FranklinWH Systems to Power First U.S. City-Owned Residential Solar and Battery Pilot

The Big Picture: Key Points

  • FranklinWH Systems has been selected by the Ann Arbor Sustainable Energy Utility for a first-of-its-kind residential solar and battery pilot.
  • The pilot aims to improve grid reliability, lower energy costs, and expand access to locally generated renewable power in Ann Arbor, Michigan.
  • FranklinWH energy storage systems will be installed in approximately 150 homes, with plans to scale to 1,000 homes in 2027 and several thousand annually in the years ahead.
The city of Ann Arbor, Michigan, is taking a significant step towards a more sustainable energy future with the launch of a first-of-its-kind residential solar and battery pilot. The Ann Arbor Sustainable Energy Utility (A2SEU) has selected FranklinWH Systems to power this innovative initiative, which aims to improve grid reliability, lower energy costs, and expand access to locally generated renewable power. This pilot program is a groundbreaking example of how cities can lead the transition to more resilient, locally powered energy systems. The pilot will test how distributed home energy resources can improve grid reliability, lower energy costs, and expand access to locally generated renewable power. The opt-in program is available to residents in Ann Arbor’s Bryant neighborhood, where many households are energy-burdened, with some spending more than one-third of their income on utility bills. By pairing rooftop solar with battery storage, the program is designed to reduce costs while improving energy resilience at the household and community level.
Ann Arbor is demonstrating how cities can lead the transition to more resilient, locally powered energy systems,” said Gary Lam, CEO and cofounder of FranklinWH. “By combining solar and battery storage at the residential level, this model gives communities greater control over energy costs and reliability while accelerating the shift to clean energy.
The A2SEU was created in November 2024, when Ann Arbor voters approved the formation of the community-owned utility. The A2SEU operates as an optional, supplemental energy provider, delivering 100 percent locally generated renewable energy. As part of the pilot, FranklinWH systems, including the aPower S battery, will be installed in approximately 150 homes, with plans to scale to 1,000 homes in 2027 and several thousand annually in the years ahead.

Technical Details and Partnerships

The pilot program will utilize FranklinWH energy storage systems, which will be paired with rooftop solar installations from Michigan Solar Solutions, Homeland Solar, and Oak Electric Service. Texture’s distributed energy management software will aggregate the systems into a coordinated, utility-scale resource. FranklinWH currently participates in more than 25 utility-led virtual power plant (VPP) and demand response programs. The Ann Arbor pilot extends this model to a city-owned, residential scale, offering a potential blueprint for municipalities nationwide seeking to modernize their energy systems.

Benefits and Future Plans

The benefits of this pilot program are numerous. By reducing energy costs and improving energy resilience, the program can help alleviate energy burdened households in Ann Arbor. Additionally, the program can serve as a model for other cities looking to transition to more sustainable energy systems. As Gary Lam noted, this model gives communities greater control over energy costs and reliability while accelerating the shift to clean energy.

FAQ

Some questions that readers may have about this story include: What is the goal of the Ann Arbor Sustainable Energy Utility's pilot program? The goal of the pilot program is to improve grid reliability, lower energy costs, and expand access to locally generated renewable power in Ann Arbor, Michigan. How many homes will be participating in the pilot program? Approximately 150 homes will be participating in the pilot program, with plans to scale to 1,000 homes in 2027 and several thousand annually in the years ahead. What type of energy storage systems will be used in the pilot program? FranklinWH energy storage systems, including the aPower S battery, will be used in the pilot program.

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