Rooftop Wind Power: First Things First

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Rooftop wind power seems to be the latest alternative energy system to benefit from escalating fuel costs. Although exact sales figures for roof top systems are hard to come by, current and anticipated demand must be high to warrant the introduction of new models from various manufacturers.

I think the principal allure for those who purchase a roof top system is the low cost to participate in the renewable energy movement. The 200 watt Air Breeze turbine for example, sells for just under $600.

Another attraction is low installation cost. A tower costing thousands of dollars can be replaced by a $39 tripod or a length of pipe bolted to the side of the house. However, the savings from reduced installation costs are offset somewhat by the cost of a battery storage system.

A battery storage system is necessary because rooftop turbines, unlike larger tower mounted systems, generate power in fits and starts due the unpredictability of rooftop wind conditions.

The function of the batteries is to collect the unpredictable power output from the turbine and transfer it to your home in usable, measured units of power.

All wind turbine systems, both large and small, must meet three basic requirements to achieve any degree of success:

1. Minimum wind speeds of 10-12 mph at your site.

2. Your cost for electricity should be $0.10 per kWh or higher.

3. Compliance with local zoning laws.

If you’re serious about rooftop wind power, you can learn more about the three basic requirements by reading Rooftop Wind Turbines: Do You Have What It Takes?