The Energy Information Administration (EIA) of the US Department of Energy maintains the Energy Glossary Web site. The glossary provides energy terms and definitions as used in EIA reports, on EIA survey forms, and by the energy industry. Users browse the terms and acronyms alphabetically to locate the specific word they're interested in. Examples of these include Adjusted Electricity,...

The California Energy Commission's Web site contains a great resource entitled the Glossary of Energy Terms. If you're interested in energy topics or happen to come across an unfamiliar term, this tool will be of great use. Simply choose the letter of the term and hope that it's included -- for example, DAYLIGHTING, which is defined as "The use of sunlight to supplement or replace electric...