Solar-Panel 'Clustering' Coming to Scores of Army Homes on Hawaii - CleanTechnica

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Solar-Panel “Clustering” Coming To Scores Of Army Homes On Hawaii

Hawaii is known for many things, like its beautiful beaches, tropical forests, clear blue waters, and plentiful sunshine throughout the year. It is one of the most visited places on earth, with nearly 9.2 million people visiting the Aloha State just in 2022 alone. Hawaii is also a popular destination for retired military personnel to live in. It is home to 12 military bases, nearly 40,000 active duty members, around 112,000 veterans, and 9,400 national guardsmen and reservists.

Solar power clustering is when many residential unit PV and energy storage systems are linked together in an energy network or “cluster.” When any networked unit’s system has excess solar generation that would otherwise be lost, it is immediately shared in real-time with other linked units that have loads above their solar generation.

Six homes are normally to be wired up in a Holu Hou Energy Share network, and each home will have about 10 kW of PV and 25 kWh of energy storage. Homes will be grouped mostly according to proximity. Electric lines linking the cluster will need to be buried — therefore, trenching will be necessary. Although, groups will be designed to minimize trenching across asphalt.

“We can get the maximum benefit sharing at about six units,” Hansen said. “Beyond that, you can add more units if you want, but you’ve already reached the maximum benefit of the sharing.” “You want to get 75% to 80% of the electricity for the residents to be coming from solar,” he said. “That’s kind of the magic number. The sharing allows you to do that and be at that sweet spot while not exporting [to the main grid] … because in California or Hawaii, you don’t get paid very much for that.” In 2015, the Hawaii Public Utilities Commission issued a rule that slashed the amount customers could get for exporting surplus solar energy to Hawaiian Electric Co.

 

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