Price per watt is the primary unit of measurement for the solar energy. Watt Peak (Wp) is the direct current watts output of a solar module as measured under an Industry standardized Light Test before the Solar Module leaves the manufacturers facility.
Solar prices have decreased from $27 per Watt Peak (Wp) and heading lower. Many project a $1 per Wp competitive price model in the near future. When $1 Wp is achieved, grid parity will allow Photovoltaics (PV) to compete with the prevailing price of electricity.
Essentially, there are 2 types of solar panels. The more expensive kind using crystalline silicon and the new proprietary thin-film technology. CdTe (Cadmium Telluride) is the popular favorite thin-film technology favorite.
The National Renewable Energy Laboratory in Golden, Colorado to recognize CdTe’s (Cadmium Telluride) potential for achieving the lowest production costs among current thin film technologies. Because of thin film technology, mass-production of solar panels through the use of machines similar to a printing press, will aid in cutting cost for watt produced.
Solar cells become less efficient at converting solar energy into electricity as their cell temperatures increase. However, the efficiency of Thin Firm CdTe (Cadmium Telluride) semiconductor material is less susceptible to cell temperature increases than traditional semiconductors.
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Thin-film solar technologies often use non-silicon semiconductor materials including copper, indium, gallium and selenium (CIGS) to create photovoltaic cells that convert sunlight into electricity. Without the expensive and often sparse silicon, the cells are cheaper in terms of materials costs. The non-silicon materials can also be printed on flexible or light substances, which can create new applications for solar. Many companies are using thin-film technology to produce low-cost solar panels. The cost reduction comes from a new, continuous manufacturing process which uses cadmium telluride thin film rather than the more expensive crystalline silicon. Non-silicon semiconductor materials including copper, indium, gallium and selenium (CIGS) used to create photovoltaic cells.
The measurement of kilowatt-hours per kilowatt installed is an important factor. Calculate the average total solar watt output per dollar outlay. In most cases, when you are reach $0.15/kWh or better, you are competitive with your electric company.
Two 80W panels in series gives you 160 W. You still have the same *current* as you get from one panel, but twice the voltage. There are inverters, battery banks and cabling costs to consider. Most families use between 4 and can run up to 20 Kwh per day for heavy users. A 1000w system would produce about 4 Kwh per day. Build your own solar panel with a do it yourself kit and discover this energy saving technology.
Make your own do it yourself solar power system. Home solar systems can form a vital part of any home emergency survival kit. Having a solar backup could be life saving in a natural catastrophe, or any number of instances where you could be stranded from main power but you have a need for electricity