PHOTOVOLTAICS IN THE CONTEXT OF CARBONEMISSION TRADING

摘要

Comprehensive CO2-balances within the life-cycle of PV systems have been carried out considering allCO2 sinks and sources at the locations and under the conditions of production, of transport, installation and operation,as well as of recycling. Calculations of the possible effect on CO2 reduction by PV energy systems may be incorrectif system borders are not set wide enough and remain on a national level. In the examples of Brazil and Germany, theeffective CO2 reductions have derived, including the variables of possible interchange scenarios for production andoperation of the PV systems, as well as the carbon dioxide intensity of the local electrical grids. In the case of Braziloff-grid applications and the partial substitution of Diesel generating sets by photovoltaics are also examined. CO2reduction may reach 26,805 kg/kWp for the case of replacement of diesel generators in Brazil by PV based on singlecrystallinesolar cells manufactured in Brazil In the context of carbon dioxide trading, this means a co-financing of2.3% to 9% by the market values of carbon dioxide value of 5.00 $ US to 20.00 $ US per metric ton. While thecarbon value is steadily increasing, carbon emission trading will play an important role in financing autonomous PV systems in the future