Underground pumped storage hydropower.

Adds underground pumped storage hydropower using: (1) abandoned coal mines; (2) abandoned quarries; or (3) other suitable sites; located in Indiana to the list of sources and technologies that qualify as "clean energy resources" for purposes of the statute governing the Indiana voluntary clean energy portfolio standard program. Provides that this technology qualifies as a "renewable energy resource" for purposes of the statute providing certain financial incentives for energy utilities to invest in clean energy projects. Requires the state utility forecasting group to include this technology in its annual study on the use, availability, and economics of clean energy resources in Indiana.