Stem Inc has completed a front-of-the-meter solar-plus-storage project in Massachusetts that will participate in New England’s wholesale markets run by system operator New England ISO.

Energy storage system integrator and manufacturer Powin Energy has signed a deal to supply its new DC-coupled solutions to developer Amp for projects in the Northeast US.

The US industry deployed 168MW / 288MWh of energy storage in the second quarter of this year, the second highest quarterly figures on record, according to Wood Mackenzie Power & Renewables.

A “first-in-the-nation” policy called the Clean Peak Standard has been launched in Massachusetts, US, whereby a proportion of electricity used on the grid at times of highest demand must be considered ‘clean’.

Adding well-optimised energy storage to solar PV projects in the US state of Massachusetts can increase project revenues by up to 50%, Stem Inc has claimed, as the energy storage provider announced the completion of a front-of-meter solar project with 8MWh of storage.

Massachusetts has issued an emergency regulation to its Solar Massachusetts Renewable Target (SMART) programme, that includes mandating the addition of energy storage on projects over 500kW.

The projects developed through the state’s solar-plus-storage incentive programme are set to produce 11.2MWdc of energy, backed by 10.2MWh of storage.

NEC and developer Kearsage Energy have completed work on a 4.5MW solar PV array, combined with a 1.6MW / 2.8MWh AC-coupled battery energy storage system in Amesbury, Massachusetts.

Commercial energy storage ‘pioneer’ Stem Inc and NEC have announced a master supply agreement and wide-ranging partnership that will see the latter’s equipment and solutions used in solar-plus-storage projects in Stem’s pipeline.

A 6MW / 48MWh battery energy storage system paired to a 15MW diesel generator has gone online on Nantucket, in what has been described by project owner National Grid as the biggest system in New England to date.