On May 4, 2017, Maryland became the first state in the country to offer a tax credit for energy storage systems with Governor Larry Hogan’s (R) signing of Senate Bill No. 758 (available here).

The law provides a tax credit for certain costs of installing an energy storage system. Energy storage systems include systems used to store electrical energy, or mechanical, chemical, or thermal energy that was once electrical energy, for use as electrical energy at a later date or in a process that offsets electricity use at peak times. The tax credit is not limited to storage systems that are charged by renewable energy sources.[1]  The tax credit is up to $5,000 for a system installed on a residential property and the lesser of $75,000 and 30 percent of the cost of the energy storage system for a system installed on a commercial property (which presumably would include a utility). The tax credit would apply to systems installed between January 1, 2018, and December 31, 2022. The tax credit may only be used to offset Maryland income tax liability (i.e., it cannot be applied against other types of Maryland taxes such as excise tax) and may not be carried forward to another taxable year.  The law sets a limit of $750,000 on the aggregate tax credits issued to all taxpayers in a taxable year; such credits to be issued on a first-come, first-served basis.
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