Under Our Feet: Geothermal Energy

Part 1 of Geothermal Energy Under Our Feet. The Earth houses a vast energy supply in the form of geothermal resources. Domestic resources are equivalent to a 30,000-year energy supply at our current rate for the United States! In fact, geothermal energy is used in all 50 U.S. states today. But geothermal energy has not […]

Today’s Alternative Fuel Choices: Hydrogen

Part 9 of Advanced Technology and Alternative Fuel Vehicles. Hydrogen is a simple, abundant element found in organic matter, notably in the hydrocarbons that make up many of our fuels, such as gasoline, natural gas, methanol, and propane. As an energy carrier like electricity (not an energy source), it must be manufactured. Hydrogen can be […]

Why should you buy a photovoltaic system?

Part 4 of Get Your Power from the Sun. People decide to buy photovoltaic systems for a variety of reasons. Some people want to help preserve the Earth’s finite fossil-fuel resources and reduce air pollution. Others want to invest in an energy-producing improvement to their property. Some people like the security of reducing the amount […]

What is a solar electric or photovoltaic system?

Part 2 of Get Your Power from the Sun. Photovoltaic (PV) systems convert sunlight directly to electricity. They work any time the sun is shining, but more electricity is produced when the sunlight is more intense and strikes the photovoltaic modules directly (as when rays of sunlight are perpendicular to the photovoltaic modules). Unlike solar […]

Criteria for Selection

Part 7 of Selecting a New Water Heater. As with any purchase, balance the pros and cons of the different water heaters in light of your particular needs. There are numerous factors to consider when choosing a new water heater. This publication has already described different system configurations. Some other considerations are capacity, efficiency, and […]