How EVDIR is built

Every station here is EVDIR's own record. It starts from crowdsourced reports — drivers telling us where a charger is, what plugs it has and what it cost — and is checked against our own research: the operator's published listing, its tariff page, and photographs of the equipment. Where those disagree, the record keeps the value we could confirm and the disagreement is left out rather than averaged.

We do not merge in operator marketing claims. Where an operator profile appears on a network page, it is labelled as the operator's own account, with the date it was read, and kept apart from the counts.

The published copy covers 23 states and 1,801 cities. That is the extent of our curation so far, not a claim that no other public chargers exist in the country.

One station is one record, at one location. Its stalls are the dedicated charging stalls the record reports. Its outlets are the site sockets — a campground pedestal, an RV hook-up, a wall socket — and they are never added to stalls. In this copy there are 21,797 stalls and 2,034 outlets, and the two figures are quoted separately everywhere.

45 records are flagged closed. Their pages still render for anyone following an old link, but they carry a noindex hint, stay out of the sitemap and are not counted as an open alternative.

Connector values are normalised to a fixed set: J1772, CCS1, NACS, CHAdeMO, NEMA 14-50, NEMA TT-30 and wall outlets, with CCS2 kept in the filter only. One station can carry more than one type, so connector counts overlap and adding them together gives more than the number of stations.

Peak power is recorded in kilowatts. A station under 50 kW is counted as Level 2, one at 50 kW or more as DC fast, and one at 150 kW or more as ultra-fast. Those bands are computed from the recorded figure; the page does not infer a speed from a connector type.

Only per-kWh tariffs are used. A value is treated as a listed price when it is greater than zero and no more than $2.00 per kWh; anything outside that band reads as “price not listed” rather than being corrected or guessed. Session fees, connection fees, idle fees and parking charges are not included, and some networks bill by the minute or by the session instead.

A state is ranked on the cost page only when at least 10 of its stations quote a price, a network is listed only at 20 priced stations, and a network median is cited only at 50. Below those samples a median describes a few sites rather than a market.

The national median in this copy is $0.35 per kWh across 3,805 priced stations.

A station photograph is published where a crowdsourced report includes one we have permission to display; 4,508 stations in this copy have one. Photos are resized for the web and are not re-captioned as if they were taken for this site.

The ingest writes one build-time copy of the data. Every count, hub, median, page and structured-data block on this site is computed from that copy at build time, and the footer states the month the copy was written. The site does not query a database while a reader waits.

• Live availability is not tracked; a station open in this copy may be busy, broken or offline now.
• Coverage follows our curation: 23 states are present and others are not.
• Addresses, hours and prices are the values we could confirm. They can change after the build.
• A network with fewer than 20 stations, a city with fewer than five, and a place type below its threshold have no page of their own.

If a record here is wrong, the corrections page explains the fastest route to fixing it.