Case Study: SunGreen Systems achieves faster solar payback and higher customer savings with Stem

SunGreen Systems

SunGreen Systems, a Southern California-based provider of commercial solar and energy solutions, faced the challenge that changes in utility rate structures meant their customers' solar investments were not delivering optimal savings. Expensive on-peak rates often occurred in the evening when solar generation was low, forcing customers to rely on costly utility power. To address this, SunGreen partnered with vendor Stem to integrate energy storage into their offerings.

Stem provided a turnkey energy storage solution, leveraging its procurement expertise to secure better battery pricing and ensure on-time delivery for projects. This solar plus storage strategy implemented by Stem led to significant results for SunGreen's customers, including improved project payback times of 6-12 months compared to standalone solar. The increased savings drove higher uptake of the solutions and boosted SunGreen's revenues, with one project achieving annual savings of $645,000.

SunGreen Systems