One of the problems with photovoltaic (pv) solar panels is their inefficiency relative to other forms of renewable energy. In a way this is not important because solar energy is free. But solar home energy systems do tend to need a lot of space to produce useful amounts of electric power.  Do it yourself solar power systems are easy to make and install, and the materials don’t cost much. But it would obviously be a good thing if the system could be made smaller, and many solar electric companies, such as Mitsubishi, are rapidly developing residential solar energy systems that will produce pv solar panels with much greater efficiency and at much lower cost.

Costs are likely to be halved every eight years, with improvements in efficiency of 20% to 30% in the same timeframe.

One way to do this is to use a version of the magnifying glass to concentrate a greater density of solar power on the pv cells.  It is called the fresnel effect, which uses optical lenses to beam sunlight on to the PV material.  This has resulted in a reduction in size of as much as one fortieth of a normal cell, and there are even better efficiencies expected.

Some pv solar panels are beginning to use new types of polycrystalline cells which produce nearly 25% more power than present systems.  It is clear that solar power for homes is going to cost less and work better, and not just in sunny climates. Happily, pv solar panels depend on daylight rather than sunlight.  They do work best in hot countries, where daylight levels are good, but they do also work very well in colder climates, for example Canada and the UK.

Quite possibly this sort of thing will be coming to a solar home near you in the next year or so.

On the subject of financial assistance, or the lack of it, by many countries and states, there is now a noticeable determination to be seen in many governments to put the funding of diy home energy systems on a sound footing. The European Union has various directives in force that mandate very significant improvements in renewable energy systems by 2020, and many member states are finally co-operating to achieve these targets. As a consequence, energy produced from photovoltaic sources will rise from its current average of about 1% to perhaps as much as 12% and, to make this happen, so-called feed-in tariffs have been introduced by many countries to encourage investment in commercial and residential alternative energy systems. Versions of this exist already in many US states.

The system shifts the emphasis from grant-based incentives, which seldom pay very much of the total costs, to a legislated price for each unit of energy fed into the national grid. This makes financial planning much easier for investors, and will have a great influence on getting a better home solar power system at lower cost.

We believe that solar home energy is essential for reducing our carbon footprint, and we know that diy solar power is both easy to make and also very rewarding.  Certainly, current developments will yield more efficient pv cells for diy solar panels in the near future, but it is worth remembering that failure to take action immediately will waste yet more of your money in paying those ever-increasing utility bills.  

Building a home solar panel will make a big difference. It is also a good idea to get some professional guidance and to use good quality plans, so we suggest you take a look at an excellent kit, which we believe to be the best presently available. It works very well, doesn’t cost much, and will give you an excellent return very quickly. Take our advice, and you will have no regrets.

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