While the energy storage capacity of grid batteries is still small compared to the other major form of grid storage, with 200 GW power and 9000 GWh energy storage worldwide as of 2025 according to , the battery market is catching up very fast in terms of power generation capacity as price drops.
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A complete list of incentives is maintained at the Database of State Incentives for Renewable Energy (DSIRE). Most solar power systems are grid connected and use laws to receive compensation for electricity that is not consumed on site and exported to the grid. leads the nation with the least restrictive net metering law, and California leads in total number of home.
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