Almost half of Scotland's electric vehicle charging points could be lying unused, according to a study.
The RAC Foundation said it believes about 1,100 electric cars and vans are now on the road in Scotland.
But it said official data suggested the country's charging network was running below capacity.
The foundation analysed data - which relates to one month only - from Transport Scotland.
The statistics from last August, which were released under freedom of information rules, showed that 217 of the 482 units in the ChargePlace Scotland network were not plugged into at all during that month.
The remaining 265 (55%) were used at least once.
ChargePlace Scotland is the initiative behind Scotland's free charge point network. - There were some notable exceptions to the Scotland average, however, with all the charging units in Edinburgh, Falkirk and Stirling used at least once in August.
Overall that month, there was a total of 2,885 individual charging sessions in Scotland.
Of these sessions, 46% took place in three cities - Edinburgh, Dundee and Glasgow.
found on the BBC