Hybrid PV and wind power system relies on Saft Sunica batteries Saft Sunica batteries enable a hybrid PV (photovoltaic) and wind power system on Bullerö, the main island of a national park in the archipelago of Stockholm, to provide a reliable supply of electricity for visitor facilities and the park ranger all year round. The Sunica batteries, which are designed specifically for photovoltaic applications, are still going strong nine years after they replaced the previous lead-acid batteries and will not need replacing for many more years. Remote from grid Bullerö Island is remote from the nearest electricity grid and in 1986 the cost of installing an undersea cable to provide power for the visitor facilities and the park ranger, who lives on the island all year round, was estimated at aro

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