State utility regulators have approved spending more than $100 million for energy efficiency programs for residential, industrial and commercial customers.

The Rhode Island Public Utilities Commission unanimously approved the state's 2015 Energy Efficiency Program Plan. The plan funds the energy efficiency programs for electric and natural gas customers.

About $87 million was set aside for electric programs, such as providing high-efficiency lighting for homes and businesses. And $24.5 million was set aside for gas programs, such as rebates for high-efficiency heating systems and weatherization.

The plan is expected to generate about $2.45 in energy savings and other economic benefits for every $1 invested in the electric programs and $1.97 for every $1 invested in the natural gas programs.

The commission reviews the energy efficiency programs annually.