A source from which energy can be derived as an alternative to conventional sources such as fossil fuels.

ऊर्जा का वैकल्पिक स्रोत

English Usage: Solar power is becoming an increasingly popular alternative source of energy.

Hindi Usage: सौर ऊर्जा एक लोकप्रिय वैकल्पिक ऊर्जा स्रोत बनती जा रही है।