How busy are the charging points in the Middelburg region?

How we measure this

The figures come from DOT-NL, the Dutch national access point for charge point data, run by NDW (Ministry of Infrastructure and Water Management, CC0). Operators publish there how many bays they have and how many are free. We fetch that every five minutes and keep the count, so a series builds up.

A status is only refreshed when something happens. Operators do not send updates on the clock; they report a change when someone plugs in or unplugs. A charging point reported as occupied at 22:00 that has said nothing since is therefore still occupied — otherwise there would have been an unplug report. That is why we count every location whose feed reported something in the past 24 hours: right now — locations with — charging points between them. Feeds that have been silent for more than a day are stuck on an old state and are left out (currently — locations).

Occupied means: not available. Usually a car is plugged in, charged or still charging. Occasionally a point is out of order or reserved; the feed does not tell the difference, so neither do we. Separately, we show how many locations reported a change in the past hour (now —): that says something about how busy the turnover is, not about how many are occupied. At night that number is small, as it should be.

The count is shown everywhere. If the number of active feeds drops, a change in the percentage is just as likely a change in who is reporting. Without that number a chart is a pretty picture with nothing to hold on to.

What we do not measure. Only public charging points in an area of roughly twelve by thirteen kilometres around Middelburg, as operators report them to DOT-NL — private and home chargers are not in the feed.

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