The Alternative Power Resources

There are a few easily recognizable alternative power or energy resources. End-to-end the many years quite a a couple of discoveries have been established and it is only in this current era that people are really harnessing the power of Nature. Even So the transitions that happened in the past have happened quite slowly despite the discovery of alternative energy resources.

Even So having said that; there are many energy companies that are making a conscious effort to bring different energy resources to the fore. Therefore, we can estimate that a world that runs on renewable energy may take a good while to operate.

As you may be conscious there are rather a couple of alternative energy resources that are available at present. Solar energy is one main resource. Still, only a fraction of homes use this method as they build a solar panel, leaving space for improvement in the field. Although solar energy is the way forward, the initial cost involved put many people off.

Another source of energy that would fall under the category of alternative energy resources is wind energy. Once again, the power of Nature in this example has been harnessed to a great degree. Nonetheless, one does feel that there is still quite a lot that can be done to bring this energy to the force. There are still so numerous ways in which wind energy can be utilized but still isn t. As mentioned previously the transition from conventional energy sources to alternative energy resources is a slow process which needs to be looked into at a serious level.

It goes without saying though that hydrogen which is found to be rather abundant is utilized to a great deal. This can be seen as being one of the well-nigh favorable of alternative energy resources. Better yet, there’s much more needing to be done to fuel our needs using alternative energy resources.

Even So, it is great to see that most car makers are in fact reckoning at this from a long term view. This can be seen at this present day which is a great sign when it comes to looking forward for a world that seeks to combat pollution and diminish its reliance on conventional fuel through the usage of alternative power or energy resources.

Solar Power Generation

Prospective users of home solar power systems may find that they have varying requirements in terms of the appropriate number of solar panels for their systems Even a small number of panels will help make a serious dent in your monthly electricity bills. Figuring out the number of solar panels necessary in order to truly go off the grid only takes a few steps.

First, you’ll need to figure out how much electricity you use in your home per day on average. This can be done by referring to your previous monthly electricity bills. (You may be able to look your old bills up online through your utility provider as well.) Look at the monthly kilowatt-hour (kWh) electricity use figures, and find the average monthly total. Your average daily usage can then be found by dividing this figure by 30.

Another important variable pertaining to solar power systems is insolation. Insolation is a measurement of the amount of sunlight which touches a given surface area over time. Solar panels generate electricity when struck directly by sunlight. Every solar panel has its own requirements in terms of minimum sunlight intensity in order to work. In most locations, sunlight exposure varies throughout the year. It even varies just over the course of an average day. The average exposure for a given location is represented in its insolation value. Maps displaying insolation values can be found online. Once you have the insolation value, divide your daily kWh figure by the insolation value to get the amount of power you’ll require from your solar power system.

There’s one more factor to take into consideration. Even with newer systems, there is still a slight power loss during conversion. This can be tough to measure accurately, but it’s usually safe to use the figure of 25%, so if you multiply the figure from the previous step (kWh/insolation) by 1.25, you’ll get the amount of power you need with loss factored in. This final number shows you how many kilowatt hours of power are needed per day, with loss and insolation factored in.

So, to determine how many solar panels you’ll need, divide that last figure by the kWh output of your solar panel of choice.

One of the earliest questions a homeowner faces when choosing on whether to install a home solar power system is, “How many solar panels do I need?” If you need to know the answer to this question, head on to How Many Solar Panels Do I Need?

If you are interested in building your own solar panel, check this step by step by guide Build Solar Panel. A mini course on how to build your own solar power system may also sound interesting to you. Visit Solar Power Calculator to sign-up for a 6 part mini course.

Solar Cell Efficiency

The performance of solar cells has improved greatly since the first modern silicon solar cell was invented. The first silicon solar cell was created by Bell Labs and demonstrated for the public for the first time on April 25, 1954. It had an efficiency of about 6%, meaning that it was able to convert about 6% of the sun’s energy it collected to electricity.

While it might not sound like much, this was actually a major improvement over the previous type of solar cell, the selenium solar cell. Selenium solar cells operated at only about 0.5% efficiency.

Since then, the focus of research has been put toward the task of improving the efficiency of solar cells, and decreasing the cost of manufacturing them. It’s been proven possible, using exotic materials, to build cells with up to 40% efficiency. These materials add a lot to the cost of manufacturing cells as well, though; these high-efficiency cells can cost over 100 times more than ordinary 8% efficient cells to produce. In order to encourage the use of solar power, decreasing production cost might be an even more important goal than improving efficiency.

Under ideal conditions, the sun can deliver about 1,000 watts of power per square meter. A solar cell’s advertised performance is based on this figure. Sunlight intensity can be affected by things like dust, pollution, elevation, and weather. Certain events, like volcanic eruptions, can even reduce sunlight on a worldwide basis for periods of a year or longer. Elevation affects solar cell efficiency in that higher elevation actually leads to greater efficiency. The thinner air present at higher elevation means that the sunlight is more intense.

Currently, multicrystalline solar cells output at about 14-19% efficiency. Although this is significantly more efficient than previous solar cells, this kind of solar cell isn’t thought to be the answer, as it may not be possible to improve it any more than this. Instead, many researchers are pinning their hopes on amorphous silicon cells, which are currently about 8% efficient.

Assuming there aren’t any massive gains in solar cell efficiency in the short term, what would it take to replace all fossil fuel-based energy production in the US with solar power? A little over 10,000 square miles of land would have to be dedicated to solar panels in order to supply all of the electricity currently produced in the US. There is much more unused land than that, and it could easily be used for this objective.

Solar power systems, in order to provide power even when the sun isn’t out, need to also make use of some type of power storage. Many power companies are considering “smart grid” systems involving the use of battery banks to address this problem. Even during the day, when solar panels are generating electricity, batteries can help with the job of meeting especiall high demand, at times when appliances like air conditioners are seeing heavy use.

Since they were first introduced, solar cells have improved dramatically in terms of efficiency, from 0.5% to as high as 40%. Although the efficiency of commercially available solar cells is not likely to improve by much in the short term, solar cell prices continue to fall.

If you will install your own solar power system, you must take into account the kind of roof panel that you are going to use. If you are interested to know more about roof solar panels, go to Roof Solar Panels.

For the finest guides to building your own solar panels, including complete instructions and step-by-step videos, go to Build Solar Panel and GreenDIY Energy Review.