This residential solar power system in Edmonton contains 41 high-end SunPower modules with an efficiency of a whooping 18%. The solar modules are installed on four sub-arrays around the house, including on its south western wall. The 9.23kW system has a total DC capacity of 9,225 W (9.23 kW) and is expected to generate about 10,000kWh per year, which will offset the release of 12,200 lbs of carbon dioxide from natural gas or 21,000 lbs from coal. To work properly these high efficiency modules required positive grounding, and so we grid-tied them with ABB high-voltage microinverters which were specifically designed for high voltage modules needing positive grounding.
We also used Kinetic’s shared rail system, which allows two rows of modules to share one rail (as opposed to having two rows of rails for each row of panels) and thereby reducing the number of penetrations by 38%.
Installing on the wall?
Although vertically mounted panels produces less energy over the year, they can have other benefits. For example, vertical panels don’t accumulate any snow, and can produce power when other flatter panels would be covered in them. This array also gives a window look to the side of the house, and shades the bedroom from intense summer heat reducing energy required for air conditioning.
Dear Moustafa,Click here to monitor the system’s performance
It has been a pleasure dealing with you, and thanks for helping us realize our dream of reaching net‐zero with our power consumption needs. … [Neighbour Power] values the client relationship first, and continues to be a trusted resource for us after the system was installed. I would not hesitate to recommend you & your team for anyone that is looking to offset their power bills with clean, renewable, solar energy.David Gusta nGAGE Networks, Edmonton, Alberta
In total we installed 41 Sunpower solar modules and 41 ABB high voltage microinverters. The modules have been in operation for over 6 years!