What Fundamentals does

Fundamentals Ltd is a UK specialist in intelligent grid voltage control, headquartered in Swindon, Wiltshire, with a secondary operational site in Oldham and a registered office in Chester. Founded circa 1993, the company has built more than 30 years of domain expertise around solving voltage control problems across primary substations and low voltage feeders, with particular depth in legacy on-load tapchanger platforms (Ferranti, AEI, English Electric). Its core technology is the Total Voltage Control ecosystem, an integrated portfolio comprising the SuperTAPP SG automatic voltage control relay, the Tapchanger Control Unit (TCU), the pole-mounted EcoVAR™ LV control device, and AVC/AVR scheme design, settings, installation, and commissioning services, plus legacy tapchanger spares, refurbishment, and OEM-grade support.

The company's customer base is concentrated among UK Distribution Network Operators (DNOs) and utilities managing transmission and distribution infrastructure under Ofgem's ED3 Smart Networks regime, with UK Power Networks explicitly cited as a customer. End applications include voltage compliance for low-carbon grids, accommodation of EVs, solar PV, and heat pumps on ageing infrastructure, reduction of network reinforcement costs, and management of bidirectional power flows. Distribution combines direct enterprise sales into UK DNOs with international reach via a network of Value Added Resellers for overseas markets.

Revenue is generated through a mix of hardware sales (relays, control units, LV devices), professional services (scheme design, settings design, installation, testing, commissioning, specialist consultancy), and managed services for voltage compliance and legacy tapchanger support. Pricing is quote-based and not publicly disclosed. The firm is ISO 9001 certified and operates as a private limited company under English and Welsh jurisdiction. In January 2026, Fundamentals was acquired by EA Technology, a Chester-based grid-edge technology consolidator, in the first transaction of an M&A programme backed by private equity firm Summa Equity AB; Fundamentals continues to operate as a business unit from Swindon and Oldham, retaining its brand identity through post-acquisition commitments including the BEAMA 2050 Connected Climate Commitment in March 2026.

Name

Fundamentals

Legal name

Fundamentals Ltd

Website

https://fundamentalsltd.co.uk

Company type

Private

Founded year

1993

Operating status

Acquired

Headcount range

101–250 employees

Short description

Fundamentals Ltd is a UK specialist in intelligent grid voltage control, providing the Total Voltage Control ecosystem of AVC/AVR relays, tapchanger services, and LV network control hardware and engineering services to distribution network operators and utilities managing voltage compliance for low-carbon grids. Since January 2026 it has operated as a subsidiary of EA Technology.

Ownership category

akta.pro rank

Product category

Grid Voltage Control Equipment and Engineering Services

NAICS

Switchgear and Switchboard Apparatus Manufacturing (335313), Relay and Industrial Control Manufacturing (335314), Electrical Equipment Manufacturing (33531)

SIC

Switchgear & Switchboard Apparatus (3613), Instruments For Meas & Testing Of Electricity & Elec Signals (3825)

akta.pro primary industry

Grid-Scale Power Conversion & Interconnection (PCS, Grid-Tie Inverters, Converter Stations) (IMAGAAAI)

akta.pro secondary industries

Low-Voltage Switchboards & Panelboards (LV distribution panels, MCCs, switchboards) (IMAGAEAA), Medium/Low-Voltage Power Distribution (MCCs, Panels, UPS, Grounding) (EUAEAFAB), High-Voltage Electrical Systems (Switchgear, Transformers, Protection & Control) (EUAEAFAA)

Keywords

• Voltage control solutions
• Automatic voltage control
• Tapchanger services
• Grid voltage management
• Low voltage network control

Headquarters

HQ city

Swindon

HQ country

United Kingdom

HQ region

Europe

Offices3 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Hardware Products: Sale of voltage control hardware including SuperTAPP SG automatic voltage control relays, tapchanger control units, and LV network control devices.
2. Engineering Services: AVC/AVR scheme design and integration, settings design, installation, testing and commissioning services for tapchanger control schemes.
3. Tapchanger Support and Spares: Expertise and support for legacy transformer on-load tapchangers including OEM spares, kits, repairs, troubleshooting and refurbishment services. Covers Ferranti, Associated Electrical Industries (AEI), The English Electric Company, and other legacy tapchanger brands.
4. Specialist Consultancy: Technical consultancy services for voltage compliance and grid optimization.
5. Voltage Compliance Service: Service offering to ensure voltage compliance for network operators.

Go-to-market motion2 records

Distribution channels2 records

Marketing channels8 records

Core offering

Fundamentals designs, manufactures and supports grid voltage control hardware (notably the SuperTAPP SG automatic voltage control relay, Tapchanger Control Unit and EcoVAR™ pole-mounted LV control) and delivers the engineering services that integrate them, including AVC/AVR scheme design, settings design, install-test-commission, specialist consultancy and voltage compliance services. The portfolio also covers legacy tapchanger support, spares and refurbishment for major UK-installed brands (Ferranti, AEI, English Electric). Together these offerings form the company's "Total Voltage Control" ecosystem, sold primarily to UK Distribution Network Operators and utilities.

Product overview

Fundamentals is a specialist in intelligent grid voltage control with over 30 years of experience, offering the 'Total Voltage Control' ecosystem — a unified portfolio of hardware products (SuperTAPP SG, Tapchanger Control Unit, EcoVAR™), engineering services (AVC/AVR scheme design, settings design, installation, commissioning, specialist consultancy), and legacy tapchanger support (Ferranti, AEI, English Electric, and other legacy systems). The company provides end-to-end voltage compliance solutions for electrical grids transitioning to accommodate low-carbon technologies, addressing challenges from increasing electric vehicle connections, solar PV integration, and network reinforcement costs. In January 2026, Fundamentals was acquired by EA Technology as part of Summa Equity's grid-edge technology consolidation strategy.

Differentiator

Problem solved

Functional benefit

Products and services

• SuperTAPP SG Automatic Voltage Control (AVC/AVR) relay for control and monitoring of on-load tapchangers, sold to electrical network operators and utilities.
• Tapchanger Control Unit (TCU) Control unit for tapchanger operations integrated with the automatic voltage control ecosystem, intended for UK distribution network operators and utilities.
• EcoVAR™ Pole-mounted low voltage control solution for managing voltage on low voltage networks; in trial with UKPN. Intended for LV network operators and utilities.
• Total Voltage Control Ecosystem Unified portfolio combining SuperTAPP SG, AVC/AVR schemes, LV Network Control and Tapchanger Services into end-to-end voltage compliance for low carbon grids. Sold to DNOs and utilities.
• AVC/AVR Scheme Design & Integration Engineering service designing and integrating automatic voltage control schemes to guarantee operational integrity of tapchanger control, for utilities and DNOs.
• AVC/AVR Settings Design Configuration design services for AVC/AVR settings to optimize voltage control performance, for utility and DNO clients.
• Install, Test & Commission Installation, testing and commissioning services for tapchanger motor-drive mechanisms and control systems, delivered on customer sites for utilities and DNOs.
• Specialist Consultancy Expert consultancy on voltage control and grid optimization, for network planners and asset managers at utilities and DNOs.
• Voltage Compliance Service Managed service ensuring statutory voltage compliance on electrical networks for low carbon grid requirements, offered to DNOs and utilities.
• Ferranti Tapchangers Support Support, spares, repairs, troubleshooting and refurbishment services for Ferranti on-load tapchangers, for operators with legacy Ferranti transformer fleets.
• Associated Electrical Industries (AEI) Tapchangers Support Support, spares, repairs, troubleshooting and refurbishment services for AEI on-load tapchangers, for operators with legacy AEI transformer fleets.
• The English Electric Company (EE) Tapchangers Support Support, spares, repairs, troubleshooting and refurbishment services for English Electric on-load tapchangers, for operators with legacy English Electric transformer fleets.
• Other Legacy Tapchanger Support Support, spares and refurbishment for legacy on-load tapchanger brands beyond Ferranti, AEI and English Electric.
• Tapchanger Spares Service Spares supply service maintaining operational availability of tapchanger equipment for utility and DNO customers.
• Low Voltage Regulation Voltage regulation services for LV networks addressing constraints of modern dynamic networks with rising LCT connections, for LV network operators and DNOs.
• Energy Storage Energy storage solutions integrated with LV network control to help manage grid constraints and voltage fluctuations, for LV network operators and DNOs.

Quantifiable outcome

• UK voltage control market projected to double to £65 million by 2030
• +1 more outcomes

Named customers1 record

Segments4 records

Ideal customer profiles2 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Eight partnerships are on record, tiered flagship, core and minor.

• Schneider ElectricflagshipStrategic or Co-development Partner · 24 March 2026Key signatory of the BEAMA 2050 Connected Climate Commitment, a cross-sector initiative bringing together nearly 30 UK organizations to accelerate coordinated supply chain decarbonisation. Signatories commit to reducing Scope 1, 2, and 3 emissions with science-based targets aligned to 1.5°C.
• Wilson TransformersflagshipStrategic or Co-development Partner · 24 March 2026Key signatory of the BEAMA 2050 Connected Climate Commitment, collaborating with Fundamentals on cross-sector decarbonisation initiatives.
• LegrandflagshipStrategic or Co-development Partner · 24 March 2026Key signatory of the BEAMA 2050 Connected Climate Commitment, working with Fundamentals and other organisations on supply chain decarbonisation.
• SSEN (Scottish and Southern Electricity Networks)coreGTM or Marketing Partner · 24 March 2026Supporting the BEAMA 2050 Connected Climate Commitment initiative alongside Fundamentals and other energy sector partners.
• CEF (Contractor Engineering Forum)coreGTM or Marketing Partner · 24 March 2026Supporting the BEAMA 2050 Connected Climate Commitment, a cross-sector initiative for coordinated supply chain decarbonisation.
• EA TechnologycoreStrategic or Co-development Partner · 14 January 2026EA Technology, a Chester-based voltage control technology provider, acquired Fundamentals as its first step in a broader programme of M&A activity to consolidate grid-edge technologies globally. The acquisition strengthens Fundamentals' capabilities and positions the combined entity to capture growth in the UK voltage control market projected to double to £65 million by 2030.
• BEAMAcoreStrategic or Co-development PartnerFundamentals is a member of BEAMA, a trade association for the electromechanical industry. The company logo appears on the BEAMA section of the website indicating active membership.
• IET (The Institution of Engineering and Technology)minorStrategic or Co-development PartnerAffiliation with IET, the professional engineering institution. Company logo displayed indicating partnership or membership.

Scale indicators6 records

Recent moves6 records

Expansion highlights6 records

Broad incumbents

• ABB: Global leader in electrification and grid automation with voltage regulation, protection relays, and substation control offerings. Competes broadly in the grid equipment market that Fundamentals serves, with much larger scale and bundled solutions.
• Siemens Energy: Major grid technology provider offering voltage control, transformer tapchanger integration, and substation automation as part of its broader transmission portfolio. Direct overlap with Fundamentals' market at the substation level.
• Schneider Electric: Global energy management and automation company with EcoStruxure grid solutions including voltage management. Co-signatory with Fundamentals on the BEAMA 2050 commitment and a broad incumbent in the same customer set.
• GE Vernova: GE's grid solutions business offering power conversion, transformers, and grid automation including voltage control. Competes with Fundamentals in the broader grid equipment category with significantly greater scale.
• Hitachi Energy: Provider of transformers with integrated tapchangers, grid automation, and power quality solutions. Competes with Fundamentals in the substation and voltage control equipment market, including through partnerships with MR Reinhausen.

Direct peers

• Maschinenfabrik Reinhausen (MR): Global market leader in on-load tapchangers and voltage regulation products. Directly comparable as the dominant supplier of the transformer tapchangers that Fundamentals' SuperTAPP SG and TCU products control and monitor.
• EA Technology: UK-based specialist in grid-edge technologies including partial discharge monitoring, asset management, and voltage services. Acquired Fundamentals in January 2026; operates overlapping voltage control capabilities and shares the same UK DNO customer base.
• ZIV (ABB): Specialist in protection, control, and automation for electrical substations, now part of ABB. Comparable as a provider of digital substation control and protection relays serving similar utility customers.
• Selta (Schneider Electric): Italian specialist in voltage regulation equipment for distribution networks, now part of Schneider Electric. Direct peer in the niche of voltage regulators and power quality systems for utility customers.
• Wilson Transformers: Australian manufacturer of distribution and power transformers with voltage regulation and on-load tapchanger capabilities. Co-signatory with Fundamentals on the BEAMA 2050 commitment and a peer in transformer-based voltage control.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/FundamentalsLtd
• Facebookfacebook.com/Fundamentalsltd
• LinkedInlinkedin.com/company/fundamentalsltd

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

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 Fundamentals