PARALEX Rooftop PV system to provide high yield, low voltage solar power to Municipal Buildings in Seville Spain
Sustainable Energy Technologies announced today that ISTEM will use the PARALEX operating system to power a demonstration of rooftop solar PV on schools, community centers and fire stations in Seville Spain. ISTEM is a subsidiary of Copcisa Industrial SLU based in Barcelona Spain. Commissioned by the City Hall of Seville, the "Photovoltaics Roof Project" will install 15 kW rooftop solar power systems on 10 municipal buildings throughout the city. The projects, which are being installed by ISTEM, are scheduled for grid connection in Q1, 2010.
The inherent safety of low solar PV system operating voltages was an important consideration in the selection of the PARALEX operating system architecture. "Low Voltage PV systems are safer and more reliable. Municipal buildings like the ones we are supplying in Seville, which include schools, fire halls, social centers and other publicly owned and operated structures require a special level of safety," said Carlos Alba, Director of Copcisa Industrial and CEO of ISTEM. "The PARALEX system will be operating at less than 135 volts, which means it is safe: safe for children, safe for those who work in these buildings, and, god forbid, safe for firemen should an emergency situation occur."
"We believe that the public segment of the Spanish PV market will be a strong one going forward and we are very happy to be able offer this differentiated and safe solution to the market," Alba added. Conventional solar PV system architectures require high system operating voltages in order to achieve high conversion efficiencies. With high operating voltages (300v – 600v), there is a risk of serious injury in the case of accidental encounters with a live system. The PARALEX operating system enables household level extra low operating voltages to eliminate this risk without sacrificing conversion efficiencies. It is ideal for all applications where public safety is a concern – schools, public buildings, shopping centers, recreational areas etc.
"Seville's Photovoltaics Roof Project demonstrates a growing demand for solar power to meet public energy requirements. Sustainable Energy's PARALEX operating system meets this demand and is the perfect fit for municipal projects since it has an inherently safe, low voltage design that addresses concerns of public safety and liability critical for public buildings," said Robert Bucher, President & CEO of Sustainable Energy. "We are pleased to be working with ISTEM to help the city of Seville become a leader in sustainable energy."
PARALEX is a solar power system architecture enabling solar modules to be wired in a parallel array. Using Sustainable Energy's patented inverter technology, the PARALEX architecture enables each solar module to operate independently of any other module in the system delivering 5-15% increased energy yield, without the expensive hardware and continuing maintenance cost of micro-inverter products. Every module delivers its maximum power potential while eliminating the string inverter impact of shading, soiling and other real world factors.