City of Portland Maine issued the following announcement on May 8.
The City of Portland has opened a new temporary parking lot at 2 Commercial Street. The Ocean Gateway parking lot will be available for daily use through October. The rate is $15 for every 24 hours, credit cards only. Customers can pay at the kiosk inside the lot or via our mobile parking app, Passport Parking (ppprk.com / zone 7117).
Original source can be found here.
Source: City of Portland Maine