Colorado regulators have approved Tri-State Generation and Transmission Association’s plan to add 1,657 MW of new resources from 2026 to 2031, despite objections about the inclusion of a new natural gas plant.

The Colorado PUC voted to approve Public Service Company of Colorado's plans to join SPP’s Markets+, with commissioners split on whether the move is a step toward or away from full RTO participation.

Members of the Colorado PUC expressed differing opinions on whether PSCo joining Markets+ would be in the public interest.

Markets+ stakeholders will have little opportunity to ease up in coming months despite a wave of favorable developments for the market.