Posts Tagged ‘solar panels’

Review Of Solar Power Technologies

Wednesday, March 2nd, 2011

Solar polar is the conversion of electricity into sunlight. The way the energy is captured and converted depends on the scale. Large commercial electricity generators may use CSP (Concentrated Solar Power) systems, based on lenses, mirrors and tracking systems, while smaller installation will often use photovoltaic cells. Since solar power cannot be produced in the absence of sunlight, some type of energy storage is needed if electricity is to be used at night time.

CSP systems are used in the largest installations which produce electricity from sunlight. California’s Mojave Desert is home to the largest solar energy plant. It produces more than 350 mega watts. Other large CSP plants are found in Spain. As you can see, locations that get a lot of sunlight year round are ideal for this type of energy production.

CSP systems concentrate sunlight into a small beam using lenses and/or mirrors. The mirrors or lenses move throughout the day, tracking the sun. They concentrate the reflected sunlight into a small point and use it to heat up a fluid. This generates electricity in a way similar to the method used by conventional plants.

Several international organizations have studied many forms of renewable energy. They have determined that CSP has the potential to provide twenty-five percent of the world’s electricity needs by 2050. Spain is currently leading the world in CSP technologies. Desert areas, like those in Spain, Mexico, Africa and many states in the south-western U.S. make ideal locations for CSP plants.

The other type of solar power being practically used in the world today uses photovoltaic technologies. PV cells are semiconductor devices that are able to be contained in a fairly small panel. They produce a relatively small amount of DC electricity when sunlight is absorbed into the panel. Because of the manageable size of the panels, these systems are scalable. In order to produce sufficient electricity, several panels are installed together.

Most installations are small, supplying electricity to single homes, or to small off-grid applications such as traffic signs. Nevertheless photovoltaics can be used in large installations such as the 97 MW Sarnier power plant in Canada.

Systems which produce energy from the sun clearly cannot work at night time, and in common with some other green energy sources (tidal and wind power) some form of energy storage is required. For a large plants, such as the demonstration energy park in Germany, pumped storage hydroelectricity may be used. Solar energy is converted to electricity during daylight hours. It’s used to pump water into a raised reservoir. During the night that water can be used to produce hydroelectricity.

Because of the cost of the batteries to store electricity, many residential PV systems are simply connected to the grid. During daylight hours, the homes use solar energy produced by the PV cells. During night and on cloudy days, electricity is purchased from the power company. The grid can also be used as a form of energy storage, because it is possible for consumers to feed power back into the grid, provided that is permitted by local electricity companies.

In many countries tariffs and subsidies make it economically sensible for homeowners to feed power back into the grid. Residential PV installations include an inverter, which is an electronic unit that converts the DC voltage produced by the PV cells into AC which can be used by the home and fed back into the grid. Several countries, including Korea, Spain, France, the United States and Germany have seen the solar panel market grow significantly, partly due to favorable tax incentives and subsidies.

If you want to get involved in the trend toward solar energy, just run down to your local Home Depot to find solar panels for sale. Read up on solar panel maintenance to keep them operating at their peak performance. Solar Power by Coleen Regis.

Alternative Energy Subsidies Accelerate Move To Grid Parity

Wednesday, March 2nd, 2011

Subsidies are financial incentives, usually paid by governments to encourage the production of something. There are many reasons that a particular product might be beneficial to the community, but not economically feasible to individuals and businesses. Many products are subsidized to support local businesses, reduce the amount of imported goods, provide employment and encourage environmentally friendly practices. The energy industries (coal, oil, nuclear, alternative) have always worked in an environment where subsidies have been used. In recent years the trend is to encourage renewable energy sources (such as solar, wind, biomass) at the expense of fossil fuels such as coal and oil. Feed-in tariffs and financial and tax incentives for photovoltaics are examples of alternative energy subsidies.

Each country’s goals may be different, so naturally they use subsidies differently to move toward their objectives. One common goal is to encourage people to use a fuel source that can be produced locally, thus promoting employment in their own country and reducing dependence on fuel from foreign countries. They may use subsidies on production rather than consumption of a locally produced fuel in order to increase the export of that product.

Governments may also see subsidies as producing economic benefits for their people, maintaining employment, reducing prices etc. International agreements, such as the Kyoto Protocol on reducing carbon emissions, can also lead to tariffs which discourage certain forms of energy, and encourage others.

Those who oppose subsidies will often use arguments that they distort the free operation of the marketplace, they do not necessarily benefit the people (e. G. The poor in underdeveloped countries) they were supposed to help, and, in the case of energy subsidies, they encourage increased consumption and waste.

Policies for promoting the production and use of renewable forms of energy are common to many nations. A major driver is the need to meet international obligations such as those agreed by the Kyoto Protocol on reducing carbon emissions.

Many fuels that we use now because they’re less expensive than their cleaner counterparts release carbon dioxide into the air. The carbon dioxide contributes to a natural effect in the earth’s atmosphere, called the green house effect, causing the earth to warm. A main aim of policy in many countries, is to reduce the use of fossil fuels, and to encourage sustainable and renewable energy, using alternative, carbon-neutral sources, such as biomass fuels, solar power, wind power, tidal power, hydro-electricity and (more controversially) nuclear power. You can see the effect of subsidies on the prices of solar panels for sale in the U.S.

Alternative energy subsidies support those policies. Feed-in tariffs and tax incentives for photovoltaics make it financially attractive for consumers to buy and use environmentally friendly solar panels. The goal of these subsidies and incentives is to help reach grid parity, which is the point at which the cost of renewable power is equal to the cost of traditional forms of energy.

When a government pays the producer of renewable energy for each unit of power the produce, that’s called a feed-in tariff. National electricity grids are conventionally considered as a network of suppliers (power stations) connected to a network of consumers (homes and businesses), but it is in fact technically possible for any consumer to feed power back in to the grid.

When solar panels are purchased and used by a private individual or business, they may generate more electricity than the home or business need, especially at certain times of the day or year. Feed-in tariffs allow the owner to feed that electricity back into the grid. The electricity company is obliged to buy that power, sometimes at a rate which is quite favorable to the home owner. This encourages owners of homes and businesses to invest in solar panels and produce renewable energy, thus reducing their negative impact on the environment.

Find out what incentives are available for solar power in your area and then research solar panel prices. Solar Power Subsidies by Coleen Regis.

Alternative Energies of the Future

Wednesday, February 16th, 2011

As traditional energy resources become more scare and more expensive, many are becoming interested in alternative energy sources. This is understandable, as these developing technologies have the potential to revolutionize may aspects of our daily lives. Read on for a brief overview of some of the more promising technologies.

There are many benefits to things of this nature. Some of these options offer energy without pollution. Energy can be produced and used without creating harmful waste products that harm the environment. This would allow much more liberal, and safe, use of a particular piece of technology.

Another important benefit is that many new technologies tap into what is known as renewable resources. This means that we can continue to produce energy with these technologies with no foreseeable end in sight because the source is always there. This is a much better idea than using resources like oil or coal that will eventually be depleted.

One of the most promising sources of renewable energy is wind power. The technology utilizes wind to turn the blades of wind turbines. As the blades are turned, the kinetic energy is coverted into an electrical current, then transmitted or stored for later use. This whole process takes place with no chemical reactions, so it produces no pollution to harm the environment. Wind turbines are compatible with farms for land use. They can even be built offshore to take advantage of the wind there.

Another great alternative, which has recently become cost effective enough for residential use, is solar power. The energy from the sun’s rays can be used for a variety of tasks, such as producing electricity, heating water, cooking, and removing salt from sea water. Since the sun will shine every day, solar power will never run out, making this a very practical source of energy. Cloudy days and a lack of the sun at night do have the potential to limit its usefulness. You can find solar panels for sale at your local Home Depot or Costco.

Hydro electric power is gaining a lot of attention and study in recent years. This utilizes dammed water to push a water turbine and power a generator, creating electricity. This can create electricity as needed, because you can control the release of the water. Other methods of harnessing kinetic energy from water must take place when the water moves. There are no harmful waste products from this type of power generation, and the water is still available for other uses.

Geothermal power is a lesser-known potential resource, but it is very exciting in it’s development. This technology aims to harness the power in the heat just below the earth’s crust. Geothermal power plants are typically small and have little effect on the landscape. They are also relatively self-sufficient in nature.

With so many worries about our future sources of power, alternative energy sources are quickly gaining in popularity. Research is developing at a rapid pace. There are many benefits and very few drawbacks when compared to traditional energy sources.

At the same time, we need to improve our energy conservation efforts.

Take Care of Your Solar Panels

Wednesday, February 16th, 2011

Solar panels are designed to capture the sun’s light and convert it into electricity. Each panel has many solar cells. The panels are linked up to each other to form a whole system. They’re usually installed onto the roofs and tops of homes and buildings in groups of three or four. To ensure your panels are able to function properly and provide adequate power, make sure that they are properly maintained.

The good news is that these systems do not need much upkeep. The only breakable part is the glass on the solar panels. The only component that has any moving parts at all is the heating pump. That said, you will still have to regularly maintain them.

Inspecting your solar panels periodically is the first step. Dirt and other pieces of debris will have to be removed to prevent damage. Look at the owner’s manual supplied by the manufacturer to see how often you should check them. If there’s a reason to check them more frequently – a nearby tree for example – take that into consideration. Check them more frequently if you live in a dusty area. Generally, if you check them and they’re very dirty, you should check them more frequently. If it helps, create a schedule or mark your calendar to keep track of the device’s maintenance.

In order to remove an accumulation of grime and dirt particles from the panels, scrub gently from time to time. Soap and warm water can loosen the dirt. Wipe it away with a clean soft cloth to avoid scratching the glass. Bird droppings are commonly found on solar panels, since they’re usually located on roofs. You’ll need to completely remove them to maximize the amount of sunlight that gets through to the solar panels. One you’ve removed the dirt, cool down the panels with room temperature water before drying. This will prevent streaks and water spots.

It’s far too much of a hassle to uninstall the panels during their cleanings. You will have to use a ladder and some safety gear to climb up to them. Take every safety precaution as you inspect and clean the panels to avoid the accidents that frequently occur when climbing on roofs and using ladders.

A solar panel must be completely clean in order for it to function properly. A dirty panel could mean that you get little or no use out of it. So cleaning them is an extremely important act, rather than a cosmetic one.

If you are unwilling or unable to ascend to your home’s roof, you have a few more options. There is a tool available that allows a homeowner to effectively clean their solar devices from the comfort and safety of the ground. The long metal pole is able to powerfully spray a steady stream of water much like the devices used at self serve car washes. Most of the devices can be hooked up the home’s front or backyard water faucet.

You could also consider hiring professional solar panel cleaners. These workers are experts and safely inspecting rooftop panels and have the tools and know how to keep them working properly. Look in the phone book or online for local businesses that offer this service. Or ask the contractor that installed your system. Shop around and get prices from a few different companies. There’s a wide range in pricing.

This is a great time to go solar. You can find solar panels for sale everywhere, even your local Home Depot. Learn how fused quartz semiconductor technology has improved modern solar panels.

The UK Climate and Solar Panels

Sunday, November 28th, 2010

There is a popular misconception that our unpredictable weather makes it impossible for solar power to work in this country, but this is inaccurate. In fact, solar power is a completely viable source of energy in the UK, just as it is in other sunnier climates.

The UK climate is a varied one, with weather ranging from blistering summer heat to ice-cold winter days. But actually, our unpredictable yet lovable United Kingdom gets 65% of the radiation experienced on the equator! Not bad when we consider the equator is the hottest place on Earth. Luckily, the UK is close enough to the equator to have the right angle in which to best harness the sun’s rays. Meaning, in the UK, solar photovoltaic (or PV) panels can collect and convert enough solar rays to power in average sized 3-bedroom house.

Many people falsely believe that in order for solar panels to work, they need a constant source of sunlight. But actually solar panels can still produce some electricity on our cloudy British days. Homes can also store solar generated power with special batteries, helping us to save it for a cloudy day. But should we find we end up with more electricity than we need, it can even be sold back to the grid via the Feed in Tariff; a governmental initiative designed to encourage UK residents to invest in solar power..

When we consider the rate in which the world’s fossil fuels are being consumed, it is really important that we all start thinking ahead, and especially about renewable energy. Solar PV panels are popular and growing choice for those wishing to go green. They work by simply converting the sun’s natural radiation into electricity which is used to power the home, and because it is a pollution-free source of energy, they can help reduce the need for other electrical sources by up to 90%.

Providing not just Mother Nature with energy, solar power can provide your family home with energy too. By choosing solar PV panels, you can reduce your carbon footprint now, and therefore help preserve the planet for the future generations to come.

Find out more about home solar panels, or free solar panels for homes and businesses

UK Government SOlar Incentives

Friday, September 24th, 2010

There are a number of government incentives on offer to get more people using solar power in an age where there are binding EU targets to stick to. By 2020 all member states must be using 15% of all energy from renewable sources to help reduce the effects of global warming. Currently the amount of UK renewable power only accounts for 1% of its energy mix.

The Renewable Heat Incentive (RHI) will be implemented in April next year by the Department of Energy and Climate Change. The initiative has been put in place to encourage more people to use sources like the sun, air and water for their power supply. Under the scheme you will be paid for the energy that you use but will also make savings on your bills.

The initiative is open to anyone in England, Scotland or Wales, be they a business or individual. To qualify for the scheme your solar equipment must have been fitted after July 15th 2009. Those who take part in the RHI from the beginning are expected to most benefit with the expected fall in price of PV panels. Even if the energy isn’t used the government will still pay you up to 18p for every kilowatt hour (kWh) of power generated.

Feed-in tariffs, which have been on offer from April this year, are for households which pay for energy collected through solar or wind power. Individuals can receive up to 36p/kWh but this can rise by 5p if the power is sent back to the national grid, when the home owner is on holiday for example. The levies are worth an average of 900 per year and are free from Income Tax which will save families paying basic rate 180 a year.

However, installing solar panels is still a very costly process with some fittings being almost 10,000. But the payback time is expected to fall by almost half a decade to ten years.

The UK Government’s inventives are sure to encourage the installation of more solar pv panels in Britain.

The British Feed In Tariff

Monday, August 23rd, 2010

Energy prices have risen drastically over the last few years, and are predicted to rise even higher over the next decade. Alongside this people are increasingly searching for an alternative to nuclear power, so they can power their homes in a more environmentally friendly way.

If you want to reduce your CO2 emissions, then solar PV panels can offer a realistic alternative to nuclear power to power your home or office. Due to the huge reduction in energy bills, having solar power already installed in your home can add 1% to the selling price of your home.

So what are the financial benefits of using solar power? Installation and purchasing are the only costs you’ll incur to set up your solar power source. The panels themselves require very little upkeep. They can reduce your energy bills by a huge amount, by allowing you to generate your own power by harnessing the suns light and radiation.

There are even more financial benefits to using solar power, thanks to a new tariff introduced in April 2010. Called the UK Feed-In Tariff, it offers solar users across England, Scotland and Wales the chance to earn cash back. Basically, you will be paid for all of the energy you produce through your solar PV panels, whether you use it all for your own needs or not. And since solar power is more expensive to generate than nuclear power, you will be paid at a higher rate than the utility companies.

If you sell your unused energy back to the national grid you will receive 44.3p for every unit, and for the energy you use yourself you can expect to receive 41.3p. Investing in solar power is very worthwhile. It can allow you to reduce your running costs, reduce your CO2 emissions, and make money, regardless of whether you use all of your energy or not.

Find out more about the UK feed in tariff rates