First-Year Performance of a 20-MW $_{\rm ac}$ PV Power Plant

After one year of continuous operation in Ontario, Canada, the measured performance of the Sarnia 20-MW $_{\rm ac}$ power plant can be compared with both the long-term energy prediction and the expected energy for the operating year 2010. Based on the first-year\´s data at Enbridge\´s Sarnia 20-MW $_{\rm ac}$ power plant, the power plant is operating 2.1% above the long-term prediction, which is well within the expected error bars of the measurements. Estimation of the modeling error not only shows that there is no single driver of the overall modeling error during normal operation but shows that improvements are possible as well.