Slate Reality Check · Madison, WI
Slate truck in Madison, WI
Winter range, charging cost and how far it goes, worked out for Madison's weather, grid and prices.
In a typical Madison January (19°F), a Slate gets an estimated 143 miles on a charge, 30% less than its 205-mile rating, and about the same in the coldest week of the year (around January 18, when it averages 19°F). By May it's back to about 203. Charging at home at Wisconsin's average rate (19.1¢/kWh) costs about $76 a month for 38 miles a day, against $184 for a gas Ford Maverick on the Midwest's gas. Madison's grid (MRO East) is 82% dirtier than the US average, but charging on it still makes 36% 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
197mi
At Madison's typical October day, 50°F · 35% highway
Winter lowEstimated
141mi
January, 19°F · lows near 11°F
Home chargingEstimated
$76/mo
6.6¢ a mile at 19.1¢/kWh. Gas Ford Maverick: $184/mo
Madison's grid
1.40lb CO₂/kWh
MRO East (EPA eGRID): 82% dirtier than the US, 36% less CO₂ than gas
Madison, 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 · 23°F
27% below its 205-mile rating · coldest week 141 mi
150mi
Spring Mar–May · 46°F
7% below its rating
191mi
Summer Jun–Aug · 70°F
About its rating
204mi
Fall Sep–Nov · 49°FNow
5% below its rating
194mi
A Slate's range through a Madison yearEstimated
Each month at Madison's 30-year normal temperature, 35% highway. 103 days a year average below freezing.
How far it goes from Madison, on real roadsEstimated
In October, from a full charge with 10% in reserve: about 89 mi out and back, 177 mi one way (January: 129 mi). Dots are DC fast chargers by network.
Fast charging around Madison
PlugLog's map of every public charger. Tesla-only Superchargers aren't counted.
- 26DC fast chargers within 25 mi
- 2.8 mito the nearest
- ChargePoint57 in reach
- Tesla Supercharger31
- EV Connect24
- Blink24
- EVgo21
Road trips in October, about, by road: Chicago (155 mi) and Milwaukee (92 mi) one way on a charge; Grand Rapids (239 mi) with one fast stop.
Questions Madison drivers ask
How far can a Slate go in a Madison winter?
About 143 miles on a typical January day (19°F) and about the same in the coldest week of the year (around January 18, 19°F on average), estimated from real EV drives at those temperatures. That's 30% below its 205-mile rating, mostly from heating the cabin and the battery. Madison averages 103 days a year below freezing.
How much does it cost to charge a Slate in Madison?
About $76 a month at home for 38 miles a day, at Wisconsin's average home electricity rate of 19.1¢/kWh: about 6.6¢ a mile. A gas Ford Maverick on the Midwest's average gas ($4.14 a gallon) costs about $184 a month for the same driving.
Can I charge a Slate on a regular 120 V outlet in Madison?
At 38 miles a day, most of the year: a 120 V outlet adds about 48 miles in 12 hours on an average day, but about 35 in the coldest week, so it can fall a little behind then. A 240 V outlet fills it from 10% in about 6 hours.
Is it greener to drive electric on Madison's grid?
Yes. Madison's grid (MRO East) is 82% dirtier than the US average, but a Slate charged on it still makes 36% 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 Madison
Sources: temperatures, 30-year normals (NOAA 1991–2020) at Madison Dane Rgnl Airport, WI; home electricity, EIA (Wisconsin, 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.