New London — A nearly yearlong stalemate ended on Friday with the signing of a host community agreement between the city and Ørsted and Eversource, the joint venture partners planning to use State Pier in New London as a hub for the offshore wind industry. Mayor Michael Passero signed an agreement that would secure at least $750,000 per year to the city over a seven-year period, if the project is developed as planned, with provisions for extensions up to 10 years. The agreement is a compromise from a higher number Passero had pushed for but amounts to a $250,000 a year increase from North East Offshore’s original offer. It contains provisions for an increase in payments, up to $1.5 million per year in years three through seven, linked to the purchase of more offshore wind power by the state. The more wind power the state procures, the more money the city stands to gain — up to $9 million over the course of the agreement if the state hits 1,600 megawatts. Increases in payments are also retroactive.