Flow battery manufacturer ViZn Energy Systems has won a contract to provide a 128kW/320kWh system for a US department of energy project.

News in brief: Nissan commits to longer range EV batteries from UK plant, a first in energy storage financing for Green Charge, American Vanadium plans acquisition of Gildemeister, Ceres and Honda developing solid oxide fuel cell stacks for power equipment.

SMA is aiming to tackle the market for retrofitting energy storage systems in to existing home PV installations, with a new AC-coupled version of its Sunny Boy inverter suitable for high voltage batteries.

News in brief: SolarEdge’s Powerwall-compatible StorEdge self-consumption solution is now available internationally; AES completes another 10MW project in Holland which will provide grid services; and Japan’s Sumitomo Corporation’s Willey Battery Utility is the latest energy storage system to join PJM’s frequency regulation market.

Placing a battery onto the grid is an economic investment. Matthew Hunt from the UK’s Chargesync discusses strategies for extracting the maximum value from devices and systems through optimising performance.

UK solar developers WElink Energy and British Solar Renewables (BSR) have signed a £1.1 billion (US$1.6 billion) deal with China National Building Materials Group (CNBM) to develop solar energy projects and zero-carbon homes in the UK.

California’s CalCharge is a partnership between public and private sector, aiming to accelerate the adoption of energy storage in the state. Andy Colthorpe of Energy Storage News spoke with CalCharge president Danny Kennedy, the Australia-born former chief of US residential PV installer Sungevity who has a colourful background in eco-activism and the programme’s recently appointed manager, Alex Luce.

Corporations and utilities are already interested in energy storage but must collaborate to advance deployment and lower costs, avoiding some of the past mistakes of the PV industry, according to the heads of one California-based industry group.

The unsung hero in the grid revolution is the data that enables new technology and provide more control of an increasingly complex system. Andy Colthorpe explored the growing role of Big Data in energy networks in a feature article for the downstream solar technology journal PV Tech Power.

DNV GL’s new recommended practice guidelines for grid-connected energy storage systems is aimed at “reducing risks” for investors and the wider community, the document’s lead author has said.