Grid tie inverters in action meter goes backwards

!9#: Grid tie inverters in action meter goes backwards

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California Residential Wind Power

!9#: California Residential Wind Power

The State of California leads the way in renewable energy initiatives and offers generous rebates of 50% for select wind power systems.

The wind power systems described in this article are connected to the utility company, or grid tied, and don't incorporate storage batteries. In California excess power generated by a wind power system can be sold back to the utility (net metering).

The 5 basic requirements for a wind power system:

1. You own your own home.

2. Your property is at least one half acre.

3. Your homeowners association or city/county does not restrict towers.

4. The average wind speed in your area exceeds 9 mph.

5. Your utility allows net metering.

Wind Speed Requirements
Most wind turbines have a start up speed of 8 MPH but require a minimum average wind speed of 12 MPH to generate an appreciable amount of electricity for your home. Not surprisingly, the highest average wind speeds in California are registered within 25 miles of the Pacific Coast.

The minimum height at which wind speed is measured on these wind maps is 30 meters, or 100 feet. Since most residential wind turbine towers are 40-80 feet in height, your actual wind speed will be less than what is shown on the maps. As tower heights increase, the wind becomes faster and less turbulent. A 20 foot increase in tower height, from 60 to 80 feet, can increase the output of your wind turbine by as much as 36%.

Lot Size Requirements
A wind turbine needs at least half an acre of land to ensure it will be located far enough away from wind impeding obstructions such as trees, your house and other out-buildings. The tower must also extend 20 feet above these obstructions. Generally speaking, the higher the tower, the more land is required by local zoning laws.

California Wind Power Tax Incentives and Rebates
Currently the Federal government doesn't offer a wind power tax credit. However, California offers generous rebates for eligible wind turbines at the rate of .50 a watt for the first 7.5kW (7,500 watts) of rated output and .50 per watt thereafter up to 50kW (50,000 watts). The complete list of eligible equipment is available at: http://www.consumerenergycenter.org/cgi-bin/eligible_smallwind.cgi

For instance, Southwest Windpower's Whisper 200, 1,000 watt wind turbine would qualify for a ,500 rebate. This represents 50% of the total ,000 cost for a wind turbine, inverter and 80' tower.

Wind Turbine Output
The Whisper 200 turbine will produce 158kW per month at 12 MPH. The higher the average wind speed, the more power it will generate. For most homes, 158kW represents only 20-25% of monthly usage. On the other hand, your electric bill will immediately drop by 20-25% and the cost for electricity generated by the wind turbine 20 years from now will be the same as it is today.

At the other end of the residential wind power spectrum is the Bergey BWC 10,000 watt wind turbine. A 10Kw system is capable of providing all the necessary power for most homes. The initial cash outlay for a system of this size is around ,000 including installation. This is before the ,000 rebate from the State of California.

Wind System Towers
Three types of towers are most commonly used for residential wind turbines. The most expensive is the monopole tower. This is a scaled down version of the towers used on wind farms.

The second type is the tilt up tower. The tower is raised using an attached gin pole and is stabilized with guy-wires.

The third is a lattice tower also stabilized with guy-wires. A much taller version of this tower is used by television stations.

Advantages of Wind Power
The cost/benefit of a wind power system makes them relatively inexpensive to own. With the rebate factored in, a 10Kw system will pay for itself in as little as 6 or 7 years. Mechanically, the simple design is easy to install and requires little if any maintenance. Although you'll have your share of calm days, you'll also have plenty of windy California nights when you're wind turbine is spinning away while your neighbor's solar array is literally collecting dust.

California Residential Wind Power

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Enphase Energy M215-60-2LL-S22

!9#: Enphase Energy M215-60-2LL-S22

Brand : Enphase Energy | Rate : | Price :
Post Date : Dec 06, 2011 18:42:08 | Usually ships in 1-2 business days

Enphase Energy M215-60-2LL-S22

Based on Enphase's third generation technology, the M215 incorporates the latest innovations in power electronics and custom microchips to deliver 96% CEC efficiency and a range of patented performance features that maximize the performance of 60-cell solar module. In addition, the M215 is lighter weight than the M190 and offers a "single-bolt" mounting bracket that makes installation even easier.

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New 500w Small Grid Tie Solar Power Inverter Converter 24-52v Dc to 90v-130v Ac

!9# New 500w Small Grid Tie Solar Power Inverter Converter 24-52v Dc to 90v-130v Ac

Brand : mass power | Rate : | Price :
Post Date : Nov 30, 2011 10:54:23 | Usually ships in 1-2 business days

New 500w Small Grid Tie Solar Power Inverter Converter 24-52v Dc to 90v-130v Ac

INTRODUCTION: The only plug and play small grid tie photovoltaic system;The stackable small grid tie photovoltaic system

INSTALLATION :The individual system of SGPV is shown in Figure 2

1,Installing the solar panel of the SGPV at a suitable location that sunshine can irradiate on it.

2,Connecting the cables of the solar panel to the DC input terminals of the small grid tie inverter of the SGPV, inserting the plug of the inverter into the socket of the home grid.

3,When the sun shines, the SGPV will convert the solar energy to the home grid.

SGPV can be stackable, and all SGPVs are independent each other. The total power converting to the grid is the total power of all SGPVs. The installation of each SGPV is same. Connecting large quantity of SGPV to the grid, this will construct high-power grid-tie system.

Model: SUN-500G

Normal AC Output Power: 450W

Maximum AC Output Power: 500W

AC Output Voltage Range: 90V ~ 130V

AC Output Frequency Range: 46Hz ~ 65Hz

Total Harmonic Distortion(THD): <5%

Power Factor: 0.99

DC Input Voltage Range: 24V ~ 52V

Peak Inverter Efficiency: 92%

Standby Power consumption: <0.5W

Output Current Waveform: Pure Sine-wave

MPPT Function: Yes

Over Current Protection: Yes

Over Temperature Protection: Yes

Reverse Polarity Protection: Yes

Island Protection: Yes

Stackable: Yes

Package Includes?Power inverter and Power cord

Operating Temperature Range: -10 ~ 45 centigrade

Dimension: 332mm*265mm*135mm

N.W.:3.4Kg

G.W: 3.9Kg

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Unisolar 4.7KW (4760 Watt) Grid Tie Electric Generation Package.Includes all major components.

!9# Unisolar 4.7KW (4760 Watt) Grid Tie Electric Generation Package.Includes all major components.

Brand : SoldonSUN | Rate : | Price :
Post Date : Nov 25, 2011 10:21:57 | Usually ships in 6-10 business days

Save your hard earned $$ by installing Solar. This 4.7KW Solar Electric Generation Package is ideal for a small to medium size home or a small commercial applications. Many Federal /Local Government & utility benefits available. Includes all major components & line drawing accept installation. Simple & easy to install. Unisolar 136 Watt Solar Panels (Peel & Stick, metal roof or comparable membrance) PVPowered Inverter with AC/DC Disconnects, SMA Combi Switch & fuses, Delta Lightning arresters, PVP Data monitoring system (monitors KW generated through this system daily/weekly/monthly/yearly) Unisolar wiring management system tray & cover. Take advantage of 30% Federal Tax incentive/rebate set to expire end of 2010. Additional State & utility rebates (chek your local area)

• Ease of installation Peel and Stick
• 20 Year performance warranty. Made in USA
• Flexible Light Weight & Durable
• Best Resistance to wind uplift, No roof penetration
• Junction box with MC Cables.

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Grid Tie Inverter For Solar Panel

!9# Grid Tie Inverter For Solar Panel

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A grid tie inverter is a particular type of inverter that will allow you to take the electricity you generate with things like solar panels or wind turbines and sell it back to the power company.

The 1978 Federal Public Utilities Regulatory Policies Act (PURPA) states that everyone in the US has the right to sell renewable energy to their local power company. This law was introduced in response to the 1973 Arab oil embargo and is equally relevant today.

The function of an ordinary power inverter is to convert DC electricity to AC so that it can be used in the home. They also work to convert 12 or 24 volt electricity to 120 volt, for the same reason. While inverters are an ordinary part of any renewable energy system, you can't use just any inverter to sell power back to the utility company. The AC power that you get from an inverter is essentially the same as that which comes right from the grid: 120 volts, 60 cycles per second. However, it's probable that the two sources of electricity are out of phase with one another. Your electricity may be cycling up while the grid's is cycling down, and vice versa. A grid tie inverter will ensure that your inverter stays in sync with the grid.

Grid tie inverters offer other benefits as well. As a rule, electricity flows from higher voltage to lower voltage. This is the principle under which battery charging, for example, works. The battery is connected to a charger that outputs at higher voltage, and the electricity flows to the location of lower voltage: the battery. This is why a 12 volt battery takes a charger of over 12 volts.

Therefore, moving electricity back to the grid requires electricity which is of a higher voltage than the grid's electricity. This is another way in which a grid tie inverter comes in handy, as it keeps track of voltage levels as well. Your excess higher voltage electricity will flow out to the grid, and your power meter will run in reverse.

It's not surprising, considering their extended functionality, that grid tie inverters are more expensive than ordinary inverters. However, a grid tie inverter will give you the opportunity to actually make money using your renewable energy system, so it's worth the investment. Anyone using wind or solar energy should strongly consider going with a grid tie inverter.

Grid Tie Inverter For Solar Panel

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Solar Battery Charger Kit for 12V. RV Marine or Home. Flexible Solar Panel aminate, Charge Controller, PV Combiner box w/breaker & extension Cable

!9# Solar Battery Charger Kit for 12V. RV Marine or Home. Flexible Solar Panel aminate, Charge Controller, PV Combiner box w/breaker & extension Cable

Brand : SoldonSUN | Rate : | Price : $499.00
Post Date : Nov 03, 2011 06:37:57 | Usually ships in 3-4 business days

Solar Battery Charger Kit for 12V. RV Marine or Home. Flexible Solar Panel aminate, Charge Controller, PV Combiner box w/breaker & extension Cable

68 watt Complete package includes 68 watt Flexible Solar Panel, Baby box with circuit breaker, 6.5 Amp Charge Controller and 30' MC Cable. UniSolar flexible solar panel. simple & easy peel and stick installation. Ideal for metal roof. RV /Boat, Home & Commercial applications. Battery charging or Grid tie Solar Systems. UniSolar is one of the largest manufacturer of Flexible Thin Film Solar Panels. Plug and Play.

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