Solar Panels

Photovoltaic (PV) is the term related to the conversion of light into electricity using semiconducting materials that exhibit the photovoltaic effect. A typical use of this technology is solar panels which comprise of solar cells that generate solar power. They can be installed on south-facing roofs, walls or on the ground, and can be fixed or have a solar tracker that follows the sun across the sky. The installation of solar panels is highly beneficial for both private and commercial users as the solar energy turned into electricity can be sold to the energy supplier. The feed-in tariff can reduce energy bills and cost of solar panel installation.



The advantage of this type of energy source is that it is clean energy, so generates no pollution and no greenhouse gas emissions. It is however dependent on direct sunlight so around 10% to 25% is lost when a tracking system is not used.




How Does a Solar Panel Work?


The solar cells within a solar panel produce direct current electricity from sunlight. The solar panels consist of several solar cells which contain layers of photovoltaic material, usually silicon. When sunlight shines on the cells they create an electric field across the layers. The more sunlight there is, the more electricity is produced.
Solar inverters are then used to change the electric current from DC to AC. The electricity is then sent using copper solar cables which connect modules, arrays, and subfields.



What are typical applications of solar panels?


Most photovoltaic solar panels are used for grid-connected power generation, however, they can also be used on:



  • Boats

  • Roadside emergency telephones

  • Electric cars



How much energy can solar panels generate?


Photovoltaic solar panels can often be seen on the rooftops of houses. Typically, residential rooftop systems generate around 5 kWh to 10 kWh of energy whereas commercial rooftop systems can generate several hundred kilowatts. Rural villages in developing countries which do not have access to grid power are also using solar panels to create solar farms.


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Description Price Power Rating Open Circuit Voltage Number of Cells Battery Bank Capacity Peak Power Type Efficiency Dimensions Depth Length Maximum Temperature Minimum Temperature Width Mounting Style
RS Stock No. 914-8445
BrandRS PRO
HK$478.30
Each
units
5W 21.6V - - - Solar Panel Kit - 250 x 240 x 3mm 3mm 240mm +80 -40 250mm -
RS Stock No. 904-6153
BrandRS PRO
HK$748.166
Each (In a Pack of 5)
units
20W 21.6V 36 10Ah 60W Polycrystalline 17% 505 x 345 x 3mm 3mm 505mm +80°C -40°C 345mm Surface Mount
RS Stock No. 914-8457
BrandRS PRO
HK$1,012.40
Each
units
20W 21.6V - - - Polycrystalline - 505 x 345 x 3mm 3mm 505mm +80°C -40°C 345mm Wall Mount
RS Stock No. 904-6147
BrandRS PRO
HK$2,591.065
Each (In a Pack of 2)
units
120W 22V - 10Ah 600W Polycrystalline 17% 1250 x 670 x 35mm 35mm 1.25m +85°C -40°C 670mm Surface Mount
RS Stock No. 760-0225
Mfr. Part No.AM-1820CA
BrandPanasonic
HK$37.68
Each
units
- - - - - - - - - - - - - -
RS Stock No. 111-1033
Mfr. Part No.STP005P
BrandPV Logic
HK$291.12
Each
units
- 22V - 35Ah 5W Polycrystalline - 250 x 200 x 25mm 25mm 250mm +85°C -40°C 200mm Wall Mount
RS Stock No. 664-6797
Mfr. Part No.AM-5605CAR
BrandSanyo
HK$176.86
Each
units
401mW 5.1V - - - Amorphous Solar Cell - 117.8 x 62.3 x 2.3mm 2.3mm 117.8mm +60°C -10°C 62.3mm -
RS Stock No. 188-1242
Mfr. Part No.310292
BrandPhaesun
HK$2,764.35
Each
units
110W - 32 - 110W - 20% 1037 x 527 x 35mm 35mm 1.037m - - 527mm -
RS Stock No. 760-0278
Mfr. Part No.AT-7963A
BrandPanasonic
HK$687.15
Each
units
- - - - - - - - - - - - - -
RS Stock No. 188-1230
Mfr. Part No.310168
BrandPhaesun
HK$530.14
Each
units
20W - 36 - 20W - - 455 x 380 x 34mm 34mm 455mm - - 380mm -
RS Stock No. 664-6841
Mfr. Part No.AT-7665A
BrandSanyo
HK$215.64
Each
units
125mW 4.7V - - - Amorphous Solar Cell - 58.4 x 56 x 0.4mm 0.4mm 58.4mm +60°C -10°C 56mm -
RS Stock No. 111-1034
Mfr. Part No.STP010P
BrandPV Logic
HK$435.04
Each
units
- 22V - 70Ah 10W Polycrystalline - 397 x 280 x 25mm 25mm 397mm +85°C -40°C 280mm Wall Mount
RS Stock No. 664-6788
Mfr. Part No.AM-5412CAR
BrandSanyo
HK$61.55
Each
units
93mW 3.4V - - - Amorphous Solar Cell - 50.1 x 33.1 x 2.3mm 2.3mm 50.1mm +60°C -10°C 33.1mm -
RS Stock No. 760-0240
Mfr. Part No.AM-5814CAR
BrandPanasonic
HK$149.98
Each
units
- - - - - - - - - - - - - -
RS Stock No. 188-1232
Mfr. Part No.310200
BrandPhaesun
HK$780.67
Each
units
50W - 36 - 50W - - 650 x 505 x 35mm 35mm 650mm - - 505mm -
RS Stock No. 188-1243
Mfr. Part No.310289
BrandPhaesun
HK$2,633.06
Each
units
100W - 30 - 100W - 20% 1302 x 416 x 35mm 35mm 1.302m - - 416mm -
RS Stock No. 914-8460
BrandRS PRO
HK$2,780.85
Each
units
80W 21.6V - - - Polycrystalline - 885 x 665 x 3mm 3mm 885mm +80°C -40°C 665mm Wall Mount
RS Stock No. 188-1238
Mfr. Part No.310269
BrandPhaesun
HK$2,784.94
Each
units
200W - 72 - 200W - - 1580 x 808 x 40mm 40mm 1.58m - - 808mm -
RS Stock No. 188-1246
Mfr. Part No.310294
BrandPhaesun
HK$4,367.56
Each
units
160W - 72 x 2 - 160W - 20% 1082 x 796 x 35mm 35mm 1.082m - - 796mm -
RS Stock No. 664-6826
Mfr. Part No.AM-5904CAR
BrandSanyo
HK$54.34
Each
units
52mW 7.7V - - - Amorphous Solar Cell - 40.1 x 33.1 x 2.3mm 2.3mm 40.1mm +60°C -10°C 33.1mm -