Encina Wastewater Authority awards Willdan Group $31M co-gen contract

July 16, 2026 |

In California, Willdan Group, Inc. has been selected by the Encina Wastewater Authority (Encina) for a $31 million design-build contract to deliver a renewable cogeneration project. This project will use renewable biogas generated from wastewater treatment to produce on-site electricity and support resilient plant operations. This high-efficiency renewable energy system will include a new biogas conditioning system, low-emission generators, emissions reduction upgrades to existing generators, and a battery energy storage system with a microgrid controller.

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Category: Fuels

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