1. not relating to or derived from the sun

Examples

• The company invested in nonsolar renewable energy sources like wind and hydroelectric power.
• Nonsolar heating systems include geothermal and biomass options.
• The research focused on nonsolar methods of generating electricity.
• Many nonsolar energy technologies are becoming more cost-effective.
• The building uses both solar and nonsolar sustainable energy solutions.
• Nonsolar radiation from distant stars is much weaker than sunlight.