UK News
Labour ministers will commit to the start date next week after previously watering down the new protection.
Ofgem says the investment will help lower reliance on imported gas and make wholesale energy cheaper.
Some analysts said the score was a mere fluctuation in the run-up to the Budget.
Some 98 million passengers entered and exited the station until the end of March, the regulator says.
The regulator tells the BBC it has been emailing AVS Group Ltd without reply since July.