Carmen Reyes 
If you want the most electricity for the least money and your roof is in decent shape, solar panels are the better buy. Solar shingles win on looks and on roofs that need replacing anyway. The difference is simple: panels sit on top of your shingles, while solar shingles replace them and become the roof. … Read more
The cheapest way to make your home more energy efficient is to stop the energy escaping: seal the gaps around doors and windows, set your thermostat to a schedule instead of a constant temperature, and keep the equipment you already own maintained. Those three moves usually cost a small hardware-store outlay and a weekend, and … Read more
A kilowatt-hour (kWh) is the unit your electricity is billed in: the energy used by running a 1,000-watt appliance for one hour. To read your electricity bill and understand kWh charges, take the meter difference, multiply it by the unit rate, then add the fixed charges and taxes until you reach the amount due. That … Read more