What CORE Transformers does

CORE Transformers, LLC is a U.S.-based manufacturer and distributor of new and refurbished electrical transformers founded in 2021 and headquartered in Seneca, South Carolina. The company offers a full portfolio across dry-type transformers (up to 15 MVA and 35 kV, plus low-voltage up to 2,500 kVA), padmount transformers (up to 11 MVA and 45 kV), and substation transformers (up to 100 MVA and 230 kV), complemented by a ProCORE ready-to-ship sub-brand. Manufacturing, design, and testing follow ANSI/IEEE C57.12, NEMA, DOE 2016, UL, cUL, and FM Approved standards. An exclusive partnership with Eaglerise extends manufacturing access to over 5.5 million square feet of production space across Texas, Mexico, Thailand, and China, supporting a claimed capacity of more than 13,000 transformers per month.

CORE monetizes primarily through direct sale of new and refurbished transformers, supplemented by transformer repairs, short- and long-term rentals (30 kVA to 20 MVA), and customization services such as padmount-to-substation conversions and oil type changes. Pricing is entirely quote-based, with 2-5 year warranty options, free shipping in the contiguous 48 U.S. states, and a 24/7/365 sales operation. The go-to-market is exclusively direct: enterprise and mid-market buyers engage via the website, phone, and dedicated sales team, while a self-serve e-commerce storefront handles low-voltage dry-type purchases. Customer segments span data centers and mission-critical facilities (primary), renewables (solar, wind, BESS), commercial real estate, and industrial end markets, with named enterprise customers including AT&T, Tesla, Duke Energy, ExxonMobil, Nucor, Toyota, Walmart, Lockheed Martin, and Chevron.

The company was founded by industry veterans Randall Maddox (40+ years), Heath Blundell (28+ years), and Mitch Garland (25+ years) and is led by CEO Winston Krauss. In September 2025, Emerald Lake Capital Management made an equity investment to fund talent, technology, inventory, and acquisitions. In March 2026, CORE announced its exclusive global manufacturing partnership with Eaglerise, and in July 2026, CORE entered into a merger agreement with Mission Critical Group (MCG) to combine its engineered-to-order transformer capacity with MCG's broader critical power platform, while continuing to operate under its own brand. Reported differentiators include 12-16 week expedited lead times versus an industry average of 35+ weeks, 1,000+ unit in-stock inventory with same-day shipping, 99.9% on-time delivery, and 1-6 week repair turnaround against an industry standard of 8-12 weeks.

Name

CORE Transformers

Legal name

CORE Transformers, LLC

Website

https://coretransformers.com

Company type

Private

Founded year

2021

Operating status

Operating

Headcount range

11–50 employees

Short description

CORE Transformers, founded in 2021 and headquartered in Seneca, South Carolina, supplies new and refurbished transformers for data centers, renewable energy, commercial, and industrial customers across the United States, emphasizing rapid lead times and large in-stock inventory.

Ownership category

akta.pro rank

Product category

Power Transformers / Electrical Equipment Manufacturing

NAICS

Power, Distribution, and Specialty Transformer Manufacturing (335311)

SIC

Power, Distribution & Specialty Transformers (3612)

akta.pro primary industry

Transformers (Power, Distribution, Instrument, Specialty) (IMAGAAAA)

Keywords

• Dry-type transformers
• Padmount transformers
• Substation transformers
• Transformer manufacturing
• Power distribution equipment

Headquarters

HQ city

Seneca

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Operations, Personnel, Technology or R&D, Infrastructure

Revenue model

1. New Transformer Sales: Sale of new, in-stock and made-to-order (MTO) transformers across dry-type, padmount, and substation categories. Revenue recognized upon shipment, with payment due prior to shipment for finished goods.
2. Transformer Repairs: Inspection, testing, repair, and rewinding services for existing transformers. Includes detailed evaluation, oil analysis, full report, and 1-year parts and labor warranty. Turnaround ranges from days to 6 weeks.
3. Transformer Rentals: Short- and long-term rental of transformers ranging from 30 kVA to 20 MVA. Rental units can be customized to fit specific project requirements. Supports emergency outages and temporary power solutions.
4. Transformer Customizations: Custom modification of transformers including oil type changes (mineral, FR3, silicone), loop/radial feed configuration changes, bushing additions/relocations, and accessory installations (IR viewing windows, fans, external drains). Revenue included in the sale or rental of equipment.
5. Surplus/Used Transformer Purchasing: CORE purchases surplus, used, or unwanted transformers from customers, refurbishes them, and resells or rents them. Contact via [email protected] or 844-220-5760.

Pricing tiers

Go-to-market motion2 records

Distribution channels2 records

Marketing channels3 records

Core offering

CORE Transformers manufactures and distributes new and refurbished dry-type, padmount, and substation transformers (rated up to 100 MVA and 230 kV) for data center, renewable energy, commercial, and industrial customers. The company also offers transformer repair, customization, and rental services and operates an inventory-heavy ready-to-ship "ProCORE" product line that delivers units in 12–16 weeks versus an industry average of 35+ weeks.

Product overview

CORE Transformers operates as a transformer manufacturing and distribution company offering a portfolio of products across three core transformer types (Dry-Type, Padmount, and Substation), complemented by the ProCORE ready-to-ship sub-brand. The company provides a full-service lifecycle including new sales, rentals, repairs, and customizations. Products serve multiple verticals including data centers, renewables, commercial, and industrial markets. Manufacturing capacity reaches 13,000+ transformers per month across 7 facilities totaling 5.5 million ft². Made-to-order lead times range from 10 weeks (low-voltage dry-types) to 40 weeks (substation) with standard delivery, or 16 weeks expedited. The company merged with Mission Critical Group in 2026 to expand its critical power platform.

Differentiator

Problem solved

Functional benefit

Products and services

• Dry-Type Transformers Air-cooled dry-type transformers for commercial and indoor industrial applications, manufactured to ANSI/IEEE, NEMA, and DOE 2016 standards with UL/cUL/FM approvals; sold to commercial, industrial, and data center customers.
• Padmount Transformers Ground-mounted, tamper-resistant distribution transformers used in commercial, industrial, and utility distribution applications; manufactured for outdoor pad-mount installations.
• Substation Transformers

Quantifiable outcome

• 99.9% On-Time Delivery rate delivering 3GW+ of transformers over 8 months to data center customers
• +4 more outcomes

Named customers9 records

Segments4 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

Two partnerships are on record, tiered core.

• Mission Critical Group (MCG)coreStrategic or Co-development Partner · 24 July 2026Mission Critical Group merged with CORE Transformers to expand its medium-voltage transformer manufacturing capabilities for data centers, utilities, and AI infrastructure. CORE's engineered-to-order transformers are added to MCG's critical power platform, enabling faster speed-to-power delivery for customers. Following closing, CORE continues to operate under its own brand with its existing leadership team while becoming part of MCG.
• EaglerisecoreOEM/ Whitelabel/ Licensing Partner · 20 March 2026CORE Transformers entered into an exclusive partnership with Eaglerise, a world-renowned transformer manufacturer with over 5.5 million sq ft of state-of-the-art facilities across Texas, Mexico, Thailand, and China. This partnership expands CORE's manufacturing capacity and global footprint.

Scale indicators10 records

Recent moves7 records

Expansion highlights7 records

Direct peers

• Maddox Industrial Transformers: Founded in 2015 by CORE co-founder Randall Maddox, Maddox Industrial Transformers is a direct competitor offering new, refurbished, and rental transformers with a similar end-to-end service model and customer base.
• Sunbelt Transformers: Earlier transformer business co-founded by Randall Maddox in 1981. Operates in the same new/refurbished transformer market with overlapping product types and customers.
• Virginia Transformer Corp: US-based power and distribution transformer manufacturer serving utilities, data centers, and industrial customers with similar product breadth (substation, padmount, dry-type) and Made-in-America positioning.
• ERMCO (Electric Research and Manufacturing Cooperative): US manufacturer of distribution transformers and components, competing directly with CORE in padmount and substation categories for utility and commercial buyers.
• Mission Critical Group (MCG): Provider of end-to-end electrical infrastructure for mission critical facilities. CORE is merging into MCG; their existing critical power platform overlaps directly with CORE's data center focus.

Broad incumbents

• Siemens Energy: Global incumbent with large transformer manufacturing footprint and broad grid/utility/data center presence. Directly overlaps CORE's product categories but operates at much larger scale across multiple energy segments.
• Hitachi Energy: World-leading transformer manufacturer and grid equipment supplier. Competes in substation and power transformer categories with deep utility relationships globally.
• Eaton: Diversified power management major with significant transformer and switchgear offerings, competing with CORE in commercial, industrial, and data center segments as part of a much broader electrical portfolio.
• Schneider Electric: Global energy management and automation company with transformer product lines serving data centers, utilities, and industrial customers as part of a comprehensive electrical infrastructure portfolio.

Emerging players

• Eaglerise Electric: Global transformer manufacturer with 5.5M+ ft² of facilities. Holds an exclusive manufacturing partnership with CORE, positioning it as both a capacity partner and a potential competitor in certain segments.

Market position

Strengths5 records

Weaknesses4 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/core-transformers

Compliance7 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles7 records

Funding overview

Funding rounds1 record

Investors1 record

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 CORE Transformers