Greylock Energy
Greylock Energy is a privately held, ArcLight Capital Partners-backed oil and gas exploration, production, and midstream company operating approximately 4,800 wells and 2,350 miles of pipeline across Appalachia and the Rockies, serving industrial gas end users, landowners, and royalty holders.
- Company typePrivate
- Founded2017
- HeadquartersCharleston, United States
- Headcount51–100
- GTM typeB2B
- OfferingServices
What Greylock Energy does
Greylock Energy LLC is a privately held oil and natural gas exploration, production, and midstream company headquartered in Charleston, West Virginia, and backed by ArcLight Capital Partners. The company was formed in November 2017 when ArcLight acquired substantially all natural gas production and midstream assets from Energy Corporation of America and a related joint venture, and expanded its Western U.S. footprint in March 2022 by acquiring substantial assets in the Uinta and Green River Basins. Greylock operates approximately 4,800 conventional and unconventional wells, roughly 2,350 miles of pipeline, and 450,000+ net acres across Appalachia (West Virginia, Pennsylvania, Kentucky, Virginia, New York) and the Rockies (Utah), with field offices in Charleston, Greene County and Punxsutawney (Pennsylvania), and Vernal (Utah).
The company's core operations span horizontal drilling and hydraulic fracturing with in-house engineering and design, production operations across its well network, and midstream services including design-build pipelines and turnkey transportation solutions delivered directly to large industrial natural gas consumers. Supporting functions include a Land Resources division that negotiates leases with landowners and mineral rights holders, and an Owner Relations group that processes royalty payments and manages working-interest documentation. Greylock also operates properties for ECA Marcellus Trust I, which holds royalty interests in Marcellus Shale properties in Pennsylvania.
Greylock generates revenue primarily through natural gas and oil production sales tied to commodity prices, supplemented by midstream transportation and processing fees from industrial customers, and royalty-interest pass-throughs. Pricing is negotiated on a B2B basis and is not publicly disclosed. The company sells to industrial natural gas end users, leases acreage from landowners, and distributes proceeds to royalty holders, with growth and capital allocation driven by its PE sponsor.
Greylock Energy firmographics
Firmographics- Name
- Greylock Energy
- Legal name
- Greylock Energy LLC
- Website
- https://greylockenergy.com
- Company type
- Private
- Founded year
- 2017
- Operating status
- Operating
- Headcount range
- 51–100 employees
- Short description
- Greylock Energy is a privately held, ArcLight Capital Partners-backed oil and gas exploration, production, and midstream company operating approximately 4,800 wells and 2,350 miles of pipeline across Appalachia and the Rockies, serving industrial gas end users, landowners, and royalty holders.
- Ownership category
- akta.pro rank
Greylock Energy industry classification
Industry- Product category
- Oil and Gas Exploration & Production
- NAICS
- Pipeline Transportation of Natural Gas (48621)
- SIC
- Crude Petroleum & Natural Gas (1311)
- akta.pro primary industry
- Midstream Commercial Services (Capacity Marketing, Balancing & Scheduling) (EUAAACAL)
Keywords
Where Greylock Energy is headquartered
LocationHeadquarters
- HQ city
- Charleston
- HQ country
- United States
- HQ region
- North America
Offices5 records
Markets served
Greylock Energy business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Operations, Personnel, Infrastructure, Supply Chain, Technology or R&D
Revenue model
- Natural gas and oil production sales: Greylock Energy generates primary revenue through the sale of natural gas produced from their approximately 4,800 wells across Appalachia and the Rockies. Revenue fluctuates based on production volumes and commodity prices.
- Midstream pipeline services: The company builds and operates pipeline systems for oil and gas producers and provides customized design-build projects for downstream natural gas users. Revenue is generated through transportation and processing fees for delivering natural gas to industrial end users.
- Land leasing and mineral rights: Greylock acquires leasing agreements with landowners and mineral rights holders. While this is a cost center rather than direct revenue, it enables their production revenue stream through access to hydrocarbon reserves.
- Royalty interest trust operations: Greylock operates natural gas properties for ECA Marcellus Trust I, which holds royalty interests in Marcellus Shale properties. Greylock receives proceeds from natural gas sales that flow through to trust unitholders.
Go-to-market motion1 record
Distribution channels1 record
Marketing channels4 records
Greylock Energy product offering
Product offeringCore offering
Greylock Energy is an oil and natural gas exploration, production, and midstream company. It operates approximately 4,800 conventional and unconventional wells across Appalachia and the Rockies, supported by roughly 2,350 miles of pipeline, and delivers customized turnkey midstream and transportation solutions to industrial natural gas consumers. The company also leases mineral rights from landowners and manages royalty/owner relations for trust unitholders.
Product overview
Greylock Energy is an oil and natural gas exploration, production, and midstream company offering integrated energy services. The company operates a portfolio of three core product lines: Natural Gas Exploration & Production (handling drilling, completions, and well management across 4,800 wells), Midstream Services (encompassing pipeline systems, design-build projects, and transportation solutions), and Land Leasing Services (for property owners and mineral rights holders). Supporting these core operations are Owner Relations and Royalty & Working Interest Management services, which handle landowner communications, royalty payments, and documentation. The company is backed by ArcLight Capital Partners and is headquartered in Charleston, West Virginia with operations throughout Appalachia and the Rockies.
Differentiator
Problem solved
Functional benefit
Products and services
- Natural Gas Exploration & Production Oil and natural gas exploration and production operations, including drilling, completions, and well management across Appalachia and the Rockies, operating approximately 4,800 conventional and unconventional wells for industrial and energy consumers.
- Midstream Services
Quantifiable outcome
- Reduced approximately 2,000 tons of methane emissions annually through 2023 emissions-reduction initiative
Companies that use Greylock Energy
Customer profileNamed customers1 record
Segments3 records
Ideal customer profiles3 records
Greylock Energy technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature3 records
Greylock Energy partnerships and signals
Strategic signalScale indicators5 records
Recent moves7 records
Expansion highlights6 records
Greylock Energy competitors and assessment
Company assessmentDirect peers
- Range Resources: Independent natural gas and NGL producer focused on the Marcellus Shale in Appalachia, with significant acreage in southwest Pennsylvania. Directly comparable to Greylock on basin focus and gas-weighted production mix.
- Antero Resources: Pure-play Appalachia natural gas and NGL producer with an affiliated midstream business (Antero Midstream). Directly comparable to Greylock on basin focus, integrated midstream, and E&P business model.
- Expand Energy: Formed via the merger of Southwestern Energy and Chesapeake Energy, Expand Energy is one of the largest U.S. natural gas producers with significant Marcellus, Haynesville, and Utica exposure. Closely comparable to Greylock's shale-focused gas E&P model at greater scale.
- Coterra Energy: Diversified independent E&P with significant Marcellus Shale natural gas operations in Pennsylvania, plus Permian and Anadarko production. Comparable to Greylock on Appalachia upstream with broader geographic diversification.
- Antero Midstream: Midstream MLP gathering and processing business serving Antero Resources' Appalachian production. Directly comparable to Greylock's owned-and-operated ~2,350-mile pipeline and midstream service offering.
- SM Energy: U.S. independent E&P with active operations in the Uinta Basin in Utah — directly overlapping with Greylock's Western U.S. footprint established through the 2022 acquisition. Comparable on basin exposure and shale development approach.
- Comstock Resources: Pure-play Haynesville Shale natural gas producer in Louisiana and East Texas. Comparable to Greylock on focused, gas-weighted shale E&P model and downstream pipeline takeaway strategy.
- EQT Corporation: Largest natural gas producer in Appalachia with fully integrated upstream and midstream operations, including gathering and transmission pipelines. Closely comparable to Greylock's vertically integrated model in the same core basin.
- CNX Resources: Appalachia-focused independent natural gas producer with operations in the Marcellus and Utica shales, primarily in Pennsylvania and West Virginia — overlapping directly with Greylock's core operating geography.
Others
- ArcLight Capital Partners: Private equity sponsor of Greylock Energy and a leading energy infrastructure investor. Included as ecosystem reference rather than direct peer — the relationship shapes Greylock's capital access, M&A capacity, and exit dynamics.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks6 records
Key highlights7 records
Customer concentration
Greylock Energy social profiles
Digital presenceGreylock Energy financial estimates
Financial estimateRevenue estimate
Valuation estimate
Greylock Energy leadership team
Management profileNumber of profiles
Profiles9 records
Greylock Energy funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Greylock Energy M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Greylock Energy
What does Greylock Energy do?
Greylock Energy is an oil and natural gas exploration, production, and midstream company. It operates approximately 4,800 conventional and unconventional wells across Appalachia and the Rockies, supported by roughly 2,350 miles of pipeline, and delivers customized turnkey midstream and transportation solutions to industrial natural gas consumers. The company also leases mineral rights from landowners and manages royalty/owner relations for trust unitholders.
Is Greylock Energy a public or private company?
Greylock Energy is a private company. It is classified as private equity controlled and is currently operating.
When was Greylock Energy founded?
Greylock Energy was founded in 2017. It employs 51 to 100 people.
Where is Greylock Energy based?
Greylock Energy is headquartered in Charleston, United States, in the North America region.
How does Greylock Energy make money?
Four revenue lines are on record. Natural gas and oil production sales are the primary driver. The others are midstream pipeline services, land leasing and mineral rights and royalty interest trust operations.
Who are Greylock Energy's main competitors?
Direct peers on record are Range Resources, Antero Resources, Expand Energy, Coterra Energy, Antero Midstream, SM Energy, Comstock Resources, EQT Corporation and CNX Resources. ArcLight Capital Partners is listed as an others.
Does Greylock Energy have an API?
No public API is recorded for Greylock Energy.
What industry is Greylock Energy in?
Greylock Energy's product category is Oil and Gas Exploration & Production. Its primary akta.pro industry code is EUAAACAL, Midstream Commercial Services (Capacity Marketing, Balancing & Scheduling). Its NAICS code is 48621 and its SIC code is 1311.