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SOLAR, WIND & WATER POWER - INDUSTRIAL GENERATORS

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Off Grid Generator New Zealand

IS LIVING OFF THE GRID RIGHT FOR YOU?

 

 

 

Solar grid tie Wind TURBINE generator 1 1 Micro hydro water turbine

Solar Panel Mono Crystalline 195w  1

SOLAR 

Wind & Hydro power are very site specific; solar is the most common form of renewable energy used for Off Grid power systems. 
The sun-powered option, includes the following components:  photovoltaic solar panels, inverter/charger and batteries.
A backup generator is recommended to charge your batteries when there is no sun for a period of time, or for when a lot of power is required for a task.  
This system can provide lots of electric power, especially if you get a lot of solar exposure where you live.  Without any moving parts and little maintenance,  a well maintained PV Solar system has a life of about 25 years.

Current Generation import only Tier One branded solar panels, giving you the best price & quality.   
 



WIND 

wind turbine pinnacleContact your local weather service to check on the average wind speed in your area. Generating electricity from residential-sized wind turbines is another option for off-grid energy.
Knowing the average and wind speed ranges, you can estimate how much electricity a given system will produce. Keep in mind, wind speeds on a specific site can vary significantly from regional averages depending on local topography.
When it comes to picking a turbine, size matters.
A 400-watt wind turbine, big enough to account for a few appliances, uses about a four-foot-diameter rotor; a 900-watt turbine uses a seven-foot turbine; a 10,000-watt (10 kW) turbine, enough to power most or all of a house, uses a 23-foot turbine and is mounted on a tower often more than 100 feet tall.
 
 
As with solar, there are pros and cons to going with wind energy off the grid;
The biggest determining factor is the need for wind:
Wind turbines have moving parts, which means more things require maintenance and have the possibility of failure but if you've got a good consistent breeze you can harvest its energy for years to come.
Current Generation supply Pinnacle wind turbines, based on the famous 'Proven' design, as well as ThinAir NZ-made turbines. These wind generators are quality designed to take on New Zealand conditions.


 


MICRO HYDRO - WATER TURBINE

Pelton wheel power spout 1 1Micro hydro electricity uses running water to generate electricity; it's produced from the energy in water flowing from a high level to a lower level that turns a turbine at the bottom end of the system.
Micro-hydro electricity generation can be the most cost effective of the three,  "our experience with micro-hydro systems has demonstrated that water power will produce between 10 and 100 times more power than PV or wind for the same capital investment."
If your source is good, it runs 24 hours a day, 7 days a week, providing lots of off-grid energy for a long, long time. Because it produces more consistent energy, fewer batteries are needed to store the energy (because there is less (or zero) time that the system isn't harvesting energy). It requires pretty specific on-site conditions; if you don't have a stream in the back yard, you can't use micro-hydro. If you have 40m of head (vertical drop) available and 10 litres per second of water flow, your site might be viable for a micro-hydro system.
 

Current Generation are agents for PowerSpout, the legendary, New Zealand conceived micro-hydro water turbine.

 

Measuring Head

You will need to measure the vertical drop in feet or meters (referred to as head or fall). 

Altimeter - obtain an altimeter accurate to 10 feet (3m), this is good for measuring falls greater that 70 feet (20m). Take the average of several readings.

Builder’s optical level - measure the fall of the river as you progress along its length. This is good for lower falls and it is very accurate.

Low cost laser level - at dusk or in low light conditions project a horizontal beam and using a long staff measure the vertical drop, as you progress down the stream. You may have to repeat this at a few locations.

Pipe - lay a length of 3/4 inch (20mm) plastic pipe or hose in the riverbed, fix a pressure gauge to the end and measure the pressure of the water with the pipe full, 14.5 psi is 33 feet of fall (100 KPa is 10m of fall). Make sure you clear the line of all air first. This is a very accurate method and easy to do. 
 

Measuring Flow

IMPORTANT: "Gallons," "gals," and "gpm" refer to the US Imperial Gallon , as opposed to the UK Imperial Gallon.
  • Try and find a place in the stream where it drops quickly over a rock, place your bucket below and measure the time to fill it.
  • At lower flow rates, less than 150 gpm (10 l/s) you need to be accurate in measuring the flow. If you have a 2 gallon paint pail and the river can fill it in 2 seconds you have 1 gps = 60 gpm, this equates to 227 l/min, 3.79 l/s.
  • Use the largest possible bucket you can find as the longer it takes to fill the more accurate your reading will be.
  • For flows greater than 150gpm try to estimate your flow using a larger bucket in the river and measure at various places across the river. It will not be as accurate but at higher flows it is not that critical.
 

 

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