Technology
Operating a charging network is a property and electricity business with a software layer on top. The equipment is bought; what is difficult is finding sites people will stop at, getting a connection large enough to serve them, paying for the power in a way that does not destroy the economics, and making sure a session that starts actually finishes.
In one sentence
Charging network operation is the business of siting, connecting, running and billing public charging stations, including the back-end software that manages sessions, pricing, roaming and site power.
The binding constraint is usually the grid connection rather than the equipment. A site with several high-power bays needs a connection of a few megawatts, which may mean a new transformer, a new feeder and a wait measured in years. Utility demand charges make it worse: billing is based on the highest power drawn in a period, so a bank of chargers used simultaneously creates precisely the peak the tariff targets. A stationary battery on site charges steadily and discharges during sessions, cutting that peak and sometimes allowing a much smaller connection.
The software has to do more than take payment. It authenticates the vehicle or the driver, negotiates the session, manages how much power each bay may draw as others arrive, prices it, settles with roaming partners so that a card from one network works on another, and reports faults before a driver finds them. Most reported charging failures are authorisation and communication failures rather than power failures.
A charging site has a large fixed cost — the connection, the equipment, the land — and a small marginal cost per session. Profitability is therefore almost entirely a question of how many hours a day the bays are busy, which makes siting, and being on the route people actually drive, worth more than any hardware advantage. It is why networks cluster in places that already have traffic rather than filling gaps evenly.
Where tariffs bill on peak power, a site drawing its full rating for a few minutes a day pays as though it did so continuously. Buffer batteries, power sharing that caps site draw, and scheduling are all responses to a billing structure rather than to a technical limit, and the tariff a site is on can matter more to its economics than its equipment.
Networks settle sessions between each other through roaming agreements and clearing houses, so a driver with one account can charge on another operator's hardware. It is an administrative layer, invisible when it works, and the source of a large share of failed sessions when it does not — an authorisation that times out looks to the driver exactly like a broken charger.
1 of these is marked as a chokepoint: a handful of qualified suppliers, a multi-year lead time, or a single geography.
Frequently the binding constraint on how many bays a site can host and how fast they can run, and the item with the longest lead time by a wide margin.
Interconnection queuesNetworks buy their equipment, so their availability figures are partly a property of a supplier they chose years earlier.
Station hardwareA battery on site converts a peaky load into a steady one, which changes both the connection size needed and the tariff paid.
Utility-scale batteriesAuthorisation, plug-and-charge certificates and inter-operator settlement run on agreed protocols, and most failed sessions are failures in this layer rather than in the power path.
Charging standardsLand beside routes people already travel, with space to manoeuvre and something to do for twenty minutes, is scarce, expensive and the single largest determinant of utilisation.
What each company supplies at this step, and — where a public figure exists — its share of this specific market — with what that share measures, the period it covers and who published it. Some rows also show the company’s own reported revenue for the segment covering this step, which is a different thing: it says how much this business matters to that company, not how much of the market it holds. Not a ranking and not a recommendation.
Operates the largest and most reliable fast-charging network, now opened to other manufacturers.
Operates public fast-charging networks in the United States.
Charging Revenue Retail segment — 50.0% of EVgo’s reported revenue ($133.9M)FY2025 · company filings · not a market share
Operates the back-end software much of the industry's hardware is managed through.
Operates and sells charging equipment across owned and host-owned sites.
Builds charging sites on and around its fuel retail estate.
Operates charging networks alongside and in place of fuel forecourts.
Operates one of China's two largest public charging networks through its TELD subsidiary.
Operates motorway fast-charging sites built around long-term site leases.
Builds a shared high-power network funded jointly by several vehicle manufacturers.
Whether utilisation rises enough to make public fast charging reliably profitable without subsidy.
Whether buffer storage becomes standard at high-power sites and changes what connection a site needs.
Whether manufacturer-funded networks change who owns the customer relationship at the plug.
Each page explains one technology in plain language, states what it depends on, and names companies by what they supply at that step. Company roles are described qualitatively and deliberately carry no market shares, revenue figures or rankings — those change faster than an explainer can, and a stale number is worse than none. Ticker links point at company pages on this site and are provided for reference only.
Nothing here is investment advice, a recommendation, or a forecast. A company named on a page about a technology is not thereby a good investment, and the chokepoints described are structural facts about supply chains rather than predictions about prices. Technology moves; where a page describes something as unresolved or in development, that was true when it was written.
Plutux no es un asesor de inversiones. Los datos de mercado y el análisis generado por IA son solo informativos y educativos, no asesoramiento de inversión. Aviso legal