FACILITYMANAGEMENT
Costly awareness
The cost per kilowatt may be the metric that receives the most focus in any discussion of grid parity but there are many aspects that can help the continued reduction of the overall costs. S. Leu and A. Richter of Meyer Burger Technology discuss how technology development on wafer and cell module lines and PV systems continue to drive down total cost of ownership.
T
he main aim of the entire PV sector is to achieve grid parity – and to do so as quickly as possible. In the final analysis, only one figure is critical: namely the costs of the generated kWh ($/kWh). Basically the photovoltaic manufacturing process can be divided into two parts. A first part deals with the manufacture as far as the solar module and a second part deals with the application of a PV system.
Manufacturing
The first sub-area, manufacturing, is described by the Total Cost of Ownership (TCO) in principle, mainly by the figure of Euro/Wp and fundamentally follows two pertinent definitions such as
a). VDMA 34160: 2006-06 [1]; SEMI E35 (TCO for individual processes) [2]
b). SEMI E79 (Overall Equipment efficiency OEE for interlinked processes) [2] The TCO model was created mid 1980’s by Intel and the OEE model is created late 1960’s and published 1999 by SEMI E79.
Life Cycle Cost Of Energy PV application
The second part, the PV system, has been adequately described by the Balance of Systems (BOS) and the Performance Ratio (PR) during the durability of the PV system. BOS means Balance of systems and represents the non module cost as: assembly, installation, inverter, substructure and cabling of a PV system.
The performance ratio is defined by the term: Standard requirement
The application of LCOE can be implemented only with difficulty, because the performance of the PV system is measured in $/kWh whereas the
Both parts can be described by the figure of the life cycle costs of the entire system in $/kWh – from the manufacture of the solar module right up to the entire energy production generated in its life – as LCOE (Total Life Cycle Cost/total Life Cycle Energy Production, in brief Life Cycle of Energy). The durability of the solar module is defined indirectly by the standards such as IEC 61215/61646/UL 1703.
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www.solar-pv-management.com Issue II 2011
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