What Bells Power Group does

Bells Power Group is a UK-based specialist manufacturer and integrator of standby, backup, and prime power generation systems, founded in 1898 and headquartered in Belvedere near London. The company designs, supplies, installs, and maintains diesel generator sets ranging from 6.8 kVA to 2,500 kVA, complemented by an in-house control panel workshop producing bespoke fuel panels, PLC panels, generator control panels, and fan panels, as well as prefabricated generator enclosures manufactured to BS and EN Standards. Its technology portfolio also extends to UPS systems, hydrogen-ready microgrid applications, monitoring services (Bells MES), and digital infrastructure offerings (Bells Digital), positioning it across hardware, controls, and recurring service layers.

The company serves enterprise customers in commercial real estate, data centers, residential developments, and critical infrastructure, with named reference projects including The Shard, 22 Bishopsgate, and 20 Gresham Street in London and the Gratham Water Treatment Works. Its go-to-market is B2B enterprise field sales targeting major construction and infrastructure projects, supported by direct sales specialists, a corporate website with case studies, and a presence on LinkedIn, Instagram, and YouTube.

Bells Power Group generates revenue through hardware sales of generator sets and enclosures, professional services for turnkey installation and project management, and recurring maintenance contracts including planned preventative maintenance, 24/7 emergency call-outs, and load bank testing. Pricing is quote-based and not publicly disclosed. In January 2026, the company was acquired by M.C. Dean, a U.S.-based $3 billion engineering firm specializing in cyber-physical infrastructure, with Bells Power continuing to operate under its existing leadership while gaining access to global delivery capabilities for AI infrastructure and next-generation technology customers.

Name

Bells Power Group

Legal name

Bells Power Group

Website

https://bellspowergroup.co.uk

Company type

Private

Founded year

1898

Operating status

Operating

Headcount range

51–100 employees

Short description

Bells Power Group is a UK-based specialist manufacturer and integrator of standby and backup power generation systems, including diesel generators, UPS, bespoke enclosures, control panels, and hydrogen-ready microgrid applications, serving enterprise customers in commercial real estate, data centers, and critical infrastructure since 1898.

Ownership category

akta.pro rank

Product category

Power Generation Equipment

NAICS

Turbine and Turbine Generator Set Units Manufacturing (333611), Engine, Turbine, and Power Transmission Equipment Manufacturing (3336)

SIC

Motors & Generators (3621), Switchgear & Switchboard Apparatus (3613)

akta.pro primary industry

Backup Power & Critical Power Systems (Generators/UPS) (IMAIABAJ)

akta.pro secondary industries

Backup & Resilience Power Systems (Standby Generators, Critical Facilities) (EUACALAG), Generator Installation & Transfer Switches (Standby/Portable Interlock) (HSAOADAF), Industrial Power & Energy Equipment Rental/Leasing (Generators, Light Towers, Compressors) (TLABAFAG)

Keywords

• Power generation systems
• Diesel generator sets
• Backup power solutions
• Generator maintenance services
• Control panel manufacturing

Headquarters

HQ city

Belvedere

HQ country

United Kingdom

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Power Generation Equipment Sales: Sale of diesel generator sets ranging from 6.8 kVA to 2500 kVA, including standalone units and complete turnkey solutions.
2. Installation Services: Specialist installation services for generator sets, including turnkey project management and mechanical/electrical installation from concept through completion.
3. Servicing and Maintenance: Planned preventative maintenance contracts, 24/7 emergency call-outs, load bank testing, oil and fluid sampling, and remedial works for all makes and sizes of generator sets, UPS, and peripheral systems.
4. Generator Sales and Installation: Supply and installation contracts for utility providers, private homeowners, commercial properties, and government buildings, including automatic change-over panels and fuel storage tanks.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels5 records

Core offering

Bells Power Group manufactures and supplies diesel generator sets ranging from 6.8 kVA to 2500 kVA, UPS systems, and bespoke control panels through its in-house workshop. The company provides turnkey project management, mechanical and electrical installation, planned preventative maintenance, load bank testing, and emergency generator hire for commercial real estate, data centers, residential developments, and infrastructure projects. Operations are based at Belvedere, UK, with services spanning the UK, Europe, and the Middle East.

Product overview

Bells Power Group is a UK-based specialist in integrated power solutions founded in 1898, offering a comprehensive portfolio of power generation products and services. The core offering consists of Bells Power Solutions (turnkey project management and installation), Bells Power Services (maintenance and generator sales), and Bells Power Control Systems (bespoke panel design and manufacturing). These are complemented by dedicated product lines of diesel generators ranging from 6.8 kVA to 2500 kVA, sound-attenuated and bespoke enclosures, load bank testing, UPS systems, emergency hire solutions, and product training services. The company operates from Belvedere, UK, and serves commercial real estate, data centers, residential developments, and infrastructure projects including iconic buildings such as The Shard and 22 Bishopsgate in London.

Differentiator

Problem solved

Functional benefit

Products and services

• Bells Power Solutions Complete turnkey project management, mechanical, electrical and installation services from initial concept design through to completion for power generation systems, delivered to commercial real estate, data center, and infrastructure customers.
• Bells Power Services Comprehensive maintenance, remedial works, and planned preventative maintenance for all makes and sizes of generator sets, UPS systems, and peripheral power infrastructure, provided to commercial and industrial customers across the UK.
• Bells MES Monitoring and management services for power generation equipment, enabling remote visibility into generator performance and condition for enterprise customers.
• Bells Power Control Systems Bespoke control panel design, build, and testing services including fuel panels, PLC panels, generator control panels, and fan panels, manufactured in-house at the company's workshop near London for power generation systems.
• Bells Digital Digital solutions and scanning services for power infrastructure, supporting design, surveying, and asset documentation for power generation projects.
• Diesel Generator Sets (6.8 kVA to 2500 kVA) Comprehensive range of diesel generator sets from 6.8 kVA to 2500 kVA in open and enclosed options, suitable for rural areas, telecoms sites, utility sites, private housing, small businesses, farm complexes, industry, retail, finance, healthcare, commercial buildings, and data centers.
• Generator Enclosures Sound-attenuated generator enclosures from FG Wilson designed for weather resistance and sound attenuation, available in CALHD, CAL, and CAE variants covering 24-938 kVA generator sizes.
• Bespoke Turnkey Generator System Enclosures Fully integrated prefabricated generator enclosures in horizontal and vertical configurations, custom-designed and manufactured in the UK according to BS and EN Standards for specific client site requirements.
• Planned Preventative Maintenance (PPM) Customised preventative maintenance contracts covering PPM services, specialist generator controls servicing, 24/7 emergency call-outs, oil and fluid sampling, and remedial works for all makes and sizes of generator sets.
• Load Bank Testing Load bank testing services from 80 kVA to over 1000 kVA available 24/7 to optimise generator efficiency and identify performance issues before they cause failures.
• Generator Sales and Installation Contracts Supply and installation of generator systems with automatic change-over panels (63-400A) and fuel storage tanks (1000-10000 litres) for utility providers, private homeowners, commercial properties, and government buildings.
• Uninterruptible Power Supply (UPS) Systems Uninterruptible Power Supply systems and specialist services to safeguard equipment and ensure seamless power continuity for commercial and industrial customers.
• Emergency and Long-Term Hire Solutions Emergency and long-term hire generator sets for planned and reactive power needs, including load banks and peripherals for testing, available nationwide across the UK.
• Product Training Full product training for generator set operators and key personnel delivered at customer premises or onsite, plus technical support to resolve site issues for enterprise customers.

Named customers3 records

Segments4 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Scale indicators4 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Aggreko: Global specialist in temporary and modular power solutions, including diesel generators and microgrid-style offerings. Directly comparable to Bells Power on generator deployment, rental, and turnkey power projects for commercial, data center, and industrial customers.
• Power Electrics: UK-based specialist in generator sales, hire, and maintenance for commercial and industrial customers. Direct peer in the UK standby/backup power market with overlapping product lines and service offerings.
• Kohler Power Systems: Manufacturer of industrial and commercial generator sets, transfer switches, and paralleling switchgear. Comparable to Bells Power across generator manufacturing, switchgear/controls, and integrated standby power solutions.

Broad incumbents

• Cummins: Global manufacturer of diesel and alternative-fuel generator sets up to multi-megawatt capacity. A major incumbent in standby and prime power, overlapping Bells Power's generator product lines but at vastly greater scale and geographic reach.
• Caterpillar (FG Wilson): Global power systems OEM including the FG Wilson generator brand referenced in Bells Power's enclosures line. Comparable on industrial-scale diesel generator manufacturing and global service network for standby/backup power.
• Schneider Electric: Global incumbent in power management, UPS systems, and data center infrastructure. Overlaps Bells Power's UPS, switchgear, and critical power offerings, particularly in the data center customer segment.
• Eaton: Global power management company offering UPS, switchgear, and backup power solutions. Comparable to Bells Power on the UPS and critical power side, particularly for commercial real estate and data center customers.
• ABB: Global engineering firm in electrification, automation, and microgrids. Comparable to Bells Power on electrical infrastructure, microgrid technology, and large-scale power system integration.

Emerging players

• Critical Power Supplies: UK-focused specialist in UPS systems and critical power solutions for commercial and data center customers. Comparable niche peer with overlapping UPS and backup power offerings in the UK market.

Regional players

• Centrica Business Solutions: UK-based provider of distributed energy, on-site power, and energy management solutions. Adjacent peer addressing similar commercial/industrial customers with on-site generation, CHP, and resilience-focused power offerings.

Market position

Strengths5 records

Weaknesses4 records

Competitive moat5 records

Key risks5 records

Key highlights6 records

Customer concentration

• YouTubeyoutube.com/@BellsPowerGroup
• LinkedInlinkedin.com/company/bells-power-ltd
• Instagraminstagram.com/bellspowergroup

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

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 Bells Power Group