The Electricity Grid Displacement Factor (EGDF) or the grid factor measures how much carbon dioxide emissions are being produced by the electricity grid.
It’s like a score – higher means there is more electricity produced by fossil-fuels flowing through the grid than electricity produced by zero-emission power plants. We multiply this score by the amount of electricity your solar PV system produces in order to calculate the emissions reductions and turn them into carbon offsets. The Alberta Emission Offset System (AEOS) uses fixed scores that are updated every year.
So, if the EGDF is high, your solar electricity production reduces a high amount of carbon dioxide emissions and will result in more carbon offsets.
If it is lower, your solar electricity production reduces less emissions and will result in fewer carbon offsets.
However, if you sign up with Re(source), your solar PV system will use the grid factor during the year it becomes a part of Re(source) for its entire term. So, signing up sooner will result in significantly higher carbon offset payments.
The table below shows the published EGDF for the Alberta electric grid from 2024 to 2029.
Vintage
Electricity Grid Displacement Factor with line loss applied (tCO2e/MWh)
2024
0.5226
2025
0.4907
2026
0.4588
2027
0.4271
2028
0.3952
2029
0.3633
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The Alberta Emission Offset System is the largest and longest operating regulatory carbon market in Canada. Emission offset project developers undertake eligible projects to reduce or sequester greenhouse gas emissions and serialize as emission offsets on the Alberta Emissions Offset Registry. Re(source) Energy is an emission offset project developer. Project