1. Designing Storage for Homes That Don’t Have Solar Yet

    Designing Storage for Homes That Don’t Have Solar Yet

    Much has been made of the interoperability problem with home energy storage systems. Existing solar customers need battery systems that can connect easily with their legacy equipment. AC-coupled storage has proliferated to solve that problem. When Maine-based Pika Energy got to work designing power electronics for a new residential storage platform, the team decided to go in a different direction.  "AC coupling is attractive because you can retrofit it. However, actually getting the new battery inverter to talk to the legacy PV inverter is not a simple thing to do," said company President and co-founder Ben Polito. "Do you want to send your best technician to figure out how to interact with that 2011 inverter in an optimal way? It becomes more like a science project than a scalable solution."

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