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Alternative sources of energy – Facts, review and user feedback

With the recent rise in energy costs many people have been looking to alternative sources of energy. One of the greatest energy sources (our sun) is readily available for the taking. We just need to be able to harness it’s power. For those interested, below is a brief history of how solar power came to be.

The history of photovoltaic energy (aka. solar cells) started way back in 1876. William Grylls Adams along with a student of his, Richard Day, discovered that when selenium was exposed to light, it produced electricity. An electricity expert, Werner von Siemens, stated that the discovery was “scientifically of the most far-reaching importance”. The selenium cells were not efficient, but it was proved that light, without heat or moving parts, could be converted into electricity.

In 1953, Calvin Fuller, Gerald Pearson, and Daryl Chapin, discovered the silicon solar cell. This cell actually produced enough electricity and was efficient enough to run small electrical devices. The New York Times stated that this discovery was “the beginning of a new era, leading eventually to the realization of harnessing the almost limitless energy of the sun for the uses of civilization.” The year is 1956, and the first solar cells are available commercially. The cost however is far from the reach of everyday people. At $300 for a 1 watt solar cell, the expense was far beyond anyone’s means. 1956 started showing us the first solar cells used in toys and radios. These novelty items were the first item to have solar cells available to consumers.

.In the late 1950′s and early 1960′s satellites in the USA’s and Soviet’s space program were powered by solar cells and in the late 1960′s solar power was basically the standard for powering space bound satellites.

In the early 1970′s a way to lower to cost of solar cells was discovered. This brought the price down from $100 per watt to around $20 per watt. This research was spearheaded by Exxon. Most off-shore oil rigs used the solar cells to power the waning lights on the top of the rigs. The period from the 1970′s to the 1990′s saw quite a change in the usage of solar cells. They began showing up on railroad crossings, in remote places to power homes, Australia used solar cells in their microwave towers to expand their telecommunication capabilities. Even desert regions saw solar power bring water to the soil where line fed power was not an option!

Today we see solar cells in a wide variety of places. You may see solar powered cars. There is even a solar powered aircraft that has flown higher than any other aircraft with the exception of the Blackbird. With the cost of solar cells well within everyone’s budget, solar power has never looked so tempting.

Recently new technology has given us screen printed solar cells, and a solar fabric that can be used to side a house, even solar shingles that install on our roofs. International markets have opened up and solar panel manufacturers are now playing a key role in the solar power industry.

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The guide to renewable Energy!! – Facts, review and user feedback

Half a lifetime ago, when my wife and I first got a taste for remote RV living, we decided very early on that solar power had to be the way to go. Despite rapid advances in solar technology — even way back then — many fellow travelers were surprised when they learned our RV was “solar powered”.

Granted, that tiny house-on-wheels was getting on in years, and there was still a general belief among caravanners and motorhomers that solar power was “too expensive” and “too technical”. But whatever their reasons, I’m here to tell you that solar-charged 12 volt battery power was then, and still is, worthy of serious consideration — regardless of the size or age of your traveling rig.

In fact, even the most basic system — such as ours was then — provides not only a significant boost in self-sufficiency, it also saves enough money to recover your outlay in under three months. Even today.

For example, a 30-watt, self-regulating solar panel costs around $280 to $350 here in Australia. If you then factor in a no-maintenance, deep-cycle battery of at least 75 amp-hour capacity — to be installed in the RV — at maybe $180, plus suitable cabling, a salable plastic battery box (vented to the outside), and miscellaneous hardware for, say, $50 more, your total outlay shouldn’t be much over $600.

After that, every night you make use of your on-board power, on a “no hook-ups” campsite, you stand to save between $15 and $25 on tourist park fees. Sometimes more. On those figures, the whole set-up pays for itself in maybe 30 nights or less!

True, sufficient power would normally be available from your towing vehicle’s standard battery over one or two nights, but if the vehicle doesn’t move for two or three days the engine will almost certainly need a run for an hour or more to “top up” the charge taken out of the battery. And with single-battery set-ups, there is always a risk of over-using your power, resulting in a flat battery!

On the other hand, if you prefer the overnight security and companionship of a tourist park, an unpowered site — those nice, quiet spots down the back — saves maybe $3 – $8 per night. Which means you could still have your investment back in the bank within six months.

No matter how you look at it, solar was — and is — the way of the future. It’s clean, efficient, silent, and requires almost zero maintenance. And once the initial outlay has been covered, basic power needs from that point on are free.

However, there is a downside. (Isn’t there always?) A fixed solar array — on the RV roof, for instance — needs to be receiving the sun’s rays long and strong to adequately replenish the battery’s charge. Parked too long in the shade, or suffering through a lengthy stretch of rain-filled skies, can knock out a single-battery power supply in two or three days, even with judicious use. For that reason, some travelers have an additional, portable solar panel that can be constantly repositioned to catch the sun’s most direct rays, for as long as possible.

Nevertheless, in the four years we owned that well-traveled little van we had very few problems. (Mind you, we have always carried “conventional” backup in the form of a small petrol generator, and our vehicle has always been dual-battery equipped to share the campsite power needs.)

And about that tricky technology? Well, if a techno-slouch like me can have the whole system installed and operational in under two hours, anybody can! What we did was: (1) mount the solar panel directly onto the RV roof (with sealant carefully applied in and around the screw holes), then (2) run the panel’s cabling down into the van (through the corner of the all-seasons hatch) into a cupboard. Being a self-regulating solar panel, a regulator was not necessary between panel and battery, so the cables were fixed directly onto the battery. The battery was housed in a robust plastic storage bin with a close-fitting lid, which I further sealed with silicone. Two lengths of 6 mm plastic hose vented the box to the outside through the caravan floor (inside the cupboard). Battery terminals were fitted with heavy-duty extension straps that passed through the side of the box to the outside to facilitate normal connection via alligator clips, a portable 12 volt socket, or sometimes a low capacity inverter. All holes in the floor and the battery box were fully sealed (both sides) with silicone sealant.

As for maintenance, all that’s required is an occasional wipe-down of the solar panel, and a general examination of wiring and seals from time to time. I also put a multimeter across the battery terminals every so often to see how it was tracking. (Of course, this reading is only accurate after the battery has “rested” for a half hour or so, i.e, no charge in or out.)

OK, we’ve learned a bit more about solar power since then, so we did some things differently second time around. But these differences were, essentially, because our fulltime travel now needs more than twice the power, with quite a lot more in reserve. So gizmos and gadgets are scattered throughout. But when we think back on that tiny, “drag-it-anywhere” caravan, with its most basic, D.I.Y. solar power set-up, we still get to feeling warm and fuzzy. (Self-sufficiency in the bush will do that!)

For our money, solar power and RVs are made for each other; it’s impossible to imagine a wandering life without either.

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Homemade Solar Panels – Facts & Myths About Homemade Solar Panels

Do you contemplate making Homemade Solar Panels? Today, there are millions of home owners worldwide who are using solar energy to power their home appliances, heating and pumping water. Most of them are increasingly becoming 100% solar dependent, using the solar electricity generated to power their laptops, cookers, microwaves and TV’s and other home appliances. This is a major change in lifestyle that is eco-friendly and brings about lots of savings. Many myths are prevalent about solar power systems for homes that we will talk about today.

Myth 1 – Solar Power Systems for Homes are Too Expensive

Many myths have been doing rounds in the society that solar panels for homes are too expensive to pay for. Well, they are just what they are, myths. Simply make a comparison between a $200 homemade solar panel that works exactly the same way as a $2000-$3000 ready made solar panel bought from market, needless to say which one will you choose! That is just the savings on the initial costs, imagine the savings on monthly electric bills, which will be somewhere in the region of 60%-80%

Myth 2 – Solar Power Systems Can Roll Your Electric Meter Backwards

Using a residential solar power system can literally roll back your electric meter! How? Picture this… While being connected to the power grid, the excess amounts of generated electricity that your system produces will go to back to the electric lines that can be utilized by other homes, thus rolling your meter backwards. Along the way it would be a nice change to get checks from your electric service provider rather than you paying them! Otherwise, the excess electricity can be stored in batteries that can be used by you in future.


Myth 3 – Very Little Literature Is Produced On How to Build Your Own Solar Panels

To be honest it was a mystery till sometime back when solar power systems were dominated by big corporations and government organizations. Now, homemade solar experts are becoming a norm. To begin on the right footing and get a head start, you will need a good guide that shows even the minutest details about the required stuff. A good guide will show the exact steps that you need to follow for making homemade solar panels ranging from the purchase of all the raw materials (which are very much affordable and readily available at local hardware and electrical stores) to putting up a solar power system and have it up and running, generating solar power.

So if you are ready to save on your electricity bills, start looking for a good DIY guide now, set up your solar panel in half the weekend and start saving tons in no time. Try to go for one which has videos included and if they have an online forum where you can chat with other DIY enthusiasts it would be an added bonus.

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