Energy Accounts and Billing

Help with your AGL Energy account or AGL online tools.

Help with your AGL Energy account or AGL online tools.

Solar Electricity Sold to Grid dollar value incorrectly calculated?

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Looking at the Usage chart for the current billing period on the AGL website, it tells me that I've sold 1445.96kWh back to the grid for a value of $151.50. My solar feed-in tariff is 12.40c. By my calculation, 1445.96 * (12.40/100) = $179.30.

 

I have downloaded my usage CSV and done some calculations. I'm able to match the electricity draw charges perfectly with what the website says for each day, however my calculations for the energy sold to the grid are consistently more than what the usage site shows using the formula in the above paragraph.

 

For example:

 

Website

bought from grid

CSV calculated

bought from grid

Website

sold to grid

CSV calculated

sold to grid

06/05/20218.51kWh / $3.148.51kWh / $3.146.89kWh / $0.556.89kWh / $0.85
07/05/202110.15kWh / $3.8210.15kWh / $3.8212.18kWh / $0.9712.18kWh / $1.51
08/05/20216.73kWh / $2.406.73kWh / $2.405.79kWh / $0.465.79kWh / $0.72

 

 

Can anyone explain why my simple calculation of (kWh sold to grid)*(feed-in tariff / 100) is not matching what AGL claims the dollar value of the sold electricity to the grid is?

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