Case Study: Reliance Metalcenter achieves 15% energy bill savings with Stem

Reliance Metalcenter lowers energy bills by 15 percent with Stem

Reliance Metalcenter, a 75,000‑square‑foot metal processing facility near San Diego operated by Reliance Steel & Aluminum Co., faced spiky electricity use from heavy cutting and processing equipment that made demand charges roughly 75% of its monthly bill. With rising utility demand rates and no dedicated energy team, Reliance Metalcenter turned to Stem and subscribed to Stem’s storage service, deploying a 36 kW PowerStore to provide a self‑driving solution.

Stem installed the 36 kW PowerStore and used its machine‑learning platform to store energy during low use and discharge during peaks, automatically optimizing for changing loads, rates and grid programs. The Stem system reduced demand charges by 20% (about a 15% reduction in overall energy bills), delivered approximately $5,200 in annual net savings (an estimated $52,000 over 10 years), and required minimal onsite labor.

Reliance Metalcenter

Sunshine Villagomez

Office Manager