National Grid Office in Hewlett, NY (Nassau County)
We detail how to contact National Grid in Hewlett, Long Island along with how to start or cancel service, choose an alternate ESCO, and make sense of your monthly bill.
National Grid's Hewlett, Long Island Office
You can speak to a National Grid customer service representative in person to resolve issues with billing, nautral gas or electricity service, and more at their Hewlett location.
455 Mill Road
Hewlett, NY 11557
The office is open from 9:00 a.m. – 5:00 p.m., Monday to Friday.
National Grid Long Island Phone Number
The phone number for National Grid in Long Island is 1-800-930-5003, and office hours are from Monday - Friday, 7:00 a.m. to 5:00 p.m.
Other Nearby National Grid Offices
- National Grid in Jamaica, NY (Queens) Distance: 6.3 mi.
- National Grid Office in Bellmore, NY (Nassau) Distance: 8.9 mi.
- National Grid Office in Brooklyn (Brownsville) Distance: 11.2 mi.
Signing up for National Grid Service in Long Island
If you are moving into a new home in Hewlett or Long Island, you will need to call National Grid's customer service line or visit your local office about 7 days before your move in date to set up national gas and/or electricity service. You will need to provide information including:
- Full name
- Social security or passport number
- New address
- Planned move in date
- Phone number
- May need to provide a lease copy
You can reach National Grid customer service at 1-800-930-5003, from Monday - Friday, 7:00 a.m. to 5:00 p.m.
Choosing an Alternative ESCO Supplier
National Grid is your local utility in Long Island, meaning they are your default provider of natural gas and/or electricity. National Grid automatically provides the following services:
- Delivery, or the cost of getting energy to your home
- Supply, or the cost of energy you consume and customer service
Be sure to set up your National Grid account before deciding on an ESCO, since your ESCO will need your National Grid account information to coordinate service. Most ESCOs will not charge a fee to open a new account, but you should be aware of other common contract terms. Learn more about how ESCOs work.
You will have the opportunity to choose between variable and fixed rate plans with most ESCOs, however we recommend fixed rate plans across the board.
If you are moving out of National Grid service area, you will need to call customer service at least 3 days in advance to be sure that service is turned off in time. A technician will need to come to your home for natural gas customers, to get an accurate reading of your meter for your final bill.
In order to avoid early termination fees with your ESCO, which are common, you may need to notify your ESCO that you are moving 30 days or more in advance. Be sure to look at your ESCO's contract conditions for specific instructions.
Bill Charges with National Grid
The New York Public Service Commission (NYPSC) regulates all rates with National Grid, which means that your rates will not change unless NYPSC has determined that actual costs of doing businesses have changed for National Grid.
The below graph shows the average division of charges on a National Grid bill.
About National Grid
One of the largest utility companies in the US, National Grid USA's subsidiaries include Niagara Mohawk and KeySpan Gas. In addition to serving customers in Massachusetts and Rhode Island, National Grid's local service area includes New York City, much of Long Island, Buffalo, Syracuse, and many other towns across upstate New York.
Contact information of National Grid in Hewlett
National Grid agency closest to Hewlett is located at:
455 Mill Rd
Contact National Grid in Hewlett:
You can contact local Hewlett National Grid employees: