Renewable energy firm Acciona Energia, the energy division of the Acciona Group, received independent certification body DNV GL’s first system-level certificate for an energy storage project on May 10 during the American Wind Energy Association’s 2018 Windpower Conference in Chicago, US.
The certificate ensures the hybrid system — a total of 1.7MW of storage harnessing excess power generated from a 3MW wind turbine — meets the industry required safety, performance and reliability standards.
The plant in Navarra, northern Spain, is equipped with two Samsung SDI lithium ion batteries located in separate containers: one a 1MW/0.39 MWh fast-response battery. The other is a slower-response 0.7 MW/0.7 MWh battery.
The system is managed by the company’s control software and monitored in real time by the company’s Renewable Energies Control Centre.
The certification process was carried out in line with the Gridstor Recommended Practice, which is based on industry standards and considers safety, performance and reliability for grid-connected energy storage systems.
Kim Mørk, executive vice president, for renewables certification at DNV GL, said: “Certifying new systems like Acciona’s grid-scale storage plant demonstrates that pioneering projects like this are meeting the required safety, performance and reliability standards and providing the industry with confidence in the quality of emerging new technologies.
“We are focusing our efforts to develop industry guidelines on grid-scale energy storage to help designers, manufacturers, investors, insurers and authorities mitigate risks and control costs in energy storage projects.”
Rafael Esteban, CEO Acciona Energy, said that with any emerging technology, qualification and certification was essential in understanding and managing risk.
“In the near future, the bodies involved in the approval and financing of storage systems worldwide will demand these certificates. Acciona also wants to be a pioneer in this area,” he said
“By applying for certification from such a solvent entity as DNV GL we can guarantee that our plant fulfils all the conditions to operate with full confidence.”