The average real-world electric driving share is about 45%–49% for private (phev) cars and about 11%–15% for company cars
45-49% on privately owned cars isn’t rarely, but 10-15% on the corporate side totally is. However I can also understand employees not wanting to give their company free electricity every night, while simultaneously companies do not have plans in place for employees to charge at work.
Company purchasing managers would be better off just buying regular hybrids if they’re not going to set up a plan to keep these charged, otherwise they’ll never get the financial benefits that sold them on the phev in the first place.
This was a problem with government owned Volts, they reimbursed for gas as this was already happening for the rest of the ICE fleet but had no way to reimburse for charging. Would not be surprised if this trend is the same for many company fleets too. Fix that and you would probably see similar numbers to private ownership.