Manx Utilities says it's passing on a £10 million fall in wholesale costs to customers.
Last year, the organisation said it would be putting prices up in April, but earlier this month reversed the decision and said it would drop prices instead.
In the House of Keys this week, Arbory, Castletown and Malew MHK Jason Moorhouse quizzed chairman John Wannenburgh MHK about what had led to the change of heart.
Mr Wannenburgh revealed the price of power had fallen:
Yacht club worries over lifeboat retirement
One nuisance cyclist ticketed in more than three years
New ministerial post created by chief minister
Huge floating book fair to arrive in Douglas next month
Stay safe for Hop Tu Naa tonight
Special Olympics fundraiser needs you
Peel ready for bonfire and fireworks later
Government: "UK never told us about child murderer"