Related Clues:
- Is its companion volume 'Mid to ZZZ' minute?
- Energy alternative to wind
- Clean type of energy
- Alternative to wind or geothermal
- Clean energy option
- Take flight, holding line of the sun
- ___ number (periodic table figure)
- Word with panel or system
- __ Fireball: hot candy
- Invisibly small
- Kitten group in a sort of pile
- 'Sunny' lake spotted in upward journey
- Fly high crossing line of the sun
- With 41-Across, a celestial event ... or a hint to four squares in this puzzle
- Chap I included in account that's potentially powerful