Author/Creator
- United States148
- Datamonitor (Firm)81
- SpringerLink (Online service)64
- United States. Congress. Senate. Committee on Energy and Natural Resources61
- Bloomberg News (Firm)41
- International Energy Agency40
- ebrary, Inc33
- United States. Congress. Joint Committee on Taxation31
- United States. Congress. Senate. Committee on Energy and Natural Resources, author27
- Organisation for Economic Co-operation and Development22
- United States. Energy Information Administration16
- National Renewable Energy Laboratory (U.S.), issuing body14
- United States. Congress. Senate. Committee on Commerce, Science, and Transportation14
- Project Muse13
- Talus, Kim13
- Barton, Barry, 1953-12
- California Energy Commission12
- Palgrave Connect (Online service)12
- United States. Congress. House. Committee on Energy and Commerce. Subcommittee on Energy, author12
- United States. Congress. Senate. Committee on Governmental Affairs. Permanent Subcommittee on Investigations12