Energy 4 Earth- Home Made Energy Reviews

First generation solar cells began with a large amount of Silicon and only single junctions.
Second Generation solar cells called thin film cells, began with much less Silicon. In addition first generation solar was improved with multiple junctions.
Third Generation Solar Cells aim to keep Silicon use low while enhancing cell efficiencies.
In addition there are technologies that blend electricity generation with heat generation. And also aim to reduce installation and system design costs through building inverters inside solar panels. There is also technologies that use multiple junctions and concentration to enhance efficiencies. And aim to use bio-based plastics to replace petroleum based plastics used as back sheets in solar panels.
Idea’s of the future include thin film concentration solar cells, thin film multi-junction cells, and thin film multi-junction concentrating cels.

The days in outer space are not short enough.
The days in outer space are not long enough.
The solar cells might get wet.
There is not enough concentrated sunlight in outer space to power the cells.

I am very concerned about global warming, and when I grow up (I’m fourteen), I plan on helping to solve the world’s problems by looking into environmental research (college course options would be nice to include in your answers) and I’m wondering currently how much it costs to install solar cells and how long it will take to pay off.

Governments across the globe are frantically trying to put systems in place to help avert the growing environmental crisis the earth faces. But we don’t need to leave it entirely up to the governments to look after the situation, we also can play our part. One of the biggest ways we can contribute is to reduce our dependence on traditional energy resources.

The energy resources we currently use are non-renewable sources, meaning eventually our energy needs will out grow the available resources. These energy sources also give off harmful emissions, when they are extracted, refined and consumed. DIY solar power provides an alternative to these traditional energy sources. By changing the majority of our household energy needs to sources such as solar and wind power we will by default reduce the harmful impact on the environment our current energy consumption inflicts.

If that’s not an attractive enough proposition, DIY solar power also has the benefit of saving the house holder a lot of money. Conventional Solar power installations can be very expensive, with costs running into the thousands of dollars, many home owners are put off the idea as a result. Another benefit of using a non environment impacting resource such as solar is you don’t need to feel guilty about using excess power.

With DIY solar power, you not only gain the benefits of harvesting your own free energy resource you are also saving thousands of dollars on buying and implementing a traditional solar power system.

So lets not leave it up to the governments, lets start helping the environment and save some money in the process.

Dr Jon Elsdon – Solar Energy Consultant

Solar power has many more uses around your home than just solar heating. The technology has made significant advances and you can now cook, heat your pool and even refrigerate your groceries using energy from the sun. However, your solar home may have issues that you may be unaware of. In this article, we’ll talk about the economic and environmental benefits and drawbacks of using solar power.

The biggest benefit of solar energy is that the fuel is free and the source is unlimited. There is little to no maintenance required with solar panels because there are no moving parts. In fact, most manufacturers include warranties on their products that are good for up to twenty-five years. In the event of a blackout, solar power is not affected. That means that during extreme storms, your family can still enjoy all the comforts of your solar home.

Environmentally speaking, the use of solar energy produces no emissions because there is no burning of fossil fuels. Solar energy prices are steadily declining and as new technologies emerge, the costs of solar systems will continue to decrease.

It is a fact that solar power home kits have become more commonplace in recent years, however, these kits can be dangerous. As the instructions in these kits are laid out in what seems to be easy-to-follow steps, some people forget the fact that they are working with electricity. To be on the safe side, purchasers of solar home power kits should read the instructions thoroughly.

It is recommended that you hire a professional installer or electrician instead of installing the kit yourself. Professionals have received more training, so they are much more capable of handling the risks that come with using solar power home kits.

It is also worth bearing in mind that although solar electricity is a clean source of power, eventual disposal of the cells is environmentally unfriendly! It is known that most solar cells that are used to create a solar home contain the highly toxic substance known as cadmium. Extreme care should be taken as it can cause serious environmental damage if it’s not disposed of properly.

The supply of sunlight should also be taken into account as with solar power it is imperative. Generally most places do have adequate light to operate with solar panels, but there are areas in the extreme north and south that experience only darkness for up to a month a year.

While solar power is a huge step forward in reducing our dependency on fossil fuels, there are some drawbacks. Like with any investment, consumers should thoroughly research their options and consult professionals. Solar energy is a rapidly advancing technology, so it’s reasonable to assume that the issue of cadmium contamination will be addressed. It’s important to remember that building a solar home is not just a financial investment, but an investment into the future of a clean planet that will sustain generations to come.

Residential solar energy systems and wind power generators are becoming more popular. More and more people are finding the benefits of generating there own electricity to power there home. There are some situations where you may need both a residential solar energy system and wind power generators. Here we will take a look.

With Solar energy, it can work out good to have in your home, but only if you get a moderate amount of sunlight. This is a similar problem to wind power. Wind power generators are only effective, with a moderate amount of wind.

If you have a lot of sunlight, then a residential solar energy system will be of great benefit, and you will not need to look for alternative sources of energy. Likewise a lot of wind could mean that sticking with a wind power generator may be your best option.

If you find you live in the west of the US, you may have great sunshine, and a residential solar energy system maybe all you need, but what about if you are stuck in a part of the world where blistering sunshine is not a common thing?

In the UK for example, there are summer months with days that are very sunny. Residential solar energy systems are similar to a thermometer. As sunlight is more, and hotter, it means you get more power, less sunlight means less power.

In either case, a deficit will mean you just don’t have power. An option that many homes that switch to wind or solar power decide on is to have a connection to the electric company. This makes a great option, as you can get to have constant electric, and any excess, you maybe able to sell back to the electric company.

If you are in an area that isn’t very sunny or very overcast with clouds, then you may need a wind power generator that can supplement when there is no sun, but a lot of wind. This poses a few extra problems or benefits, however you see it.

Investing in a residential solar energy system is going to be a costly affair. Though the energy you get will be for many years, even decades, it still could mean that you still have to pay for electric, especially if you don’t have the sunshine.

The problem with investing in residential solar energy systems and a wind generator is that you likely have to invest twice the amount of money. This can mean a longer time to make a return on investment.

It is always advisable to seek advice from the company you plan to buy the energy system from, as they can give you an indication of whether you need a residential solar energy system, wind power generator or both.

The benefit with both is that with the excess energy you can, in most cases, sell it back to the electric company. It can be a great feeling, having the electric company send you a paycheck a few times in the year.

Copyright (c) 2008 Steven Magill

Years ago, no one ever thought that solar powered vehicles are even possible. There are solar-powered calculators or solar batteries that can run small devices but as for solar-powered car engines, many have remained skeptical until they finally saw actual vehicles that run on the energy of the sun created for exhibits in various science and technology fairs. These days, many are already considering on the possibility that, in the next couple of years, mass-market solar powered vehicles will be available to consumers in replacement for the ones that run on oil fuel.

These days, one can see solar powered vehicles in engineering demonstrations and solar car race events.

Cost-efficient

Solar-powered vehicles are, without a doubt, more cost-efficient than the typical cars that run on oil fuel. After all, these cars harness energy from something that is abundant ‘ the energy from the sun. So long as the sun shines, these cars should be able to run just as efficiently as any other type of vehicle. Because they run on solar power, these vehicles will also enjoy higher mileage and longer life spans according to most experts. Solar powered vehicles offer a lot of benefits to the potential consumers who would be willing to invest on such cars.

While solar powered vehicles are not yet practical day-to-day transportation devices, it’s only a matter of time before they actually get introduced into the market.

How they work

Solar powered vehicles literally run on the energy coming from the sun. They follow the same idea as that of other solar-powered devices such as calculators or batteries. The surface of the car has solar panels that collect solar energy. Photovoltaic cells installed in the vehicle work to convert this energy into electrical energy that the engine will need to run the car. In theory, solar powered vehicles will only run when the sun is present. However, numerous studies are now being conducted with regards to the creation of energy trapping components that will enable the car to store enough energy for it to run even at night.

Design

The design of solar powered vehicles is largely limited by solar batteries that are installed in it. Most cars that run on the sun’s energy are designed to be lightweight. Every component shouldn’t weigh as much as the ones that you would typically find in conventional cars. They do have practically the same basic parts that traditional vehicles have. You will find brakes and accelerators in them. Some even come with cruise control.

Challenges

With solar powered vehicles, the current challenge is to create a process or a mechanism that is capable of harnessing solar energy efficiently even on places with a relatively smaller surface area such as cars roofs. Solar cells are usually effective on buildings because they are always exposed to the sun’s heat. Cars will warrant more attention on this area to create efficient solar powered vehicles that can be used just like cars that run on oil fuel.

Concentrated Solar Power (or”CSP”) refers to the type of solar energy which is created by concentrating sunlight onto a small area, thus creating intense light and heat, which in turn generates power and electricity. Concentrated Solar Power is one of several alternative energy technologies which have been developed in order to harness the energy emitted by the sun and turn it into useable electricity.

The main difference between concentrated solar power (CSP) energy systems and other solar power systems (such as photovoltaics and solar heating), is that concentrated solar power uses mirrors and reflectors in order to focus concentrated sunlight on a specific location.

How Concentrated Solar Power Systems Work

A simple but accurate comparison to Concentrated Solar Power is the use of a magnifying lens to focus sunlight on a specific area. But the target of a CSP system is to heat fluids, not ants or other luckless insects.

The fluids heated by this concentrated solar energy are then turned into steam. The steam is in turn forced through a fan, and is used to drive a regular steam turbine, which uses its turning motion to generate electricity through electromagnetic means.

One advantage of concentrated solar power is that it is completely compatible with the contemporary power generators which are used in conventional power plants. But in the case of CSP solar energy, the “fuel” used to generate steam is sunlight, not fossil fuels such as oil and coal.

You may be surprised to learn that in the USA, several CSP power plants are already up and running – and that they have performed reliably for the past fifteen years.

At the time of this writing, the least expensive method of using solar power to produce electricity is the to use concentrated solar power systems.

Research and development projects are underway, with the aim of reducing costs even further, so that the cost of producing electricity with solar power can eventually compete with the costs of energy production in modern conventional power plants.

Concentrated Solar Power is one of several methods of generating solar power and alternative energy on a broad scale. Another example of broad scale solar power production is the use of solar power towers. These towers use an assortment of moving mirrors (called heliostats) to continuously reflect sunlight toward a central area at the top of the tower. These heliostats are set up so that they follow the movement of the sun, thus maintaining the strongest reflecting power possible.

Following are some of the basic technical facts about solar energy.

A photovoltaic module or solar panel is made up of about 40 photovoltaic cells. “Photovoltaic module” and “photovoltaic cell” are the “technical terms” for “solar panel” and “solar cell.” When a photovoltaic module is used to charge batteries it is commonly referred to as a “solar battery charger.” Several photovoltaic modules or panels arranged alongside each other are referred to as a “photovoltaic array” or a “solar array.” The usual setup for a system in the home consists of an array consisting of ten to twelve panels or photovoltaic modules. The color of the panels varies, depending on what material is used to make the cells inside the panel. Energy from the sun can be collected by hybrid chargers and used to recharge batteries, or to recharge cell phones and other gadgets directly.

Environmental Facts:

All life on Earth is dependent upon solar energy. In fact, without it, there would be no life at all. Even the lowest life forms on Earth, such as plankton and microbes, need energy in the form of sunlight in order to survive. Solar power is completely environmental friendly, producing absolutely no carbon emissions or other harmful byproducts, whatsoever. It can be used successfully and cost-effectively in just about any location on the planet. You do not need to live in a tropical or desert climate in order to benefit from its use. It has been used successfully in many cold climates, and even in the polar regions. Every area of the United States of America receives enough sunlight to benefit from and make use of solar technology. Currently, the cheapest and most effective way of using solar power in your home is through the use of solar hot water heating systems. In fact, these systems have been commercially available in the United States for over a 100 years. The sun’s energy can be used for heating homes effectively in cold climates, as well as in warm climates. In fact, this form of heating has been in use many cold-climate northern European countries for several decades now. Solar energy technology has advanced far enough that it can be a viable and cost-effective replacement for regular grid-electricity. It is rapidly increasing in popularity – so much so that the demand for solar-powered gadgets is currently greater than the supply.

There is no shortage of energy on Earth and no need to use damaging fossil fuels. It is simply a matter of advancing and utilizing alternative energy technologies for a cleaner future.

Go to one or more local stores that sell electronics equipment. Make a list of all the products you can find that are powered by solar cells. What conclusions can you make about the kinds of products that are made to be solar-powered? What other products do you think could be solar-powered?