Quote:
Originally Posted by FlameOn
My solar system just went live. Just wondering how you are calculating the "Estimated Bill w/o Solar" w/ all the rate riders, transmission fees, etc. involved? Or are you just calculating those from the https://ucahelps.alberta.ca/atco-gas-rate-riders.aspx or something else? |
I developed my own calculator in hidden sheets that feed that summary. The calculations are all published, in Calgary Enmax is the line owner so they publish all the data for the fees.
https://www.enmax.com/tariffs
and here:
Local Access Fee
and here:
RRO
Where it gets tricky is that the tariffs can change mid billing cycle, so I do my best to calculate based on days in the billing cycle but because I am too lazy to build a sheet that calculates per day there is some error in the calculation, generally in the order of magnitude of less than $1, and often it is bang on.
Every month I do a check to calculate my riders based on my energy import, which should equal what was charged on my bill. once that check is complete I add the self consumed energy to the calculation to calculate what I would have paid in fees on that energy.
Most of the charges come from the Enmax Tariff document, the LAF comes from the City and the RRO.
Distribution Charge = $0.76/day + $0.015/kwh
Transmission Charge = $0.0414/kwh
Local Access Fee is essentially 11.11% of the energy usage X RRO, which changes monthly
Balancing Pool Rider - $0.001331/kWh
Transmission Access Rider - ($0.005047/kwh)
Transmission Access Deferral - $0.000205/kwh
The Tariff is updated quarterly.