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Environmental Benefits of OPV
Traditional Solar Panels – require huge amount of energy in-put and uses many toxic gases and hazardous chemicals to manufacture; some contain a cocktail of arsenic, cadmium and titanium, and therefore creates a toxic legacy at both the manufacturing and disposal stages; traditional solar panels (c-silicon) utilise the same energy in manufacture as they generate in their first ten years in solar conversion.

OPV panels use the lowest carbon footprint of all solar panels; they are biodegradable and hence pose no threat to the environment. We manufacture on a roll-to-toll printing press. With this method we can mass produce OPV and use less energy to manufacture them. As well as this OPV as it is organic can be recycled.

Economic Benefits of OPV
Traditional Solar Panels – expensive due to high production costs and the high price of silicon; they are heavy and thus roofing systems require reinforcing to carry the extra loads, particularly under wind loads. Generally affixed with large metal brackets, and because of the heat generated by the PV panels themselves, have to be mounted high above the basic roofing material – thus increasing the installation costs. The cost of traditional silicon in particular is likely to escalate due to both the cost of silicon and the increase in energy costs – or by way of carbon tax.

OPV panels – because of their roll-to-roll manufacturing process, OPV panels are considerably cheaper to produce; being lightweight and flexible, they can be bonded onto SKYShades’ special membranes and affixed to any roofing system with no impact on the integrity of the existing roof materials. The SKYShades’ solar membrane OPV products, when installed, create an insulation gap between the roof and the membrane. In addition, the sun’s rays are captured by the OPV panels, and along with the insulation gap means that the under-roof temperature inside the premises will be up to 13C degrees cooler, and hence offers a reduction in air-conditioning requirements. A saving in energy at the same time as generating energy! Furthermore, the SKYShades’ membranes are warranted for 15 years whilst the OPV panels inserted into the membranes may be replaced every 3-4 years (at less cost) to utilize increased efficiency of energy generation. Hence the panels themselves may be leased for this shorter period rather than purchased outright. This will impact on the IRR’s and will demonstrate that the SKYShades solar membranes have a considerably shorter pay-back time frame than traditional solar panels.

Installation Benefits of OPV
Traditional PV panels – because these panels have to be raised high above the roof for maximum efficiency, and because they require direct sunlight to generate power, traditional PV panels have to be configured so that they do not cast shadows over each other and intercept the direct sunlight. [Another limiting characteristic is that on cloudy days the power output is negligible.] In addition, to gain maximum power, these panels have to be installed to face the south. For all these reasons, the roof area to be utilized for solar conversion is extremely constrained.

OPV panels – generate power from light from any direction and of any intensity. Hence they are not restricted by cloud, shadow or the angle of the direct sun. The efficiency of OPV panels is relatively constant during the day. Being lightweight and flexible, OPV panels are bonded onto SKYShades’ membranes and could be installed over the entire roof structures on a multitude of premises.
Power Output Benefits of OPV; Now and Future

Traditional PV panels – the efficiency of solar conversion can never be greater than on the day of installation. In fact, these PV panels degrade at the rate of 1%(approx) per year; thus in twenty years there will be a diminution of power output of typically 20%.

OPV panels – on the other hand, bonded onto SKYShades’ membranes allows for regular replacement of existing OPV panels with higher efficient panels produced by Konarka’s scientists at their Lowell Mass. plant. [In the past two years, this efficiency has grown from 2.2% to 6.4% in early 2009].Hence over the next twenty year period, SKYShades’ OPV solar membranes will register an estimated 500% increase in ‘clean’ ‘green’ energy output.

Future Proofing benefits of OPV and SKYShades

• Because it is new ground breaking technology the energy outputs are constantly being upgraded as the delivery and energy output improves
• Konarka state minimum 30% increase in efficiency each year for the next 5 years
• Konarka work off the 5% efficiency table in all countries
• Konarka are now producing OPV is massive quantities
• SKYShades have developed a sleeve technique for our canopies to allow replacement of the film every 2-3 years as energy output increases.
• Most businesses will prefer to “lease” the package instead of an upfront payment. This lease can then be renewed as future OPV panels are replaced.
• The film can be therefore be replaced without changing the roofing structure – this is a definite competitive advantage for Sky Shades 
  

Summary - OPV thin plastic is not to be compared with PV - it is a very different technology. OPV is now being referred to as the 3rd generation in solar (PV is 2nd generation )
http://www.skyshades.co.uk/opv-vs-silicon-solar-cells.html

• Solution-processed organic solar cells from near-IR absorbing phthalocyanines have been reported but their wavelength coverage only extends to 800 nm this material extends to 1 micron in the IR; 
  

• High photoconductivity;
  

• High third order non-linear susceptibility;
  

• Unlike vacuum-deposition, which is still the predominant mode of film deposition, solution-processable chromophores can deposit thin-films over large areas using techniques such as reel-to-reel wet coating, ink-jet printing, and spin-coating.

Status: The best devices constructed so far from organic materials are those based on poly(3-hexylthiophene)/phenyl-C61-butyric acid methyl ester (P3HT/PCBM) systems, which are transparent in the near-IR region. More recently, low band gap polymers in combination with PC70BM have exceeded 8% power conversion efficiencies, which still do not have appreciable absorbance above 750-800 nm. 
http://www.ibridgenetwork.org/arizona/organic-solar-cells-based-on-a-solution-phase-near-ir-absorbi

Direct light consists of radiation that comes straight from the sun, without reflecting off of clouds, dust, the ground, or other objects. Scientists also talk about direct-normal radiation, referring to the portion of sunlight that comes directly from the sun and strikes the plane of a PV module at a 90-degree angle. http://www1.eere.energy.gov/solar/pv_cell_light.html