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Central Inverters for Solar - Grid Tie

Like all inverters, a grid-tie or grid-interactive inverter converts the direct current (DC) power from your renewable energy source into the alternating current (AC) used in homes and businesses. These inverters are intended specifically for grid-tied applications where they will be tied into the utility grid.

While it is possible to completely eliminate your utility bill with a grid-tie system, many homeowners use grid-tie systems to supplement their usage by using a combination of both their utility grid and their solar array (ie. 70% solar, 30% utility grid). A grid-tie system can also offset 100% of your energy needs.

One of the major benefits of a grid-tie system is net metering, where unused energy is fed back into the utility grid. When no power is being generated by the renewable energy system, the home's power is drawn from the utility grid. The energy the homeowner pays for is the difference between the power drawn from the grid and the power fed into the grid. Most grid-tie inverters cannot be used independently of the utility grid.

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ABB UNO-8.6-TL-OUTD-S-US-A > 8600 Watt Transformerless Grid Tie Inverter CPS FlexOM Gateway > FlexOM Data Communications and Control Gateway CPS SCA25KTL-DO/US-208VAC > 25kW 208 VAC 3-Phase Grid-Tie Inverter for Commercial Applications with APS Rapid Shutdown WireBox
Our Price: $3,083.55
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Our Price: $800.00
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Our Price: $5,525.00
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ABB UNO-8.6-TL-OUTD-S-US-A - 8600 Watt Inverter CPS FlexOM Gateway > FlexOM Data Communications and Control Gateway CPS SCA25KTL-DO/US-208VAC > 25kW 208 VAC 3-Phase Grid-Tie Inverter for Commercial Applications - Fixed Voltage
ABB UNO
8600 Watt
Transformerless Inverter
CPS
FlexOM Data Communications & Control Gateway
CPS
25kW 208 VAC 3-Phase Grid-Tie Inverter
for Commercial Applications - Fixed Voltage
SCA25KTL-DO/US-208VAC
Outback FXR2024E > 2000 Watt 24 Volt 230 VAC Sealed International Off-Grid / Grid-Hybrid Inverter Outback FXR2348E > 2300 Watt 48 Volt 230 VAC Sealed International Off-Grid / Grid-Hybrid Inverter Outback Power FXR2012A > 2000 Watt 12 Volt Sealed Off-Grid Inverter
Our Price: $1,920.00
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Our Price: $1,905.00
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Our Price: $2,190.00
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Outback 2000 Watt 24 Volt 230 VAC Sealed International Off-Grid / Grid-Hybrid Inverter - FXR2024E Outback 2300 Watt 48 Volt 230 VAC Sealed International Off-Grid / Grid-Hybrid Inverter - FXR2348E Outback 2000 Watt 12 Volt Sealed Off-Grid Inverter - FXR2012A
OutBack
2000 Watt 24 Volt 230 VAC Sealed
International Off-Grid / Grid-Hybrid Inverter
OutBack
2300 Watt 48 Volt 230 VAC
Sealed International Off-Grid / Grid-Hybrid Inverter
OutBack
2000 Watt 12 Volt Sealed
Off-Grid Inverter
Outback Power FXR2524A-01 > 2500 Watt 24 Volt Sealed Grid-Hybrid Inverter - UL 1741 SA Compliant Outback Power FXR3048A-01 > 3000 Watt 48 Volt Sealed Grid-Hybrid Inverter - UL 1741 SA Compliant Outback Power VFXR2812A > 2800 Watt 12 Volt Vented Off-Grid Inverter
Our Price: $2,075.00
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Our Price: $1,933.00
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Our Price: $2,392.00
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Outback Power FXR2524A-01 > 2500 Watt 24 Volt Sealed Grid-Hybrid Inverter - UL 1741 SA Compliant Outback Power FXR3048A-01 > 3000 Watt 48 Volt Sealed Grid-Hybrid Inverter - UL 1741 SA Compliant Outback 2800 Watt 12 Volt Vented Grid-Tie Inverter - VFXR2812A
OutBack
2500 Watt 24 Volt Sealed
Grid-Hybrid Inverter - UL 1741 SA Compliant
OutBack
3000 Watt 48 Volt Sealed
Grid-Hybrid Inverter - UL 1741 SA Compliant
OutBack Power
2800 Watt 12 Volt Vented
Off-Grid Inverter
Outback Power VFXR3524A-01 > 3500 Watt 24 Volt Vented Grid-Hybrid Inverter - UL 1741 SA Compliant Outback Power VFXR3648A-01 > 3600 Watt 48 Volt Vented Grid-Hybrid Inverter - UL 1741 SA Compliant Outback VFXR3024E > 3000 Watt 24 Volt 230 VAC Vented International Off-Grid / Grid-Hybrid Inverter
Our Price: $2,214.00
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Our Price: $2,222.00
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Our Price: $2,020.00
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Outback Power VFXR3524A-01 > 3500 Watt 24 Volt Vented Grid-Hybrid Inverter - UL 1741 SA Compliant Outback Power VFXR3648A-01 > 3600 Watt 48 Volt Vented Grid-Hybrid Inverter - UL 1741 SA Compliant Outback 3000 Watt 24 Volt 230 VAC Vented International Off-Grid / Grid-Hybrid Inverter - VFXR3024E
Outback Power
3500 Watt 24 Volt Vented Grid-Hybrid Inverter
UL 1741 SA Compliant - VFXR3524A-01
Outback Power
3600 Watt 48 Volt Vented Grid-Hybrid Inverter
UL 1741 SA Compliant - VFXR3648A-01
OutBack
3000 Watt 24 Volt 230 VAC
Vented International Off-Grid / Grid-Hybrid Inverter
Outback VFXR3048E > 3000 Watt 48 Volt 230 VAC Vented International Off-Grid / Grid-Hybrid Inverter SMA SBS Sunny Boy Storage 3.8-US-10 > 3800 Watt 208 / 240 Volt Single Phase Grid-Tie Battery Storage Inverter - Integrated DC Disconnect SMA SBS Sunny Boy Storage 5.0-US-10 > 5000 Watt 208 / 240 Volt Single Phase Grid-Tie Battery Storage Inverter - Integrated DC Disconnect
Our Price: $1,920.00
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Our Price: $2,334.50
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Our Price: $2,389.00
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Outback - 3000 Watt 48 Volt 230 VAC Vented International Off-Grid / Grid-Hybrid Inverter - VFXR3048E SMA SBS Sunny Boy Storage 3.8-US-10 > 3800 Watt 208 / 240 Volt Single Phase Grid-Tie Battery Storage Inverter - Integrated DC Disconnect SMA SBS Sunny Boy Storage 5.0-US-10 > 5000 Watt 208 / 240 Volt Single Phase Grid-Tie Battery Storage Inverter - Integrated DC Disconnect
OutBack
3000 Watt 48 Volt 230 VAC
Vented International Off-Grid / Grid-Hybrid Inverter
SMA
Sunny Boy Storage 3.8kW 208 / 240 Volt Single Phase Grid-Tie Battery Storage Inverter
Integrated DC Disconnect - SBS 3.8-US-10
SMA
Sunny Boy Storage 5.0kW 208 / 240 Volt Single Phase Grid-Tie Battery Storage Inverter Integrated DC Disconnect - SBS 5.0-US-10
SMA SBS Sunny Boy Storage 6.0-US-10 > 6000 Watt 208 / 240 Volt Single Phase Grid-Tie Battery Storage Inverter - Integrated DC Disconnect SMA Sunny Boy 3.0-US - SB-3.0-1SP-US-41 > 3000 Watt 208/240 VAC Single Phase Grid-Tie Inverter SMA Sunny Boy 3.8-US - SB-3.8-1SP-US-41 > 3800 Watt 208/240 VAC Single Phase Grid-Tie Inverter
Our Price: $2,825.00
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Our Price: $1,365.00
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Our Price: $1,450.00
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SMA SBS Sunny Boy Storage 6.0-US-10 > 6000 Watt 208 / 240 Volt Single Phase Grid-Tie Battery Storage Inverter - Integrated DC Disconnect SMA Sunny Boy 3.0-US - SB-3.0-1SP-US-41 > 3000 Watt 208/240 VAC Single Phase Grid-Tie Inverter SMA Sunny Boy 3.8-US - SB-3.8-1SP-US-41 > 3800 Watt 208/240 VAC Single Phase Grid-Tie Inverter
SMA
Sunny Boy Storage 6.0kW 208 / 240 Volt Single Phase Grid-Tie Battery Storage Inverter Integrated DC Disconnect - SBS 6.0-US-10
SMA
3000 Watt 208/240 VAC Single Phase Grid-Tie Inverter
SB-3.0-1SP-US-41 - Sunny Boy 3.0-US
SMA
3800 Watt 208/240 VAC Single Phase Grid-Tie Inverter
SB-3.8-1SP-US-41 - Sunny Boy 3.8-US
SMA Sunny Boy 5.0-US - SB-5.0-1SP-US-41 > 5000 Watt 208 / 240 Volt Single Phase Grid-Tie Inverter SMA Sunny Boy 6.0-US - SB-6.0-1SP-US-41 > 6000 Watt 208 / 240 Volt Single Phase Grid-Tie Inverter SMA Sunny Boy 7.0-US - SB-7.0-1SP-US-41 > 7000 Watt 208 / 240 Volt Single Phase Grid-Tie Inverter
Our Price: $1,630.00
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Our Price: $1,690.00
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SMA Sunny Boy 5.0-US - SB-5.0-1SP-US-41 > 5000 Watt 208 / 240 Volt Single Phase Grid-Tie Inverter SMA Sunny Boy 6.0-US - SB-6.0-1SP-US-41 > 6000 Watt 208 / 240 Volt Single Phase Grid-Tie Inverter SMA Sunny Boy 7.0-US - SB-7.0-1SP-US-41 > 7000 Watt 208 / 240 Volt Single Phase Grid-Tie Inverter
SMA
5000 Watt 208 / 240 Volt Single Phase Grid-Tie Inverter
SB5.0-1SP-US-41 - SMA Sunny Boy 5.0-US
SMA
6000 Watt 208 / 240 Volt Single Phase Grid-Tie Inverter
SB-6.0-1SP-US-41 - Sunny Boy 6.0-US
SMA
7000 Watt 208 / 240 Volt Single Phase Grid-Tie Inverter
SB7.0-1SP-US-41 - Sunny Boy 7.0-US
SMA Sunny Boy 7.7-US - SB-7.7-1SP-US-41 > 7700 Watt 208 / 240 Volt Single Phase Grid-Tie Inverter SMA Sunny Boy SBS-ABU-200-US-10 > Storage Automatic Backup Unit, 120/240VAC - 200A SMA Sunny Boy Storage Bundled Kit BATB-102-BY-US-10 > Includes BYD Battery-Box HVL 12.0, Sunny Boy Storage 6.0 Inverter, SMA Storage Automatic Backup Unit
Our Price: $1,995.00
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Our Price: $3,833.00
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Our Price: $13,520.00
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SMA Sunny Boy 7.7-US - SB-7.7-1SP-US-41 > 7700 Watt 208 / 240 Volt Single Phase Grid-Tie Inverter SMA Sunny Boy SBS-ABU-200-US-10 > Storage Automatic Backup  Unit, 120/240VAC - 200A SMA Sunny Boy Storage Bundled Kit BATB-102-BY-US-10 > Includes BYD Battery-Box HVL 12.0, Sunny Boy Storage 6.0 Inverter, SMA Storage Automatic Backup Unit
SMA
7700 Watt 208 / 240 Volt Single Phase Grid-Tie Inverter
SB7.7-1SP-US-41 - Sunny Boy 7.7-US
SMA
Sunny Boy Storage Automatic Backup Unit
120/240VAC - 200A - SBS-ABU-200-US-10
SMA
Sunny Boy Storage Bundled Kit
Includes BYD Battery-Box HVL 12.0, Sunny Boy Storage 6.0 Inverter, SMA Storage Automatic Backup Unit
BATB-102-BY-US-10
SMA Sunny TriPower CORE1 33-US-41 > 33.3kW Grid-Tie 3-Phase Inverter for Commercial Applications - with Integrated AC and DC Disconnect SMA Sunny TriPower CORE1 62-US-41 > 62.5kW Grid-Tie 3-Phase Inverter for Commercial Applications - with Integrated AC and DC Disconnect SolarEdge HD-Wave SetAPP SE3000H-US000BNU4 > 3.0kW 240 Volt AC Single Phase Grid-Tie Inverter
Our Price: $5,260.00
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Our Price: $7,700.00
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Our Price: $1,374.00
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SMA Sunny TriPower CORE1 33-US-41 > 33.3kW Grid-Tie 3-Phase Inverter for Commercial Applications - with Integrated AC and DC Disconnect SMA Sunny TriPower CORE1 62-US-41 > 62.5kW Grid-Tie 3-Phase Inverter for Commercial Applications - with Integrated AC and DC Disconnect SolarEdge HD-Wave SetAPP SE3000H-US000BNU4 > 3.0kW 240 Volt AC Single Phase Grid-Tie Inverter
SMA
33.3kW Grid-Tie 3-Phase Inverter for Commercial Applications
Sunny TriPower CORE1 33-US-41
SMA
62.5kW Grid-Tie 3-Phase Inverter for Commercial Applications
Sunny TriPower CORE1 62-US-41
SolarEdge
HD-Wave SetAPP 3.0kW 240 Volt AC Single Phase Grid-Tie Inverter
SE3000H-US000BNU4
SolarEdge HD-Wave SetAPP SE3800H-US000BNU4 > 3.8kW 240 Volt AC Single Phase Grid-Tie Inverter SolarEdge HD-Wave SetAPP SE5000H-US000BNU4 > 5kW 208/240 Volt AC Single Phase Grid-Tie Inverter
Our Price: $1,595.00
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Our Price: $1,788.00
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SolarEdge HD-Wave SetAPP SE3800H-US000BNU4 > 3.8kW 240 Volt AC Single Phase Grid-Tie Inverter SolarEdge HD-Wave SetAPP SE5000H-US000BNU4 > 5kW 208/240 Volt AC Single Phase Grid-Tie Inverter
SolarEdge
HD-Wave SetAPP 3.8 kW 240 Volt AC Single Phase Grid-Tie Inverter
SE3800H-US000BNU4
SolarEdge
HD-Wave SetAPP 5kW 208/240 Volt AC Single Phase Grid-Tie Inverter
SE5000H-US000BNU4
   
 
1

What is a power inverter?

The basic function of a solar powered inverter is to convert the direct current to alternating current. Solar panels, and in fact almost all eco-friendly power sources such a wind turbines, generate “direct current”. But almost everything that makes up the fabric of civilization runs on alternating current. Current flows from a battery or solar cell in one direction, but an alternating current stream reverses direction 60 times each second. While this may seem wasteful, the detailed physics of the situation mean the alternating current can be sent over longer distances more efficiently that direct current. Don’t worry if the advantages of AC current do not seem obvious - even Thomas Edison was uncomfortable with alternating current! Suffice it to say that almost all the devices in your home; motors, appliances, televisions, use alternating current.

What is a grid tie power inverter?

Grid Tie Inverter

The main difference between a standard power inverter and a grid tie power inverter is that the latter also ensures that the power supplied will be in phase with grid power. This allows individuals with surplus power (wind, solar, etc) to sell the power back to the utility in the form of net metering or the arrangement your local utility offers.

On the AC side a grid tie inverter must supply electricity in sinusoidal form, synchronized to the frequency of the grid and limit the feed in voltage to no higher than the grid voltage. A grid tie inverter also must disconnect from the grid if the utility grid goes down (blackout). In the event of a blackout, the grid tie inverter will shut down to prevent potentially harming the line workers who are sent to fix the power grid. See wikipedia article on grid tie inverters.

On the DC side, the power output of a module varies as a function of the voltage in a way that power generation can be optimized by varying the system voltage to find the 'maximum power point'. Most inverters therefore incorporate 'maximum power point tracking' (MPPT).

How Solar Powered Inverters and Alternating Current work

The alternating current we usually need to get from our solar powered inverter needs to match the alternating current from our electrical utility. This current alternates because it is produced by rotating electrical generators. Current flows when a coil of wire passes thru a magnetic field. Generators are designed to pass coils of wire thru a magnetic field as they spin, so the current actually leaves, and then returns, to the power plant. As it happens, by using alternating current, the system can be designed for higher voltage and lower current, allowing more power to move thru the grid with less loss to heat.

Current is what causes energy to be wasted in power transmission thru wire. To reduce this ‘line drop’ loss, the voltage applied at the power plant which drives this current can be rather high. Along the way to your house, the voltage is ‘dropped’ in a series of transformers which can be thought of as big coils of wire, almost as a generator with no moving parts.

A solar powered inverter, like any inverter, converts steady direct current from a solar cell or battery to a smooth oscillating sine wave by switching the DC power on and off, very quickly. As a rough cut, switching the DC power 60 times a second creates what is called a ‘square’ wave. But if we subtract out power switched 180 times a second we can ‘round the corners’ of the square’ a bit. And by further switching in power at 300 and out at 420 times a second an inverter can approach a smooth AC wave quite closely. Some electrical components (capacitors and inductors) used on the AC Side of the inverter can store and discharge a bit of power as the many square waves pass, further smoothing out the stack of square waves and approximate regular AC Power.

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