On January 25, 2005, LIPA dedicated two wind turbines at the
decommissioned Shoreham nuclear power plant site. These new
turbines symbolize LI’s energy future: Renewables.
The two, 50 kilowatt (kW) AOC wind turbines, situated on a
47-acre parcel of property owned by LIPA, are part of LIPA’s
Clean Energy Initiative (CEI), a multi-year $355-million program
implemented to promote
energy conservation and efficiency, and to research, develop and
implement the use of alternative energy technologies such as
wind and solar power, and fuel cells.
Power
The wind turbines are located about 1,000 feet north of
North Country Road, and are about 300 feet apart. Each
turbine occupies a ground area of about 35 feet by 25 feet.
The 100-foot high wind turbine towers have three 25-foot
blades to catch the wind.
Emission Saving
Combined the turbines are capable of generating about
150,000 to 200,000 kilowatt-hours of energy each year,
enough to power about 16 to 20 average-sized Long Island
homes. The operation of these wind turbines will eliminate
the emissions of as much 800 lbs of Sulfur dioxide, 300 lbs
of Nitrous Oxides, 200,000 lbs Carbon dioxide per year.
Design
The turbines are designed for downwind operation, having a
yaw bearing that allows the blades to track the wind and
foster proper alignment. A Programmable Logic Controller
(PLC) is used to release or apply the parking brake within
certain operating parameters.
With sustained winds at the hub of at least 11 mph, the
PLC operates to release the parking brake. The previously
locked blades then begin to spin and, at an appropriate
speed, the generator begins to feed power to the grid.
Similarly, at sustained winds of about 50 mph, the turbines
will automatically shut down to protect them for being
damaged by excessive winds.
Noise
At a distance of 600 feet, sound from small wind turbines is
less than background noise in the average home or office, or
from light road traffic from inside a car, or from the wind
itself.
Proven Success
Wind turbine units of this type have been successfully
tested by the National Renewable Energy Laboratory (NREL)
and are in operation at multiple sites throughout the world.