There’s also the question of money. Installing a EVSE device to ensure no-one overloads the power supply will cost money.
Not necessarily. They may not need anything nearly as complex as a centralised load management system. It might be enough to install a cheap timer and relay. That is what our OC has. The power to the parking area is simply off during four hours of the evening peak demand period. Power is available for charging for 20 of 24 hours. The power supply to a site is generally sized to slightly exceed the peak demand. Outside a few hours of peak demand, there is plenty of headroom for additional loads such as EV charging.
And there’ll probably be a periodic licence fee for the software in it and perhaps for occasional updates.
With the system we have (relay and timer), there is no subscription or software required.
Lastly, are you sure the other 8 units will be happy to pay for your electricity while continuing to buy their own petrol? If they aren’t perhaps you’ll also need an EFTPOS device wired in.
With only 9 units, you don’t need a fancy solution. Where I am, we have a simple kWh counter in line with each power outlet in allocated parking spaces. As treasurer, I periodically read the meters and fill in a simple spreadsheet that subtracts the previous reading, multiplies by the c/kWh rate and spits out the amount to bill each EV driver.