Commercial Solar Panels
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 Solar Sun Ring Solar Cover For Swimming Pool Heating $17.87 Time Remaining: 28d 22h 42m Buy It Now for only: $17.87 |
 Solar Powered Motion Activated LED Security Flood Light eLEDing Pure Digital $22.50 (11 Bids) Time Remaining: 1d 1h 22m Buy It Now for only: $39.00 |
 Solar Sun Rings Pool Heater Thermal Blanket 6 PacK $106.99 Time Remaining: 7d 5h 29m Buy It Now for only: $106.99 |
 Solar Powered Motion Activated LED Security Flood Light eLEDing Pure Digital $12.50 (5 Bids) Time Remaining: 2d 6h 12m Buy It Now for only: $39.00 |
 Swimming Pool Solar Clear Water Powered Purifier Ionizer $249.99 Time Remaining: 29d 3h 49m Buy It Now for only: $249.99 |
 Solar Powered Motion Activated LED Security Flood Light eLEDing Pure Digital $49.99 Time Remaining: 9d 3h 52m Buy It Now for only: $49.99 |
 Solar Powered Motion Activated LED Security Flood Light eLEDing Pure Digital $99.00 (1 Bid) Time Remaining: 1d 1h 19m |
 Color Changing Floating Round Underwater LED Light Show Swimming Pool Spa Pond $2.99 Time Remaining: 7d 9h 30m Buy It Now for only: $2.99 |
 SMARTPOOL S601P SunHeater Solar Inground Heating System $217.95 (1 Bid) Time Remaining: 12h |
 PIR Infrared Motion Activated Sound Animal Repeller Detector for Rat Dog Cat $25.64 Time Remaining: 9d 11h 35m Buy It Now for only: $25.64 |
 6 Color Changing Floating Round Underwater LED Light Show Swimming Pool Spa Pond $10.99 Time Remaining: 16d 12h 22m Buy It Now for only: $10.99 |
 Solar Powered Motion Activated LED Security Flood Light eLEDing Pure Digital $102.60 (11 Bids) Time Remaining: 3d 1h 10m Buy It Now for only: $198.00 |
 16 NEW MOONRAYS 91391 Solar White LED Garden Outdoor Lawn Lights Lamp Bronze $63.99 Time Remaining: 15d 3h 6m Buy It Now for only: $63.99 |
 Professional Quality High Output Landscape Lighting Solar Spot Light $64.99 Time Remaining: 17d 1h 12m Buy It Now for only: $64.99 |
 4 Pack NEW MOONRAYS 91391 Solar White LED Garden Outdoor Lawn Lights Lamp Bronze $22.99 Time Remaining: 10h 16m |
 Annin Solar Light For Flagpoles New 2011 Model 100 lux $85.00 Time Remaining: 5d 1h 7m Buy It Now for only: $85.00 |
 Outdoor 80 LED Solar Motion Security Light Maxsa 40226 $87.95 Time Remaining: 10h 33m |
 108 LED Solar Powered Flood Light $159.99 Time Remaining: 16d 16h 2m Buy It Now for only: $159.99 |
 Solar Powered Motion Activated LED Security Flood Light eLEDing Pure Digital $199.00 Time Remaining: 13d 6h 49m Buy It Now for only: $199.00 |
 Solar Powered Motion Activated LED Security Flood Light eLEDing Pure Digital $99.00 Time Remaining: 2d 5h 57m |
 Mighty Mule FM200 Automatic Single Gate Opener Kit $187.24 Time Remaining: 7d 3h 57m Buy It Now for only: $187.24 |
 10pcs 3W High Power Bright Star LED Light Lamp Bulb Blue 80LM 470NM 120 deg New $11.59 Time Remaining: 1d 15h 22m Buy It Now for only: $11.59 |
 Solar Powered Motion Activated LED Security Flood Light eLEDing Pure Digital $55.00 (7 Bids) Time Remaining: 6d 3h 47m Buy It Now for only: $368.00 |
 Solar Sun Rings Pool Heater Thermal Blanket 10 PacK $179.99 Time Remaining: 7d 5h 29m Buy It Now for only: $179.99 |
 2 PACK WALL MOUNT Solar Spot Light Bright 4 Super Bright Spotlights FAST SHIP $34.40 Time Remaining: 1d 3h 44m |
 8 Panel Swimming Pool Solar Heating System 4x10 Panels For 18x36 Inground Pool $1,079.99 Time Remaining: 29d 2h 2m Buy It Now for only: $1,079.99 |
 Solar Powered Motion Activated LED Security Flood Light eLEDing Pure Digital $76.99 Time Remaining: 17d 4h 2m Buy It Now for only: $76.99 |
 Solar Powered Motion Activated LED Security Flood Light eLEDing Pure Digital $68.00 Time Remaining: 4d 1h 58m |
 Solar Powered Motion Activated LED Security Flood Light eLEDing Pure Digital $79.99 Time Remaining: 25d 7h 32m Buy It Now for only: $79.99 |
 Paradise GL23846BK 3 Pack Plastic Solar Panel 3 LED Spotlight Kit Black $29.99 Time Remaining: 27d 5h 14m Buy It Now for only: $29.99 |
 8 Pack NEW MOONRAYS 91391 Solar White LED Garden Outdoor Lawn Lights Lamp Bronze $36.99 Time Remaining: 3d 11h 19m Buy It Now for only: $41.95 |
 108 LED Solar Powered Flood Light $159.99 Time Remaining: 4d 16h 19m Buy It Now for only: $159.99 |
 LOT OF 4 BNIB COLOR CHANGING SSTEEL ACRYLIC LED SOLAR BUTTERFLY OUTDOOR LIGHTING $29.99 Time Remaining: 1d 10h 38m Buy It Now for only: $34.99 |
 Smartpool Above Ground Swimming Pool SOLAR ARC Pool Heater System $299.99 Time Remaining: 6d 4h 59m Buy It Now for only: $299.99 |
 16 NEW MOONRAYS 91354 Solar White LED Garden Outdoor Lawn Lights Lamp Stainless $80.99 Time Remaining: 15d 4h 30m Buy It Now for only: $80.99 |
 2 PACK WALL MOUNT Solar Spot Light Bright 4 Super Bright Spotlights FAST SHIP $34.40 Time Remaining: 3d 3h 59m |
 Waterproof 30cm Flexible Color Chang RGB Ribbon LED Light Strip 12V Multicolor $4.17 Time Remaining: 15d 4h 22m Buy It Now for only: $4.17 |
 New Solar Led Bulb Free Shipping $11.78 Time Remaining: 21d 16h 23m Buy It Now for only: $11.78 |
 8 Pack NEW MOONRAYS 91391 Solar White LED Garden Outdoor Lawn Lights Lamp Bronze $36.99 Time Remaining: 4d 11h 59m Buy It Now for only: $41.95 |
 SOLAR LED FLAG POLE LIGHT OUTDOOR SPOTLIGHT LIGHTING GARDEN YARD DECOR $14.95 Time Remaining: 10d 3h 45m Buy It Now for only: $14.95 |
 LOTOF4 BNIB COLOR CHANGING SSTEEL ACRYLIC LED SOLAR HUMMINGBIRD OUTDOOR LIGHTING $29.99 Time Remaining: 1d 23h 49m Buy It Now for only: $34.99 |
 Mighty Mule FM500 Automatic Single Gate Opener New $344.04 Time Remaining: 4d 23h 10m Buy It Now for only: $344.04 |
 Battery Operated LED Wind Chime Bell Flashing Home Room Night Light Decor Lamp $8.38 Time Remaining: 8d 3h 27m Buy It Now for only: $8.38 |
 8 Pack NEW MOONRAYS 91391 Solar White LED Garden Outdoor Lawn Lights Lamp Bronze $36.99 Time Remaining: 5d 9h 23m Buy It Now for only: $41.95 |
 SMARTPOOL S601P SunHeater Solar Inground Heating System $218.95 Time Remaining: 20d 25m Buy It Now for only: $218.95 |
 12 Color Changing Floating Round Underwater LED Light Show Swimming Pool Pond $19.99 Time Remaining: 16d 12h 22m Buy It Now for only: $19.99 |
 4 Pack NEW MOONRAYS 91391 Solar White LED Garden Outdoor Lawn Lights Lamp Bronze $22.99 Time Remaining: 5d 9h 49m Buy It Now for only: $26.95 |
 50 LED Patio Solar Powered Party Lighting Lights Xmas Free Shipping $19.99 Time Remaining: 16d 23h 31m Buy It Now for only: $19.99 |
 16 NEW MOONRAYS 91391 Solar White LED Garden Outdoor Lawn Lights Lamp Bronze $62.99 Time Remaining: 5d 10h 28m Buy It Now for only: $70.95 |
 Solar Powered Motion Activated LED Security Flood Light eLEDing Pure Digital $59.99 Time Remaining: 9d 8h 33m Buy It Now for only: $59.99 |
 Jandy Legacy LRZ250EP Electronic Ignition 250K Propane LP Swimming Pool Heater $1,449.99 Time Remaining: 5d 4h 59m Buy It Now for only: $1,449.99 |
 LOTOF4 BNIB COLOR CHANGING SSTEEL ACRYLIC LED SOLAR DRAGONFLY OUTDOOR LIGHTING $29.99 Time Remaining: 3d 10h 38m Buy It Now for only: $34.99 |
 7560k 280watt Solar Panels SMA Complete Kit Best Price System Ever $13,555.80 Time Remaining: 11d 10h 45m Buy It Now for only: $13,555.80 |
 Solar Powered Motion Activated LED Security Flood Light eLEDing Pure Digital $159.00 Time Remaining: 25d 8h 8m Buy It Now for only: $159.00 |
 LOTOF4 BNIB COLOR CHANGING SSTEEL ACRYLIC LED SOLAR HUMMINGBIRD OUTDOOR LIGHTING $29.99 Time Remaining: 3d 10h 38m Buy It Now for only: $34.99 |
 Solar Powered LED Flag Pole Light Outdoor Lighting Decor $22.95 Time Remaining: 10d 2h 18m Buy It Now for only: $22.95 |
 LOTOF4 BNIB COLOR CHANGING SSTEEL ACRYLIC LED SOLAR BUMBLEBEE OUTDOOR LIGHTING $29.99 Time Remaining: 3d 10h 38m Buy It Now for only: $34.99 |
 50 LED Patio Solar Powered Party Lighting Lights Xmas $18.99 Time Remaining: 13d 5h 40m Buy It Now for only: $18.99 |
 Smart Sensor Electronic Electromagnetic Cockroach Pest Bedbug Repeller EU plug $14.24 Time Remaining: 17d 7h 22m Buy It Now for only: $14.24 |
 LOT OF 4 BNIB COLOR CHANGING SSTEEL ACRYLIC LED SOLAR BUTTERFLY OUTDOOR LIGHTING $29.99 Time Remaining: 3d 10h 40m Buy It Now for only: $34.99 |
 16 LED Solar Power Lamp Outdoor Garden Path Wall Light Induction Sound Sensor $16.99 Time Remaining: 26d 11h 38m Buy It Now for only: $16.99 |
 4 Panel Swimming Pool Solar Heating System 4x10 Panels For 12x24 Inground Pool $559.99 Time Remaining: 29d 2h 1m Buy It Now for only: $559.99 |
 4 Pack NEW MOONRAYS 93004 Solar LED Garden Outdoor Lawn Lights Lamp Metal Steel $24.95 Time Remaining: 5d 12h 51m Buy It Now for only: $28.95 |
 Quoizel DE8961IB Imperial Bronze Transitional Single Light Down Lighting Large $339.99 Time Remaining: 17d 1h 41m Buy It Now for only: $339.99 |
 4 NEW MOONRAYS 91354 Solar White LED Garden Outdoor Lawn Lights Lamp Stainless $26.99 Time Remaining: 5d 12h 14m Buy It Now for only: $30.95 |
 Photocatalysis Mosquito Fly Pest Killer Light Zapper 3W $21.95 Time Remaining: 23d 22h 27m Buy It Now for only: $21.95 |
 Solar Powered Motion Activated LED Security Flood Light eLEDing Pure Digital $39.99 Time Remaining: 17d 3h 21m Buy It Now for only: $39.99 |
 Ultrasonic Sonic PIR Motion Activated Animal Repeller Detector for Rat Dog Cat $19.99 Time Remaining: 4d 11h 27m |
 47 kw Solar Panel SMA Inverter Complete PV Home System Kit Will pay the Tax $9,782.89 Time Remaining: 26d 27m Buy It Now for only: $9,782.89 |
 5pcs T5 Lamp Holder Lamp Socket Tube Accessory Lamp Aging Test AC 100 250V $4.27 Time Remaining: 26d 15h 29m Buy It Now for only: $4.27 |
 Annin Solar Light For Flagpoles New 2011 Model 100 lux $84.99 Time Remaining: 5d 5h 35m Buy It Now for only: $93.50 |
 4600W 20 Grid Tie Renogy 235w Solar call 1305 791 6202 FREE SHIPPING $5,888.00 Time Remaining: 29d 20h 50m Buy It Now for only: $5,888.00 |
 16 LED Solar Power Lamp Outdoor Garden Path Wall Light Induction Sound Sensor $10.50 (11 Bids) Time Remaining: 5d 24m |
 100 LED String Fairy Lights Christmas Wedding Favor Decor Lamps 10m 32m 110V $9.46 Time Remaining: 18d 20h 22m Buy It Now for only: $9.46 |
 8 Pack NEW MOONRAYS 91391 Solar White LED Garden Outdoor Lawn Lights Lamp Bronze $37.99 Time Remaining: 15d 3h 2m Buy It Now for only: $37.99 |
 Battery Operated LED Wind Chime Bell Flashing Home Room Night Light Decor Lamp $0.99 Time Remaining: 4d 10h 47m |
 Ultrasonic Electronic Anti Mosquito Insects Pests Bug Control Repellant Repeller $11.39 Time Remaining: 12d 22h 27m Buy It Now for only: $11.39 |
 10Pair 3W 3 Watt High Power White Warm White LED Light Lamp Bulb 30V 40V DC $18.99 Time Remaining: 2d 8h 33m Buy It Now for only: $18.99 |
 8 Pack NEW MOONRAYS 91391 Solar White LED Garden Outdoor Lawn Lights Lamp Bronze $36.99 Time Remaining: 6d 9h 56m Buy It Now for only: $41.95 |
 36 KW Sharp Solar Enphase M215 Micro inverter Solar Power System LOWEST PRICE $10,978.23 Time Remaining: 25d 5h 50m Buy It Now for only: $10,978.23 |
 110V 7W Submersible Water Pump Fountain Pond Aquarium US Plug 400L H $9.99 Time Remaining: 4d 11h 12m |
 2 Solar Powered LED Flag Pole Lights Outdoor Lighting Decor $34.95 Time Remaining: 10d 2h 17m Buy It Now for only: $34.95 |
 Hunter I Core IC 600PL Controller 6 to 30 Stations 120V 230V 240V Timer Clock $299.00 Time Remaining: 19d 8h 22m Buy It Now for only: $299.00 |
 New 100LEDs Xmas Party Outdoor Garden Solar Powered LED String Fairy Light Blue $10.01 (6 Bids) Time Remaining: 1d 20h 4m |
 Mighty Mule Tacoma Automatic Single gate Opener Package Gates Up To 18 ft Long $679.99 Time Remaining: 6d 15h 19m Buy It Now for only: $679.99 |
Instead of building huge solar energy plants in the desert...?
Why aren't we putting solar panels on top of houses and commercial buildings?! Wouldn't this make more sense?
Not really. At least, not until photovoltaic prices plummet some more!
You save a bit of money by not having to transport the power that far, but if you're in a building you either have to use the energy straight away, or store it in batteries (expensive), or put it back into the grid (so you're still getting grid inefficiencies).
The cheapest forms of solar power are concentrating solar power (CSP) and thin film photovoltaics. CSP can't really be done on rooftops*, and the two cheapest thin film technologies are not available for residential use yet (FirstSolar sell CdTe panels, but only on a commercial basis. Solyndra and NanoSolar are working on CIGS, but not many panels for sale yet). So residential panels tend to be silicon.
Larger plants also get economies of scale: you can build modules close together and save on wiring, make the most efficient use of inverters etc, which all save money.
In the UK it costs somewhere between £4,000-6,000 per kWp of residential solar power if you buy a 4kW system. Waldpolenz solar park in Germany used thin film cells and economies of scale to cost less than £3,000/kWp and this was before solar cell prices fell last year.
Finally, deserts are just much, much sunnier. In the Mojave desert, you can expect to generate about 2,200kWh per year per kW of installed solar power. On a Manchester rooftop you can expect about 750-900kWh.
So in summary: economies of scale and better tech means that larger solar parks sometimes work out at as little as half the price per unit of power compared to rooftops. And being in a desert more than halves the price again, relative to being on a rooftop in the UK. A 75%+ cost saving can justify extra transmission costs!
Ofc, in some areas it's economic to put solar cells on rooftops, and it'll become more useful as time goes on and prices fall. And there are the advantages of using power close to where it's generated and not taking up any extra land. So we will see solar power on rooftops becoming more and more important, but desert solar has big advantages.
