Ehita ise päikesepaneel http://www.articlesnatch.com/Article/Do-it-yourself-Solar-Panels---Converting-Solar-Energy-To-Electricity-At-Home/848953

Do-it-yourself solar panels produce electricity when a phenomenon known as photovoltaic effect takes place. Whenever photons hit the surface of a specially doped semiconductor, a small potential difference occurs across the electrodes. When several of such semiconductors are put together, they can generate a substantial amount of electricity that can be put to use.

As you may have realized by now, the (semiconductor) material used is largely responsible for the efficiency of energy conversion -- from sunlight to electricity. As scientists discover better semiconductors and better production techniques, photovoltaic cells become cheaper to produce. And as the demand for solar panels increase, economies of scale drives the cost of solar cells to the price we know today.

Recently, many hobbyists are getting interested in building for themselves homemade solar panels. This further reduces the cost of introducing a solar power generator into their house. In fact, most of them are able to gather materials from used and broken solar panels to construct fully working (restored) panels at a tenth of the original cost.

However, before you commit to a do-it-yourself solar panel project, you need to consider what you'll be using it for. Beginners often start with smaller panels that they use to power their garage lights or garden sprinklers. Experienced enthusiasts often attempt to substitute grid power using solar panels. This can be done by using several pieces of homemade solar panels installed on rooftops.

If your aspiration is to build a grid-tied or off-grid system for your home, you'll need to determine the size of your solar energy system needed. Then you'll be able to determine the type and quantity of bat