Ask your solar panel vendor about the certifications they have and about the testing of the panels you are interested in. You might qualified for some rebates offered by the government if you go through a certified vendor and choose panels that have received certifications too. Besides, this is a good way to make sure you are getting a quality product.
When you can't afford a full system, instead start with a solar water heating system. Water heaters make up a large portion of the energy that a home consumes during the year. Your costs are going to be lower upon installation of your solar water heating system.
In this video, I show you how to hook up a cheap solar panel to the batteries in an RV to trickle charge them.
When switching over to solar panel, take the time to evaluate all of your energy needs. Solar panels are far from cheap, and there might be more cost effective ways that you can reduce energy consumption in your home. By reducing consumption, you can reduce how many panels you need, thereby reducing your overall purchase and install costs for a solar system.
Always use non abrasive cleansers on your solar panels. An abrasive cleaner can scratch the surface of the panel and cause permanent damage and affect how well the solar panel works. There are commercial cleaning solutions to use or you can use a pool skimmer with a very soft cloth on it.