Related Clues:
- Geothermal alternative
- — eclipse
- "___ Habits" (self-help bestseller)
- Kind of power using rooftop panels
- __ plexus
- Relating to a bit of physics?
- Like some eco-friendly energy
- Like a system that's revolutionary?
- Warning on some sauce
- With 9-Down, power whose source goes down regularly
- ___ Fireball (spicy candy)