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Stopped Keeping Statistics or "How I Stopped Worrying and Learned to Drive my Car"

I am a data whisperer in real life. My goals are based on bringing out the stories embedded in information and turning those stories into a better bottom line.

After delivery, every ride I took was recorded. The mileage, energy usage, speed and temperature were captured for nine months. The illegible scrawl in small notepads, on receipts, unsuspecting bags (and even my limbs) was written down and eventually converted into "how far can we drive in circumstance X."

No more.

Gave it up.

Found that there was no need.

Why? After over 26,000 miles I have consistently arrived at my destinations safely. Invigorated. Excited. Looking forward to the next ride.

Anyone else stop worrying and learned to drive their car?

:) GRIN!

Great post and I am there with you.
After 1 full year of ownership in all conditions I don't even think about range anymore, just get in and drive.
In fact I can't remember the last time I had the energy screen on.

@madbuns +1 I also don't sweat my battery health either. Keep it charged from 50-70% and have it plugged in when home.

It's a worry free car if you just stop worrying about it.


On the 5,236 mile West Coast/Canada trip, where we were traveling off the Supercharger highway, we used EVTripPlanner to calculate every leg's elevation and rated miles compared to regular miles. We religiously kept logs of every time we supercharged, involving times of arrival and departure, odometer readings, kW used, Wh/mi, amps and volts and rate of charging, etc, etc, etc.

Over the two months, we arrived at a subtle change, though, from not wanting to go very far from the 110V outlet at our hotel in Hood River, to realizing that the number of charging points was as vast as the number of grains of sand on a beach, that charging opportunities were everywhere.

Upon returning home June 22, 2014, all the record keeping of charging ceased (thankfully). We just plug into our 14-50 and, the next morning, enjoy driving. Now instead of feeling that the T is an untested, unknown car, we can wield it more skillfully.

However, all this scientific energy had to go somewhere.

I have started a new chart to track the monthly billed electrical usage on SDGE Time of Use periods vs. the baseline allowance we had til December of last year. They just sent us a notice stating that peak noon to 6 p.m. will cost $.49 per kWh, off-peak $.20 and super off-peak $.16.

So far the data shows we are at $.05 per mile vs. $.25 for our V-8 ICE machine.

But there's no need to quantify the joy we feel each time we hop in the T.

Southern California Edison also just quietly raised their rates. I'm too lazy to look it up but I did note that in the four-tier system the fourth tier jumped from .31 to .32 per kWh but I think that the tier one base rate jumped from .10 to .15 per kWh! I'll check it out later tonight to make sure I'm posting relevant information.

I work from home so TOU is not going to work for me and I'm stuck on the standard residential plan. That's why I'm now really taking a closer look at solar since I'm in SoCal and have a huge South-facing roof surface.

Back to the OP's point, I don't track much anymore. On long trips I like to see how many actual miles I can get on a charge, I like to see how quickly I can put on miles at a Supercharger, and I like to see what it costs me monthly to charge it at home versus what I used to spend on gas (about $60 a month in electricity versus $190 per month on gas).

Other than that I just stomp the pedal every chance I get and enjoy the hell out the best car I've ever owned.

Range??? That's something in the kitchen that my wife sweats over. Me? I can't cook a lick. 11 months and anxiously awaiting my first contact with Tesla service (curiosity mainly).

No shield, Owner?

Haven't worried about it. Figured I'd get it at my annual.

@madbuns, I couldn't agree more. I've stopped recording - just drive.

Same here! Slaintè!

@NKYTA +1000!

I kept similar records for my trip west--my CA detailer lost the coming and my wife the going, hence an enforced ennui regarding statistics.

@Thomas N.

Upside to living in CA... all those super chargers.

Downside to living in CA... those electricity rates, yikes!

I abandoned my spreadsheet over a year ago.

+1 madbuns

@sbeggs- I'm in San Diego also. When does the peak pricing go up to 49c? We just started a month ago on TOU and thought it was 44c for peak?

@Thomas N., I'm looking at the Southern California Edison page now and see the following rates:

Tier 1: 14¢
Tier 2: 18¢
Tier 3: 30¢
Tier 4: 33¢

Depending on your specific needs, Southern California Edison offers EV rates. See:

SDG&E raised the peak summer rate twice. Once about 7 weeks ago, and I thought the letter said 2nd was coming in August. The notification actually came after 1st increase. Ridiculous how high it is from 12-6. I changed pool pump timing, AC, etc.


5am to noon = .20
Noon to 6 = .44
6 to 12am = .20
12am to 5am = .16

And the .44 is going up again.

Sir you can't let him in here. He'll see everything. He'll see the big board!

I keep a few notes on energy usage for some common trips at slow, normal and fast speeds. This gives me a point of reference on whether I need to be cautious when traveling somewhere I don't usually go.

@ madbuns,

Love the Strangelove reference!!!

Agree, I stopped being super detailed/neurotic around 12-13K. It has been liberating.

@wamochi, @SoCalBuzz,
Yes, we received the letter yesterday indicating that SDGE TOU rates will rise to 49 cents for peak times noon to 6 p.m. on August 1. Then in November the winter rates will kick in.

Doing laundry at 3 a.m.! (Could not sleep).

I feel like the estimated range in the middle of the dash is like a ticking time bomb, slowly counting down to doom.

But I'm on a 110.

And I average at least 100km (60+ miles) a day. 30+ hours to recharge. Simple math.

Am in a rental, and after 3 days of ownership I give up. Even though there are a number of charging stations around, I've gotta bite the bullet and install a 14-50 for the 4 months I have left here. Hopefully then I can experience the same freedom as you guys!

49 cents/kwh ... holy crap that is more expensive than in Germany.

It continues to fascinate me that so many of us are professional and scientific types. Analysis is always good. It proves or disproves held beliefs if we are just open to the sheer beauty of numbers and their meanings. Knowing when this is no longer a fruitful enterprise is also part of the scientific approach. We call that proving a Law. I also loved the sideways alluding to Dr. Strangelove here. Stanley would be proud.

@Thomas N., I'm looking at the Southern California Edison page now and see the following rates:

Tier 1: 14¢
Tier 2: 18¢
Tier 3: 30¢
Tier 4: 33¢

Depending on your specific needs, Southern California Edison offers EV rates. See:

Yep, I'm familiar with those rates. They actually jacked them more than I thought. I believe Tier 4 used to start at .10 and Tier 4 maxed out at .31. It's crazy because we have what I would call a normal household and within a week we're already out of Tier 1 and the fun begins.

Their EV rates have always been a joke. You need a dedicated meter put into your house to take advantage of it. SCE will give you the meter for free but you must have it installed and they told me that cost can range from $3000 to $7000. They were right. I had only one bid but it was $3700. I think the ROI would be something like 10 years with the small amount of miles I drive (under 10K per year) so back to the residential plan for me.

Anyway, I have hijacked this thread enough. I have many posts about SCE over on the SoCal forum.

@sberman -

I just pulled the rates of the SCE page:

Tier 1 Rate Tier 2 Rate Tier 3 Rate Tier 4 Rate
15 ¢ /kWh 19 ¢ / kWh 28 ¢ / kWh 32 ¢ / kWh

These are as of July 7, 2014. They just raised them. Not sure where you pulled your numbers.

In British Columbia, Canada electricity is 7.52¢ a kWh up to 1350 kWh monthly and then it goes up to 11.27¢ a kWh for over 1350 kWh. 25,000KM of driving per year should cost around $500 or less.

All public chargers in BC are free, although some places charge for "parking", but the electrons are free. My wife wonders how long it will take me to stop flipping the bird at gas stations, as we cruise sliently past.

Funny, but the TV news guy that interviewed me said, "What are you, a scientist or something?" I told him no, but remarked that the car had really attracted a lot of engineers and doctor types. Not to be smug, but I imagine the average Tesla owner probably wouldn't have much trouble qualifying for Mensa (I didn't say that last part). :)

Flat $0.10 rate here... feeling awfully lucky.

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