sonnen builds first sonnen city in the USA

sonnen builds first sonnen city in the USA

A new city is being built in the US state of Arizona, where 3,000 homes will produce, store, and share their own power. In doing so, the German company has undertaken what is currently the biggest residential power storage project in the USA.

sonnen, a portfolio company of eCAPITAL, is installing its sonnenBatterie energy storage solution in 3,000 new homes in the US state of Arizona. This is part of the new concept by home builder and urban planner Mandalay Homes, which is building a new community in Prescott Valley in the US state of Arizona.

A photovoltaic system and a sonnenBatterie will be installed in all homes in Jasper, enabling every household to produce most of the electricity it consumes by itself. This will keep the power bill of each home very low from the outset.

The energy storage systems will also be interconnected and able to communicate with each other. This technology, which is already used for power sharing in the sonnenCommunity in Germany, will make it possible to create a virtual power plant with a capacity of 23 MWh and output of 11.6 MW. This large buffer can store energy during peak production times and then feed it back into the grid later when consumption is very high. In return, the sonnen-City will also be able to contribute to the public power grid.

‘This is the city of the future, a place where all residents produce, store and share their own energy. The fact that we were able to realise this project in Tesla’s home market territory demonstrates how we are surpassing Tesla when it comes to technology in America's energy sector,’ says Philipp Schröder, Managing Director of Sales and Marketing at sonnen.

The sonnenBatteries also interact with a smart home controller to store solar power as well as distribute it with precision to each home’s air conditioning systems, lighting, and other power consumers such as pool pumps.

Until now, the sonnenCommunity’s technology was limited to Europe and Australia. Now, for the first time, sonnen has developed a technology solution – and done so even without its own energy supplier’s license, as the American energy market is highly monopolized. sonnen uses its technology only on the property of the city and not on the side of the public grid, thereby circumventing the monopoly of the power companies.

Thanks to the decentralised supply structure, the new town of Jasper is also less susceptible to power outages. Because all homes can supply themselves with energy, they can even bridge long outages in the public grid, for example during natural disasters.

About sonnen
The sonnen Group is one of the fastest growing companies in Germany. In a ranking of the ‘Top 50 Smartest Companies 2016’ by the Massachusetts Institute of Technology (MIT), sonnen GmbH was listed alongside Amazon, Facebook and Tesla. Investors in the Allgäu company include the US technology corporation General Electric. sonnen already supplies over 60,000 people globally with clean energy. The sonnenCommunity is an online network based on the blockchain idea for sharing self-generated power.


eCAPITAL entrepreneurial Partners AG is a Münster-based alternative investment fund manager (AIFM) in accordance with EU-directive EuVECA. As a leading German venture capital firm, eCAPITAL has supported innovative entrepreneurs in future-oriented industries since 1999. The firm focuses on rapidly growing companies in the areas of Software / IT, Cleantech, Industry 4.0 and New Materials. Currently, eCAPITAL manages six funds with a total of 200 million euros under management.

Find more information under

sonnen GmbH
Mathias Bloch
Am Riedbach 1
87499 Wildpoldsried
Tel.: +49 8304 929 33 426
Email: m.bloch(at)

eCAPITAL entrepreneurial Partners AG
Bettina Schäfer
Hafenweg 24
48155 Münster
Tel.: +49 251 703 767 0
Email: info(at)