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The number of household solar power storage installations has grown exponentially over the past four years, with a year-on-year growth of 52 percent in 2022, Germany鈥檚 Solar Power Association BSW 厂辞濒补谤听丑补蝉听. 鈥淗alf of private home owners say they would consider storing their homemade solar power,鈥� a survey commissioned by the lobby group found. About 630,000 home storage units have already been installed in Germany. Nearly 30 percent of surveyed company managers said they planned to install solar power batteries in the next three years. 鈥淚nstalling a battery increasingly becomes the standard when new solar power arrays are mounted,鈥� BSW head Carsten K枚rnig said. 鈥淭his not only benefits the installations鈥� operators, but also supports the entire power system鈥檚 flexibility and security,鈥� K枚rnig said, calling storage units in private homes and commercial buildings 鈥渋ndispensable building blocks鈥� for the energy transition.

Storage units for solar power greatly increase the availability of generated electricity. Installations of solar power arrays on private homes had grown fast in the past year as a result of the energy crisis. According to BSW Solar, storage capacity in the country should increase from about 6.7 gigawatt hours in early 2023 to 55 gigawatt hours by 2030 to compensate for the generation fluctuations of weather-dependent renewables.