     I purchased a Nissan Leaf on May 12th; so what does it cost me in electricity?

Like most people I have an electric bill and I have tier billing. These are the tiers from Austin Energy:

 Tier 1 first 500 kWh at \$0.018 per kWh \$9.00 Tier 2 next 500 kWh at \$0.056 per kWh \$28.00 Tier 3 next 500 kWh at \$0.072 per kWh \$36.00 Tier 4 next 1,000 kWh at \$0.084 per kWh \$84.00

The Measure:

To measure how much power my charger consumes; I use a device called a Kill-o-Watt. It plugs in between the wall and the car charger.

Here are 2 average samples:

From a full charge I drove 31 miles and used 12.8 kWh.

From a full charge I drove 64.4 miles and used 25.72 kWH

My average is right around 35 miles a day and I only use this car for work, so 20 days a month. Last month was 715 miles.

The Math:

So from these two samples I can say 95.4 miles will use 38.52 kWH

Mathematically that works to be 100 Miles at 40.37 kWH or 1 mile = .4037 kWH

So depending on what tier I am in when charging the Leaf the price will vary.

I general get through all 4 tiers by the end of the month.

Tier 1 would be 179 miles at 0.4037kWH  per mile = 72.161 kWH total * \$0.018 = \$1.29

Tier 2 would be 179 miles at 0.4037kWH  per mile = 72.161 kWH total * \$0.056 = \$4.04

Tier 3 would be 179 miles at 0.4037kWH  per mile = 72.161 kWH total * \$0.072 = \$5.20

Tier 4 would be 179 miles at 0.4037kWH  per mile = 72.161 kWH total * \$0.084 = \$6.06

The Result:

So my drive to work of 715 miles cost me roughly \$16.59 a month.

My Leaf: The 2 blue lights on the dashboard show the charge level. There are 3 lights total. Kill-a-watt: This measure usage for anything you plugin to it. 