Delivery of the Swing vehicles is due to begin in October.
Each 30.5m-long five-section vehicle will accommodate up to 207 passengers, 40 of them seated.
The order has been 40%-financed by the European Union (EU).
MPK Lodz signed a Zlotys 166m ($US 45.8m) contract with Pesa on December 30 for 22 low-floor LRVs, which will be used on the Polish city's 120km metre-gauge tram network.
Delivery of the Swing vehicles is due to begin in October.
Each 30.5m-long five-section vehicle will accommodate up to 207 passengers, 40 of them seated.
The order has been 40%-financed by the European Union (EU).