Can a condo association limit use of electricity in a garage?

Your answer depends on who pays the electric bill.

Most governing documents and most state condominium laws specify that 'unmetered utilities' be assessed (paid for) according to use.

If you pay the bill in your attached garage, the association cannot limit your use. If you park in a common area, open garage area in an assigned slot, and the association pays the electric bill, they may be able to limit your electric use.

Best practices dictate that you work with your association to install a sub-meter so that you can pay your own electric bill according to your use of the utility in the garage.