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There are many different forms in which alternative energy is available. One of these is solar power. Solar power is driven by photovoltaic cells, and these are progressively getting less expensive and more advanced. Solar energy power can be used for electricity, heating, and making hot water. Solar energy produces no pollution, as its input comes completely from the sun’s rays. However, much more work still needs to be done in order for us to economically harness the sun’s energy. For the time being, the resource is a little too conditional—storage batteries are needed to be used as backups in the evenings and on inclement days.

Wind energy has become the most-invested-in (by private investors and governments together) alternative energy source for the time being. The great arrays of triple-bladed windmills are being placed all over as “wind farms”, to capture the motion of the wind and use its kinetic energy for conversion to mechanical or electrical energy.

Of course, there is nothing new about the concept of a windmill for harnessing energy. Modern wind turbines are simply are more advanced variations on the old theme. Of course, the drawback to wind energy is…what do you do when there is a calm, still day? Needless to say, during these times the electric company kicks in for powering your home or office. Wind energy is not altogether independent.

Hydroelectric energy is available as a source of alternative energy, and it can generate a substantial amount of power. Simply put, hydroelectric energy uses the motion of water—its flow in response to gravity, which means downhill—to turn turbines which then generate electrical energy. Needless to say, water is ubiquitous; finding sources for driving hydroelectric turbines is, therefore, not much of a problem.

However, hydroelectricity as a source of alternative energy can be complicated and expensive to produce. Dams are often built in order to be able to control the flow of the water sufficiently to generate the needed power. Building a dam to store and control water’s potential and kinetic energy takes quite a lot of work, and operating one is complex as well,and conservationists grow concerned that it. Of course, a dam is not always needed if one is not trying to supply the electrical needs of a city or other very densely populated area. There are small run-of-river hydroelectric converters which are good for supplying neighborhoods or an individual office or home.

Probably the most underrated and under-appreciated form of alternative energy is geothermal energy, which is simply the naturally-occurring energy produced by the heating of artesian waters that are just below the earth’s crust. This heat is transferred into the water from the earth’s inner molten core. The water is drawn up by various different methods—there are “dry steam” power plants, “flash” power plants, and “binary” power plants for harnessing geothermal energy. The purpose of drawing up the hot water is for the gathering of the steam. The Geysers, approximately 100 miles north of San Francisco, is probably the best-known of all geothermal power fields; it’s an example of a dry stream plant.

In 1979, the developer of a condominium village in New Hampshire decided to bring an environmentally responsive alternative to the market. He designed the building to used solar energy. The solar panels are made of glass, offering a beautify view of the scenery. Buyers responded very well, leading the developer to design several more similar buildings.

Construction will begin in 2007 in Boulder Colorado on a project called Solar Row. The project consists of thirteen homes using only solar power. This will be the first solar home development project in the Boulder area. The design of each home has been carefully set up to allow the home to use and creates its own energy.

Some states are pushing for solar powered housing. California officials are proposing half of all new homes build run on solar energy in within ten years. They are pushing for solar homes to prevent further issues with energy crisis. Three years ago utility customers had difficulty paying their electric bills because of the high cost. Officials plan to give rebates to home builders who agree to install solar panels on new homes. They may offer incentives for installing panels on existing homes as well. Environmental groups are backing California’s proposal as they fill it will encourage other states to follow. It is believed that if many states decide to implement such programs, then the cost of setting up solar power will greatly decrease.

However, many environmental groups aren’t willing to wait around to see what California decides to do. They have taken solar power issues to the legislation. A solar incentive bill has been approved by the Senate. It is still pending with the Assembly Committee. If approved, it would require fifteen percent of new homes being built are complete with solar panels beginning in 2010. The goal would be for the rate to increase each year by ten percent until it reaches fifty five percent.

The building industry opposes the promotion of solar homes. They are against the legislative bill. However, many in the building industry agree that solar homes could lead to economic and atmospheric improvements. The many concern of the building industry is the additional cost to them to meet the solar powered home requirements. If Congress is willing to give them monetary incentives to help reduce these costs, the issue could likely be resolved. It is estimated on average that addition solar power equipment to a home will cost $17,000 to $20,000.