The complainer: Image: BBC Scotland
While walking the dog, I’ve had further thoughts on my previous post. Here’s what BBC Scotland’s Disclosure team claim:
Almost a quarter of Scotland’s public charging points for electric vehicles (EVs) were faulty when BBC Disclosure did spot-checks on the network.
A snapshot over a six-week period of the state of the 2,200 chargers installed using Scottish government grants uncovered issues at 535 units.
Faults ranged from broken plugs and screens to the system being offline.
Transport Scotland said it would review the data but its own measurements suggested only a 2% fault rate.https://www.bbc.co.uk/news/uk-scotland-63371759
To do a ‘spot-check’ and conclude that almost a quarter were faulty, you’d need to check all 2 200 within the same hour. A charging point can be offline one minute and on the next.
In the space of a six-week survey, a charging point could be faulty for one day and then repaired for the rest of the survey period.
So, unless you can reliably, using an online app, have it tell you how many are faulty at the same time time, you cannot claim what BBC Scotland have claimed.
Maybe the software can do this and maybe I’m being the old guy again. Readers will advise.
Because, if it took the researchers six weeks to check the 2 200 charging point, then that’s a sample of 42 days times 2 200 or 92 400 days in which checks found only 535 faults.
Maybe the official records use a more reliable method of data collection?