AVATAR™ small wind turbines are ideal for households, farming, telecom towers, communities and small businesses to use for on-site energy generation. Your individual site specifics (such as location, wind speed and local landscape) will eventually determine the best wind turbine type and capacity for your use.
Most wind turbines have three blades which face into the wind; the wind turns the blades around, this spins the shaft, which connects to a generator. A generator produces electrical energy from mechanical energy.
Tower or pole height varies according to wind turbine models and site surroundings, but generally range from 6 to 20 meters. In general, the higher the tower, the higher the average wind speed that the turbine will experience and the smoother the wind. The AVATAR™-I wind turbine pole height is minimum 20 feet (6m).
The operational life of AVATAR™ wind turbine is minimum 20 years.
AVATAR™ – I (1kW), at the daily mean wind speed of 5.5m/s, generates 5kWh/day.
AVATAR™ – I is 72 kg, AVATAR™ – III is 90 kg and AVATAR™ – V is 100 kg.
Battery sizing depends upon the electrical load, back up hours needed and turbine capacity. In general, a 1 kW wind turbine generating 5 kWh require a quantity of 4 tall tubular batteries with rating 12V 150Ah.
No, AVATAR™ wind turbines can be installed in 1-2 days.
Yes, AVATAR™ small wind turbines are mountable on roof tops.
The following are the advantages of AVATAR™ wind turbine and wind energy
• No fuel cost
• Environment friendly and pollution free electricity
• Low Operation & Maintenance (O&M) costs, unlike Solar
• No sound pollution
• No vibration troubles
• Visibility paints on blades for bird safety
• Low cut-in speed of 1.4 m/s
• Low wind speed power generation
• Power generation is day and night, rain or shine, summer or winter, unlike Solar
• Long operational life of 20+ years
• Climate resilience of -10o to +70 o Celsius
• Limited use of land, unlike Solar
• Accommodation of other parallel land uses such as farming.
• Employment generation
• New economic opportunities
• Local Infrastructure & sustainable economy development
Yes. Building Developers tell us that unattractive properties that would not sell, become easier to sell when wind turbines are installed to show that there is an additional income and when “value added” aspects of the property as a green eco-friendly property are introduced to it. Not only can buildings with AVATAR™ wind turbines get a higher price, but they attract affluent, interested and eco-conscious buyers.
Ideally, stand-alone turbines should be sited as far away as possible from buildings or trees, which may block the wind and cause turbulence. As a guide, the wind turbine should be about twice the height of obstructions in the immediate front of it (for at least the prevailing wind direction). In general, the turbine should be above the height of nearby obstructions that are within a distance of 100 meters of the tower. Also the less turbulent and varying the wind, the better the wind power generation. AVATAR™-I need 10 sq.ft space for the installation but during the assembly it need the height of tower space required to erect the wind turbine. After the erection it requires only 10 sq. ft space for stand up.
Only batteries intended for power system applications should be used. This means “deep cycle” type batteries, and not the Marine deep cycle type as these are not intended for the same application. Typically “true” deep-cycle batteries will be rated in amp-hours and have some indication of the number of charge-discharge cycles that are available. Beware of the dubious claims of “deep-cycle” claimed by the manufacturers of inexpensive batteries.
Small wind energy installations may require planning permission depending on your local laws and you should always consult the planning officials, preferably confirmed in writing if this is needed. It is also good manners to discuss your plans and aspirations with neighbours.
If I install the on-grid system do I take permission from the Electric Utility Company?
Automotive batteries are meant to discharge a large amount of current in a very brief time. The lead plates are thinner and often porous to allow rapid discharge. They will also wear faster and are not intended to be discharged far below their normal voltage. True deep cycle batteries are intended for more moderate loading and deeper discharge, and are made with thicker, longer lasting plates. The casing and construction of batteries intended for renewable energy systems are typically much tougher and are of higher quality than automotive batteries.
It can be installed on ground level or building terraces.
The minimum tower height required is 6 metres and can go up to 10m or 20m depending on site.
We have two types of towers:
1. Monopole tower
Note – we also have self-standing monopole tower, which can be installed without foundation.
There are two types of AVATAR™ small wind turbines: those connected to the electricity grid (“On-grid”) and those used for battery charging or backup power (‘‘Off-grid’’). Most systems sold today are off-grid, but demand is rising for on-grid systems which essentially use the grid as a “battery”: when the wind blows, the owner uses electricity from the turbine; when winds are low and consumption is high, the owner uses electricity from the grid. We have both type of system available on grid and off grid system. Where ‘Net Metering’ policies exist, which allows exporting power back to the electric grid, the owner can export excess power and earn credit or compensation or revenue as per the local laws.
AVATAR™ wind turbines are designed to have one of the world’s best low wind speed power generation for wind turbines. The Cut-In (starting) wind speed of AVATAR™ – I is 1.4 m/s and Start-Up (power generation) wind speed is 1.9 m/s. As power generated is directly proportional to the available wind speeds, we recommend, for better feasibility, sites with minimum 4 m/s annual mean wind speeds.
Routine inspections are to be performed once every few years of a turbine’s 20+-year lifespan. A professional installer or trained technician can maintain the turbine and tower through physical inspections and service.
Without wind, wind turbines cannot work. If you need power backup even when the wind doesn’t blow, you can use batteries to store energy when the wind turbine generates energy and use the electricity later on.
It differs for each Electricity Utility company. Please check this with your local Electricity Utility Company if they have this policy and if so, what incentives are available for such ‘Net metering’.
Renewable energy is energy that is generated from natural resources that are continuously replenished. This includes sunlight, geothermal heat, wind, tidal, hydro and various forms of biomass. This type of energy is not exhausted and is constantly renewed.
Yes, several wind turbines can be run in parallel.
It depends upon the wattage of appliances. On our website, there are charts and simple calculation formulas, you can calculate it from there. BACK UP =Battery Ah * (Volts/Load) * (0.8)
Yes, you can make it a hybrid system with solar.
Yes, AVATAR™ wind turbines can sustain wind speeds up to 60 m/s.
Yes, it can produce electricity during rains.
Small wind turbines may be installed as stand-alone systems, or they may be connected to the electric grid. Connecting to the grid requires the approval of the local utility company. Technical and insurance requirements for interconnection vary, as do metering arrangements. Connecting your system to the utility grid allows you to sell excess power that you generate to the utility, as well as to buy electricity from the utility when your needs exceed your wind-powered generation. Interconnected systems do not require batteries and thereby save on battery expenditure. If your utility offers a net metering or billing arrangement, you can even sell your excess power at the same price you pay for electricity you purchase, thereby increasing the value of your wind turbine investment.
AVATAR™ small wind turbines have been designed to be very quiet, for instance by having direct drive systems to avoid gearbox noise and to increase efficiency. Our generators are restricted to maximum 300 rpm at 6m/s wind speed; this restriction is controlled by yaw movement and blade angle. Due to this restricted RPM the generators do not produce any noise pollution and this also gives a better controlled charging voltage for battery bank, and provides a longer life to enclosed bearings. This restriction of RPM also enables wind turbine feasible for installing on terrace due to negligible vibration of the pole. In general, the sound of AVATAR™ wind turbine is not even more than 10% of the sound of the wind itself.
The rotor was not balanced well;
The wind turbine is not in vertical position;
The pole’s guy wires are loose or has too much play;
The pole/ tower is not adequately robust
For grid-connected systems, the user will not notice a difference when the wind is not blowing. The utility provides electricity when the wind does not blow, and any extra electricity the turbine generates is sent back to the utility system to be used by a neighbor. Off-grid turbines store power in batteries for on-demand use and if needed, can also be complemented by solar panels to provide more consistent generation.
1. Wind speed is too low
2. Installation location is not chosen well or the tower is not tall enough or not erected straight
3. The battery is too small, so that the charging end voltage is reached too early (the battery should at least have 100 Ah)
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