EV Charging Downtime: The Cost This Site Cannot Model

Naming the gap before working around it

This site tracks two electric vehicles — the Chevrolet Bolt EV and the Tesla Model 3 — and for both of them, every cost figure on this site is built from kilowatt-hours per 100 miles and a flat residential electricity price. What this site does not track for either car is anything about charging itself: how fast either car charges, what a public fast-charging session actually costs per kilowatt-hour, how large either car’s battery pack is, or how much of a driving shift gets spent plugged in rather than earning fares. That is a real gap, not a rounding error, and it matters specifically for a rideshare or delivery driver in a way it does not for an ordinary EV owner: a private driver who charges overnight at home never experiences charging as downtime at all, while a full-time driver who needs a mid-shift top-up experiences it as hours not spent driving for pay. This guide explains why that gap exists and how to think about it without a number this site cannot honestly provide.

What this site’s electricity price actually represents

The $0.1834 per kilowatt-hour this site uses everywhere, sourced from the U.S. Energy Information Administration’s electricity price series, is a residential rate — the price of electricity delivered to a home, the kind of charging most EV owners rely on most of the time. It is not the price charged at a public fast-charging station, which is set independently by each charging network and typically runs well above the residential rate, sometimes billed per kilowatt-hour and sometimes per minute depending on the network and the state. A driver who charges exclusively at home is paying something close to this site’s modeled energy cost per mile. A driver who relies on public fast charging during a shift is very likely paying more per mile than this site’s Bolt EV or Model 3 review states, and by how much depends on the specific network and market — a gap this site cannot close without inventing a number it has not verified.

The three charging speeds, and what each is actually good for

The U.S. Department of Energy’s Alternative Fuels Data Center describes three charging levels. AC Level 1 uses a standard household outlet and is the slowest of the three — the DOE notes “many EV owners are able to meet their daily driving range requirements by charging overnight” on Level 1 alone, but it is not fast enough to add meaningful range during a short break. AC Level 2 runs at 240 volts and, per the DOE, “can range from 2.9 to 19.2 kW power output” depending on the equipment — fast enough for a full overnight charge and common in home installations, but still measured in hours rather than minutes. DC fast charging, what the DOE also calls Level 3, “enables rapid charging along heavy traffic corridors” at power outputs “up to 500 kW,” though actual charging power “varies by vehicle and battery state of charge” — a car does not charge at its maximum rate for the whole session, and slows well before the battery is full.

The government’s own consumer-facing fuel economy site puts a number on that in general terms: “Fully recharging the battery pack can take 3 to 12 hours. Even a ‘fast charge’ to 80% capacity can take 30 min.” That 30-minute figure, not a full charge but a partial one to 80 percent, is the realistic best case for a mid-shift top-up at a DC fast charger — and neither this site’s Bolt EV nor Model 3 review has the battery capacity data needed to say how many miles that specific 30 minutes actually restores for either car, since that depends on pack size, a figure this site’s vehicle data does not include.

It is also worth noting, directly from the DOE’s own reporting, that this is not a hypothetical concern invented for this guide: the agency’s own material on fast-charging growth cites “the installation of fast charging hubs for transportation network companies (e.g., Uber and Lyft)” as one of the drivers of DC fast charging’s expansion — the charging industry itself recognizes rideshare driving as a distinct use case with its own infrastructure needs, separate from the overnight-at-home pattern most EV charging data is built around.

Why this changes the real cost of driving an EV for pay

Every calculation on this site, including the rideshare profit calculator, converts miles driven into net earnings without subtracting time spent not driving. For a gas or hybrid car, refueling takes minutes and barely registers against a full shift. For an EV relying on public fast charging mid-shift, even a best-case 30-minute stop is time that could otherwise be spent earning fares — an opportunity cost with a real dollar value specific to each driver’s own earnings rate, which is exactly the number the rideshare profit calculator already computes as net earnings per hour. A driver who knows their own net hourly figure from that calculator can multiply it by however much charging time they actually expect in a shift to get a genuine estimate of what charging downtime costs them — but that multiplication has to happen with a driver’s own numbers, because this site has no basis for guessing how often any given driver needs a mid-shift charge.

The two EVs in this dataset are not identical on this point, even without exact session data. The Model 3 uses 23.7 kilowatt-hours per 100 miles against the Bolt EV’s 28.1 — a real efficiency gap that means the Model 3 needs less energy replaced per mile driven, all else equal. What “all else equal” leaves out is each car’s charging speed curve and battery size, neither of which this site tracks, so this efficiency gap should not be read as a claim that the Model 3 necessarily charges faster or spends less time plugged in — only that it needs somewhat less energy to cover the same distance.

The honest bottom line

A driver seriously weighing an EV for full-time rideshare or delivery work should treat this site’s Bolt EV and Model 3 reviews as a floor on real running cost, not a ceiling — the per-mile figures there assume home charging at a residential rate, and any driver leaning on public fast charging during shifts should expect a higher effective cost per mile than what those reviews state, plus real time lost that a gas or hybrid car’s owner never has to budget for. Home charging access is the single biggest factor in whether that gap is small or large for a specific driver, and it is not something a vehicle spec sheet can answer — it depends on where a driver lives and parks, not on which EV they choose.