Like the sun and sand - solar and storage are a perfect pair. Storage addresses a fundamental problem of solar energy: while solar production peaks during midday, energy consumption is highest in the morning and evening. With storage, you can save the energy you produce for when you need it most.
Policies like Net Metering and Feed-in Tariffs used to make it a good deal for homeowners to sell excess solar energy back to their utilities. With those incentives disappearing, many homeowners find it makes more financial sense to store their extra energy and use it themselves.
Battery chemistry is progressing, allowing higher energy density in smaller, lighter batteries. The development of electric vehicles has helped propel battery chemistry forward, resulting in batteries that not only pack more power into a small space, but are also less expensive, safer, and longer-lasting.
Technology and chemistry improvements, along with increased production, have driven battery costs down. The price of lithium ion batteries dropped 90% between 1990 and 2005, and has continued to fall since.
Highly publicized natural disasters such as typhoons and tsunamis have caused a surge in demand for energy storage, specifically backup power solutions