Getting started

National Grid is committed to maintaining the safety and reliability of the system, so please contact us at least 24—36 months prior to your desired in-service date. In order to begin the interconnection process:

  1. Review National Grid’s Gas quality standards table below

  2. See National Grid's RNG knowledge pages for additional information on seminars and the interconnection process

  3. Submit a pre-application using the button below

Once we have received your application, we will contact you to discuss the next steps.

Submit pre-application

Our plan: National Grid net zero by 2050

Climate change is the greatest challenge facing the world, our country, and our region. National Grid supports our states’ goals in reducing greenhouse gas emissions economywide. We recognize that decarbonizing our electric and gas systems will require resolving many questions and seeking new partnerships, technologies, energy policies, utility regulatory models, and transformative investments. Though we do not have all the answers, we are eager to collaborate on solutions and to step up in addressing these challenges. We aim to achieve net zero greenhouse gas (GHG) emissions by 2050, including our own operations and emissions that result from the sale of electricity and gas to our customers.

Decarbonizing the Gas Network with Renewable Natural Gas and Hydrogen is one of the key pillars in achieving this goal. We will transition away from delivering traditional geologic natural gas to our customers to providing them with low- and zero-carbon renewable natural gas (RNG) and hydrogen. We will scale utilization of RNG from sustainable biomass feedstocks (e.g., wastewater, landfills, food waste, livestock manure, and other), looking for the most readily scalable and affordable supplies for our customers.

Learn more about our fossil-free future

What is RNG?

RNG is derived from a variety of organic waste materials used in daily life. For example: food waste, biodegradable plant material, animal waste, paper, cardboard, and wood. This abundance of renewable energy sources is important since wind and solar energy are intermittent and often rely on supplemental supply of power when the wind isn’t blowing, or the sun isn’t shining.

Renewable natural gas can play a significant role in the future of energy. While the biggest driver of the focus on renewable energy is greenhouse gas reduction, what makes renewable gas more compelling is that it also provides the following:

  • Enhances diversity of supply

  • Stimulates local economy and creates green jobs

  • Provides a real and innovative solution for using local waste resources to produce renewable energy

  • Reduces waste buildup

  • Creates a more efficient use for the fuel

  • Leverages the existing gas network to deliver a renewable fuel

Gas Property



Heating Value



Moisture Content

< 7



< 2

% mole


< 0.2

% mole

Total Inerts

< 4

% mole

Hydrogen Sulfide (H2S)

< 4


Wobbe Number

1270 - 1400


Note: this does not capture all National Grid Gas quality standards. Based on the type of gas, other trace constituent requirements will need to be taken into consideration. Meeting these standards does not ensure that a RNG project will be approved. RNG projects must be confirmed through an interconnection study with National Grid for approval.

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