kWh tariffs · dwell-time economics · charge-and-shop bundles — a successor to our gas-station pricing research
Fuel margins are eroding faster than most convenience retailers modeled for. In the U.S., fuel contributed 65% of retailer revenue in 2025 but only 39% of profit — and KPMG expects non-fuel categories to generate up to 80% of forecourt profit by the mid-2030s. EV charging is the new front door to that non-fuel margin. But unlike gasoline, where the pump price is close to the whole story, an EV charging price sits on top of a utility tariff stack, a dwell-time-driven basket opportunity, and a bundling decision retailers are only beginning to price deliberately. This note breaks down all three, with worked numbers.
1. The kWh Tariff Stack
What a driver pays per kWh and what it costs the site to deliver that kWh are two different curves — and the gap is almost entirely explained by utility demand charges. Demand charges bill on a site's peak draw (kW) regardless of how much energy (kWh) is actually sold, so a DC fast charger idling at low utilization spreads a large fixed charge across very few paid sessions.
Published benchmarking puts U.S. non-member DC fast charging at roughly $0.51/kWh on average (Q2 2025), with a realistic planning band of $0.35–$0.65/kWh depending on state and network. Underneath that price, stations exposed to demand charges run a levelized cost of charging (LCOC) about 39% higher than stations on energy-only tariffs — and at the low-utilization end of the curve, demand-charge-exposed sites can see effective costs several multiples higher than the median. Demand charges alone have been measured at ~74% of a typical low-use commercial electric bill.
Europe's tariff stack is structured differently but the utilization sensitivity is similar. Fast-charging medians run from about €0.38/kWh in the cheapest markets (Finland, Bulgaria) up past €0.60–€0.70/kWh in higher-cost corridors, against an EU home electricity average near €0.29/kWh. AFIR's ad hoc payment mandate and ChargeUp Europe's push for modernized network tariffs are both, at core, arguments about who absorbs utilization risk — the same variable driving the U.S. curve above.
2. Dwell-Time Economics
A gasoline fill-up holds a customer for about five minutes. An EV charging session holds them for 15–35 minutes — and that difference is the actual commercial opportunity, not the electricity margin itself. McKinsey's analysis found EV drivers 45% more likely to enter the store than a fuel-only customer, spending 25% more on food once inside. Site-level data reinforces the pattern at the network level too: DC fast charging stations sited near a grocery anchor average roughly five times the session volume of the dataset median, because dwell time and footfall compound.
Retail-adjacent EV charging studies put incremental basket lift at roughly $1–$4 per charging visit — modest per session, but compounding across a site that may run dozens of sessions a day. The pricing implication: a kWh price set purely to match the posted rate at the DCFC down the road ignores the larger, higher-margin lever sitting inside the store.
3. Charge-and-Shop Bundle Economics
The commercial case for bundling is straightforward: give up some electricity margin to pull more sessions into a basket-qualifying purchase, and fund the discount from non-fuel margin rather than the energy line. The worked example below assumes a 35 kWh session (roughly a 20–30 minute DC fast-charge top-up) and applies the entry-rate and spend uplifts from Section 2 to a bundle that discounts $0.05/kWh (about 11%) when the driver taps a loyalty offer or crosses a small in-store spend threshold.
Even after giving back $1.75 in electricity margin per session, modeled total revenue per session rises from $17.85 to $19.60 — roughly a 10% lift — because the entry-rate and basket-size gains land on non-fuel categories that typically carry far thicker margins than electricity resale. This is directionally consistent with what operators are already doing: Walmart's W+ members get 10% off posted EV pricing at pilot sites, and convenience chains such as ON the RUN are folding charging into existing loyalty rails rather than pricing it as a standalone product.
4. A Pricing Playbook For The Forecourt
01 Price to utilization, not just to the competitor's post. A site running at 5% capacity factor has a fundamentally different cost floor than one at 40% — static competitor-matching ignores that gap entirely.
02 Treat the kWh margin as a funded lever, not a standalone P&L. Bundle discounts should be sized against non-fuel margin capture, per Figure 3, not against the electricity cost alone.
03 Segment tariffs by dwell format. A DCFC quick-stop site and an L2 grocery-anchor site face different guardrails and should carry different bundle designs, not one flat rate.
04 Instrument competitor and utility tariff moves together. Demand-charge exposure and rival kWh pricing both move the breakeven point — track them on the same cadence.
05 Test threshold-triggered offers before blanket cuts. A $0.05/kWh discount tied to a small in-store spend outperforms an across-the-board price cut on both margin and basket size.
Fuel pricing spent two decades converging on real-time, competitor-aware automation. EV charging pricing is at the stage fuel pricing was a decade ago: posted rates, thin tariff visibility, and bundles built on instinct rather than measured uplift. The forecourts that price the full stack — tariff, dwell time, and bundle — as one system, rather than three separate decisions, will be the ones that make EV charging a genuine profit center rather than a break-even amenity.
ChargeUp Europe, Pricing Explained & industry reporting (2026); NACS/C-Store Dive, EV charging & dwell-time coverage (2025–2026); Transportation Energy Institute, 2026 State of Retail-First EV Charging (with Electric Era & Paren); Driivz, “EV Charging: The $151bn Opportunity for Fuel Retailers” and related analysis (2026); ScienceDirect, “Economics of electric vehicle corridor fast charging in the United States” (2025); NASEO, “Demand Charges & Electric Vehicle Fast-Charging”; Paren, State of the US EV Fast-Charging Industry Report; Eleport, EV Charging Cost Analysis – Europe (2025–2026); EV Connect, EVoucher loyalty program coverage (2026).
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