Working together to ensure reliable, affordable and clean energy
Glossary
The following definitions reflect those used by the International Energy Agency (IEA); definitions used by other organisations and publications may vary.
R&D
research and development
RD&D
research, development and demonstration
RDD&D
research, development, demonstration and deployment
RE
renewable energy (renewables)
RECaBS
renewable energy costs and benefits for society
REP
rural electrification policy (India)
RES
renewable energy sources
RET(s)
renewable energy technology(ies)
ROW
rest of the world
RPK
revenue passenger kilometers
renewable energy
energy that is derived from natural processes (e.g. sunlight and wind) that are replenished at a higher rate than they are consumed. Solar, wind, geothermal, hydro, and biomass are common sources of renewable energy.