Telex
Telex LLC is a technician-owned engineering and field-testing firm providing substation, protection, and commissioning services to investor-owned utilities, electric cooperatives, nuclear operators, and data center developers across the United States.
- Company typePrivate
- Founded2014
- HeadquartersFayetteville, United States
- Headcount51–100
- GTM typeB2B
- OfferingServices
What Telex does
Telex LLC is a privately held, technician-owned engineering and field-testing services firm founded in 2014 by Joshua Miller and headquartered in the United States. The company delivers six core service disciplines — Engineering Services (power system studies, protection and control engineering, SCADA integration, NERC compliance), Field Services (commissioning, protective relay setting and testing, substation work), Utilities (low/medium/high voltage testing, maintenance and acceptance testing), Testing Services (apparatus, transformer, and functional commissioning), Nuclear Transmission Support (switchyard protection, testing, and commissioning to nuclear-industry standards), and Data Center Construction (substation, switchgear, and high-voltage infrastructure for data center energization). Its field crews are trained across electromechanical and modern microprocessor relays from SEL, GE, ABB, and Westinghouse, and the company operates a U.S. Department of Labor-registered apprenticeship program for relay technicians.
The company serves three primary verticals: investor-owned and municipal utilities and electric cooperatives requiring power system studies, protection engineering, and commissioning; nuclear generating stations requiring NRC-traceable switchyard documentation and outage discipline; and data center developers requiring substation and high-voltage infrastructure on compressed energization timelines. Named customers include AEP, Entergy, Evergy, FirstEnergy, ONCOR, Pacificorp, OGE, SRP, Liberty, Hoosier, Knobelsdorff, SEL, and BBC.
Telex generates revenue through project-based professional services engagements, with pricing quoted per engagement based on scope, complexity, and duration and billing typically structured against multi-year contracts. The go-to-market motion is enterprise field sales: direct engagement with utility procurement officers, plant managers, and data center developers, supplemented by a content/thought-leadership blog and industry reputation. The company operates nationwide across union and non-union jurisdictions, with no disclosed headcount, no external institutional investors, no parent company, and a back-to-back Inc. 5000 recognition (No. 171 in 2024, No. 243 in 2025) as the most prominent third-party validation of its growth.
Telex firmographics
Firmographics- Name
- Telex
- Legal name
- Telex LLC
- Website
- https://telexllc.com
- Company type
- Private
- Founded year
- 2014
- Operating status
- Operating
- Headcount range
- 51–100 employees
- Short description
- Telex LLC is a technician-owned engineering and field-testing firm providing substation, protection, and commissioning services to investor-owned utilities, electric cooperatives, nuclear operators, and data center developers across the United States.
- Ownership category
- akta.pro rank
Telex industry classification
Industry- Product category
- Electrical Substation Engineering & Field Testing Services
- NAICS
- Testing Laboratories and Services (541380), Electric Power Generation, Transmission and Distribution (2211), Instrument Manufacturing for Measuring and Testing Electricity and Electrical Signals (334515)
- SIC
- Services-Testing Laboratories (8734), Instruments For Meas & Testing Of Electricity & Elec Signals (3825)
- akta.pro primary industry
- Commissioning, testing & energization services (HVT, relay testing, SAT) (EUADAKAE)
- akta.pro secondary industries
- Testing, Commissioning & Energization Services (HV) (EUAEABAI), Transmission Protection, Relaying, WAMS/PMU & Synchrophasors (EUADAAAK), Telecom, SCADA & OPGW/Fiber Integration for T&D Projects (EUAEABAG), SCADA & Telemetry Software (Control Center) (EUADAEAD)
Keywords
Where Telex is headquartered
LocationHeadquarters
- HQ city
- Fayetteville
- HQ country
- United States
- HQ region
- North America
Markets served
Telex business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Operations, Technology or R&D, Marketing or Sales
Revenue model
- Engineering and Field Services: Telex generates revenue through professional services engagements including power system studies, protection engineering, relay testing, substation commissioning, and specialized nuclear and data center infrastructure services. Projects are typically contracted on a per-engagement basis with pricing based on scope, complexity, and duration. The company serves utilities, cooperatives, and industrial clients through direct project-based contracts.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Other | Multi-year contract | Project-based professional services |
Go-to-market motion1 record
Distribution channels2 records
Marketing channels4 records
Telex product offering
Product offeringCore offering
Telex LLC provides technician-owned engineering and field-testing services for utilities, substations, and high-voltage infrastructure across the United States. The company delivers electric power system studies, protection and control engineering, SCADA integration, multi-brand relay testing, transformer and apparatus testing, substation commissioning, and specialized nuclear switchyard and data center power infrastructure services.
Product overview
Telex LLC is a nationwide technician-owned engineering and field-testing company providing six core service disciplines: Engineering Services (power system studies, protection engineering, SCADA integration, NERC compliance), Field Services (relay testing, substation commissioning, generation controls), Utilities (low/medium/high voltage testing and protection design), Testing Services (apparatus, transformer, and functional commissioning), Nuclear Transmission Support (switchyard and relay work for nuclear stations), and Data Center Construction (substation and high-voltage infrastructure for data centers). The company operates across Utility, Data Center, and Nuclear sectors, serving investor-owned utilities, municipal utilities, electric cooperatives, and nuclear operators throughout the United States.
Differentiator
Problem solved
Functional benefit
Products and services
- Engineering Services Electric power system studies, protection and control engineering, SCADA integration, NERC compliance, disturbance analysis, and protective relay settings for utilities and industrial clients.
- Field Services On-site commissioning, protective relay testing, panel replacement, RTU replacement, and maintenance of protection and control systems across substations and generation sites.
- Utilities Low, medium, and high voltage testing, relay settings, protection design, and maintenance and acceptance testing services for investor-owned, municipal, and cooperative utilities.
- Testing Services Apparatus, transformer, and functional commissioning testing using industry-standard methods including Megger, Ductor, Hi-Potential, turns ratio, oil testing, and SFRA across all major relay brands (SEL, GE, ABB, Westinghouse).
- Nuclear Transmission Support Switchyard protection, relay testing, calibration, commissioning, and outage support for nuclear generating stations with rigorous documentation and NRC compliance traceability.
- Data Center Construction Substation engineering, switchgear commissioning, medium and high voltage testing, and utility interconnect support to energize new data center facilities on schedule.
Quantifiable outcome
- Inc. 5000 Back-to-Back Honoree (2024 No. 171, 2025 No. 243)
Companies that use Telex
Customer profileNamed customers13 records
Segments3 records
Ideal customer profiles3 records
Telex technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature8 records
Telex partnerships and signals
Strategic signalScale indicators4 records
Recent moves6 records
Expansion highlights8 records
Telex competitors and assessment
Company assessmentBroad incumbents
- Quanta Services: Largest pure-play utility infrastructure services firm in North America, providing T&D, substation, and communications construction. Competes with Telex on substation and high-voltage infrastructure scopes, particularly for data center and utility clients.
- MYR Group: Specialty electrical construction firm serving T&D, commercial, and industrial markets. Competes with Telex on substation construction and high-voltage electrical work for utilities and data centers.
- Burns & McDonnell: Major employee-owned engineering, architecture, and construction firm with a deep utility T&D practice. Competes with Telex on transmission substation engineering, protection design, and commissioning.
- TRC Companies: Engineering, consulting, and construction management firm with strength in power delivery, substation, and grid modernization. Overlaps with Telex on protection engineering, NERC compliance, and utility field services.
- Skansa USA: Major construction and development firm with a strong utility and data center substation practice. Competes with Telex on data center power infrastructure and substation commissioning scopes.
- M.C. Dean: Large electrical and electronic systems integrator serving utility, data center, federal, and large commercial markets. A more diversified incumbent that competes with Telex on data center substation and mission-critical electrical scope.
Others
- Schweitzer Engineering Laboratories (SEL): Manufacturer of protection relays, automation, and communications equipment for the electric power industry. Listed as a Telex customer (relay testing services) and serves as a primary equipment ecosystem partner across Telex's protection work.
- ABB Electrification: Global electrification and automation OEM with a major relay and substation automation portfolio. Not a direct services competitor, but a deeply intertwined ecosystem participant whose relays Telex tests and commissions in the field.
Direct peers
- RESA Power: Provider of electrical testing, commissioned services, and life-extension solutions for power distribution and substation assets. Directly comparable in transformer testing, relay testing, and NETA-style acceptance testing.
- Power Grid Engineering: Specialty engineering and field-testing firm focused on power system protection, SCADA, and substation services for utilities. Directly comparable to Telex; VP of Business Development David Thompson previously worked at Power Grid Engineering.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat4 records
Key risks6 records
Key highlights7 records
Customer concentration
Telex social profiles
Digital presenceTelex financial estimates
Financial estimateRevenue estimate
Valuation estimate
Telex leadership team
Management profileNumber of profiles
Profiles4 records
Telex funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Telex 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 Telex
What does Telex do?
Telex LLC provides technician-owned engineering and field-testing services for utilities, substations, and high-voltage infrastructure across the United States. The company delivers electric power system studies, protection and control engineering, SCADA integration, multi-brand relay testing, transformer and apparatus testing, substation commissioning, and specialized nuclear switchyard and data center power infrastructure services.
Is Telex a public or private company?
Telex is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was Telex founded?
Telex was founded in 2014. It employs 51 to 100 people.
Where is Telex based?
Telex is headquartered in Fayetteville, United States, in the North America region.
How does Telex make money?
One revenue line is on record: engineering and Field Services.
Who are Telex's main competitors?
Broad incumbents on record are Quanta Services, MYR Group, Burns & McDonnell, TRC Companies, Skansa USA and M.C. Dean. Others are Schweitzer Engineering Laboratories (SEL) and ABB Electrification. Direct peers are RESA Power and Power Grid Engineering.
Does Telex have an API?
No public API is recorded for Telex.
What industry is Telex in?
Telex's product category is Electrical Substation Engineering & Field Testing Services. Its primary akta.pro industry code is EUADAKAE, Commissioning, testing & energization services (HVT, relay testing, SAT), with a secondary code of EUAEABAI, Testing, Commissioning & Energization Services (HV). Its NAICS code is 541380 and its SIC code is 8734.