My 40 solar panels lifetime production after 21 months
May 6th 2014 was the first day my 40 solar panels started generating electricity to HydroOttawa’s grid. Over a year ago, I wrote the article 40 solar panels + 1 Volt where I described the installation. As a reminder, with Ontario’s MicroFit program, I signed a 20 year contract. I sell the electricty generated by the panels at 0,396$/kWh.
All panels are 250W with micro-inverters. There are 33 panels are on the house’s rooftop and 7 on the garage’s rooftop. Since the garage’s rooftop is lower, the house’s rooftop creates shadow in the afternoon. Another important information : my neighbour’s 30 year old huge pine tree does create shadow on my house early in the morning and most of the day in winter.
21 months later, the 40 solar panels have generated 18.9 MWh of electricity. which represent a carbon offset of 13.1 tons.
In 2015, the panels generated 10 840 kWh, but the grid calculated 10 179,73 kWh. There are different places where there is a loss. I will let you speculate or explain this.
I have included different screen shots of statistics from the Enphase’s Enlighten Manager. Feel free to comment !