Discusses the use of solar power as an alternative energy source, describes how solar cells work to transform solar power into electricity, and explains the environmental advantages to using solar power. Contents: Solar power as an energy resource -- How we use the sun's energy -- Thermal solar power plants -- How solar cells work -- How solar power varies -- Solar cells for different needs -- Solar power plants -- Solar power and pollution -- How efficient is solar power? -- The cost of solar power -- Encouraging solar power use -- New solar technology -- The future for solar power -- Solar activity. Interest Level: 3-6 Reading Level: 7.6 ATOS Book Level: 8.1 AR Interest Level: MG AR Points: 1 AR Quiz: 145672EN.