nosuchthing
Well-known member
- Joined
- Jul 16, 2010
- Messages
- 740
I just got my electric bill so I whipped out the calculator just to see if we're saving any money on Leaf driving, and particularly how much.
Turns out we used 20 kW extra power per day (Leaf). Translates to about 72 miles of driving Leaf. I get 3.6 average and cannot get any higher -- it's all freeway at 65 and higher.
My avarage cost per kW comes to 21.3 cents winter juice as compared to 26.8 cents summer juice. PG&E charges more in summer than in winter in case you haven't noticed on your bill. They get you good particularly on top tier on-peak rate of 50 cents per kW.
So, 21.3 c/kW x 20 kW comes to $4.26 driving 72 miles. If it was an ICE with 28 mpg the cost would be (at $3.60 gas) $9.26. Five bucks savings per day amounts to $150 a month plus about 5 bucks per month for oil changes (every 3 months - I do it myself and always get $2 oil on sale). Not too shabby even with PG&E predatory pricing and no real breaks for us Leaf owners.
As far as the summer juice, it is 26.8 c/kW x 20 kW which comes to $5.36 that translates to savings of $3.90 per day or $117 per month. Not as flashy but money nevertheless. Plus 43 lb of Carbon savings as well, calculation based on 60 lb net value per 100 miles driven (90 lb ICE vs. 30 lb Leaf juice generation).
My next step in a year or two is 8-10 kw solar shingles (DOW Powerhouse) and second electric with a bigger range. That means free, clean driving, and anytime washer dryer, i.e. no more TOU (time of use).
Turns out we used 20 kW extra power per day (Leaf). Translates to about 72 miles of driving Leaf. I get 3.6 average and cannot get any higher -- it's all freeway at 65 and higher.
My avarage cost per kW comes to 21.3 cents winter juice as compared to 26.8 cents summer juice. PG&E charges more in summer than in winter in case you haven't noticed on your bill. They get you good particularly on top tier on-peak rate of 50 cents per kW.
So, 21.3 c/kW x 20 kW comes to $4.26 driving 72 miles. If it was an ICE with 28 mpg the cost would be (at $3.60 gas) $9.26. Five bucks savings per day amounts to $150 a month plus about 5 bucks per month for oil changes (every 3 months - I do it myself and always get $2 oil on sale). Not too shabby even with PG&E predatory pricing and no real breaks for us Leaf owners.
As far as the summer juice, it is 26.8 c/kW x 20 kW which comes to $5.36 that translates to savings of $3.90 per day or $117 per month. Not as flashy but money nevertheless. Plus 43 lb of Carbon savings as well, calculation based on 60 lb net value per 100 miles driven (90 lb ICE vs. 30 lb Leaf juice generation).
My next step in a year or two is 8-10 kw solar shingles (DOW Powerhouse) and second electric with a bigger range. That means free, clean driving, and anytime washer dryer, i.e. no more TOU (time of use).