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Thursday, 17 March 2016 13:34

Stellenbosch Study Confirms Suitability of First Solar’s PV modules in South Africa

An independent review has validated the suitability of thin film Cadmium Telluride (CdTe) photovoltaic (PV) modules to power utility-scale solar power plants in South Africa. The study, commissioned by First Solar, Inc. and undertaken by Stellenbosch University’s Centre for Renewable and Sustainable Energy Studies (CRSES), concluded that the modules “are a technically feasible, environmentally friendly and safe way to produce electricity in South Africa.”

The in-depth assessment - based on an extensive review of scientific literature, interaction with experts and site visits – considered performance of CdTe PV under South African conditions, product safety, and environmental impacts. The study’s conclusions are in line with the findings of over a dozen similar reviews conducted by leading academic and research institutions around the world that First Solar’s CdTe technology does not pose any adverse environmental risks.

The review also provides comment on various aspects such as the sourcing of raw materials used in the semi-conductor compound, the manufacturing process, product applications and end-of-life disposal of PV modules. As part of the comprehensive study, a CRSES team led by Dr. Arnold Rix, Scatec Solar Chair in Photovoltaic Systems at Stellenbosch University, also visited First Solar’s manufacturing facility in Perrysburg, Ohio, to review safety, industrial hygiene and occupational health procedures.

Significantly, the report reaffirms that First Solar’s thin film modules are well suited to environmental conditions in South Africa, and can deliver a higher energy yield than both, mono- and multi-crystalline silicon PV panels in warm climate conditions. The report also states that, “manufacturing modules from CdTe should be regarded as a responsible and safe way to beneficially utilize a by-product of industrial processes,” and goes on to confirm that “during normal operations CdTe modules emit no pollutants to the air, water or soil.”

Examining the lifecycle impact of various PV technologies, the report notes that “CdTe modules have the least amount of harmful air emissions and have the lowest carbon footprint when compared to CIGS (Copper Indium Gallium Selenide) and cost-competitive multi-Si (Silicon) systems.” It goes on to point out that First Solar’s thin film PV modules have a shorter energy payback time of 0.68 years, when compared to other PV technologies such as multi-crystalline silicon panels, which can take as much as 1.23 years to recover the energy expended in the manufacturing process. “The energy intensive nature of silicon purification and ingot growing is the primary reason for the higher carbon footprint and energy payback period associated with crystalline silicon PV technologies,” the report notes.
“With this report, Stellenbosch University joins a group of high-profile academic institutions, from Brazil to Japan, which have ratified the fact that First Solar’s thin film modules are the most environmentally sustainable, offering unparalleled energy payback times and overall eco-efficiency. It is also clear that First Solar modules aren’t just environmentally safe, but can also deliver more energy than both mono- and multi-crystalline silicon modules in hot climates,” said Nasim Khan, First Solar’s Vice President for Business Development in Africa.  

With over 10,000MW installed worldwide, First Solar is a global leader in providing comprehensive PV solar systems powered by its advanced thin film modules. The company’s global footprint includes two manufacturing facilities in the United States and Malaysia. Its regional headquarters for Africa are located in Cape Town, South Africa.
About First Solar, Inc.

First Solar is a leading global provider of comprehensive photovoltaic (PV) solar systems which use its advanced module and system technology. The company’s integrated power plant solutions deliver an economically attractive alternative to fossil-fuel electricity generation today. From raw material sourcing through end-of-life module recycling, First Solar’s renewable energy systems protect and enhance the environment. For more information about First Solar, please visit www.firstsolar.com.

For First Solar Investors
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