How to correctly write "Solar and wind powered" in a sentence? Are hyphens required?
- Solar and wind powered
- Solar- and wind-powered
- Solar and wind-powered
- Solar and windpowered
Hyphens are optional, but if you do use them, use the style of (2), otherwise use spaces as in (1). A hyphen can stand for a common second element in all but the last word of a list, e.g.:
You may see a yield that is two-, three-, or fourfold.