About Us

Great Canadian Solar Ltd. (GCS) is a 100% Alberta owned electrical engineering and contracting company specializing in the installation of grid connected and grid isolation photovoltaic (PV) power systems.  

GCS is based in Edmonton and services all of Western Canada.

The company was originally incorporated as C.T's Electrical Consulting and Construction in 2005. Until 2009, we focused on commercial/residential electrical installations and industrial electrical design services to engineering companies.

In 2009, GCS's focus switched to the design, procurement and construction of grid connected and grid isolated photovoltaic (PV) power systems for residential, agricultural, commercial and industrial clients.  

Since then, GCS constructed 33% of the installed solar capacity within the province and as such, gained valuable experience by installing over 5,500 kW of solar PV systems with no safety incidents.

Since 2009, GCS has consistently proven itself to be a leader in the solar industry by being involved in many of the largest and more difficult projects in the province.

Great Canadian Solar:

  • is a business member of the Solar Energy Society of Alberta (SESA);
  • is WCB certified;
  • carries $5,000,000.00 worth of liability insurance.



Clifton Lofthaug is the President of GCS Ltd. Beginning his electrical apprenticeship in 1996, Clifton went on to become a Journeyman Electrician with an Inter-provincial Red Seal, a Master Electrician, then one of the first CSA certified Construction Electricians (NOC 7241) in Solar Photovoltaic Systems in Canada, and one of the first North American Board of Certified Energy Practitioners (NABCEP) certified PV Installers in Alberta.

NABCEP is the most respected and well-established national certification organization for renewable energy professionals.  Designation as a NABCEP certified solar installer is widely recognized to be the most important certification of its kind in the renewable energy industry.

To earn his NABCEP certification, Clifton was required to demonstrate his competence as a solar PV installer by passing a rigorous exam that covers the multi craft aspects of being a professional PV installer.  He needed to demonstrate knowledge on subjects as diverse as system design, electrical and job safety, the National Electrical Code, roofing and construction techniques, system commissioning and troubleshooting.

Upon completion of NAIT's Electrical Engineering program he began his work in the engineering industry for 8 years eventually becoming a Professional Technologist (Engineering).  This designation allows Great Canadian Solar Ltd. to also operate as an engineering firm.





""As a new program exploring alternative energies we realized quickly that a solar photovoltaic teaching array would be an absolute must......After a number of concept changes and a failed attempt at installation it was decided, based on the recommendations of industry insiders, that Great Canadian Solar would take the lead on the project. We haven’t looked back since....They have proven themselves to not only be master technicians but excellent role models for our students. Many thanks to the team at GCS.""

- Tim Matthews, Laboratory Technologist - Alternative Energy Program NAIT