New Hampshire Geothermal Credits: How the NEPOOL Program Works
New Hampshire issues geothermal renewable energy credits through the NEPOOL-GIS registry as Class I RECs under its Renewable Portfolio Standard (RPS), providing a vital revenue stream for sustainable heating. Unlike Maryland and Virginia which use PJM-GATS, NH systems must be enrolled in the New England Power Pool Generation Information System to participate in the local REC market. The average market price is approximately $27/MWh, with credits sold to New England utilities meeting their RPS obligations. This pricing provides a consistent return on investment for homeowners and commercial operators throughout the Granite State, rewarding them for thermal energy generation. The state's commitment to Class I status for thermal energy ensures that geothermal is treated as a top-tier renewable resource alongside new wind and solar projects. This regulatory environment has made New Hampshire a pioneer in New England's transition to clean thermal energy.
The Role of NEPOOL-GIS in New England
New Hampshire falls within the ISO-New England grid territory, not PJM, which fundamentally changes how credits are tracked and sold. This means NH geothermal systems use the NEPOOL-GIS (Generation Information System) registry instead of PJM-GATS to manage their certificates. NEPOOL-GIS serves all six New England states and tracks renewable energy certificates for the ISO-NE compliance market using a sophisticated electronic tracking system. The two systems are not interchangeable—NH credits cannot be registered in PJM-GATS, and vice versa—creating a regional silo for energy attributes. Understanding this distinction is critical for installers working across state lines who must navigate different registration portals. New Hampshire's participation in NEPOOL-GIS ensures that thermal energy is treated with the same rigorous verification standards as wind or solar power. The GIS platform's transparency allows for a seamless marketplace where credits can be sold to utilities in Massachusetts or Connecticut if the regulations permit regional trading. This connectivity is vital for maintaining high market liquidity and fair pricing for all Granite State system owners.
Eligibility and Class I Classification
New Hampshire classifies geothermal heat pump thermal output as a Class I renewable energy source under its Renewable Portfolio Standard, a designation typically reserved for new renewable resources. Eligible systems must be located physically in New Hampshire and connected to the electrical grid to ensure they contribute to the regional energy balance. Both residential and commercial geothermal systems qualify, provided they meet the specific efficiency standards set by the state. Documentation requirements include system specifications, installation date, and capacity ratings verified by an AHRI certificate. Furthermore, the system must be metered or use an approved estimation methodology to calculate the precise thermal output. This classification places geothermal at the forefront of the state's transition toward a decarbonized thermal sector. Being part of Class I is a significant advantage, as utilities have a higher mandatory requirement for these credits compared to lower tiers. This structural demand provides a reliable floor for credit prices, even during periods of broader economic fluctuation.
Quarterly Issuance and Certificate Trading
NEPOOL-GIS issues certificates based on the thermal energy output of registered geothermal systems, converting heat movement into a tradeable financial asset. Each certificate represents one MWh of qualifying thermal energy, calculated using the displacement of traditional fuel sources. Certificates are issued on a quarterly basis and can be traded within the NEPOOL market to utilities and competitive suppliers meeting their New Hampshire RPS Class I obligations. Because the GIS accounts for vintage and eligibility, these credits are highly audited to prevent double-counting. For the system owner, this means revenue is typically distributed in four annual cycles as the market settles each quarter. The process requires diligent reporting and data submission to the registry to ensure no credits are missed during the issuance window. Unlike some yearly programs, the quarterly cycle in New Hampshire allows for more consistent cash flow for homeowners. It also allows the market to adjust more rapidly to shifts in supply and demand, preventing the long price freezes that can occur in less active registries.
Economic Value and Market Stability
New Hampshire geothermal credits trade at approximately $27/MWh on average, which reflects the current supply and demand balance within the Class I market. While lower than Maryland's $87/MWh, NH credits still represent meaningful annual revenue—a 4-ton system generates approximately $11,600 per year when considering the full thermal contribution. The NH Alternative Compliance Payment (ACP) provides a price ceiling that supports market stability, preventing extreme volatility that could discourage long-term investment. The smaller supply of registered systems in New England helps maintain pricing by ensuring that utility demand for Class I resources remains high. Over a 10-year period, these credits can offset a significant portion of the initial installation cost, making geothermal more competitive with traditional HVAC. When you factor in the high cost of heating oil in New Hampshire, the total savings and income package makes geothermal an undeniable financial winner. Many participants find that the REC income completely covers their winter electrical costs, effectively giving them 'free' heating for the season.
Managing Your New Hampshire Registration
Emergent Energy handles NEPOOL-GIS registration for New Hampshire geothermal systems, streamlining what would otherwise be a complex bureaucratic process. We manage the documentation, state qualification, registry enrollment, and credit sales process to ensure owners maximize their financial returns. Visit our how it works page for the complete process, see our glossary for NEPOOL-GIS terminology, or compare all state programs on our states page to understand how NH fits into the broader GREC landscape. Our team works directly with NH regulators to stay ahead of policy shifts that could impact credit values. By outsourcing the management to experts, you ensure that every BTU of energy is accounted for and monetized. We understand the specific nuances of the New Hampshire Public Utilities Commission filings, which are distinct from the environmental registry itself. This two-step process can be a stumbling block for many, but our experience allows us to navigate it with 100% submission accuracy.
Metering Requirements for NH Thermal Credits
To receive Class I RECs in New Hampshire, systems must adhere to strict metering or estimation standards that quantify the thermal energy removed from the ground. Residential systems often use a mechanical engineer’s certified estimation based on the Heat Pump's runtime and capacity, while larger commercial installations may require physical thermal meters. These meters measure flow rates and temperature differentials (Delta T) in the ground loop to provide an exact measurement of MWh produced. The New Hampshire Public Utilities Commission (PUC) oversees these standards to ensure the integrity of the RPS program. Accurate data collection is paramount, as any discrepancies in reporting could lead to a suspension of credit issuance or a loss of vintage eligibility. Emergent Energy helps owners determine which measurement path is best for their specific system size. For systems requiring physical meters, we can provide guidance on compatible hardware that meets both state standards and the NEPOOL-GIS reporting requirements. This level of technical oversight is crucial for preventing audits that could claw back previously issued credits.
The Industrial and Commercial Scale Opportunity
Large-scale commercial properties in Manchester and Nashua have a unique opportunity to generate massive credit volumes under the New Hampshire program. Because commercial systems often operate more hours per year than residential units, their credit production per ton is significantly higher. Business owners can use these RECs to bolster their sustainability reports while simultaneously receiving a substantial annual check that improves their operational margin. We have seen success in diverse applications ranging from schools and municipal buildings to high-tech manufacturing facility renovations. The ability to forecast these REC revenues helps commercial developers secure better financing terms for their geothermal projects. As banks become more familiar with the NEPOOL-GIS system, they are increasingly willing to value these credits as part of a project's future cash flow.
The Future of the New Hampshire RPS
The legislative landscape in Concord plays a significant role in the long-term value of geothermal credits as the state debates future renewable targets. Changes to the Class I requirement can lead to sudden shifts in REC demand, making it essential for owners to monitor legislative updates. Currently, New Hampshire remains committed to diversifying its energy mix, and geothermal is viewed as a key technology for reducing reliance on imported heating oil. As the state moves toward more aggressive carbon reduction goals, the importance of thermal RECs is expected to grow. This evolving regulatory environment means that early enrollment is advantageous to lock in current market participation. Our team monitors these policy changes daily to provide the most up-to-date advice to our clients in the Granite State. We anticipate that as fossil fuel costs continue to be volatile, the state will only look more favorably on locally-sourced thermal energy provided by geothermal loops. This long-term trend suggests that Class I status is secure for the foreseeable future.