On May 9, the Judge William J. Martinez of the U.S. District Court for the District of Colorado summarily dismissed a broad-based challenge to the Colorado Renewable Portfolio Standard ("RPS"), which argued that the RPS per se violates the "dormant" Commerce Clause of the United States Constitution. The decision supports the view that a RPS will pass muster under the Commerce Clause as long as it regulates in-state and out-of-state generators in an even-handed way, and does not impose restrictions on RPS eligibility that favor in-state generators over out-of-state generators. Energy & Environmental Legal Inst. v. Epel et al., No. 11-cv-00859-WJM-BNB (issued May 9, 2014).
Enacted by Colorado voters in 2004 and amended several times since, the Colorado RPS now requires Colorado's investor-owned utilities to obtain 30% of their electricity from renewable sources by 2020, while cooperatives serving 100,000 or more meters must meet a 20% standard, and smaller cooperatives and municipal utilities must meet a 10% standard. In 2011, plaintiff Energy and Environmental Legal Institute (then known as the American Traditions Institute) filed a lawsuit seeking to invalidate Colorado's RPS statute on Commerce Clause grounds. Last week's decision rejects that challenge in its entirety, although plaintiffs have indicated they plan to appeal to the U.S. Court of Appeals for the Tenth Circuit.