Solar photovoltaic (PV) systems can generate clean, cost-effective power anywhere the sun shines. This video shows how a PV panel converts the energy of the sun into renewable electricity to power homes and businesses.
Concentrating Solar Power
From towers to dishes to linear mirrors to troughs, concentrating solar power (CSP) technologies reflect and collect solar heat to generate electricity. A single CSP plant can generate enough power for about 90,000 homes. This video explains what CSP is, how it works, and how systems like parabolic troughs produce renewable power.
Geothermal Heat Pumps
An energy-efficient heating and cooling alternative, the geothermal heat pump system moves heat from the ground to a building (or from a building to the ground) through a series of flexible pipe "loops" containing water. Explore the benefits Geothermal and the science behind how it all comes together.
Biomass is an organic renewable energy source that includes materials such as agriculture and forest residues, energy crops, and algae. Scientists and engineers at the U.S. Department of Energy and its national laboratories are finding new, more efficient ways to convert biomass into biofuels that can take the place of conventional fuels like gasoline, diesel, and jet fuel.
Watch how biomass is broken down and refined into sustainable biofuels via biochemical and thermochemical processes.
Fuel Cell Technology
Fuel cell technology generates clean electricity from hydrogen to power our buildings and transportation—while emitting nothing but water. This video illustrates the fundamentals of fuel cell technology and its potential to supply our homes, offices, industries, and vehicles with sustainable, reliable energy.
Learn about the benefits of electric vehicles, including improved fuel efficiency, reduced emissions, and lower maintenance costs.
Wind turbines generate clean electricity from the power of the wind. Highlighted are the various parts and mechanisms of a modern wind turbine.
Hydropower captures the kinetic energy of flowing water and turns it into electricity for our homes and businesses.
Marine and Hydrokinetic
Marine and hydrokinetic technologies harness the energy of the ocean's waves, tides, and currents and convert it into electricity to power our homes, buildings and cities.
Algae to Fuel
As America takes steps to improve our energy security, home-grown fuel sources are more important that ever. One of the fuel sources of the future is algae, small aquatic organisms that convert sunlight into energy and store it in the form of oil. Scientists and engineers at the Energy Department and its national laboratories are researching the best strains of algae and developing the most efficient farming practices.
This video shows how oil is extracted from algae and refined into sustainable biofuels.
When you're shopping for light bulbs, compare lumens to be sure you're getting the amount of light, or level of brightness, you want.