.1 million in annual historical sales. The Berkshire Regional Group Purchasing Program solicited cooperative fuel products (gasoline, diesel, heating oil, liquid propane) on behalf of thirty-two Berkshire County, Massachusetts municipalities (Solicitation FY2714151617, bids due April 17, 2026). Additional recent opportunities include the Sacramento County hydrogen refueling station design-build-operate-lease (RFS 2025-RFS-0019, responses due December 5, 2025), Illinois Department of Transportation District 3 diesel and biodiesel rebid (IFB 26-494DOT-FINAD-B-51341, bids due April 3, 2026), South Dakota state tankwagon fuel delivery (IFB 26IFB19786, bids due May 5, 2026), and municipal biodiesel and renewable diesel purchases from Santa Monica, Cambridge-Newton, and Nashua transit systems. The code shows sustained geographic spread across western, midwestern, and northeastern states, with particular concentration in California transit and county operations and New England municipal cooperative purchasing, reflecting broader state and local commitment to alternative-fuel fleet transition.