Effects Of Clouds On A Solar Panel

Posted on 27th October 2011 by admin in solar panels for homes

Solar panels hold a wealth of benefits, both for individuals and for the world at large. Economically, solar panels promise to lower the cost of electrical power. Environmentally, solar panels can give us cleaner power, sustainable power that will not require further damage to the environment. Solar power can reach remote areas. It can carry education, or urgently needed medical information.

The effects of clouds on a solar panel, though, might diminish those and other promising benefits.

The effects of clouds on a solar panel might make it far less efficient in certain parts of the world and at certain seasons.

For that reason, people who are considering solar panels for their homes are often heard to ask: will clouds affect my solar panels?

Will Clouds Affect My Solar Panels?

Clouds do affect solar panels. The amount of power your solar panels can produce is directly dependent on the level of light they receive.

In full, bright sunlight, solar panels receive maximum levels of light. During those “peak” sunlight hours, your solar panels will produce power at their maximum capacity.

When clouds cover the sun, light levels are reduced. This does not shut down power production, however. If there is enough light to cast a shadow, in spite of the clouds, your solar panels should operate at about half of their full capacity. Thicker cloud cover will reduce operations further. Eventually, with heavy cloud cover, solar panels will produce very little useful power.

The Good News!

The effects of clouds on a solar panel can be surprising good, however. Incredibly, your solar panels will put out their ultimate amount of peak power during cloudy weather!

As the sun moves into a hole between the clouds, your solar panels will see something wonderful. They will see full direct sunlight “plus” reflected light from the clouds! They will drink in more energy than they could on a cloudless day!

The effects of clouds on a solar panel could then produce peaks at or above 50 percent more than its direct-sun output!

Meeting the Challenge

There are ways to meet the cloud challenge.

1. If you often have clouds in the afternoon, but mornings are clear, aim your solar panels slightly toward the east.

2. Be sure you use a large enough battery system to maximize the amount of power stored for use when the clouds arrive.

3. Make sure your controller has plenty of headroom over the rated panel output power so that it can absorb the surges when the sun reflects off the clouds.

Those tricks and more are practiced in cloudy regions of the world where people have sprinted far ahead of the United States in their use of solar panel energy.

Effects of Clouds on a Solar Panel in Germany

Germany is typically a very cloudy country. Read about the climate of Germany, and you will find that it is “temperate and marine; cool, cloudy, wet winters and summers; occasional warm mountain (foehn) wind” according to Nation Master’s website.

In spite of its cloudy climate, though, Germany is by far the world’s biggest user of solar panels. If you lived in Germany, you could sell back to the main power grid all of the excess electricity produced by your solar panels. Why would I even care in such a cloudy climate? If clouds affect my solar panels too much, I would not worry about selling back to the main grid.

In 2006, Germany opened the largest solar park in the world. Germany also has Europe’s most modern solar housing project - a solar village of 50 solar houses that produce more energy than they use!

Will clouds affect my solar panels? Even if I lived in Germany, the effect would not be enough to forego solar power.

Tip: There are few places that are so consistently cloudy that solar power is out of the question. Improvements are being made constantly, and even solar panels small enough to fold into a briefcase can produce helpful amounts of power.

Anna Hart
http://www.articlesbase.com/computers-articles/effects-of-clouds-on-a-solar-panel-136546.html

Renewable Energy - Lesson 2 - Solar Power

Posted on 24th October 2011 by admin in solar panels for homes

People have been aware that the sun’s energy can be harnessed to power various devices and machines for years, but it is not until recently that the technology and the motivation has pushed people to seriously consider solar energy as a viable power source.

With the current state of the economy and with the growing move toward a more environmentally responsible lifestyle, many people are considering various forms of renewable energy and “green living” principals. Solar power is usually at the top of the list when it comes to renewable energy sources. Solar power has been used for years by the government and various businesses, but it has only recently come into the mainstream for the everyday average household.

In almost any area of the country it is possible to dramatically cut one’s electric bill by installing and maintaining solar panels. Some people are even able to go entirely off the grid and power their homes completely independently of the traditional local electric company, all by solar power. While going off the grid may be an intimidating prospect for some, there is absolutely no reason why a household cannot install solar panels on the roof and greatly reduce the monthly electric bills.

Until recently, the cost to buy and install residential solar panels has been prohibitively high, and not everyone has the technical know how to do it themselves. However, with the shift toward renewable energy, many companies have seen this as an opportunity in an untapped industry and have started offering solar panels at much more competitive and affordable prices. The installation and upkeep of the solar panels is very easy and affordable. Many households find that they can pay for the solar panels in less than a year through the reduced electric bills they produce.

Obviously, once the panels are installed, the solar power is completely free and produces absolutely no harmful emissions, unlike traditional fossil fuels. As the technology becomes more mainstream, manufacturers and builders are constantly refining their techniques to make the solar panels more efficient, durable and innovative.

Recently, some builders have started to integrate solar power into their overall design by including solar panels as standard features on top of garages and in other unobtrusive places such as the roofs of gazebos, tops of pool houses, and on every available foot of roof space in general. Some pool decks are being built with embedded solar cells. As the renewable energy movement continues, more and more builders will find it necessary to integrate a solar power plan into their overall building plan in order to stay competitive with all the other builders who are doing the same.

Solar power is one of the easiest and best solutions to not only help the environment and climate, but to save significant amounts of money in electric bills as well. With solar power components being more affordable now than ever before, every homeowner should at least consider installing solar panels.

David J Hughes
http://www.articlesbase.com/home-improvement-articles/renewable-energy-lesson-2-solar-power-754985.html

How long does it take to install home solar panels?

Posted on 22nd October 2011 by admin in solar panels home

How long would take to install solar panels from start to finish?

Due to design, permits, inspections etc. it took me almost a full month from start to finish, good luck!

Benefits Of Green Solar Energy

Posted on 15th October 2011 by admin in solar panels for homes

To truly understand the benefits of green solar energy, you must first understand how solar energy is harnessed. There are two types of green solar energy-thermal and light. Thermal energy is considered passive solar. This type of green solar energy is harnessed through the design and materials used to construct a building. By integrating south facing windows and materials that retain heat, like brick and stone, you can lower your energy needs and build an energy efficient structure. The thermal energy produced by green solar energy is also used to heat water for solar hot water systems. The rays of the sun also produce light and radiation that can be captured by solar panels to create electricity.

The most popular use of green solar energy is for saving money. Although green solar energy systems can come with a large initial investment, they generally pay for themselves in a few years by providing either supplemental electricity or all of the electricity to your home or business. Building your own solar panels, participating in government refunds and net metering, in which you sell unused electricity back to the power company, can reduce the cost of implementing a green solar energy system. In addition, green solar energy systems require little to no maintenance after installation, as most have no moving parts.

The most important benefit of utilizing green solar energy is completely environmental. With polar ice caps dwindling away and climate changes creating tragic storms world wide, it is increasingly obvious that steps must be taken to decrease global warming and our dependence on fossil fuels. Green solar energy provides a clean energy alternative as it creates little pollution and does not contribute to global warming.

Solar energy panels have become more affordable in recent years making it a viable alternative energy option for savvy home owners looking for savings on their monthly utility bills and the environmentally conscious who also enjoy the financial advantage, but focus more on the benefits solar energy panels have on global warming and independence from fossil fuels.

If you are a beginner to the solar electric world, then you may be wondering what exactly solar energy panels are? It is really simple and yet fascinatingly complicated. Solar energy panels are also known as photovoltaic panels; photovoltaic meaning electricity from the sun. Solar energy panels work by collecting protons from the sun, which displace neutrons, and create a flow of electrons or electricity. An inverter converts the power generated by the solar energy panels from an AC current to a DC current making it usable in homes as a direct electricity supply.

You can use solar energy panels to heat your pool, workshop tools, greenhouse lights and fans or depending on you personal electric usage, your entire home or business. Most solar energy panels are designed to last 30-40 years and require little to no maintenance. Over the life-span of solar energy panels, the energy savings realized by the owner is enough to justify the initial cost of the system and prices are dropping more and more as a larger number of consumers express interest and make the change to solar energy panels or other renewable resources.

Solar energy panels for small applications can be purchased at your local hardware stores. These small versions are ideal for outdoor lighting, small water pumps and other outdoor tools. If you are purchasing a home size or business size system of solar energy panels it would be best to seek out a local retailer of solar energy panels or a green energy retailer in your area. There is also plenty of information available online about different solar energy panel providers.

Corrado Vinci
http://www.articlesbase.com/computers-articles/benefits-of-green-solar-energy-679319.html

Solar Power Technologies on Hold

Posted on 7th October 2011 by admin in solar panels for homes

Two solar power technologies exist, the passive and the active technology. The passive technology are the photocell panels or the photovoltaic film that receives sunlight and generates electricity more apt for a space station or a home. The active technology is a solar thermal that uses a dish to concentrate sunlight that produces steam, which in turn powers a turbine that generates electricity. Another active technology, which is not being promoted, hidden form public view, is using the Stirling Engine to move a power generator.

The passive technology is ready to go, and there are a few homes that have already installed the system. This system is totally clean, backed by the USDOE Solar American Initiative, it requires sufficient space on the roof to position the panels or film, and uses an inverter to turn direct current into alternate current homes can use. The Utility companies have also developed the Net Metering system to buy electricity on their terms, from homes that have generate a surplus of electricity. The new federal tax law “Emergency Economic Stabilization Act of 2008″ effective January 2009 provides a 30% tax credit of the cost of a solar system. Some States are also providing large incentives to install solar systems, although with the current economic crisis these paybacks can be curtailed or delayed. The rest of the payback has to come from real savings generated over time by the system from the Utility company. This passive solar system is expensive as of today, and payback is obtained in 8 years of savings. Photovoltaic film or photocell panels are low efficiency and voltage, and compare badly with the option of buying electricity from the utility company. Currently you require from 13 to 15 photocell panels to generate the 2.5 to 3.0 Kilowatt hours generating capacity.

Walmart has established a pilot plan to install photovoltaic panels in several of their stores. If the system produces a return, they will massively implement it in all their stores, since they have sufficient roof space currently not utilized.

The Solar-thermal system is not adequate for homes and mainly will be used for large Utility companies. However, the active system based on a Stirling engine to power a generator which could be applicable for homes, is not available for massive distribution. Although all of its components have been developed, no one has yet integrated the solar power generating kit, or a home appliance. This home system or appliance should be very low cost because it requires: a solar collector or dish which could cost around $200 USD, a stiriling engine with a cost of $350, the 3 KW per hour power generator with a cost of $350, and the battery bank which is the expensive ticket item and could run several thousand dollars, to store electricity if the system is a stand alone not tied to the power grid. If the home is currently supplied by a utility company, then the battery bank is not needed and the Net Metering system with the public utility company can be used. In addition to the sun collector dish the rest of the system can be packaged in two boxes. One which has the stiriling engine and power generator, and the other with the battery if you are a location not tied to the grid. It can also have a gas heater installation as a backup to when there is a lack of sunlight making this a very reliable alternative.

Apparently, there are companies in America, New Zealand, India, Sweden, and other countries trying to develop the stiriling engine . A few companies are receiving funding from investment funds to develop the stiriling engine for this home appliance. Infinia Corporation, a US company has a head start, because they are currently producing a big sterling engine to power up 10 homes at a time and installing many of them in a centralized solar farm in California. Other companies should not be discouraged because markets are so huge, there will be enough room for all suppliers. Just in United States alone there is a potential of 124 million homes that could use the solar power appliance, plus commercial and industrial sites.

Having the home powering appliance, can be the initial steps for returning to sustainable systems. Today, the sun is light and warmth, provided to us from God and Nature, free for all of us to use and enjoy. A home solar powered generator would provide clean energy, and allow equal footing to all nations rich and poor, to devote their funding into other worthwhile social services such as health and education. Rich nations which have electrical grids and power generation capacity would suddenly feel there would be no need to continue increasing Power generation capacities and hopefully they would discontinue all those plants that contaminate. Please see Poverty generation:  http://www.articlesbase.com/politics-articles/poverty-and-the-new-world-order-809385.html

Juan Trevino
http://www.articlesbase.com/environment-articles/solar-power-technologies-on-hold-673269.html