HI SB1479

Provides a 25 percent income tax credit to individual and corporate taxpayers for installation of clean energy storage systems in Hawaii.

Defines "clean energy storage system" as a system that stores electrical energy from renewable sources, stores at least 10 kilowatt hours of energy, can output 2 kilowatts for 4 hours, and has at least 80 percent roundtrip energy storage efficiency.

Adds clean energy storage systems to existing renewable energy tax credits alongside solar energy systems (35 percent credit) and wind-powered energy systems (20 percent credit).

Allows multiple owners of a single system to share a single tax credit apportioned by their contribution to the cost.

Applies to taxable years beginning after December 31, 2011.