Seilar Photovoltaic Power

Photovoltaic (PV) devices generate electricity directly from sunlight via an electronic process that occurs naturally in certain types of material, called semiconductors. Electrons in these materials are freed by solar energy and can be induced to travel through an electrical circuit, powering electrical devices or sending electricity to the grid.

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PV devices can be used to power anything from small electronics such as calculators and road signs up to homes and large commercial businesses. Photons strike and ionize semiconductor material on the solar panel, causing outer electrons to break free of their atomic bonds. Due to the semiconductor structure, the electrons are forced in one direction creating a flow of electrical current. Solar cells are not 100% efficient in Diagram of a typical crystalline silicon solar cell. Solar cells are not 100% efficient in part because some of the light spectrum is reflected, some is too weak to create electricity (infrared) and some (ultraviolet) creates heat energy instead of electricity.

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Other Types of Photovoltaic Technology

In addition to crystalline silicon (c-Si), there are two other main types of PV technology:

  • Thin-film PV is a fast-growing but small part of the commercial solar market. Many thin-film firms are start-ups developing experimental technologies. They are generally less efficient – but often cheaper – than c-Si modules.
  • In the Australia, concentrating PV arrays are found primarily in the desert Southwest. They use lenses and mirrors to reflect concentrated solar energy onto high-efficiency cells. They require direct sunlight and tracking systems to be most effective.

Costs of Solar Photovoltaics

Rapidly falling prices have made solar more affordable than ever. The average price of a completed PV system has dropped by 33 percent since the beginning of 2011.

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The cost of PV has dropped dramatically as the industry has scaled up manufacturing and incrementally improved the technology with new materials. Installation costs have come down too with more expereinced and trained installers. However, the Australia. still remains behind other nations that have stronger national policies to shift energy use from fossil fuels to solar. Globally, the Australia is the fourth largest market for PV installations behind world leaders Germany, Japan and Spain.

Most modern solar cells are made from either crystalline silicon or thin-film semiconductor material. Silicon cells are more efficient at converting sunlight to electricity, but generally have higher manufacturing costs. Thin-film materials typically have lower efficiencies, but can be simpler and less costly to manufacture. A specialized category of solar cells – called multi-junction or tandem cells – are used in applications requiring very low weight and very high efficiencies, such as satellites and military applications. All types of PV systems are widely used today in a variety of applications.

COMMERCIAL

We are your commercial solar energy experts. Our team offer an experienced solar consultation service to assess your businesses energy use, before discussing options to decrease your energy costs and carbon footprint.

We can save you thousands of dollars each year on traditional grid power connection, making the transition to solar energy a long-term and extremely attractive investment. Your company could also be eligible for solar credits paid in the form of a cash rebate.

We offer consultation services and supply high quality solar energy systems for both small and large-scale businesses. Our commercial products include: hot water systems, solar photovoltaic (PV) systems, skylights and solar air-conditioning.

We can supply on or off the grid custom-designed energy solutions, tailored individually for your business. We can also arrange complete financing for your project so that your company enjoys lower electricity bills and ownership of the power saving assets.