Posts Tagged ‘climate change’

How Do Solar Panels Work?

Sunday, December 11th, 2011

If you are looking for greener sources of energy then solar power is one serious option to consider. There are other options such as wind generation and passive heating and hydroelectric generator but for most homes and smaller business solar is one of the most realistic options.

Solar panels and solar power generates power from the sun by converting sunlight to electricity with no moving parts, zero emissions, and no or little maintenance. A solar panel is made up of a series of individual silicon cells that generate electricity from sunlight. As the light hits the surface of the solar panel the light particles produce an electrical current on the surface of small silicon wafers. One single solar cell produces around half a volt of energy.

Some of the smaller solar panels you can buy today produce up to 12 volts of energy. Its these smaller solar panels that contain around 36 solar cells. If you look at large solar panels they will produce up to 24 volts of energy. These larger solar panels will contain around 72 solar cells.

To harness the suns energy solar panels can be stand alone or they can be wired together to create bank or array of panels and increase the amount of energy you can harness. There are big advantages of building this type of solar system, it can produce a higher voltage output so the solar panels can use smaller wiring system to deliver the power from the solar panel to the output device.

Solar panels come in different types. One is a Monocrystalline solar panels. These are most efficient but the most expensive solar panels made. The solar cells use very pure type of silicon and use a complicated growth process for the silicon crystals.

The second type of solar panel to consider is Polycrystalline. Polycrystalline solar panels are also known as Multi-crystalline and are made with Polycrystalline cells. This second type of panel is less expensive but it is not as efficient as Monocrystalline cells. This if a result of the cells are not grown in a large block of many crystals.

The Amorphous solar panel is not made from crystals like other types of panel. These are metal or glass coated with a layer or silicon to create the solar panel. Amorphous solar panels are in the bracket of the cheaper type of panel, as they are less expensive than other types. This type of solar panel is less energy efficiency so more are needed to generate the same amount of energy as more expensive alternatives.

With the world reliant on fossil fuels, solar panels and solar energy are looking like they can be a good investment to help you save money and save energy. Unlike choosing an energy supplier and paying just for the energy you use, there is an initial set up costs which some may find expensive. To help this there are schemes to provide grants and funding. Any solar scheme will have a pay back plan to show that over a period of time solar is a great solution to our energy needs and will help the environment and help reduce your energy bills.

Make the most of the UK governments feed in tariff scheme to generate an income and save energy from solar panel installation.

Is A Solar Electricity System Right For You?

Wednesday, May 18th, 2011

Until about a hundred years ago in the West, people only had recourse to renewable energy for heat and light for their homes. They burnt wood and sometimes coal or peat (OK, fossil fuels) and got up when the sun came up and went to bed with the sun too. In, fact a large proportion of the world’s inhabitants still lives like that.

Things altered with mechanized industry and night shifts. Electricity providers sold the populace on being able to do more instead of just sleeping when it got dark, and the Western population got hooked on buying huge amounts of energy, mostly electricity and engine fuel, which was usually produced from oil and coal.

This idea soon travelled around the world and with rising prosperity came emulation and other countries wanted the same. Now we are in the sad situation where we have to confess that we rode the fossil fuel gravy train to its terminus without thinking about what we would utilize when fossil fuels ran out.

This is where the typical citizen comes in. You have to think about how you want to draw energy in the future. Do you want to be powered by keeping sucking unrenewable resources out of the planet, or do you want to have as little to do with it as you can? Would you rather have everything you have now, but know that the resources that are powering your lifestyle are renewable?

If, like millions of others around the world, you would rather say ‘No!’ to traditional power production methods, then you have to take a stand. But not only in words, you really have to do some something about it physically.

This will mean paying a lot of money up front, which may not be a problem for you or you may even think that taking a stand is worth looking for a bank loan. These are commendable feelings, but I would like to suggest that there is another way to self-sufficiency.

You could make your own!

Why not? The technology has been around for years and is fairly easy. Most moderately capable teenagers can assemble a bank of photovoltaic cells into a solar panel and then plug that into your home’s electrical system. And if a teenager can do it, so can you. All you (and the teenager) will require is a solar panel kit and a schematical diagram. A plan in other words.

A solar panel kit can be bought in your neighbourhood from a Do-It-Yourself shop or from the Internet. A typical solar panel will take a few hours to assemble and will produce 100 watts of electrical energy. The electricity produced from these panels is then passed through an inverter that changes the current from DC to AC, making it usable by household appliances and the utility grid.

Do yourself and the planet a good turn, get off the grid and start saving money and the planet’s resources, you will be surprised how easy it is once you get going. And do not forget, you can do it in stages of, say, one 100 watt panel a month until you hit self-sufficiency. It is not a question of ‘All or Nothing’.

Owen Jones, the writer of this piece, writes on many topics, but is currently involved with a favourite topic, types of renewable energy. If you are interested in Sustainable Energy At Home, please click through to our site.

There Is Life Off The Grid

Friday, April 29th, 2011

You can live off the grid. You only have to have the grid to purchase electricity if you cannot generate your own. Living on the grid has made too many of us lose our self-sufficiency. We slavishly buy energy off the big suppliers and pay through the nose for it at the end of the month.

How many days a month do you have to work just to pay your electricity bill? What could you do with that time or money if you did not have to use it to pay for your electricity?

The fact is that you can come off the grid and you can even sell your surplus, home-made electricity back to the grid. This is not likely to make you a lot of money, but it is a nice feeling after only paying out for decades. However, the savings of life off the grid do not stop there. There are environmental savings and the saving of human life too.

Soldiers would not be sent to fight for oil if we were not so reliant on it. The fact is, that if more people came off the grid, the price of oil would fall, because demand would go down and the oil-producing countries that think they have a strong hold on the West would lose their power. And that can not be a bad thing either, can it?

It is easiest for people who live in their own houses to come off the grid. They have more control over their own property and can make their own decisions about what to do with it. Drill a hole here, cut a hole there – that sort of thing. Alterations or home improvements. Life off the grid is also most advantageous for families as they use the most electricity.

The most common techniques of attaining a life off the grid is by the use of solar panels, hydropower and wind turbines or even good, old-fashioned wind mills. These devices are still expensive to buy and very expensive to have installed. A recent study in the UK estimated that it would take 10 years to recover the investment of a professional installation of energy-making devices.

However, you could remove the expensive labour element by making and installing the units yourself! This opportunity is accessible to anyone in the world as the diagrams and plans for making these units are available on the Internet from specialist alternative energy web sites and the components are practically every day items.

You will be able to get them in a hobbyist or DIY store. They are also very easy to put together – most teenagers could do it and so could you. If you do not like that way, you could buy a self-assembly kit.

Once you have started to become free of the grid, you can make life off the grid even more satisfying by renewing your appliances, as and when needed, with low energy models. If you tackle life off the grid wisely, you could add new energy producing units every month until you do not get any electricity bills any more and then whatever additional savings you can make will be sold back into the grid.

Owen Jones, the author of this piece, writes on many topics, but is currently involved with a favourite subject, renewable energy advantages. If you are interested in Sustainable Energy At Home, please click through to our site.

Global Warming Quicker Than Forecast

Saturday, September 5th, 2009

An increasingly large amount of scientific research, published since the IPCC 4th Assessment Report was released in 2007, shows that climate change is occurring right now, and that it is much faster than predicted only two years ago.

The evidence for this statement comes from many areas. The most important ecosystems currently undergoing change include:

-Many physical systems, in widespread sites, are already showing evidence of global warming. Examples include the timing of plant flowering, animal breeding, and lake thawing.

-Higher ocean surface temperatures in Pacific & Atlantic hurricane-formation zones leading to stronger cyclones are definitely related to anthropogenic warming.

-Ocean acidification is occurring quickly, due to CO2 in massive amounts dissolving in salty water. This will have major impacts on marine ecosystems and subsequently food supplies for many countries.

-Probable sea-level rise over the next 100 years will be higher than that calculated in 2007. It will probably increase at least 100cm, based on newly released scientific studies.

-The increased melting of the Greenland ice sheet which began in the summer of 2004 has been definitely related to global warming.

-West Antarctica has melted at an accelerated rate since 1999 and has suffered 10 major ice shelf collapses since then. After an ice shelf collapses there is a rapid and marked acceleration of glacial flows, contributing to sea level increases.

-Sea-ice in the Arctic is disappearing much quicker than previously estimated, and it is almost a given that this area will be ice-free in summer within a few decades.

-Thawing of the boreal permafrost is proceeding much faster than previously calculated, and is expelling a lot more greenhouse gases than expected.

The warming that is now taking place is expected to go on for many centuries, after all human-sourced CO2 escape ceases. This is due to the significant delays that exist in the climate-ocean system, as well as the long half-life of atmospheric carbon dioxide.

Read more at the planet’s greatest climate change blog, or learn more about accelerated sea level rise.