Electricity supply that by law must be offered by the local utility or the LDC to all consumers. The rate for default service is still regulated by the state PUC, and in most cases equates to the Standard Offer Rate. see also: Standard Offer Rate

The electric generation service provided to any consumer who does not or is unable to arrange for or maintain electric generation services with an electric supplier.

If you have moved or switched suppliers since 1998 and have gone back to your original service company, you are on default service. Default service customers pay a "market price" for their electricity supply, which is generally higher than the standard offer.

a safety net service designed to provide energy for short periods of time. However, there is no limit on the length of time you may remain on this service. Default power service will always be available to ensure that customers receive uninterrupted power when they switch from one electricity supplier to another. If for any reason consumers are temporarily without an electricity supplier, or if they choose not to choose an electricity supplier, they will automatically receive default power service.

means electricity supply that is available to customers who are otherwise without an electricity supplier and are ineligible for transition service. RSA 374-F:2 I-a