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New Hampshire Department of Environmental Services

Calculating Greenhouse Gas Emissions
Find out how much your energy use is creating greenhouse gas emissions by using one of the following calculators.

Calculation Tools for Business and Industry

Energy Star GraphicTrack Your Energy Savings

Managing your energy portfolio is a critical component of your successful business. This is particularly true if you are in the process of investing to improve efficiency or upgrade to systems intended to provide measurable amenity to tenants, customers, or employees.

The effectiveness of these investments should not be left to chance. Use EPA’s on-line tool, to develop, track, and evaluate your organization’s approach to reducing energy costs over time.

Benchmark Your Building

ENERGY STAR® benchmarking is changing the building industry’s perception of energy performance. For the first time, through ENERGY STAR, you are provided with an easy way to obtain a meaningful comparison of your buildings' energy performance to that of similar buildings throughout the US.

As with all business benchmarks, the key is to benchmark regularly while continuously taking action to improve. For commercial buildings, energy performance is rated on a 1-to-100 scale where a score of 50 signifies energy performance better than 50 percent of similar buildings.

Applied across your portfolio, benchmarking provides the foundation for fundamental property management decisions, ranging from identifying top performers which exemplify best practices to prioritizing the best upgrade investment candidates.

For more information, see Energy Star.

Tools for Calculating Greenhouse Gas Emissions
The following are available software packages for calculating greenhouse gas emissions. NHDES does not endorse any particular product but encourages to research these and any others to find the tools that meet your particular business needs.

The Greenhouse Gas Protocol
The Greenhouse Gas Protocol is a corporate accounting and reporting standard. It provides some easy-to-use spreadsheets for calculating greenhouse gas emissions from various sources such as: stationary combustion sources, mobile combustion, production of nitric acid, production of lime, etc. See

The Cities for Climate Protection Greenhouse Gas Emissions Software
Torrie Smith Associates developed this software for the International Council for Local Environmental Initiatives (ICLEI). The demonstration allows some limited use to test the software's capability. See

Torrie Smith Associates Software for Business and Institutions
The Greenhouse Gas Strategy Software developed by Torrie Smith Associates quantifies greenhouse gas emission reductions from efficiency improvements, fuel switching, district heating, business travel, and various other measures. See

Department of Energy’s Voluntary Reporting of Greenhouse Gases
The Voluntary Reporting of Greenhouse Gases Program, created under Section 1605(b) of the Energy Policy Act of 1992 (EPACT), affords an opportunity for any company, organization or individual to establish a public record of emissions, reductions, or sequestration achievements in a national database. Reporters can gain recognition for environmental stewardship, demonstrate support for voluntary approaches to achieving environmental policy goals, support information exchange, and inform the public debate over greenhouse gas emissions. Electronic Reporting Form and Public Use Database can be found at

NH Department of Environmental Services | 29 Hazen Drive | PO Box 95 | Concord, NH 03302-0095
(603) 271-3503 | TDD Access: Relay NH 1-800-735-2964 | Hours: M-F, 8am-4pm

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