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Welcome to Wholesale Solar, your source for discount prices on solar panels and renewable energy products for home power, back-up power, solar & wind power, off-grid & grid intertied residential, marine and RV power systems.  Retail and wholesale pricing.


See reduced prices on solar panels, solar panels by the pallet, solar inverters.

We design and sell renewable energy systems for projects large and small, for homeowners and do-it-yourselfers, contractors, installers, electricians, and developers.  Call one of our experienced solar design techs to talk about your project at 1 (800) 472-1142. If you have your most recent electric bill handy, we'll be able to get started with the design process right away.

Introducing Four Star Solar's mobile battery backup unit

"Wholesale Solar is 100% employee owned. Each of us has a personal stake in providing outstanding service to our customers. We thrive on your success!" -Allie, Employee Owner

Special Pricing on Pallets of Solar Panels
Model
Watts Quantity Per Pallet Total Pallet Watts Price Per Watt Price
305 20 6,100 $0.86
$5,270
$5,270
255 25 6,375 $0.89
$5,682
$5,682
250 25 6,250 $0.86
$5,375
$5,375
250 25 6,250 $0.86
$5,375
$5,375
270 30 8,100 $1.12
$9,069
$9,069



Discount Prices on Solar Panels
Model
Watts Minimum Quantity Price Per Watt Price
305 1 $0.93
$285
$285
275 1 $1.07
$295
$295
270 1 $1.13
$305
$305
Topoint 190 watt mono 190 1 $0.90
$171
$171
See all of our solar panels.


SolarWorld Gridtie Systems
275 Watt Panels
SolarEdge Gridtie Systems with Astronergy Solar Panels
Helios Solar Panels
 

SolarEdge Gridtie Solar Systems with SolarWorld Solar Panels
These SolarWorld Gridtie Solar Systems feature the SolarEdge platform—a revolutionary way of maximizing the sun’s power using SolarEdge P300 PowerBoxes. SolarEdge PowerBox optimizers are paired up with SolarWorld solar panels and strung to ETL listed SolarEdge inverters.

SolarEdge Gridtie Systems with Astronergy Solar Panels
SolarEdge Learn About SolarEdge
SolarEdge Gridtie System Array Size Watts
STC / PTC [1]
Racking [2] Monthly Output based on 5 sun hours per day [3] # of Solar
Panels
SolarEdge
Inverter
Product
Number
Price [4]
2,750/2,470 Included up to 371 kWh 10 1 Solaredge 5.0K 1891200
$5,810
$5,810
4,125/3,705 Included up to 556 kWh 15 1 Solaredge 5.0K 1891205
$7,785
$7,785
5,500/4,940 Included up to 741 kWh 20 1 Solaredge 5.0K 1891210
$10,093
$10,093
6,600/5,928 Included up to 889 kWh 24 1 Solaredge 6.0K 1891215
$11,643
$11,643
8,250/7,410 Included up to 1,112 kWh 30 1 Solaredge 10.0K 1891220
$14,363
$14,363
9,900/8,892 Included up to 1,334 kWh 36 1 Solaredge 10.0K 1891221
$16,673
$16,673
11,000/9,880 Included up to 1,482 kWh 40 2 Solaredge 6.0K 1891225
$19,639
$19,639
13,750/12,350 Included up to 1,853 kWh 50 2 Solaredge 6.0K 1891230
$23,109
$23,109
16,500/14,820 Included up to 2,223 kWh 60 2 Solaredge 10.0K 1891235
$28,259
$28,259
19,800/17,784 Included up to 2,668 kWh 72 2 Solaredge 10.0K 1891222
$33,239
$33,239
22,000/19,760 Included up to 2,964 kWh 80 3 SE6000A-US 1891240
$36,535
$36,535

1. STC is Standard Test conditions or factory ratings. PTC is PV-USA Test Ratings which are closer to real world conditions. Your unique conditions will affect your system output. Read more...
2. Roof racking is currently about $75 per panel.
3. What is a kilowatt hour (kWh) and how to find it on your power bill.
4. Please be aware that these prices may change daily. Call for current pricing: 1 (800) 472-1142.

**Roof racking is currently about $75 per panel.
Enphase Starter Solar Kits
enphase energy micro-inverter home solar power system Astronergy Solar

Enphase Starter Kits
Astronergy Solar Micro Inverter Grid-tie System

The Enphase Starter Kits are the perfect way to get started with solar. It includes up to four Astronergy solar panels and four M215 Enphase Microinverters. These systems also include IronRidge XRL mounting equipment! Since it's an expandable system, you can add one solar panel and one microinverter at a time. Find out more. Give us a call at (800) 472-1142 or email us at

Enphase Energy Starter Kits with Astronergy Solar panels
Micro-inverter Grid-tie System Array Size Watts
STC / PTC [1]
Racking [2] Monthly Output based on 5 sun hours per day [3] # of Solar
Panels
SolarEdge
Inverter
Product
Number
Price [4]
Enphase 255W Single Panel DIY Starter Kit 255 Included up to 34 kWh 1 1 Enphase M215 - Micro-inverter 1890800
$1,007
$1,007
Enphase 510W DIY Starter Kit 510 Included up to 69 kWh 2 2 Enphase M215 - Micro-inverter 1890805
$1,445
$1,445
Enphase 765W DIY Starter Kit 765 Included up to 103 kWh 3 3 Enphase M215 - Micro-inverter 1890810
$2,095
$2,095
Enphase 1,020W DIY Starter Kit 1,020 Included up to 137 kWh 4 4 Enphase M215 - Micro-inverter 1890815
$2,520
$2,520

1. STC is Standard Test conditions or factory ratings. PTC is PV-USA Test Ratings which are closer to real world conditions. Your unique conditions will affect your system output. Read more...
2. Roof racking is included in these systems.
3. What is a kilowatt hour (kWh) and how to find it on your power bill.
4. Please be aware that these prices may change daily. Call for current pricing: 1 (800) 472-1142.

Complete Enphase grid tie solar systems



Grid-tie Solar Systems with Emergency Battery Backup
Equipped with OutBack Power's Radian inverters, these solar power grid-tie systems will power 120-volt and 240-volt circuits. Designed with true off-grid capability, you can charge your battery bank with solar panels or a gas generator. These systems also have a "grid-assist mode" for folks mainly interested in being off the grid, but would like to have access to grid power.

Call a Wholesale Solar technician for help sizing these systems and choosing the correct battery bank size.
Solar Power System Array Size(Watts) Output Monthly Output based on 5 sun hours per day # of Solar
Panels
# of Batteries Product
Number
*Price
With Astronergy Solar Panels
5,355 120/240 up to 727.34 kWh 21 See Options 1890620
$15,816
$15,816

6,120 120/240 up to 831.24 kWh 24 See Options 1890625
$16,676
$16,676

7,650 120/240 up to 1,039.05 kWh 30 See Options 1890630
$18,200
$18,200

With American Made SolarWorld Solar Panels
American Flag 6,240 120/240 up to 846.36 kWh 24 See Options 1891000
$18,460
$18,460

American Flag 7,800 120/240 up to 1,057.95 kWh 30 See Options 1891005
$19,440
$19,440

**Prices do not include battery banks, shipping, installation or applicable taxes and may change daily. Current pricing: 1 (800) 472-1142.
Complete grid tie with battery backup systems


SolarWorld AC Offgrid Solar Power Systems with SolarWorld Solar Panels American Flag
OffGrid AC Solar Power System Array Size(Watts) Monthly Output based on 5 sun hours per day Racks # of Solar
Panels
Batteries Product
Number
*Price
1,100 up to 148 kWh Not Included** 4 SolarWorld 275-watt Not included 1891345
$6,407
$6,407

1,650 up to 222 kWh Not Included** 6 SolarWorld 275-watt Not included 1891350
$7,473
$7,473

2,475 up to 333 kWh Not Included** 9 SolarWorld 275-watt Not included 1891335
$8,159
$8,159

3,300 up to 445 kWh Not Included** 12 SolarWorld 275-watt Not included 1891340
$9,233
$9,233

4,125 up to 556 kWh Not Included** 15 SolarWorld 275-watt Not included 1891300
$10,255
$10,255

4,950 up to 667 kWh Not Included** 18 SolarWorld 275-watt
Not included 1891330
$15,925
$15,925

6,600 up to 889 kWh Not Included** 24 SolarWorld 275-watt Not included 1891305
$17,819
$17,819
Workshop Off-grid 2 - Pallet Special!
8,250 up to 1,112 kWh Not Included** 30 SolarWorld 275-watt Not included 1891310
$19,027
$19,027
9,900 up to 1,334 kWh Not Included** 36 SolarWorld 275-watt Not included 1891315
$22,750
$22,750
12,375 up to 1,667 kWh Not Included** 45 SolarWorld 275-watt Not included 1891320
$29,119
$29,119
14,850 up to 2,001 kWh Not Included** 54 SolarWorld 275-watt Not included 1891325
$31,875
$31,875
*Prices do not include shipping, installation or applicable taxes and may change daily. Current pricing: 1 (800) 472-1142. **Roof racking is currently about $75 per panel.


Have you come to this site seeking information About Solar Panels? Solar technology? Photovoltaics? (PDF)

What follows is basic history about solar panels and information to help you know what solar panels to buy.

Solar Panels: Harvesting the Energy from our Sun
Virtually unlimited power is available from our nearest star, the Sun. In just one hour, our planet receives more energy from the sun than the entire world uses during an entire year. Electricity-producing solar panels have only been around for the last 60 years, yet they have completely transformed how we harness solar energy

In 1839, a nineteen year-old French physicist named Alexandre-Edmond Becquerel discovered the operating principle of the solar cell, known as the photovoltaic effect. It wasn’t until 1876 that this effect materialized into a viable method of producing electricity with the work of William Grylls Adams. He discovered that by illuminating a junction between selenium and platinum, a photovoltaic effect occurs; electricity could now be produced without moving parts.

Revolutionary as they may have been, the selenium solar cells were not efficient enough to power electrical equipment. That ability occurred in 1953 when a Bell Laboratories employee Gerald Pearson had the bright idea of making a solar cell with silicon instead of selenium. The New York Times heralded the discovery as “The beginning of a new era, leading eventually to the realization of harnessing the almost limitless energy of the sun for the uses of civilization”.

Just in time for the space race, the first solar panels made their debut in the satellite industry. Vanguard I, the first solar-powered satellite celebrated its 53rd birthday this year, setting mileage records and holding the title of being the oldest artificial satellite still in orbit.

The first solar modules were only efficient enough for space applications, where the Sun’s radiation is much stronger. Eventually satellite research paved the way for Earth-based technology. The 1990’s were pivotal years for photovoltaic technology. Innovations in solar cells allowed for greater efficiency while lowering the cost of production. Germany and Japan led the way with long-term solar power incentive programs helping lower the cost to the public, and spurring the growth of a robust Photovoltaic industry in both countries.

California Leads the Nation
In 2006, California made a major long-term commitment to solar power by passing the California Solar Initiative, a ten-year incentive program with the goal of installing 3,000 megawatts of solar panels on the equivalent of one million rooftops. California leads the nation in solar panel installations, as it currently has more photovoltaic systems installed than any other state. This incredible boom has taken place mostly due to California’s Renewable Portfolio Standard, which requires that 20 percent of the state’s electricity come from renewable resources by 2010. In 2008 the state decided that it was not moving fast enough in meeting these goals and enacted a feed-in tariff, requiring utility companies to buy back excess power produced by homeowner’s and private photovoltaic installations. In the same year, the state also raised the Renewable Portfolio Standard to 33 percent by 2020, greatly helping spur growth in the renewable energy industry.

How Solar Panels work
Photovoltaic solar modules are composed of multiple, interconnected solar cells, which effectively trap photon energy between layers of silicon wafers. Negatively charged electrons are then knocked loose from their atoms, allowing them to flow freely through the semiconductors. Separate diodes, and P-N junctions prevent reverse currents and reduce loss of power on partially shaded panels.

Since the flow of electrical current is going in one direction, like a battery, the electricity generated is called direct current (DC). Sunlight conversion rates are typically in the 5 to 18 percent range, with some laboratory experiments reaching efficiencies as high as 30 percent. Future possibilities include the development of multi-junction solar cells that are capable of harnessing a wider bandwidth of useable light. We are still considered to be in the “early” stages of solar cell technology.

Solar Panel Components
Photovoltaic solar panels are the main building block in a solar power system. Since each solar module produces a limited amount of power, installations usually consist of multiple panels, called an array. The array produces DC (direct current), which can be stored in batteries or instantly converted into AC (alternating current) required by conventional appliances.

Equipment that converts the power from DC to AC is known as an solar inverter, and they come in a few varieties, modified sine wave or pure sine wave. They are further classified based on which type of system it is to be used in, whether it is off-grid or grid interconnected. Recently the innovation of micro inverters has greatly simplified installations, and makes it easy to add on panels to an installation. Each solar module is paired with its own micro inverter, which then coverts the power directly at the panel. For off grid installations the use of a charge controller is necessary to properly manage the power harvest, charge the batteries, and prevent overcharging.

The greatest innovation in charge controllers would have to be the relatively new feature called maximum power point tracking (MPPT). This innovative method of charging batteries constantly monitors peak power voltage from the array and input voltage on the batteries adjusting amperage to compensate for the fluctuations. This provides the most efficient means to manage the power harvest. The function of MPPT charge controllers is analogous to the transmission of a car, keeping your charging system in the “right gear”. Other components of the solar system would include the wiring and mounting hardware, while some installations use a tracker that changes its tilt angle and direction throughout the day.

Types of Solar Panels
Solar panels are classified into three classes: mono-crystalline (single crystal), poly-crystalline (multiple crystals), or amorphous silicon. Mono-crystalline is indicative of the continuous and unbroken sample of silicon in which the cell is manufactured from. This method uses very pure silicon grown in a complex growth process, and then sliced into wafers that compose the individual cells. This was the first method used to manufacture solar cells, and are still highly regarded for their efficiency ratios.

Poly-crystalline panels are composed of many crystallites of varying size and orientation. These multi-crystalline panels are generally less expensive and slightly less efficient than mono-crystalline modules, yet lately the difference in efficiency is very small. Like their mono-crystalline counterpart, the cells are also cut into wafers that make up the individual cells of a solar panel.

Amorphous solar panels use the non-crystalline, allotropic form of silicon, in which a thin layer of this silicon substrate is applied to the back of a plate of glass. These panels are much cheaper and less energy efficient, yet they are more versatile in how they can be used. For example, amorphous solar panels can be manufactured into long sheets of roofing material. Thin Film solar panels also fall into the amorphous category. This type of cells can be mounted on a flexible backing, making them more suited for mobile applications.

Each of the solar panel types is estimated to last at least twenty-five years. Instead of stopping production completely, electricity production will decline a little, gradually, over decades. The longevity of a solar panel refers to the number of years before the unit starts producing only 80 percent of its original power rating. The industry standard for warranties is 20 to 25 years, although it is not uncommon for panels to produce adequate power for over 30 years.

Off Grid versus Grid tied
Solar panels are used extensively in rural areas, where access to the grid is non-existent or inaccessible. These installations are called off grid (or independent, stand-alone) solar power systems, and require the use of batteries to store the energy for use at night or on long stretches of overcast weather. The energy stored in the batteries leaves the batteries as DC electricity which can power DC appliances (as in RV’s) or be converted to alternating current (AC) for use with conventional appliances. Much like running your own mini utility company, this method gives you full independence from the national grid.

You can eliminate the cost of batteries by going with a system that connects right into your home’s main junction box and use the grid as your power source at night or on long stretches of inclement weather. These installations are known as grid-tied or grid-interconnected systems. This version of solar system enables you to sell any excess power you produce back to the utility companies who have chosen to support “net metering”. Once you are signed up on a net metering program, your utility company will have a smart meter installed known as a Time of Use Meter, which will actually run backwards when you are producing excess power. It is wise to keep in mind that Grid tied systems without a battery backup, are only functional when the grid is operational. Due to anti-islanding features on grid tied inverters, which protect utility workers from working on a live line, grid-tied systems without a battery back up will not continue to produce power during a power outage regardless of whether you have sunshine or not.

Since solar panels produce DC, or direct current, they must be coupled with a solar inverter to convert the energy from DC to AC, or alternating current. In a grid tied system this can be done by a large central inverter, or each solar panel can be outfitted with its own micro inverter. Once the power is converted to alternating current and its phase is synchronized with that of the grid, it is then tied in to your main junction box, which is ultimately interconnected to the national grid.

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All Products Index
AC Coupling
Back-up Power
Batteries
Battery Enclosures
Cables
    -Wiring
    -MC Connectors
Charge Controllers
Commercial Solar
Disconnects
    - Breakers
    - Fuses
Grid-Tied Power Systems
Grid-Tied Battery Backup
Grid-Assisted Power
    Systems
Off Grid Power Systems
Inverters
Inverter Repair
Meters
Package Systems
Pre-Wired Power Centers
Racking and Mounts
RV & Marine Power
Solar Lights
Solar Panels
Solar Panels by the Pallet
Solar Panel Trackers
Wind Generators/
     -Wind Turbines
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