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WIND

Wind Power Turbine

Power in the Wind (W/m2) = 1/2 x air density x swept rotor area x (wind speed)3

Clean electricity generated from the wind: For centuries wind has been used to provide power for windmills. Now you can buy wind turbines to provide electricity for your home, business, or municipal building. New legislation permits wind turbines to tie into the grid to supplement and displace power you are currently buying from the local utility. In addition, new financial incentives make wind power a very cost effective option so you can lower and in some cases eliminate your utility bill! In 2008, 10,500 small wind turbines were installed in the U.S, proving that this technology has come of age.

Wind speed increases with height
Small increases in wind speed result in large increases in power (P~V3)

Save money and save the planet! With a wind turbine from GREENLOGIC, you'll produce your own electricity and control the future of your electric bill. You'll also be creating clean natural energy generating absolutely no pollution. GreenLogic's wind energy solutions are "grid-tied" and "net-metered" which means they seamlessly tie into your current utility connection and you get credit for all the power you produce. So the wind power energy you create helps power your appliances, lights and everything else plugged into your power outlets.

Spin your electric meter backwards: Reduce or even eliminate your utility bill. Excess power that you produce with your wind turbine spins your electric meter backwards and you get credit on your bill!

Natural, clean electricity: With wind power energy, you generate no pollution or global warming. Annually, a 10 kW wind turbine, prevents 18,000 lbs. of coal from being mined, prevents 36,000 lbs. of CO2 from entering the atmosphere, keeps 12,600 gallons of water from being consumed, and keeps sulfur dioxide, nitrous oxide, mercury, and other pollutants from being released into the environment.

Rebates & tax credits: The local utility and tax credits pay for up to 60%-80% of the system.

Reduce America's dependence on foreign oil: Americans consume 26% of the world's energy even though we only make up 5% of the world's population.

HOW IT WORKS:

How you get electricity now: Electrical power from your utility flows from the electric grid into your home or business through a meter. The meter measures how much electricity you consume for billing purposes.

Wind turbines produce electricity: Electricity is produced from wind that turns the blades of a wind turbine creating kinetic (motion) energy. When the turbine blades capture wind energy they spin a shaft that goes from the hub of the rotor to a generator. The generator turns that rotational energy into electricity. The more intense the wind the more electricity is generated.

Converting power: The electricity that the wind turbines produce can either be directly used in your building, sent back to the utility for credit, or placed into storage batteries for later use. To accomplish this, the power coming off the turbine goes through a device called an inverter (a box the size of a small cabinet mounted near your electric panel.) The inverter monitors the wind turbine, conditions the power so it is identical to the utility's power, and keeps track of how much electricity is produced. The inverter output is fed directly into your building's circuit panel (a.k.a. fuse box) so it can feed merge with the utility's power and feed any circuit in the building. These circuits feed all the outlets in your house with a combination of wind and normal utility power in a seamless manner.

Using the wind power you have generated: As you need electricity, it is drawn first from the wind system. If you need more electricity than the system is generating, it is seamlessly supplemented with power from the utility connection. If you have a battery backup feature on your wind power system, it will kick in during a power outage.

Your meter turns backwards & saves you money:Electrical power from your utility flows from the electric grid into your home or business through a meter. The meter measures how much electricity you consume for billing purposes.

REQUIREMENTS:

The right site is essential: In order to install a wind turbine on your property, it needs to meet certain very important criteria to ensure you can get a permit and to ensure you will produce enough power to justify the expense.

Local Codes: As wind power is very new, only a few towns have established clear codes for what is allowed. You will need to consult with a GreenLogic Analyst to determine what is permitted in your area. If no code is established in your area we can advise you on what is likely to be approved and how much effort will be involved.

Wind Potential of the Site: In order to produce power, wind turbines need significant amounts of wind. Long Island is a windy location, however, to gain access to the wind you must either have a very clear site with an open exposure, or you need to place the turbine high up, well above the tree line. If you are on farm land, or exposed waterfront, you are a good candidate. Otherwise you will need a tall pole mount (e.g. 60-120' high) to clear the trees and access the much stronger and steadier winds at those heights. In all cases, higher is better, so we will always seek to put the turbine as high as possible given the local wind codes and restrictions.

Fall Zone of Turbine: At present, many of the towns impose "fall zone" restrictions. These require that if the turbine were to fall over (they are engineered never to fall), that the wind turbine would fall on your property and would not hit any structures. This requirement, which applies to certain towns, creates the biggest limitation on the viability of the site. In general, to meet these requirements, the property must be a good sized property and have a good spot that is clear of structures and set back from property lines. Over time, we expect the towns to reduce these limitations as they realize that these wind energy systems will not fall over, and as people become more comfortable with the aesthetics and sound of these turbines.

Building Mounted Turbines: There are new designs for wind turbines that are intended for mounting on the building itself. At present, there has been no long term testing of these systems and no lab data to validate their impact on the structure in terms of output, stability, vibration, and noise levels. GreenLogic only sells proven technologies that have been thorough proper long term testing. Accordingly, GreenLogic does not advocate the use of building mounted wind turbines at this time.

Vertical vs. Horizontal Axis Wind Turbines: The traditional design for wind turbines involves horizontal axis turbines. This means that they look like an airplane propeller. These designs are proven over time and plenty of lab and field data exist to support their output and usage characteristics. More recently, new horizontal axis designs have entered the marketplace. These look more like a small radar or weather station and on a vertical axis. The reason for this design is to create compact smaller units that are easier to fit into small mostly residential settings and/or to mount on building parapets. Although these designs show promise, at present they are not well proven and as a result GreenLogic does not advocate their use. Until sufficient data is available to ensure output and long trouble free lives, GreenLogic has elected to stay focused on traditional and proven designs.

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