Millions of consumers in New York and New England can now receive their power bills online through the e-bill distribution service from Fiserv Inc., if their financial institution is one of the more than 3,000 on the Fiserv bill-pay network.

National Grid, which serves 3.3 million electricity customers and 3.4 million natural gas customers in Massachusetts, New Hampshire, New York and Rhode Island, has expanded its electronic billing with the Fiserv service.

E-bills contain the same information as paper bills, and are delivered directly to the online banking site and stored there for 12 months or longer. The service allows National Grid customers to review their bill online, select payment dates and use features such as e-mail due date reminders.

“Delivering bills to financial institution sites is an important complement to our existing billing capabilities, and helps enhance customer satisfaction,” said Jeff Martin, director of billing and systems at National Grid.

“Now that National Grid has joined the Fiserv network of more than 400 billers, they can provide added convenience to customers who choose to view and pay their bills at their financial institution website,” said Jardon Bouska, president of biller solutions at Fiserv.