Idaho Power Co. on March 15 announced that hydroelectric power accounted for nearly half of the utility's energy portfolio in 2017, with contracts for wind, solar and other renewable resources accounting for an additional 18.7%.

In 2017, 76% of Idaho Power's electric supply came from company-owned generation resources, and 68% was carbon-free. Hydroelectricity accounted for 49.54% of the utility's energy portfolio in 2017. The IDACORP Inc. subsidiary owns and operates 17 hydroelectric plants on the Snake River and its tributaries.

Coal and natural gas combined to make up 26.65% of Idaho Power's 2017 portfolio. The company's generation from its coal fired plants was 18.28%, down from 24.42% in 2016. Idaho Power generated 8.37% of its power from natural gas in 2017, down from 10.39% in 2016.

Power purchased under long-term agreements from wind, solar and other renewable resources accounted for 18.7% of Idaho Power's 2017 portfolio. Idaho Power sells renewable energy credits from long-term purchases of renewable energy and uses the proceeds to offset power supply costs for customers.