Beyond kWh: How EV Charging Companies Actually Make Money
The EV charging industry has a dirty secret: selling electrons is a terrible business on its own. The margin on electricity at a public charger — even at premium per-kWh rates — rarely exceeds 15–20 percent after accounting for grid demand charges, equipment depreciation, maintenance, and payment processing. For an industry that requires massive capital expenditure to deploy hardware across thousands of locations, this margin structure is a challenge. At Güil Mobility Ventures, we have spent significant time dissecting how the most successful charging companies are building sustainable business models beyond simple energy retail.
The base layer: energy sales and demand charges
Understanding charging economics starts with the electricity itself. A typical DC fast charger in Europe or North America purchases electricity at $0.08–$0.15 per kWh (depending on the market and time of day) and sells it at $0.35–$0.55 per kWh. The gross margin looks attractive until you layer in demand charges — utility fees based on peak power draw rather than total energy consumed. A single 150 kW charger pulling peak power for even a few minutes per month can generate demand charges of $1,000–$3,000 monthly, dramatically compressing margins during periods of low utilization.
This demand charge problem is the single largest economic challenge in public DC fast charging, and the companies solving it — through battery buffer storage, smart load management, and innovative utility rate negotiations — are building meaningful competitive advantages.
Subscription and membership tiers
The most successful CPOs have adopted subscription models that smooth revenue and increase customer lifetime value. Electrify America offers a Pass+ membership at $4 per month that reduces per-kWh pricing by roughly 25 percent. Tesla’s Supercharger network implicitly bundles charging value into the vehicle purchase price. Fastned offers subscription tiers that drop per-kWh rates for committed users.
These subscription models serve a dual purpose: they generate predictable recurring revenue, and they create behavioral lock-in that increases station utilization. A subscriber who has already paid a monthly fee is more likely to charge at the network’s stations, improving asset utilization — the single most important driver of charging station profitability.
Fleet contracts: the anchor tenant model
Commercial and fleet customers represent the highest-value segment for charging operators. Fleet contracts provide predictable, high-volume demand that dramatically improves station utilization economics. A delivery fleet that charges 50 vehicles nightly at a depot creates steady baseload demand that spreads fixed costs across far more kWh than sporadic public use.
Companies like ChargePoint and BP Pulse have built substantial businesses around fleet charging infrastructure, providing hardware, software, energy management, and billing services as an integrated package. The fleet segment also enables innovative business models: some operators offer charging-as-a-service where the fleet operator pays a fixed monthly fee per vehicle rather than per-kWh, transferring energy price risk to the charging provider.
Retail media and co-location revenue
A DC fast charging session lasts 20–40 minutes — an eternity in the attention economy. Charging operators are increasingly recognizing that captive driver attention has commercial value. Digital screens at charging stations display advertising, and co-located retail spaces (convenience stores, cafes, parcel lockers) generate rental or revenue-sharing income.
Tesla has pioneered the co-location strategy with its Supercharger lounges, and Fastned’s architecturally distinctive solar-canopy stations are designed explicitly to attract premium retail tenants. Our analysis suggests that ancillary revenue from retail and media can contribute 10–20 percent of total station revenue at high-traffic locations — a meaningful supplement to energy margins.
Grid services and demand response
As charging networks scale, they become significant flexible loads on the electrical grid. Forward-thinking operators are monetizing this flexibility through demand response programs, where they curtail or shift charging load in exchange for payments from grid operators. In markets with real-time energy pricing, operators can also engage in energy arbitrage — purchasing electricity during low-price periods (overnight, midday solar peaks) and selling charging services at higher-margin times.
The most sophisticated operators combine on-site battery storage with solar generation and grid services to create micro-energy-trading businesses at each charging location. This multi-revenue-stream approach is what separates viable long-term charging businesses from commodity electricity resellers.
Our investment thesis
At Güil, we look for charging companies that have cracked the multi-revenue-stream model: energy sales plus subscriptions plus fleet contracts plus ancillary services. Single-revenue-stream operators face margin compression as competition intensifies. The winners will be those that treat each charging location as a multi-sided platform, extracting value from drivers, fleet operators, advertisers, grid operators, and retail tenants simultaneously.