What is the best brand/type of solar system for residential photovoltaic?
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There are three brands that I would recommend. For solar panels I recommend the Aten Solar ATPV-42 Solar panels (first link). These are thin-film amorphous silicon panels and are the lowest cost solar panels currently available at $3/watt. That compares the the current average cost in the United States of $4.85/watt. That is a 38% savings on the most expensive component of your system. I am thinking of purchasing a set of these panels myself to add to my system.
I recommend using a grid-tied system and so you will also need a grid-tied inverter. I recommend the SunnyBoy brand. They are german made and of very high quality. I have two on my solar system. Sunnyboy inverters have the highest efficency ratings and are the most affordable available. (second link) They make a variaty of inverters in different sizes to match your system needs.
For mounting I chose the Unirac modular Solar Mounting Rails. They are very easy to use and very sturdy (third link).
These three components make up the heart of you system. You will also need wiring, disconnect switches, fuses or circuit breakers etc. Unless you are an electrician who speciallizes in solar installations I strongly urge you to consult a professional installer to help you design and install your system. I have included an excellent link that can help you to estimate your system cost, size, payback and to find a qualified and reputable installer. Check out "My Solar Estimator" on this page. It is great (fourth link).
There is no one brand or type. Each solar system is composed of numerous components (photovoltaic panels, a converter, batteries, possibly a tracking system - all from different manufacturers). It's a really good idea to find someone in your area with experience as the installation is not all that simple. It will help if you're an electrician, but otherwise you need an experienced installer.
Solar systems are not truly cost effective yet. I often hear estimates that you can expect to spend $20,000 for a solar system, but the reality is quite a lot more. If you spend $20,000, you will have to skimp and be extremely cautious about what appliances you have and what you use. Although this actually raises another question which is whether you plan to tie in to the grid or stand alone as an off-grid system. Because batteries are the most expensive part of a system, you might be able to skip the batteries and tie in to the grid for $20,000. If you want to be off-grid, plan on spending $40,000 and still live conservatively.
At those prices, it will take most of your llife to break even, so cost-effectiveness is not a valid motivation for going solar. However, if you can afford to do it just to be Green, it's a great idea.
depends what you want in a system some common residential photovoltaic are B.P & Suntech.
It is Tata BP Solar electric system
I've recently read about a photovoltaic film for windows that is being used for office buildings. I do not know the implications for residential use though
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