What Geothermal Resource Group does

Geothermal Resource Group, Inc. (GRG) is a privately held professional services firm specializing in geothermal exploration, drilling management, and wellfield development. Founded around 1994 and operated for over three decades prior to its acquisition by RESPEC Company, LLC effective August 31, 2024, GRG delivered end-to-end geothermal project services spanning conceptual modeling and exploration targeting, well drilling and testing, reservoir modeling and engineering, power plant startup, and ongoing wellfield management. The firm served a global client base of geothermal developers, utility companies, and governmental agencies, with documented project engagement across 18 countries and 87 geothermal fields.

GRG's principal technical differentiation was its pioneering application of polycrystalline diamond compact (PDC) bits to hard rock geothermal drilling, a technique that increases penetration rates and reportedly reduces drilling costs by approximately 30% and power plant costs by around 15%. The firm operated on a project-based, quote-driven professional services model, with revenue generated through consulting and engineering service contracts rather than product sales. Post-acquisition, GRG's subsurface expertise has been integrated into RESPEC's broader engineering, geomechanics, and project management infrastructure, operating within an ESOP-owned parent organization and positioning the combined platform to deliver full-service geothermal energy solutions worldwide.

The company's commercial structure was anchored by long-tenured technical leadership, notably Principal Engineer Bill Rickard, whose specialized subsurface knowledge and PDC bit innovation represented core proprietary capabilities. Distribution relied on direct enterprise and government contracting, supported by RESPEC's corporate channels including LinkedIn, Facebook, newsletters, and a corporate website newsroom following the acquisition.

Name

Geothermal Resource Group

Legal name

Geothermal Resource Group, Inc.

Website

https://geothermalresourcegroup.com

Company type

Private

Founded year

1994

Operating status

Acquired

Headcount range

1–10 employees

Short description

Geothermal Resource Group is a professional services firm delivering end-to-end geothermal exploration, drilling management, reservoir modeling, and wellfield services to developers, utilities, and government agencies across 18 countries and 87 geothermal fields.

Ownership category

akta.pro rank

Product category

Geothermal Energy Services

NAICS

Geophysical Surveying and Mapping Services (541360), Support Activities for Mining (2131), Drilling Oil and Gas Wells (213111)

SIC

Oil & Gas Field Exploration Services (1382), Drilling Oil & Gas Wells (1381)

akta.pro primary industry

Geothermal Resource Exploration & Assessment (Geology, Geophysics, Geochemistry) (EUAMAEAA)

akta.pro secondary industries

Geothermal Drilling & Well Construction (Production/Injection, Directional, Well Services) (EUAMAEAB), Geothermal Wellfield & Steamfield Operations for Power (EUACAHAI)

Keywords

• Geothermal exploration services
• Drilling management services
• Wellfield development
• Reservoir modeling engineering
• Geothermal energy consulting

Headquarters

HQ city

Palm Desert

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Technology or R&D, Marketing or Sales

Revenue model

1. Geothermal Professional Services: Project-based professional services for geothermal development including exploration, drilling management, reservoir modeling, and wellfield management. Revenue is generated through consulting and engineering service contracts with developers, utility companies, and government agencies.

Go-to-market motion1 record

Distribution channels2 records

Marketing channels4 records

Core offering

Geothermal Resource Group provides end-to-end professional services for geothermal energy development, spanning conceptual modeling and exploration targeting, well drilling and testing, reservoir modeling and engineering, power plant startup, and ongoing wellfield management. The firm leverages more than 30 years of specialized expertise and pioneering polycrystalline diamond compact (PDC) bit technology for hard rock geothermal drilling to deliver cost-effective, high-performance solutions for developers, utility companies, and governmental agencies worldwide.

Product overview

Geothermal Resource Group (GRG) offers a comprehensive suite of geothermal development services as a single integrated portfolio. The core offerings include geothermal exploration and drilling management, wellfield development, and reservoir modeling and engineering. These services are delivered across the entire project lifecycle—from conceptual modeling and exploration targeting through well drilling, testing, reservoir engineering, power plant startup, and ongoing wellfield management. A key technological differentiator is GRG's pioneering PDC (polycrystalline diamond compact) bit technology for hard rock geothermal drilling, which significantly reduces costs and improves performance. GRG's approach emphasizes creating cost-effective, high-performance solutions that address clients' long-term goals by capturing a comprehensive picture of resource capability, drilling requirements, and operational well life.

Differentiator

Problem solved

Functional benefit

Products and services

• Geothermal Exploration and Drilling Management
• Geothermal Wellfield Development
• PDC (Polycrystalline Diamond Compact) Bits for Geothermal Drilling
• Reservoir Modeling and Engineering
• Power Plant Startup Services

Quantifiable outcome

• 30% reduction in drilling costs through PDC bit technology
• +2 more outcomes

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature1 record

Partnerships

One partnership is on record.

• RESPEC Company, LLCflagshipStrategic or Co-development Partner · 31 August 2024RESPEC acquired Geothermal Resource Group, Inc. effective August 31, 2024. This acquisition combines GRG's subsurface expertise with RESPEC's engineering, geomechanics, and project management capabilities, creating a full-service geothermal energy solutions provider. The alignment enables delivery of end-to-end geothermal projects from conceptual modeling through wellfield management. GRG's team joined RESPEC as part of an ESOP company culture focused on knowledge transfer and legacy-building in geothermal engineering.

Scale indicators5 records

Recent moves4 records

Expansion highlights4 records

Direct peers

• AltaRock Energy: AltaRock is an enhanced geothermal systems (EGS) developer providing exploration, drilling, and reservoir stimulation services. It is comparable to GRG in its subsurface technical services focus and geothermal project development capabilities.
• Iceland Drilling Company: Iceland Drilling is a specialized geothermal and water well drilling contractor with deep expertise in high-temperature geothermal well construction. It is a direct peer to GRG's drilling management services in the geothermal project services market.
• Reykjavik Geothermal: Reykjavik Geothermal is a geothermal project developer and consulting firm with international operations across multiple continents. It is comparable to GRG in its end-to-end geothermal development services and global project portfolio.
• Thermochem (a brand of ITHACA Energy Solutions): Thermochem provides reservoir engineering, geochemistry, and fluid management services for geothermal and oil & gas projects. It is highly comparable to GRG's reservoir modeling and engineering offering and targets the same developer and utility client base.
• GeothermEx (Chevron technical services subsidiary): GeothermEx was a leading independent geothermal consulting firm offering exploration, resource assessment, and reservoir engineering services before being absorbed into Chevron. It is a direct peer to GRG's resource exploration and reservoir engineering services.

Broad incumbents

• Ormat Technologies: Ormat is the largest independent geothermal power generator globally and develops, owns, and operates its own projects. It is a broad incumbent that occasionally procures third-party drilling and reservoir services comparable to GRG's offering.
• Cyrq Energy (formerly Raser Technologies / Cyrq-PCI): Cyrq Energy is a geothermal power developer and operator with utility-scale projects in the western United States. It is a broad incumbent and potential customer for the type of drilling management and reservoir engineering services GRG provides.

Emerging players

• Zanskar Geothermal & Minerals: Zanskar is an emerging geothermal developer focused on exploration and development of new geothermal fields in the western United States. It is comparable to GRG as a target client and adjacent services competitor in geothermal exploration.
• Fervo Energy: Fervo Energy is an enhanced geothermal systems developer that combines drilling and reservoir engineering in-house. It represents an emerging vertically-integrated competitor that could reduce reliance on independent services providers like GRG.
• Eavor Technologies: Eavor is a closed-loop geothermal technology developer pursuing a proprietary well architecture. It is an emerging player whose vertical integration of drilling and reservoir work is structurally adjacent to GRG's services portfolio.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat4 records

Key risks5 records

Key highlights5 records

Customer concentration

• Facebookfacebook.com/RESPEC-417563058629055
• LinkedInlinkedin.com/company/geothermal-resource-group

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Geothermal Resource Group