Stem and Arizona Electric Power Cooperative (AEPCO), in partnership with Prometheus Power, announced the successful deployment of a co-located storage and solar project to help deliver clean, reliable power to its distribution co-ops and public power members.

The project for Sulphur Springs Valley Electric Co-op (SSVEC), an AEPCO member co-op, includes a 40-MWh energy storage system and an existing 20-MW photovoltaic system that will integrate Athena, Stem’s AI-driven clean energy software, to continuously operate and monitor the storage system for maximized performance on a single, unified platform. The SSVEC project is the first of three similarly sized deployments that Stem will collaborate on with Prometheus to provide Stem’s services for AEPCO’s other managing co-ops. All three projects are expected to come online by the end of the year.

“More than 900 electric co-ops across 48 states make up the largest electric utility network in the U.S. The segment is forecasted to be one of the fastest growing segments of the front-of-the-meter (FTM) market through the end of this decade and is projected to represent over 20% of all future storage deployments,” said John Carrington, CEO of Stem. “Stem’s unique combination of AI-driven software, hardware and services is enabling enhanced value and project returns at scale for co-ops and their members. We are excited to bring our proven capabilities and market experience to AEPCO and their members.”

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