Let's cut to the chase: solar photovoltaics are rockstars at converting sunlight into electricity. . The AES Lawai Solar Project in Kauai, Hawaii has a 100 megawatt-hour battery energy storage system paired with a solar photovoltaic system. Sometimes two is better than one. The reason: Solar energy is not always produced at the time. . Solar energy represents a powerful and sustainable resource; however, its effectiveness is frequently limited by the intermittent nature of sunlight and the need for reliable energy storage systems. Together, these. . In simple words, it is a system that not only produces electricity thanks to solar panels but also stores it in dedicated batteries to be used when the sun is not shining. This DC power is then transformed into alternating current (AC) by an inverter and sent to your home's main panel to power your appliances.