New Hampshire Business Energy Costs

New Hampshire has had retail electric competition since restructuring in the late 1990s, and the market matured further when the state's utilities divested their generation assets. Today every commercial customer of Eversource, Unitil, or Liberty can buy electricity from a licensed competitive supplier, while the utility continues to deliver it.

New Hampshire's distinguishing feature is its default rate. Unlike states where default supply is locked for a year or more, New Hampshire's Default Energy Service is reset on a six-month cycle. That means businesses that have never switched are effectively re-pricing their entire electricity supply twice a year, on a schedule set by someone else, with no ability to plan around it.

Who Serves You, and What You Can Shop

• Eversource New Hampshire serves the largest share of the state, including much of the Merrimack Valley and Seacoast.
• Unitil (Unitil Energy Systems) serves Concord, Portsmouth, and surrounding areas.
• Liberty Utilities serves a portion of the state and is also a significant natural gas distributor.
• New Hampshire Electric Cooperative serves rural areas. Cooperative members' access to competitive supply differs from investor-owned utility territory and should be confirmed rather than assumed.

In every investor-owned territory, delivery is regulated by the New Hampshire Public Utilities Commission and is not shoppable. Supply is where competition operates.

Default Energy Service and the Six-Month Cycle

New Hampshire utilities procure Default Energy Service competitively and reset the rate on a semiannual schedule. Because the procurement windows are fixed, the resulting rate reflects whatever the market looked like during those windows — not what your load could be priced at today, and not what your business's risk tolerance calls for.

The practical consequences for a commercial account:

• No budget certainty beyond six months. Every reset is a re-forecast. For a business with real load, that is a planning problem as much as a cost problem.
• Winter exposure lands directly. New England's cold-weather price risk shows up in whichever procurement window covers it.
• No structural choice. You cannot select term, hedge ratio, or timing. Those are exactly the decisions that produce savings in a competitive market.

Default service is a well-run backstop. It was never intended to be a procurement strategy for a business with meaningful consumption.

The New England Winter Problem

ISO-New England depends heavily on natural gas generation, and pipeline capacity into the region is limited. During sustained cold, gas is prioritized for heating, generators turn to costlier fuel, and wholesale prices spike. That risk is priced into forward contracts throughout the year, which is why New Hampshire fixed rates carry a premium relative to PJM or ERCOT markets.

For a business deciding how to buy, that premium is the whole question. A fully fixed contract transfers winter risk to the supplier and you pay for the transfer. A block and index structure hedges the base load and floats the remainder, which in ISO-NE often produces a better expected cost for a business that can absorb some variability. Full index keeps the risk. Our regional overview in ISO New England: why the region pays more applies to New Hampshire in full.

New Hampshire Segments Worth a Closer Look

• Advanced manufacturing. The state's precision manufacturing, electronics, and medical device base runs high load factors that should command tight supplier margins. See manufacturing energy procurement.
• Hospitality and seasonal tourism. Lakes Region, White Mountains, and Seacoast properties have sharply seasonal load. Seasonal shape changes both optimal term and the value of index exposure — and it is one of the shapes that default service handles worst. See hotel and hospitality energy costs.
• Healthcare and higher education. Non-curtailable, reliability-critical, high load factor. Budget certainty typically outranks marginal price here.
• Food processing and cold storage. Refrigerated load in a high-price region carries an outsized cost per square foot. See cold storage energy costs.
• Ski resorts and recreation. Winter-peaking load in the season when New England power is most expensive — the toughest profile in the state and the one that benefits most from deliberate structure.

Natural Gas in New Hampshire

Commercial gas choice is available in the state's gas distribution territories. For facilities with meaningful heating or process load — which in New Hampshire's climate is most industrial and institutional buildings — gas is often the second-largest energy line item and the one that has gone longest without being re-priced. See commercial natural gas procurement.

What to Do

• Confirm whether you are on Default Energy Service. If you have never switched, you are.
• Decide your risk posture before you shop. Fixed, block-and-index, or index is a business decision, not a supplier recommendation.
• Run a real solicitation. Identical terms, same day, every licensed supplier. Start six to twelve months before any expiration.
• Check whether capacity is fixed or passed through. ISO-NE capacity is not trivial.
• Audit the delivery side. Rate class and meter errors persist. A bill audit recovers retroactively.
• Manage demand. Demand charges are set by one interval a month and are more reducible than most facilities assume. See understanding demand charges.

Frequently Asked Questions

Can New Hampshire businesses choose their electricity supplier?

Yes, in investor-owned utility territory. Commercial customers of Eversource, Unitil, and Liberty Utilities may buy electricity supply from any competitive supplier registered with the New Hampshire Public Utilities Commission. Electric cooperative members should confirm their specific options, which can differ.

What is Default Energy Service?

Default Energy Service is the electricity supply provided by your utility if you have not selected a competitive supplier. New Hampshire utilities procure it competitively and reset the rate on a roughly six-month cycle, so it changes twice a year based on when the procurement occurred rather than on your load or your planning horizon.

Why does the New Hampshire default rate change so often?

Because the state's procurement design resets it semiannually rather than annually. That keeps the rate closer to current market conditions, but it also means a business on default service has no price visibility beyond about six months and absorbs winter market conditions directly.

Does switching suppliers affect my utility service?

No. Your utility continues to own the lines, read the meter, and restore outages regardless of who supplies your electricity. Only the supply portion of the bill changes, and there is no interruption during a switch.

Should a seasonal New Hampshire business buy differently?

Usually yes. A ski resort, summer hotel, or seasonal processor concentrates its consumption in specific months, and a contract priced against a flat annual assumption will misprice that shape. Suppliers can price seasonal load accurately when given real interval data — which is one of the clearest cases where providing good data directly lowers the quote.