Other Renewable Energy Sources

External links:



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 Energy Department and 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.

In the interim, visit this site for information: 



Hydrogen is a clean fuel that, when consumed in a fuel cell, produces only water. Hydrogen can be produced from a variety of domestic resources, such as natural gas, nuclear power, biomass, and renewable power like solar and wind. These qualities make it an attractive fuel option for transportation and electricity generation applications. It can be used in cars, in houses, for portable power, and in many more applications.

In the interim, visit this site for information: Hydrogen Fuel Basics

Solar Space Heating

  • DOE - Active Solar Heating discontinued

    The helpful information once on the EnergySavers.gov website designed to help American residents save energy in their homes, workplaces, and vehicles is no longer available.  This resource was removed in February 2019.  However the information was rather dated.  The above link now goes to an article about the history of EnergySavers.gov by a commercial organization.  Linked for info only, not as a recommendation. 

  • Space Heating for Commercial Buildings
    From the Florida Solar Energy Center at the University of Central Florida.

  • Space Heating with Active Solar Energy Systems
    From North Carolina State University.

Renewable Energy: An Overview - Solar

Updated December 11, 2013

Arizona is the sunniest state in the nation. It receives more than 4,000 hours of sunshine each year. This makes Arizona an ideal state for making solar energy work.

The modern solar industry, founded in 1974 following the Arab oil embargo of the previous year, experienced tremendous growth from the end of the 1970s through the late 1980s. The mainstay of the solar industry during that timeframe was solar water heating. It is estimated that more than 100,000 solar water heaters were installed in Arizona during the 1970s and 80s.

Today, Arizona ranks second only to California in market share for the burgeoning rooftop solar photovoltaic industry. Although solar electricity is only about one percent of the energy mix in Arizona, analysts predict phenomenal growth for solar power over the next two decades.  Traditional market drivers like favorable public policy (rebates and net metering) and tax credits, are getting a boost from falling prices and growing acceptance of alternative financing mechanisms that allow commercial and residential end-users to lease rooftop solar electric systems. 

And as the solar industry grows, so does its beneficial effect on society, such as greater energy independence, improved environmental enhancements, and positive economic impact on jobs. In 2012, the Solar Energy Industries Association estimated that 9,800 people were employed in the solar energy industry in Arizona and approximately 120,000 full-time, permanent jobs nationwide.

The US Energy Information Administration (EIA) predicts that nationally the photovoltaic (solar electricity) industry will grow by 11.6 percent a year through 2040 and that the solar thermal industry will grow at 3.6 percent annually. 

But, solar energy is more than just equipment.  

Passive solar homes (homes that are designed for natural heating and cooling) are popular in both mountain and desert areas of the state. Some of these homes have adobe, rammed earth, or straw bale as a building material. Others solar homes feature strategies and techniques such as solar porches, greenhouses, solar clearstory windows, trombe walls and solar air heaters.

Whether in rural areas or urban settings, Arizonans throughout the state are proving that solar energy can be used by anybody. Solar energy is not a vision of the future; it is an opportunity for today.

Renewable Energy: An Overview


Renewable energy is the term used to describe energy that comes from sources whose supplies are regenerative and virtually inexhaustible. Among these sources are sunshine,  wind,  water,  vegetation, and the  heat of the earth

Throughout history, these sources have been successfully harnessed and used to provide energy. Almost 2,500 years ago, the Greeks designed their homes to use winter sunlight for heating. Large, south-facing windows were used to collect solar heat, which was stored in massive walls and floors for gradual release throughout the night. The wind has also been used as an energy source for centuries. Some of its early uses include propelling ships and pumping water.

Today's technological advancements have developed more efficient means of harnessing and using renewable energy sources, and these sources are gaining increasing popularity. They offer us alternatives to nonrenewable energy sources such as oil, coal and natural gas which, when burned can cause acid rain and contribute to the overall warming of the Earth known as the "Greenhouse Effect." Existing renewable energy installations are making significant contributions to the US energy supply, and research activities are demonstrating the far-reaching impact that a greater reliance on renewable energy sources could have on our country's energy security. In addition, on-going and planned research offers still more possibilities.