ERSO Energy Solutions

What ERSO Energy Solutions does

ERSO Energy Solutions is a Russian private holding company headquartered in Moscow with primary manufacturing operations at the Ufa Transformer Plant (UTZ) in Bashkortostan. The company designs, manufactures, and services power transformers and reactors across the full voltage class spectrum (0.5 kV to 1150 kV) with power ratings up to 630 MVA, including power transformers, network transformers with non-flammable dielectric, reactor equipment, electric furnace, traction, converter, mobile, and phase-shifting transformers, as well as high-voltage tank circuit breakers and mobile substations. ERSO holds the #1 position on the Russian transformer market by rated power of manufactured equipment and, in June 2026, secured a Rostekhnadzor license for manufacturing equipment for nuclear power stations. Its customers are predominantly Russian state-owned and state-adjacent enterprises, including PAO Rosseti, Russian Railways, and federal infrastructure projects such as Vostochny Cosmodrome.

The company was formed at the end of 2020 from assets of JSC Elektrozavod by decision of AFK Sistema, a diversified Russian investment conglomerate that remains the parent owner. ERSO operates an integrated business model covering an in-house design bureau, advanced laboratories, testing centers, service centers, and multiple production sites, supported by an internal training center. Revenue is generated through quote-based, custom-engineered B2B hardware sales (transformers, reactors, switchgear, mobile substations) and complementary add-on services including complex engineering and construction project delivery, power system equipment (switching gear, relay protection, intelligent metering, automation), and lifecycle service and maintenance for imported high-voltage equipment. Go-to-market is direct enterprise field sales through Moscow and Ufa offices, supplemented by participation in industry events such as Innoprom, and competitive tendering for state and private procurement contracts.

Name

ERSO Energy Solutions

Legal name

АО «ХОЛДИНГ ЭРСО»

Website

https://erso.group

Company type

Private

Founded year

2020

Operating status

Operating

Headcount range

1,001–5,000 employees

Short description

Russian private holding (AFK Sistema subsidiary) operating the #1 transformer and reactor manufacturer in Russia by rated power, producing equipment from 0.5 kV to 1150 kV up to 630 MVA for state-owned grid, railway, nuclear, industrial, and federal infrastructure customers.

Ownership category

akta.pro rank

Product category

Power Transformer and Reactor Manufacturing

NAICS

Power, Distribution, and Specialty Transformer Manufacturing (335311)

SIC

Power, Distribution & Specialty Transformers (3612), Switchgear & Switchboard Apparatus (3613)

akta.pro primary industry

Power Transformers, Reactors & Auxiliary Power Systems (EUADACAJ)

akta.pro secondary industries

Transformer & Reactor Refurbishment / Replacement Programs (EUAEALAE), Medium-Voltage Distribution Components (MV breakers, disconnects, reclosers, MV terminations & joints) (IMAGAEAL)

Keywords

• Power transformer manufacturing
• High-voltage electrical equipment
• Industrial transformer engineering
• Grid infrastructure equipment
• Reactor equipment production

Headquarters

HQ city

Moscow

HQ country

Russia

HQ region

Europe

Offices4 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Power Transformer Manufacturing and Sales: Design, manufacture, and sale of power transformers and reactors as core revenue stream. Equipment ranges from low-voltage to extra-high voltage (1150 kV), serving grid operators, industrial facilities, and infrastructure projects.

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels6 records

Core offering

ERSO designs, manufactures, and supplies power transformers and reactors for voltage classes from 0.5 kV to 1150 kV with power capacity up to 630 MVA. The company also delivers complex engineering and construction services for new energy facilities, reconstruction, and modernization projects, plus lifecycle service and maintenance for high-voltage equipment.

Product overview

ERSO Energy Solutions is a multidisciplinary integrated holding company focused on comprehensive equipment supply, implementation of new construction projects, reconstruction, and modernization of energy facilities. The company operates a design bureau, service and testing centers, advanced laboratories, and multiple production sites (including Ufa Transformer Plant), consolidated in late 2020 from Elektrozavod assets under AFK Sistema. The core product portfolio encompasses transformers and reactors across all voltage classes (0.5 kV–1150 kV) with power ratings up to 630 MVA, including: Power Transformers, Network Transformers with Non-Flammable Liquid Dielectric, Reactor Equipment, Electric Furnace Transformers, Traction Transformers for Railway Transport, Converter Transformers, Mobile Transformers, Phase-Shifting Transformers, High-Voltage Tank Circuit Breakers, and Mobile Substations. Complementing the equipment portfolio, ERSO offers Complex Engineering and Construction services for full project lifecycle management, Power System Equipment (switching gear, relay protection, intelligent metering, automation), and comprehensive Service and Maintenance for imported high-voltage equipment. The product range positions ERSO as a single-source provider covering design, manufacturing, integration, and lifecycle support for energy infrastructure.

Differentiator

Problem solved

Functional benefit

Products and services

• Power Transformers (Силовые трансформаторы) High-capacity power transformers for electricity transmission and distribution in grid applications, serving voltage classes from 0.5 kV to 1150 kV and power capacities up to 630 MVA. Designed for energy grid operators, industrial enterprises, and infrastructure projects.
• Network Transformers with Non-Flammable Liquid Dielectric (Сетевые трансформаторы с негорючим жидким диэлектриком) Network transformers using fire-safe liquid dielectric insulation for enhanced safety in populated areas and safety-critical applications, sold to grid operators and infrastructure customers.
• Reactor Equipment (Реакторное оборудование) Reactors for power grid compensation, filtering, and load management across all voltage classes, sold to grid operators for transmission infrastructure applications.
• Electric Furnace Transformers (Электропечные трансформаторы) Specialized transformers designed for electric arc furnaces and induction heating in metallurgical and industrial applications, sold to metallurgy and heavy industry customers.
• Traction Transformers for Railway Transport (Трансформаторы тяговые для железнодорожного транспорта) Traction transformers for powering electric locomotives and railway rolling stock, including the ODNTV-2400/25-U2 model for the Orlets freight locomotive, sold to railway operators and rolling stock manufacturers.
• Converter Transformers (Преобразовательные трансформаторы) Specialized transformers for power conversion applications, including HVDC and industrial converter systems, sold to grid operators and industrial power users.
• Mobile Transformers (Мобильные трансформаторы) Transportable transformer units for temporary power supply, emergency response, and mobile grid connections, sold to grid operators and infrastructure customers.
• Phase-Shifting Transformers (Фазоповоротные трансформаторы) Transformers for power flow control and load balancing in interconnected transmission networks, sold to grid operators for grid optimization.
• High-Voltage Tank Circuit Breakers (Высоковольтные баковые выключатели) High-voltage circuit breakers for protecting transmission and distribution equipment from overload and fault conditions, sold to grid operators and substations.
• Mobile Substations (Мобильные подстанции) Self-contained, transportable substations integrating transformers, switchgear, and control systems for rapid deployment, sold to grid operators and infrastructure customers.
• Complex Engineering and Construction (Комплексный инжиниринг и строительство) Full project lifecycle service from engineering surveys and functional strategy development through equipment supply, design management, construction, and commissioning for energy infrastructure projects. Sold to grid operators, industrial enterprises, and government entities undertaking new construction, reconstruction, and modernization of energy facilities.
• Service and Maintenance for High-Voltage Equipment (Сервисное обслуживание и ремонт) High-quality and cost-effective maintenance and repair services for imported high-voltage equipment throughout its operational lifecycle, sold to grid operators and industrial customers.

Quantifiable outcome

• #1 position in Russian transformer market by rated power capacity
• +1 more outcomes

Named customers5 records

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature7 records

Partnerships

One partnership is on record.

• Government of Republic of BashkortostancoreStrategic or Co-development Partner · 8 July 2026Signed agreement of intent at Innoprom trade show for implementation of investment project to expand transformer equipment production capacity on territory of Republic of Bashkortostan. This partnership supports the company's strategic growth plans and modernization of Ufa production facilities.

Scale indicators4 records

Recent moves8 records

Expansion highlights1 record

Direct peers

• Hyundai Electric: Korean manufacturer of power transformers up to 800 kV and related grid equipment. Direct competitor in transformer manufacturing with similar product breadth and engineering depth.
• Power Machines: Russia-based manufacturer of power transformers, generators, and other heavy electrical equipment. Closest domestic competitor to ERSO in the Russian transformer market with overlapping voltage class coverage.
• TBEA: Chinese manufacturer of power transformers up to 1,000 kV and related grid infrastructure. Direct competitor in heavy transformer manufacturing with growing presence in CIS and emerging markets.
• Toshiba Energy Systems & Solutions: Manufactures large power transformers and reactors for utility and industrial applications globally. Direct competitor in EHV power transformers and grid modernization projects.
• Hitachi Energy: Global leader in power transformers, reactors, and grid integration solutions with EHV capability up to 1,200 kV. Direct competitor in the same product category as ERSO; previously ABB's Power Grids division.
• CG Power and Industrial Solutions: Indian manufacturer of power and distribution transformers, including EHV units. Similar product positioning across voltage classes and large transformer manufacturing capabilities.
• SVEL Group: Russian manufacturer of power and distribution transformers. Domestic peer competing in similar voltage classes and customer segments within the Russian market.
• Siemens Energy: Major global manufacturer of power transformers and grid technology, including HVDC converter transformers. Direct competitor with similar voltage class range and substantial grid-project execution capability.
• Mitsubishi Electric: Manufactures large power transformers and transmission equipment for global utility markets. Direct competitor in EHV power transformers with comparable product engineering specifications.

Broad incumbents

• General Electric (GE Vernova): Operates a large power transformer and grid solutions business as part of its broader energy portfolio. Overlapping capability in transformers and grid equipment, but operates as a much larger diversified vendor.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Subsidiaries5 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 ERSO Energy Solutions