Beyond Renewable Portfolio Standards

Posted by Content Coordinator on Friday, September 13th, 2013

NATIONAL RENEWABLE ENERGY LABORATORY

Executive Summary

Several Western states have renewable portfolio standard (RPS) requirements that have driven significant expansion of wind, solar, and geothermal power. This study examines the renewable energy resources likely to remain undeveloped in the West by the time all these requirements have culminated in 2025. Development beyond that point will likely depend on the best of these remaining resources—where they are located, what it takes to get them to market, and how cost effectively they fit into a diverse portfolio of electric generation technologies.

While the bulk of this study concerns future renewable energy supply, its aim is to reduce some of the present uncertainty that complicates long-term planning. These findings about the renewable resources likely to be available in 2025 can inform today’s discussions about policies targeting future development—policies that might be different from the RPS model. Many important factors outside the scope of this study are likely to affect what those policies are. The aim here is not to recommend a path, but to assess the supply conditions that—with many other factors—might affect future state policies and utility business decisions.

So far, most western utilities have relied primarily on renewable resources located close to the customers being served. This appears to be enough to keep most states on track to meet their final RPS requirements. What happens next depends on several factors that are difficult to predict at this point in time. These factors include trends in the supply and price of natural gas, greenhouse gas and other environmental regulations, changing consumer preferences, technological breakthroughs, and future public policies and regulations. Changes in any one of these factors could make future renewable energy options more or less attractive.

Nevertheless, it is possible to characterize the stock of renewable resources likely to remain undeveloped after RPS requirements are met, and to do so with a reasonably high degree of confidence. That is the purpose of this report. While the study does not by itself answer questions about where future energy supplies should come from, it does reduce some of the uncertainty about one type of alternative: utility-scale renewables developed for a regional market.

This study divides the timeline of renewable energy development into two periods: the time covered by state RPS policies as they exist today, and what may be termed “next generation” renewable energy policies. In the West, the last state RPS culminates in 2025, so the analysis uses 2025 as a transition point, as illustrated in Figure ES-1. Next- generation policies may be simple extensions of existing RPS mandates, or innovative tools specifically designed to address new conditions in the electric sector.

Beyond Renewable Portfolio Standards

Read full report (PDF) here: Beyond Renewable Portfolio Standards

About the National Renewable Energy Laboratory (NREL)
www.nrel.gov

“At the National Renewable Energy Laboratory (NREL), we focus on creative answers to today’s energy challenges. From fundamental science and energy analysis to validating new products for the commercial market, NREL researchers are dedicated to transforming the way the world uses energy.  With more than 35 years of successful innovation in energy efficiency and renewable energy, today our discoveries provide sustainable alternatives for powering our homes, businesses, and our transportation system.”

 

 

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