Slate Reality Check · Washington, DC
Slate truck in Washington, DC
Winter range, charging cost and how far it goes, worked out for Washington's weather, grid and prices.
Washington's winters are cool rather than cold: on a typical January day (38°F) a Slate gets an estimated 183 miles, 11% under its 205-mile rating, about the same as in the coldest week (around January 16, when it averages 37°F). By April it's back to about 203. Charging at home at Washington, DC's average rate (25.2¢/kWh) costs about $93 a month for 38 miles a day, against $192 for a gas Ford Maverick on the Central Atlantic's gas. And Washington's grid (RFC East), 22% cleaner than the US average, makes it 75% less CO₂ than gas.
Estimated. Almost no one's driving a Slate yet, so these come from 1,548 real drives in other EVs at each temperature (and Recurrent's winter study below freezing), applied to the Slate's rating. They switch to real Slate drives as owners log them.
October rangeEstimated
203mi
At Washington's typical October day, 61°F · 35% highway
Winter lowEstimated
182mi
January, 38°F · lows near 30°F
Home chargingEstimated
$93/mo
8.0¢ a mile at 25.2¢/kWh. Gas Ford Maverick: $192/mo
Washington's grid
0.60lb CO₂/kWh
RFC East (EPA eGRID): 22% cleaner than the US, 75% less CO₂ than gas
Washington, season by seasonEstimated
A Slate's range on a full charge, averaged over each season's months (30-year normal temperatures), at 35% highway.
Winter Dec–Feb · 40°F
8% below its 205-mile rating · coldest week 182 mi
188mi
Spring Mar–May · 58°F
About its rating
201mi
Summer Jun–Aug · 79°F
About its rating
204mi
Fall Sep–Nov · 61°FNow
About its rating
201mi
A Slate's range through a Washington yearEstimated
Each month at Washington's 30-year normal temperature, 35% highway. No day of the year averages below freezing.
How far it goes from Washington, on real roadsEstimated
In October, from a full charge with 10% in reserve: about 91 mi out and back, 183 mi one way (January: 165 mi). Dots are DC fast chargers by network.
Fast charging around Washington
PlugLog's map of every public charger. Tesla-only Superchargers aren't counted.
- 241DC fast chargers within 25 mi
- 0.5 mito the nearest
- Tesla Supercharger197 in reach
- EVgo177
- ChargePoint154
- Electrify America83
- SWTCH - Charge Everywhere74
Road trips in October, about, by road: Allentown (178 mi) and Philadelphia (158 mi) one way on a charge; Virginia Beach (195 mi) with one fast stop.
Questions Washington drivers ask
How far can a Slate go in a Washington winter?
About 183 miles on a typical January day (38°F) and about the same in the coldest week of the year (around January 16, 37°F on average), estimated from real EV drives at those temperatures. That's 11% below its 205-mile rating, mostly from heating the cabin and the battery.
How much does it cost to charge a Slate in Washington?
About $93 a month at home for 38 miles a day, at Washington, DC's average home electricity rate of 25.2¢/kWh: about 8.0¢ a mile. A gas Ford Maverick on the Central Atlantic's average gas ($4.31 a gallon) costs about $192 a month for the same driving.
Can I charge a Slate on a regular 120 V outlet in Washington?
At 38 miles a day, yes, all year: a 120 V outlet adds about 45 miles in 12 hours even in Washington's coldest week, and about 50 on an average day.
Is it greener to drive electric on Washington's grid?
Yes, more than most places. Washington's grid (RFC East) is 22% cleaner than the US average, so a Slate charged on it makes 75% less CO₂ than a gas Ford Maverick.
Check it for your own address
Your street, your daily miles, any temperature on the knob.
Slate Reality Check near Washington
Sources: temperatures, 30-year normals (NOAA 1991–2020) at Washington Reagan Airport, VA; home electricity, EIA (Washington, DC, July 2026); gas, EIA weekly (the Central Atlantic); 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.