ACME Solar Holdings has secured a Rs 2,491 crore long-term refinancing facility to reduce the cost of debt for renewable energy projects.The projects have been secured from SBI and REC at a reduced weighted average interest rate of 8.8%.The refinancing initiative helped improve the credit profile and obtain a higher credit rating for Andhra Pradesh and Punjab entities.ACME Solar Holdings aims to achieve a capacity of 6970 MU within the next three years.