New Type of Inverter Could Drive Down the Cost of Solar Power

ArrayPower says that it has invented a “sequenced inverter” design that could cut the cost of solar power by 10%.

For those that don’t know what an inverter is, don’t worry, it is easy to understand and I will explain it: a typical inverter for a solar-powered home converts the DC (direct current) power that solar panels generate into 120- and 240-volt AC (alternating current) power, the same as what your power outlet provides. Small solar setups often generate DC at 12 volts, and that 12 volts of DC power is converted into 120 volts of AC power, which is suitable for most household appliances, portable devices chargers, etc.

The new inverter setup mentioned above involves equipping each solar panel with a small inverter, instead of connecting all solar panels to one large inverter.

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As solar panel manufacturers try to harvest more of the sun’s energy for less, they face increasingly diminishing returns. At roughly $1 per watt, the cost of solar modules now represents less than a third of the total cost of commercial solar installations. To cut the total cost of solar power—currently $3.00 to $3.50 per watt—bigger gains will have to come from improvements in the power electronics, wiring, and mounting systems required for solar installations.

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Solar powered homes that will compete in Solar Decathlon Europe 2012

Environmentally friendly homes can reduce inhabitants’ carbon footprints, save resources and lead the way for others to live the same way. Most of us, however, have been living in homes that are pretty standard, in that they don’t help us reduce our carbon footprints. The US Department of Energy has been trying to further green living in terms of homes and has been organizing the Solar Decathlon for a while now. The international competition is a biennial event that challenges 20 college teams to come up with conceptual homes that utilize solar energy. The teams get to work on site, detailing their prefabricated houses for 10 days in a bid to take home the Solar Decathlon title. 2012’s competition is set to begin and we’re eager to see who wins the coveted prize.

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