The Watt Power output of a Solar module is the number of watts output when it is illuminated under standard conditions. Watt Peak (Wp) is the direct current watts output of a solar module as measured under an Industry standardized Light Test.

Solar prices are falling fast, especially with thin-film technology. From early $27 per Watt Peak (Wp) prices to an expected $1 in the near future. At $1 Wp, grid parity will have been achieved in Photovoltaics (PV) and will be able to compete with the prevailing price of electricity.

Solar panels that cost less than $1 per watt to produce are on their way, as Colorado State University’s new method for low-cost, high-efficiency solar panels looks set to begin mass production. They will be sold for about $2 per watt to the public, about half the cost of current 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.

The lowest thin film module price is at $2.49 per watt (1.89 per watt) from a Germany-based retailer. As a general rule, it is typical to expect thin film modules to be at a price discount to crystalline silicon (for like module powers). As thin film manufacturers expand production, prices are expected to drop dramatically.

Thin Firm CdTe (Cadmium Telluride) modules to generate relatively more electricity under high ambient (and therefore high cell) temperatures. Which means it is more efficient should there be high temperatures.

Advanced thin film design produces high energy yield across a wide range of climatic conditions with excellent low light response and temperature response coefficient. Frameless laminate is robust and can take a variety of shapes, is cost effective and recyclable as well.

What really matters is the total kilowatt-hours a panel produces. Then calculate the average solar wattage produced per dollar spent. Chances are, when you are reach $0.15/kWh or better, you are competitive with your electric company.

There are cabling costs battery banks and inverters to consider. Calculating solar output, use an average of 5 hrs per day of sun. Eg. 4 x 80w panels produce 320 watts x 5 hrs should produce 1600 watts or 1.6 Kw per day. A 1000w system would produce about 4 Kwh per day. Most families use between 3-10 Kwh per day. Harness solar panel kits and discover this energy saving technology.

Originally posted 2009-05-05 08:59:47.

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