Reliable portfolios in 2045 for Southwest utilities include a mix of firm, renewable and storage resources, an E3 study found.Reliable portfolios in 2045 for Southwest utilities include a mix of firm, renewable and storage resources, an E3 study found.

Reliable portfolios in 2045 for Southwest utilities include a mix of firm, renewable and storage resources, an E3 study found. | E3

Firm resources, with natural gas as the main option, will be critical for achieving resource adequacy in the Desert Southwest over the next two decades, a new study found.