Reality Check · Tulsa, OK
2026 GMC Sierra EV AT4 / Denali in Tulsa, OK
Winter range, charging cost and how far it goes, worked out for Tulsa's weather, grid and prices.
Tulsa's winters are cool rather than cold: on a typical January day (39°F) a Sierra EV AT4 / Denali gets an estimated 373 miles, 9% under its 410-mile rating, about the same as in the coldest week (around January 6, when it averages 38°F). By May it's back to about 421. Charging at home at Oklahoma's average rate (14.3¢/kWh) costs about $83 a month for 38 miles a day, about a third of the $291 a gas Sierra costs on the Midwest's gas. Tulsa's grid (SPP South) is 14% dirtier than the US average, but charging on it still makes 63% less CO₂ than gas.
Partly estimated. 2 of 5 temperature bands are from 117 real drives of this model; the rest come from 1,548 real drives in EVs at each temperature (and Recurrent's winter study below freezing), applied to its 410-mile rating. Each band switches to its own drives once it has 20 from 3 drivers.
October rangeEstimated
411mi
At Tulsa's typical October day, 62°F · 35% highway
Winter lowEstimated
371mi
January, 39°F · lows near 28°F
Home chargingEstimated
$83/mo
7.2¢ a mile at 14.3¢/kWh. Gas Sierra: $291/mo
Tulsa's grid
0.87lb CO₂/kWh
SPP South (EPA eGRID): 14% dirtier than the US, 63% less CO₂ than gas
Tulsa, season by seasonEstimated
A Sierra EV AT4 / Denali's range on a full charge, averaged over each season's months (30-year normal temperatures), at 35% highway.
Winter Dec–Feb · 41°F
7% below its 410-mile rating · coldest week 371 mi
380mi
Spring Mar–May · 61°F
About its rating
409mi
Summer Jun–Aug · 81°F
3% above its rating
422mi
Fall Sep–Nov · 62°FNow
About its rating
411mi
A Sierra EV AT4 / Denali's range through a Tulsa yearEstimated
Each month at Tulsa's 30-year normal temperature, 35% highway. No day of the year averages below freezing.
How far it goes from Tulsa, on real roadsEstimated
In October, from a full charge with 10% in reserve: about 185 mi out and back, 370 mi one way (January: 336 mi). Dots are DC fast chargers by network.
Fast charging around Tulsa
PlugLog's map of every public charger. Tesla-only Superchargers aren't counted.
- 68DC fast chargers within 25 mi
- 1.8 mito the nearest
- Tesla Supercharger126 in reach
- Francis Energy111
- ChargePoint108
- EVgo107
- EV Energy Group (FCN)104
Road trips in October, about, by road: Dallas (294 mi) and Little Rock (277 mi) one way on a charge; Memphis (426 mi) with one fast stop.
Questions Tulsa drivers ask
How far can a Sierra EV AT4 / Denali go in a Tulsa winter?
About 373 miles on a typical January day (39°F) and about the same in the coldest week of the year (around January 6, 38°F on average), estimated from real EV drives at those temperatures. That's 9% below its 410-mile rating, mostly from heating the cabin and the battery.
How much does it cost to charge a Sierra EV AT4 / Denali in Tulsa?
About $83 a month at home for 38 miles a day, at Oklahoma's average home electricity rate of 14.3¢/kWh: about 7.2¢ a mile. A gas Sierra on the Midwest's average gas ($4.14 a gallon) costs about $291 a month for the same driving.
Can I charge a Sierra EV AT4 / Denali on a regular 120 V outlet in Tulsa?
Not at 38 miles a day: a 120 V outlet adds only about 31 miles in 12 hours on an average day (28 in the coldest week). Plan on 240 V, which fills it from 10% in about 17 hours.
Is it greener to drive electric on Tulsa's grid?
Yes. Tulsa's grid (SPP South) is 14% dirtier than the US average, but a Sierra EV AT4 / Denali charged on it still makes 63% less CO₂ than a gas Sierra.
Check it for your own address
Your street, your daily miles, any temperature on the knob.
Sierra EV AT4 / Denali Reality Check near Tulsa
Sources: temperatures, 30-year normals (NOAA 1991–2020) at Tulsa International Airport, OK; home electricity, EIA (Oklahoma, July 2026); gas, EIA weekly (the Midwest); grid CO₂, EPA eGRID 2023; cold-weather range, PlugLog's real drives and Recurrent's winter study (Nov 2025); chargers, Open Charge Map and PlugLog. Updated Oct 22, 2026.