On average, electric bills have increased over 7% each year during the last 20 years. Solar Panels have also come a long way during those twenty years as people search for alternative energy sources.

There are several factors that now play a part in determining the value a solar system has for a home or business. First, you must consider the size solar system that you would need. Just like you need a bigger garage door in your home to handle more cars, the larger your electric bill, the larger the solar system you will need. But, it doesn’t stop there. While that determines the size in kilowatt hours that would you need, it’s not the only factor that determines what the cost will be.

Solar prices have dropped recently for several reasons. First, the prices for the components have come down, and that’s a good thing. Second, there are tax credits and local incentives available that will help you pay for the cost of a system. There is currently a 30% federal tax credit good through the year 2016 that you can claim when you purchase a system. Of course, you need to have a tax liability in that amount or greater to claim it, but most people don’t have a problem meeting that. Other incentives are usually found with the local utility companies. Last year, in Nevada, NV Energy offered unusually large rebates for non-profit organizations and when combined with the federal tax credit – it didn’t cost the organization a penny – it was FREE. For homeowners the utility rebate for solar was quite a bit less. The rebate would cover about 25% of the cost for a solar installation. But, again, when combined with the federal tax credit, about 55% the cost of a system was paid for.

Now, as much as I would love to say that all these rebates are still available, most aren’t. Throughout California and Nevada the rebates were exhausted, quite literally, within hours of opening the application process online. But, don’t worry, there’s good news. Most utilities are gearing up for another round of rebates. When you factor that 55% the cost of solar can be paid for through these incentives, and you factor in the $1500-$2000 a year in electric savings you have, you can see very clearly how solar quickly pays for itself.

The solar panels will be located on the roof and supply power to the five kilowatts needed to power the air-conditioning unit in the car. Toyota also intends to reduce the weight and thus improve the fuel efficiency even more.

This move will make Toyota the first major automaker to install solar panels in one of its car models. And the western automakers hopelessly try to catch up by offering everything besides green innovation.

In Madrid, the capital of Spain, a huge structure called the “Air Tree” is currently under construction. It is designed to both affect the surrounding environment and act as a social gathering point for people.

The “Air Tree” will generate its own electricity using solar photo voltaic cells placed on top of it. The solar panels will generate enough electricity to be able to sell the energy to local energy companies.

Inside the structure trees will be planted to produce oxygen, just like an ordinary tree. Due to this the surrounded areas will get a cooler temperature. It is expected that during summers it will be 8-10 °C cooler inside and nearby the “Air Tree”. More trees will be planted around the structure to enhance the cooling effect.

The “Air Tree” will be built with recycled materials and has been co-financed by the Housing and Land of the City Council of Madrid and by the European Union under the LIFE programme-2002 (ENV/E/000198).

You can find more information, in Spanish, and pictures of the “Air Tree” over at Plataforma Arquitectura.

Here is another clever advertisement. This one is a billboard/solar plant. Yes, you heard right. The billboard has been transformed to a solar plant and generates about 3.4 Kw of electricity during the day. According to Pacific Gas and Electric (PG&E), the owners of the ad, says that is enough electricity for a family of four.

Jennifer Zelwer, Pacific Gas and Electric (PG&E) spokesperson, said that “the energy that is collected by the solar panels actually exceeds the amount used by it on a day-to-day basis.” She proudly (I guess) stated that “this isn’t a billboard. It’s a power plant.”