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Author/Creator
- SpringerLink (Online service)408
- National Renewable Energy Laboratory (U.S.), issuing body82
- National Renewable Energy Laboratory (U.S.)21
- United States21
- ebrary, Inc18
- Yang, Qingxin13
- United States. General Accounting Office12
- Library of Congress. Congressional Research Service, issuing body10
- United States. Congress. Senate. Committee on Energy and Natural Resources10
- United States. Congress. Senate. Committee on Finance10
- United States. Rural Utilities Service, issuing body10
- Datamonitor (Firm)8
- United States. Congress. Joint Committee on Taxation, issuing body8
- United States. Department of Energy. Office of Energy Efficiency and Renewable Energy, sponsoring body8
- Cole, Wesley7
- Li, Zewen7
- Luo, An7
- United States. Congress. House. Committee on Energy and Commerce. Subcommittee on Energy and Air Quality7
- Breeze, Paul A.6
- Mai, Trieu6