Stem & AEPCO deploy 40MW storage system and 20MW solar project in Arizona

June 12, 2024

Clean energy systems and services company Stem and Arizona Electric Power Cooperative (AEPCO), in partnership with renewable energy developer Prometheus Power, have deployed a combined 40MW energy storage system and a 20MW solar project in south-eastern Arizona.

The project was developed for Sulphur Springs Valley Electric Co-op (SSVEC), an AEPCO member co-op.

The project will incorporate Stem’s “AI-driven” clean energy software.

John Carrington, CEO of Stem, said: “More than 900 electric co-ops across 48 states make up the largest electric utility network in the US. 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 per cent of all future storage deployments. 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.”

Patrick Ledger, AEPCO executive vice president and CEO, added: “As part of our Reliable Energy Plan, AEPCO is focused on strategic investments in renewable energy assets and battery energy storage systems (BESS) to help fundamentally improve, diversify, and strengthen the AEPCO portfolio. With Stem’s proven solar and storage solutions and expertise, we can ensure economies of scale on larger projects so our member co-ops can benefit from the flexibility and reliability of new clean energy resources that will substantially reduce costs and provide more reliable clean energy for the communities we serve.”