G&J Technical Services

What G&J Technical Services does

G&J Technical Services Limited is a wholly Ghanaian-owned private company incorporated in March 1994 that manufactures, supplies, installs, and maintains diesel-driven generating sets for the standby and mains power markets. Its product range covers 20KVA to 4000KVA+ across four series (3, 5, 7, and 9 Series) in open, canopied, and containerized configurations, built around engines from Perkins, Scania, Mitsubishi, and Lister Petter coupled with Mecc Alte or Leroy Somer alternators, complemented by Automatic Transfer Switch (ATS) units of various sizes.

The business operates a unified product-and-service model. Hardware revenue comes from the sale of generating sets and ATS units into B2B enterprise customers, with quote-based pricing determined by capacity, configuration, and site-specific requirements; services revenue comes from on-site generator sizing surveys, termination/testing/commissioning, routine maintenance, repairs, alternator services (rotor/stator, AVR), load bank testing, and 24/7 after-sales emergency support using genuine OEM parts. Distribution is direct via an enterprise field-sales team that conducts on-site sizing and load analysis for customers across all sectors of the Ghanaian economy, with light cross-border activity into other African countries.

The company is anchored by two Ghanaian facilities — a headquarters plus workshop on Korle Bu Road in Greater Accra and a regional office ("The Generator House") in Kumasi serving northern zones — and is led by a founder family with second-generation and recently added professional finance leadership. Founded with GBP 20,000 in seed capital from Ian Dale of Dale Power Systems (UK), it has grown without subsequent external funding to a 51-100 employee operation.

Name

G&J Technical Services

Legal name

G&J Technical Services Limited

Website

https://gjtechghana.com

Company type

Private

Founded year

1994

Operating status

Operating

Headcount range

51–100 employees

Short description

G&J Technical Services is a Ghanaian-owned industrial equipment company, founded 1994, that sells, installs, and maintains diesel generating sets (20KVA to 4000KVA+) and related power equipment for enterprise customers across all sectors of the Ghanaian economy and other African countries.

Ownership category

akta.pro rank

Product category

Diesel Generator Manufacturing and Power Generation Equipment

NAICS

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

SIC

Motors & Generators (3621), Engines & Turbines (3510), Misc Industrial & Commercial Machinery & Equipment (3590)

akta.pro primary industry

Reciprocating Engine Generator Sets (Diesel/Gas/HFO) (IMAHAFAC)

akta.pro secondary industries

Emergency & Standby Diesel Generator Power (Critical Facilities) (EUACACAH), Engine Generator & Microgrid Power Plant EPC (Diesel/Gas Recip) (EUAEAAAJ), Fuel Systems Service (Diesel/Gas/CNG/LNG, Injectors, Tanks) (TLAKABAH), Emergency Generator & Transfer Switch Troubleshooting (HSAOAEAI)

Keywords

• Diesel generators
• Power generation equipment
• Generator installation services
• Generator maintenance services
• Automatic transfer switches

Headquarters

HQ city

Accra

HQ country

Ghana

HQ region

Africa

Offices3 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Diesel Generator Sales: Sale of diesel generating sets ranging from 20KVA to 4000KVA+ in open, canopied, and containerized configurations. Products sourced from world-class manufacturers with Perkins, Scania, Mitsubishi, Lister Petter engines and Mecc Alte/Leroy Somer alternators. Also includes Automatic Transfer Switch (ATS) sales.
2. Maintenance and Servicing: Routine maintenance services including regular inspections, fluid checks, load testing, filter replacement, battery inspection, cooling system maintenance, and control panel checks. Professional servicing by skilled technicians using genuine parts.
3. Generator Repairs: Comprehensive repair services including diagnosis, electrical system repairs, mechanical component repairs, fuel system overhauls, exhaust system repairs, and generator main alternator repairs. Includes rotor/stator restoration, brush/commutator maintenance, and AVR replacement.
4. Installation and Commissioning: Termination, testing, and commissioning services including electrical termination, comprehensive load testing, voltage regulation, frequency stability testing, transient response assessments, performance validation, and system integration testing with existing electrical infrastructure.
5. Generator Sizing Survey: On-site generator sizing survey service including site assessment, load analysis, future-proof solutions, energy efficiency recommendations, compliance verification, and tailored recommendations with client consultation.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels6 records

Core offering

G&J Technical Services manufactures, supplies, and installs diesel engine generating sets ranging from 20 kVA to over 4,000 kVA for commercial and industrial customers in Ghana and other African markets. The company also delivers the full lifecycle of supporting services, including pre-installation sizing surveys, installation and commissioning, load bank testing, preventive and corrective maintenance, repairs, and 24/7 emergency support. Its offering is organized into four generator series (3, 5, 7, 9) plus automatic transfer switches, built around Perkins, Scania, Mitsubishi, and Lister Petter engines and Mecc Alte and Leroy Somer alternators.

Product overview

G&J Technical Services is a wholly Ghanaian-owned company established in March 1994, specializing in the sale, installation, and maintenance of diesel engine-driven generating sets. The company operates as a unified product-and-service business offering four generator product lines (3 SERIES, 5 SERIES, 7 SERIES, and 9 SERIES) ranging from 20KVA to 4000KVA+, available in open, canopied, and containerized configurations. These generators are powered by world-class diesel engines (Perkins, Scania, Mitsubishi, Lister Petter) coupled with Mecc Alte or Leroy Somer alternators. The product portfolio is complemented by Automatic Transfer Switches (ATS) of various sizes. The service arm includes comprehensive offerings: Routine Maintenance, Repairs, 24/7 After-Sales Support, Generator Sizing Survey, Termination/Testing/Commissioning, Load Bank Testing, and Generator Main Alternator Services. The company serves all sectors of the Ghanaian economy and some other African countries with a focus on maintenance excellence as a key differentiator.

Differentiator

Problem solved

Functional benefit

Products and services

• 3 Series Generator Set Entry-tier diesel engine generator set within G&J's four-series product family, intended for commercial and small industrial users requiring lower-capacity standby or prime power within the company's 20 kVA to 4,000+ kVA range.
• 5 Series Generator Set Mid-tier diesel engine generator set within G&J's product family, targeting commercial and industrial customers with mid-range standby or prime power requirements within the 20 kVA to 4,000+ kVA range.
• 7 Series Generator Set Upper-mid tier diesel engine generator set within G&J's product family, addressing higher-capacity commercial and industrial standby or prime power needs within the 20 kVA to 4,000+ kVA range.
• 9 Series Generator Set Top-tier diesel engine generator set within G&J's product family, designed for the highest-capacity standby and prime power applications up to and beyond 4,000 kVA, serving large industrial, infrastructure, and institutional customers.
• Automatic Transfer Switch (ATS) Automatic transfer switch panel that enables seamless switchover between mains power and the generator set during mains failure, sold as part of G&J's integrated standby power solution for commercial and industrial customers.
• Generator Sizing Survey Pre-installation engineering service that assesses a customer's site load profile to determine the correctly sized generating set from G&J's 20 kVA to 4,000+ kVA range.
• Generator Installation and Commissioning On-site installation and commissioning service for G&J-supplied diesel generator sets, performed by G&J's own technical teams to bring units into operational service at customer facilities.
• Load Bank Testing Performance verification service that applies artificial load to a generator set to validate its output and operational readiness, offered to commercial and industrial customers as part of G&J's lifecycle support.
• Generator Maintenance and Repair Preventive and corrective maintenance and repair service for diesel generating sets, provided by G&J to keep customer-owned equipment operational across its installed base.
• 24/7 Emergency Support Round-the-clock emergency response service supporting G&J customers with standby generator breakdowns and urgent service needs.

Segments2 records

Ideal customer profiles1 record

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

Six partnerships are on record, tiered core.

• PerkinscoreTechnology or IntegrationWorld-class diesel engine manufacturer whose engines are used in G&J generating sets. Perkins engines are among the robust world-class engines sourced for generators ranging from 20KVA to 4000KVA+.
• ScaniacoreTechnology or IntegrationPremium diesel engine manufacturer whose engines power G&J generating sets, providing robust performance for standby power applications.
• MitsubishicoreTechnology or IntegrationDiesel engine manufacturer for G&J generating sets, contributing to the company's range of robust world-class engine options.
• Lister PettercoreTechnology or IntegrationDiesel engine manufacturer whose engines are featured in G&J Technical Services' generating set products. The company logo appears on the Partners page indicating active supplier relationship.
• Mecc AltecoreTechnology or IntegrationAlternator manufacturer whose products are coupled with diesel engines in G&J generating sets, providing reliable electrical power generation.
• Leroy SomercoreTechnology or IntegrationAlternator manufacturer whose products are used in G&J generating sets, offering quality power generation components alongside world-class engines.

Scale indicators5 records

Recent moves10 records

Expansion highlights5 records

Broad incumbents

• Caterpillar (CAT): Caterpillar manufactures diesel and gas generator sets through its Electric Power division, covering standby and prime applications across industrial and commercial customers worldwide. Directly comparable to G&J's diesel genset range (20KVA to 4000KVA+), though Caterpillar operates at global scale as an OEM with a dealer/service network that competes with local integrators like G&J in Ghana.
• Wärtsilä: Wärtsilä is a global manufacturer of engine power plants and energy solutions for marine and utility applications, with operations across Africa. Comparable in standby and prime diesel power generation but operates at much larger scale (utility-scale power plants) than G&J's commercial/industrial focus.
• Atlas Copco Power & Flow: Atlas Copco offers portable and stationary diesel generators (QAS/QAC series) alongside compressors, serving industrial, construction, and mining customers globally including Africa. Comparable to G&J's product range but with broader industrial equipment portfolio and a stronger rental presence.
• Cummins Inc. Cummins is one of the world's largest independent diesel engine and generator manufacturers with a broad product range of diesel gensets used across standby and prime power applications globally. Comparable to G&J in offering diesel generator sets, although Cummins is a global OEM with proprietary engine technology whereas G&J is an integrator/distributor in West Africa.

Others

• Perkins Engines (parent of G&J's key supplier): Perkins is a leading diesel engine manufacturer whose engines G&J integrates into its generator sets. As the OEM supplier, Perkins competes indirectly via its own distribution network and partnerships; also relevant as a key enabler of G&J's product quality.

Direct peers

• Dale Power Solutions: Dale Power Solutions is a UK-based specialist in diesel generators and power solutions, founded by Ian Dale who provided seed capital to G&J in 1994. Highly comparable as a diesel genset integrator with installation and maintenance services; offers an 'incumbent' comparison point from a developed market.
• AKSA Power Generation: AKSA is a Turkish manufacturer of diesel generators and a major exporter to African and emerging markets, offering a product range similar to G&J's 20KVA-4000KVA+ spectrum. Competes directly with G&J in Ghanaian and West African tenders through price-competitive gensets.
• Himoinsa: Himoinsa designs and manufactures diesel, gas, and hybrid generator sets up to 3,000 kVA with significant export presence in Latin America, Africa, and Asia. Directly comparable to G&J's product offering and target market of commercial and industrial standby customers.
• Aggreko: Aggreko is a global provider of temporary and rental power generation, including diesel generators, with active operations in Africa serving mining, oil & gas, and industrial customers. Highly comparable to G&J in terms of power generation equipment and service intensity, though Aggreko operates primarily on a rental/temp power model rather than permanent installations.
• FG Wilson (Caterpillar): FG Wilson, now part of Caterpillar, is one of the leading global brands of diesel generator sets from ~6.8 kVA to 2,500+ kVA, with strong presence in Africa through dealer networks. Comparable to G&J as a diesel genset supplier with multi-brand configuration capability.

Market position

Strengths5 records

Weaknesses3 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

• YouTubeyoutube.com/@GJTechGhana
• Facebookfacebook.com/GJTECHGHANA
• LinkedInlinkedin.com/company/g-j-technical-services-limited
• Instagraminstagram.com/gjtechnicalserviceslimited?igsh=MXg3aTh2ZHZjazBkcQ%3D%3D&utm_source=qr
• Xx.com/gjtechghana

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 G&J Technical Services