Prescott, Arizona sees around 277 days of sunshine every year. Arizona-based house builder Mandalay Homes plans to take advantage of all that sunlight in 3,000 new homes to be built in the city, all equipped with rooftop solar panels and batteries from German company Sonnen GmbH. The price of the batteries will be included in the sale price of the homes.


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Mandalay Homes and Sonnen have partnered to allow homeowners to store extra solar power in Sonnen batteries that cost between $10,000 and $20,000 on their own. Sonnen and Mandalay Homes hope they can work out an arrangement so utilities will pay homeowners to use power stored in their batteries. According to Reuters, the 3,000 batteries, offering eight megawatt-hours of electricity, basically create a virtual power plant that could power around 5,000 homes for a day.

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Sonnen senior vice president Blake Richetta said even if utilities don’t purchase the energy, homeowners would save money since they won’t have to purchase as much power – if any – from the grid.

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There’s no firm agreement as of yet, although Mandalay and Sonnen have reportedly been in talks for a few months with Arizona Public Service and Salt River Project. A Salt River Project spokesperson told Reuters there aren’t any agreements in the works; Arizona Public Service declined to comment but did say batteries “can provide benefit to both our customers and the grid.”

The Prescott community will be the first one like it in America, according to Sonnen and Mandalay. Reuters said in Germany, Sonnen has many such communities, but the idea is still fairly new in the United States. Mandalay Homes is a certified United States Department of Energy (DOE) ZERO Energy Ready Home builder, according to their website, and have earned multiple awards from the DOE for energy efficiency.

There are around 1,000 Sonnen batteries in America right now, although the company hopes to increase that number to at least 20,000 by 2020, and deals such as the one with Mandalay Homes should help.

+ Mandalay Homes

+ Sonnen

Via Reuters

Images via Mandalay Homes Facebook and Sonnen GmbH