Assertion: residential solar power | /r/HasProperty | supplemented by traditional electricity
Facets:
value: from the power grid
type: LOCATION
value: usually
type: TEMPORAL
value: to provide additional electricity
type: PURPOSE
Source sentences:
text: Residential solar power usually must be supplemented by traditional electricity from the power grid to provide additional electricity when the solar panels cannot meet energy needs, such as when it is nighttime or extremely cloudy.