Portfolio Standards (RPS) are state policies mandating a state
to generate a percent of its electricity from renewable sources.
Each state has a choice of how to fulfill this mandate using
a combination of renewable energy sources, including wind,
solar, biomass, geothermal, or other renewable sources. Some
RPSs will specify the technology mix, while others leave it
up to the market. Choices are critical because states don't
have the same renewable resources. For example, Arizona has
greater solar resources than Oregon, and North Dakota has
greater wind resources than Georgia.
of RPS Implementation
has begun an initiative to analyze the experience of states
with RPS implementation. To the extent that the data is
available, REPP will track and report the cost of renewables
to determine whether costs have declined under RPS policies.
REPP will also look at the evaluations conducted by states.
section of the REPP website discusses the relationship between
labor and renewable portfolio standards.
RPS map provides summaries of RPS policy, structure, and
implementation for U.S. states that have implemented RPS
Nevada Testimony to Nevada Public Service Commission, January
Nevada Testimony to Nevada Public Service Commission, April
of Concerned Scientists