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The report argues that the United States can significantly reduce its reliance on fossil fuels by deploying a diverse mix of renewable energy sources, which have the technical potential to meet current electricity needs many times over. It highlights wind, solar, geothermal, bioenergy, and hydropower as key resources, noting that wind and geothermal are already competitive with new coal and natural gas plants in some cases. The document identifies critical barriers to this transition, including the need for a modernized transmission grid, streamlined siting processes, and sustainable biomass harvesting. It proposes a policy package featuring a national renewable electricity standard (RES) ramping up to 40% by 2030, extended tax credits, and increased R&D funding. While discussing carbon capture and storage (CCS) and advanced nuclear power as potential low-carbon supplements, the report notes significant cost uncertainties, infrastructure requirements, and safety risks associated with these technologies.

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  • The U.S. electricity sector was a major driver of emissions, with power plants responsible for over 40 percent of U.S. carbon dioxide emissions in 2007, and coal-burning plants alone accounting for about one-third of the national total.
  • Renewable energy technologies—specifically wind, solar, geothermal, bioenergy, and hydropower—possess the technical capacity to generate more than 16 times the current electricity requirements of the United States.
  • Wind power is a rapidly expanding resource; by March 2009, the U.S. had over 28,000 megawatts of capacity across 36 states, with Texas and Iowa as the national leaders.
  • Solar energy potential in the U.S. is vast, with concentrating solar power (CSP) alone potentially generating 7,000 gigawatts in the Southwest, which is roughly 10 times the current national generating capacity.
  • Geothermal energy offers significant potential, particularly through enhanced geothermal systems (EGS), which could provide between 345,100 and 727,900 megawatts of capacity, potentially meeting nearly all current U.S. electricity needs.
  • The transition to renewables can provide economic benefits, as renewable energy expenditures are more labor-intensive than fossil fuel mining and transport; for instance, the U.S. wind industry added 35,000 jobs in 2008.
  • A primary obstacle to renewable deployment is the fragmented jurisdiction of the transmission grid, which allows individual states to veto multistate lines, necessitating a new federal siting authority.
  • Carbon capture and storage (CCS) is viewed as a potential but uncertain tool; while it could capture 85–95 percent of a coal plant's emissions, it requires massive new infrastructure and faces risks of CO2 leakage.
  • Advanced nuclear power is unlikely to contribute significantly to emission reductions before 2030 due to extreme construction cost escalations and a lack of recent U.S. experience in building plants.
  • The proposed 'Blueprint' policy framework includes a national renewable electricity standard (RES) that would increase the share of renewable energy to 40 percent of remaining electricity demand by 2030.

Cite the original document

APA
Union of Concerned Scientists (n.d.). Climate 2030. https://www.ucs.org/sites/default/files/2019-09/climate-2030-roadmap-chapter-5.pdf
Chicago
Union of Concerned Scientists. Climate 2030. n.d. https://www.ucs.org/sites/default/files/2019-09/climate-2030-roadmap-chapter-5.pdf.
Wikipedia
{{cite report |author=Union of Concerned Scientists |title=Climate 2030 |url=https://www.ucs.org/sites/default/files/2019-09/climate-2030-roadmap-chapter-5.pdf |access-date=23 October 2026 |via=Climate Insights Directory}}
BibTeX
@techreport{unionofconcernedscientistsndclimate, author = {{Union of Concerned Scientists}}, title = {{Climate 2030}}, institution = {Union of Concerned Scientists}, url = {https://www.ucs.org/sites/default/files/2019-09/climate-2030-roadmap-chapter-5.pdf}, urldate = {2026-10-23}, note = {Indexed by Climate Insights Directory} }

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