What Riley Power Group does

Riley Power Group (RPG) is a privately held, full-service maintenance and capital construction firm headquartered in Rock Hill, South Carolina (founded 2013), with a second office in Pinehurst, NC operating the union arm under the RPG Specialty Services banner. The company self-performs mechanical, electrical, civil, and specialty services — including welding and machining, instrumentation and controls, valve and actuator servicing, MMC (maintenance, modification and construction), nuclear background investigations, and a renewables line covering wind and solar — for enterprise and government clients in power generation (fossil, nuclear, oil and gas), US defense and naval shipbuilding, and industrial/petrochemical markets.

RPG holds National Board and ASME Code Stamps (R, S, NB), INPO membership, and NEI 03-01 compliant Background Investigation credentials, qualifying it for nuclear and naval nuclear work. It invests in proprietary training infrastructure (an EPRI-based valve training program, a Human Performance safety program, and a Test Loop under construction at the Rock Hill Training Center with side-by-side analog and digital I&C equipment), and operates a separate staffing/augmentation arm that placed 1,600 individuals in 2024 and 2,300 in 2025.

RPG generates revenue through T&M, Target Price, and Fixed-Price contracts and willingness to put fees at risk against performance criteria, distributed via direct enterprise sales and government/IDIQ contracting — with named enterprise customers including AEP West Fleet, General Dynamics Electric Boat, multiple nuclear fleets (recurring refuel outage valve/I&C work across 20 units), a Southwest nuclear generating station, a southern utility (Missile Shield Walls), and US Navy shipbuilders. Headcount is in the 251-500 range for core staff, with significant additional workforce via the staffing arm.

Name

Riley Power Group

Legal name

Riley Power Group

Website

https://rileypowergroup.com

Company type

Private

Founded year

2013

Operating status

Operating

Headcount range

251–500 employees

Short description

Riley Power Group is a private, full-service maintenance and capital construction firm serving power generation (nuclear, fossil, oil and gas), US defense and naval shipbuilding, and industrial clients with mechanical, electrical, welding, machining, valve, I&C, and MMC services nationwide.

Ownership category

akta.pro rank

Product category

Industrial Maintenance & Construction Services

NAICS

Electric Power Generation (22111), Nuclear Electric Power Generation (221113), Power Boiler and Heat Exchanger Manufacturing (33241), Turbine and Turbine Generator Set Units Manufacturing (333611)

SIC

Electric Services (4911), Engines & Turbines (3510), Oil & Gas Field Services, Nec (1389)

akta.pro primary industry

Thermal Power Plant EPC (Gas/Coal/Oil) (EUAEAAAA)

akta.pro secondary industries

Gas-Fired Power Plant O&M and Life-Extension/Repowering Services (EUACABAJ), Steam Turbines & Turbogenerators (IMAHAFAB), Power Transformers, Reactors & Auxiliary Power Systems (EUADACAJ)

Keywords

• Industrial maintenance services
• Mechanical construction services
• Nuclear welding services
• Power plant maintenance
• Defense shipbuilding services

Headquarters

HQ city

Pinehurst

HQ country

United States

HQ region

North America

Offices2 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Maintenance Services: Time and Materials (T&M), Target Price, and Fixed-Price maintenance services for power generation, defense, and industrial facilities including mechanical, electrical, civil, and support maintenance.
2. Capital Construction: Turn-key modification projects and new construction services for power plants, oil and gas facilities, and defense sectors with various pricing structures including T&M, Target Price, and Fixed-Price options.
3. Staffing Services: Seconded staffing and staff augmentation for craft workers, technicians, and professional positions including project managers, supervisors, planners, and schedulers.
4. Nuclear Background Investigations: NEI 03-01 compliant background investigation services for nuclear industry clients including self-screening and third-party investigation options.

Go-to-market motion1 record

Distribution channels2 records

Marketing channels2 records

Core offering

Riley Power Group is a full-service maintenance and capital construction company specializing in mechanical and electrical solutions for power generation (fossil, nuclear, oil and gas), defense, and industrial sectors. The company delivers welding and machining, I&C and electrical, valve services, comprehensive MMC (maintenance, modification, and construction) execution, nuclear background investigations, staffing augmentation, and renewables (wind and solar) services nationwide through direct enterprise contracts.

Product overview

Riley Power Group (RPG) is a full-service maintenance and capital construction company offering mechanical and electrical solutions nationwide. The company operates through multiple service lines including Welding and Machining Services, I&C and Electrical Services, Valve Services, MMC (Maintenance, Modification and Construction), Nuclear Background Investigations, Staffing Services, and Renewables (Wind and Solar). RPG's sister company, RPG Specialty Services, serves as the union arm of the organization. The company serves power generation (fossil, nuclear, oil and gas), defense, and industrial sectors.

Differentiator

Problem solved

Functional benefit

Products and services

• Welding and Machining Services Comprehensive welding and machining services including pipe, tube, and structural welding (FCAW, GMAW, SMAW, GTAW, RMD/STT), boiler repairs, field machining, and pipefitting for power generation, industrial, and process facilities. Delivered under T&M, Target Price, and Fixed-Price structures.
• I&C and Electrical Services Instrument and Controls (I&C) and electrical services including full turnkey installation, maintenance, calibration, troubleshooting, testing, PLC, DCS, and medium voltage switchgear work for enterprise clients in power, defense, and industrial sectors.
• Valve Services On-site valve and actuator services including repair, modification, replacement, refurbishment, in-line machining, diagnostic services for MOV, AOV, and check valves, and OEM reverse engineering, backed by an EPRI-based valve training program.
• MMC (Maintenance, Modification and Construction) Services Comprehensive maintenance, modification, and construction services integrating mechanical, electrical, civil, painting, rigging, insulation, and scaffolding services for nuclear, power, and industrial clients, delivered as turn-key projects or T&M engagements.
• Nuclear Background Investigations (BI) NEI 03-01 compliant background investigation services for nuclear industry clients, including Self Screening and third-party investigation options, delivered by a professional team of subject matter experts and approved C/V on the NEI Audit Schedule.
• Staffing Services Recruiting and staffing services for seconded and staff augmentation roles, providing craft workers, technicians, and professionals including project managers, supervisors, planners, and schedulers across union and open shop environments.
• Renewables (Wind and Solar) Services Renewable energy division services including wind turbine internal blade inspections, root gauge measurements, annual maintenance, generator repair, repower services, and solar field construction and maintenance for utility-scale renewables operators.
• RPG Specialty Services Union arm of Riley Power Group, providing specialty services and staffing with established union relationships for maintenance, modification, and construction projects in power generation, defense, and industrial sectors.

Quantifiable outcome

• Zero safety incident workplace with excellent safety performance and one of the best safety records in the industry
• +3 more outcomes

Named customers8 records

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

One partnership is on record.

• IHI CorporationcoreStrategic or Co-development PartnerRiley Power has signed a collaboration agreement with IHI Corporation for ammonia fuel conversion technology. This partnership supports future energy transition initiatives, with Riley Power providing expertise in power generation maintenance and construction services to support ammonia fuel conversion projects.

Scale indicators9 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Day & Zimmermann: Day & Zimmermann's D&Z Nuclear and industrial services divisions provide maintenance, modification, and construction for nuclear power plants and industrial facilities — directly comparable to RPG's core MMC offering to nuclear and defense clients.
• Holtec International: Holtec supplies nuclear fuel, equipment, and a broad suite of plant services including maintenance, modification, and decommissioning support, overlapping with RPG's nuclear maintenance, I&C, and outage work.
• EnergySolutions: EnergySolutions provides nuclear decommissioning, operations, maintenance, and modification services to commercial and government nuclear clients, with comparable outage and specialty welding exposure to RPG.
• Brand Industrial Services (BrandSafway): BrandSafway provides industrial maintenance, scaffolding, insulation, and specialty services to power, petrochemical, and industrial clients — overlapping RPG's MMC, civil, and industrial construction service lines.
• Matrix Service Company: Matrix Service delivers construction and maintenance services to the power, oil & gas, and industrial markets including specialty welding and tank/terminal work, with comparable customer verticals to RPG.
• Structural Group: Structural Group provides specialty contracting and maintenance services (strengthening, repair, and industrial services) to power, industrial, and infrastructure clients, with similar craft-labor-driven field services to RPG.

Broad incumbents

• BWX Technologies (BWXT): BWXT is a major nuclear components and services company serving the US Naval nuclear program and commercial nuclear operators; a much larger incumbent with overlapping nuclear and defense exposure to RPG's customer base.
• Framatome: Framatome is a global nuclear services OEM offering outage, modification, and field services to commercial nuclear fleets, directly competitive with RPG's nuclear MMC and valve/I&C work but at significantly larger scale.
• Curtiss-Wright Corporation: Curtiss-Wright's Defense and Nuclear segments supply specialty manufacturing and services for naval nuclear and power generation, with overlapping I&C, valve, and qualified-welding capabilities to RPG's defense and power work.

Emerging players

• ENGlobal Corporation: ENGlobal provides engineering, procurement, construction management, and specialty services to the energy sector including nuclear and pipeline clients, with a smaller scale and narrower service mix than RPG but similar end markets.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/rileypowergroup

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Subsidiaries2 records

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 Riley Power Group