Related by context. Frequent words. (Click for all words.) 86 lightbulbs 72 light bulb 69 bulbs 68 lightbulb 68 incandescent bulbs 67 CFLs 66 compact fluorescent light 60 LED lights 59 incandescent light 57 bulb 56 lamps 55 lights 53 lighting fixtures 53 fluorescent lights 52 solar panels 52 water heaters 52 washing machines 51 electrical appliances 51 toasters 51 LED lighting 50 fridges 50 globes 50 air conditioners 49 household appliances 49 incandescent 48 LEDs 48 light emitting diodes 48 stoves 48 appliances 47 thermostats 47 water heater 46 microwaves 46 kitchen appliances 45 streetlights 45 refrigerators 45 photovoltaic cells 45 dishwashers 44 fluorescent 44 heaters 44 electricity 44 lanterns 43 lighting 43 watt 43 halogen 43 vacuum cleaners 43 wood stoves 43 holiday decorations 43 boilers 42 furnaces 42 LED 42 TVs 42 wattage 42 televisions 42 faucets 42 batteries 42 air conditioner 42 photovoltaic panels 42 thermostat 42 dryers 42 kilowatt hours 42 space heaters 41 torches 41 flush toilets 41 toilet paper 41 smoke detectors 41 Christmas decorations 41 ENERGY STAR 41 lithium batteries 41 install solar panels 40 energy 40 lamp 40 candles 40 toothbrushes 40 skylights 40 kitchen cabinets 40 extension cords 40 dishwasher 40 environmentally friendly 40 watts 40 neon lights 40 windmills 40 transformers 40 insulation 40 plastic bags 40 flashlights 39 unplugging 39 microwave ovens 39 washing machine 39 ovens 39 recycling bins 39 streetlight 39 laundry detergent 39 rechargeable batteries 39 solar 39 fixtures 39 recycle 39 solar powered 39 kilowatts 39 carbon monoxide detectors 38 candy canes 38 kWh