Related Clues:
- __ clock
- Go ___ (be green, in a way)
- Incredibly small alpha male in charge
- With 44-Down, rooftop array
- Clean energy type
- Going north, some suffer a loss of sun
- Power our newspaper generates?
- Alpha male in charge for minute
- Kind of number in chemistry
- Word before system or power
- Like energy from reactors
- Like many nuclei
- An upper chamber in a large medieval house
- IRS' __ tax credit
- Renewable energy choice