In its home territory of Germany, energy storage provider Sonnen is making a play to replace utilities, but its business models in the US will instead emphasise cooperation with existing energy suppliers.

Arizona Public Service (APS) announced Wednesday that rather than rebuild miles of electricity transmission lines, it will install two battery storage systems totalling 8MWh in rural Punkin Center, Arizona — making it one of the first electricity companies in the US to utilise batteries instead of traditional infrastructure.

Arizona utility Tucson Electric Power (TEP) claims that the cost-effectiveness of a new large-scale solar-plus-storage facility under construction will allow it to provide “more solar energy to more customers for less money”.

NextEra Energy Resources will build a 10MW lithium-ion battery storage system paired with a 20MW PV installation for Arizona utility Salt River Project, with another battery system on the way.

Tucson Electric Power (TEP) has touted its efforts at reinforcing its grid with three separate energy storage projects.

An Arizona scheme to study the use of energy storage and smart inverters in integrating solar to the grid has contracted the deployment of 4MW of AES Energy Storage’s lithium battery systems.

The North American subsidiary of international investor-owned energy supplier E.ON has begun construction on its first energy storage project.

A company offering solar-plus-storage systems for the residential market has introduced a set of controls that allow consumers to adapt to utility rates and legislative changes with the flick of a switch.

Energy storage software and integration specialist Greensmith Energy will partner power firm E.ON Climate and Renewables and the utility Tucson Electric Power (TEP) to provide software control for a utility-scale energy storage system next to a solar array in Arizona.

E.ON Climate & Renewables North America is to build a 10MW battery energy storage facility with a 2MW solar array in collaboration with Arizonan utility Tucson Electric Power (TEP).