You have cheap electricity, but it's not quite that cheap. You're forgetting a "Fuel and Purchased Power" rate of 2.758¢ per Kwh (2.087 base + 0.671 adjustment) and a transmission adjustment of 0.030¢ per Kwh, plus possibly some taxes which I couldn't find. So the rate is 5.092 to 8.092¢ per Kwh...