April 25th, 2014
This week’s “Top 5” includes a new storage project in New York, a partnership between Canadian and German companies, a new partnership between storage players in California, and more in-depth article about innovation in the storage sector and the evolution of retail electricity prices in Europe.


1. New York City’s Metropolitan Transit Authority (MTA) will deploy a Gildemeister 400 kWh CellCube vanadium redox flow battery. The project should cost $1.2m and the batteries (3*130 kWh) will be charged at night (i.e. by grid power). The battery will demonstrate how a flow battery can shave peak demand, integrate renewable energy and supply power in times of storm-induced shortages.

2. Eguana and Sonnenbatterie have concluded a partnership whereby Eguana will supply all the electronics (not just the inverter) to Sonnenbatterie residential storage solutions. The two companies already have an agreement made in May 2013. Since then Eguana supplied over 1000 inverters to Sonnenbatterie.

3. CalCharge is a new independent member-driven public-private partnership to drive energy storage in California. It aims among other objectives at fostering collaboration between companies and renowned research laboratories. Members include Duracell, VW, Eaton, Enervault, LG, Hitachi, Berkeley lab, a DOE laboratory, etc.

4. 10 innovative companies in the energy storage sector, with interesting technologies and business models to watch in the near future.

5. An interesting article on the evolution of European electricity retail prices based on data from Eurostat. These prices are a key factor for storage as they can for example influence self consumption with PV+storage.

Best Regards,