Romance Languages:
* Spanish: solar
* Portuguese: solar
* French: solaire
* Italian: solare
* Romanian: solar
Germanic Languages:
* German: solar
* Dutch: solair
* Swedish: sol
* Danish: sol
* Norwegian: sol
Slavic Languages:
* Russian: солнечный (solnechny)
* Polish: słoneczny
* Czech: sluneční
* Ukrainian: сонячний (sonyachny)
* Serbian: соларан (solaran)
Other Languages:
* Chinese: 太阳能 (tàiyángnéng)
* Japanese: 太陽光発電 (taiyō kō hatsuden)
* Korean: 태양열 (taeyangyeol)
* Arabic: شمسية (shamsiyyah)
* Hindi: सौर (saur)
* Turkish: güneş enerjisi (güneş enerjisi)
Note: In many languages, "solar" can also be used as an adjective, meaning "relating to the sun."