March Solar Production – 714kWh and One Year of Solar Power – 8622kWh

Here are my solar production numbers for March. 714kWh (at inverter). 711kWh (at Dominion meter). PVWatts estimate was 675kWh. Cumulative power production as of Mar 31 is 8901kWh (8859 at Dominion meter). More details here.

In one year, from April 1 2014 to March 31 2015, the system produced 8622 kWh (measured at inverter), 8589 kWh (measured by Dominion meter). This compares to 7372 kWh estimated by PVWatts.

January 2015 Solar Production – 490kWh and 2014 in review

Here are my solar production numbers for January. 490kWh (at inverter). 489kWh (at Dominion meter). PVWatts estimate was 505kWh. Cumulative production as of Jan 31 is 7565kWh (7529 at Dominion meter). More details here.

In 2014, from Apr to Dec, the system produced 6796 kWh (measured at inverter), 6763 kWh (measured at Dominion meter) compared to a PVWatts estimate of 5767 kWh. Since the system went live in March it produced enough power to pay for over 8% of its cost (after the expected Federal rebate).