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solar-power × 193photovoltaics × 32
electricity × 24
batteries × 22
electricity-generation × 17
energy × 15
home × 13
wind-power × 12
renewables × 11
solar-thermal × 10
energy-efficiency × 8
diy × 8
off-grid × 8
solar × 5
water × 4
carbon-footprint × 4
economics × 4
energy-storage × 4
water-heating × 3
usa × 3
electric-vehicles × 3
light × 3
uk × 3
recycling × 2
heating × 2