Reality Check · Worcester, MA
2026 GMC Sierra EV AT4 / Denali in Worcester, MA
Winter range, charging cost and how far it goes, worked out for Worcester's weather, grid and prices.
In a typical Worcester January (25°F), a Sierra EV AT4 / Denali gets an estimated 322 miles on a charge, 22% less than its 410-mile rating, and about 319 miles in the coldest week of the year (around January 19, when it averages 24°F). By June it's back to about 415. Power is pricey in Massachusetts (30.5¢/kWh), so charging at home costs about $189 a month for 38 miles a day, still less than the $295 a gas Sierra costs on Massachusetts's gas. And Worcester's grid (NPCC New England), 30% cleaner than the US average, makes it 76% 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
395mi
At Worcester's typical October day, 51°F · 35% highway
Winter lowEstimated
319mi
January, 25°F; Jan 19–25 at 24°F · lows near 16°F
Home chargingEstimated
$189/mo
16.3¢ a mile at 30.5¢/kWh. Gas Sierra: $295/mo
Worcester's grid
0.54lb CO₂/kWh
NPCC New England (EPA eGRID): 30% cleaner than the US, 76% less CO₂ than gas
Worcester, 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 · 27°F
19% below its 410-mile rating · coldest week 319 mi
332mi
Spring Mar–May · 46°F
6% below its rating
383mi
Summer Jun–Aug · 68°F
About its rating
420mi
Fall Sep–Nov · 51°FNow
4% below its rating
395mi
A Sierra EV AT4 / Denali's range through a Worcester yearEstimated
Each month at Worcester's 30-year normal temperature, 35% highway. 87 days a year average below freezing.
How far it goes from Worcester, on real roadsEstimated
In October, from a full charge with 10% in reserve: about 178 mi out and back, 356 mi one way (January: 290 mi). Dots are DC fast chargers by network.
Fast charging around Worcester
PlugLog's map of every public charger. Tesla-only Superchargers aren't counted.
- 99DC fast chargers within 25 mi
- 1.1 mito the nearest
- ChargePoint414 in reach
- Tesla Supercharger209
- EVgo172
- Electrify America102
- EV Connect80
Road trips in October, about, by road: Philadelphia (291 mi) and Syracuse (283 mi) one way on a charge; Harrisburg (372 mi) with one fast stop.
Questions Worcester drivers ask
How far can a Sierra EV AT4 / Denali go in a Worcester winter?
About 322 miles on a typical January day (25°F) and about 319 in the coldest week of the year (around January 19, 24°F on average), estimated from real EV drives at those temperatures. That's 22% below its 410-mile rating, mostly from heating the cabin and the battery. Worcester averages 87 days a year below freezing.
How much does it cost to charge a Sierra EV AT4 / Denali in Worcester?
About $189 a month at home for 38 miles a day, at Massachusetts's average home electricity rate of 30.5¢/kWh: about 16.3¢ a mile. A gas Sierra on Massachusetts's average gas ($4.20 a gallon) costs about $295 a month for the same driving.
Can I charge a Sierra EV AT4 / Denali on a regular 120 V outlet in Worcester?
Not at 38 miles a day: a 120 V outlet adds only about 30 miles in 12 hours on an average day (24 in the coldest week). Plan on 240 V, which fills it from 10% in about 17 hours.
Is it greener to drive electric on Worcester's grid?
Yes, more than most places. Worcester's grid (NPCC New England) is 30% cleaner than the US average, so a Sierra EV AT4 / Denali charged on it makes 76% 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 Worcester
Sources: temperatures, 30-year normals (NOAA 1991–2020) at Worcester Rgnl Airport, MA; home electricity, EIA (Massachusetts, July 2026); gas, EIA weekly (Massachusetts); 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.