Related Clues:

• Like some panels
• Type of battery
• Alternative power type
• Kind of heat or energy
• Flare type
• Word with panel or plexus
• Like our system
• Kind of heat or flare
• Type of 48 Across
• Like some energy
• Kind of fusion or fission
• Like some heating
• Renewable energy type
• Type of energy
• Alternative to fossil fuels