Mumbai: India has extended a line of credit of $75 million (over Rs 500 crore) to Cuba for financing solar parks. An agreement signed between Export-Import Bank of India (Exim Bank) and Banco Exterior De Cuba in July last year came into effect from December 12, the RBI said in a statement on Thursday. Under the LoC, the terminal utilisation period is 60 months after the scheduled completion date of the project.