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 s ...