Renewables group Acciona and partner Saft completed a 1 year pilot project on integrating a 1 MW lithium-ion battery onto an existing solar array in Spain, marking the first time such energy-storage technology has been used at a utility-scale PV installation in Europe.

The battery was capable of storing and then discharging 560kWh of electricity.

The outcome of the project resulted in the design of SCADA systems for PV+ storage power plants with the functionalities of power ramp control, primary and secondary frequency regulation, voltage regulation with active reactive power control and active power factor correction of the power plant. Acciona also developed algorithms to control the power ramps of the PV plant with lower use of the battery in order to increase its life.

Lithium-ion Battery