Our Divisions

At Jumba Engineering Services Limited (JES Ltd.), growth and innovation have guided our evolution for over 40 years. What began in 1982 as a family-founded electrical contracting firm has expanded into a group of specialized divisions, each created to meet the dynamic needs of Kenya’s economy.

Our divisions operate with independence in expertise but unity in values — safety, quality, and integrity. Together, they ensure that JES Ltd. continues to deliver engineering solutions that are comprehensive, reliable, and future-ready.

1. Electrical Contracting Division

Electrical contracting is the backbone of Jumba Engineering., with a legacy spanning over four decades. This division designs, supplies, installs, and maintains electrical systems across commercial, industrial, residential, and institutional sectors.

Core Capabilities

  • High-voltage and low-voltage power distribution systems.
  • Transformer installation, relay testing, and protection coordination.
  • Earthing and lightning protection systems (IEC 60364 compliance).
  • ICT structured cabling and security systems.
  • Power quality analysis and remedial solutions.

Track Record
We have successfully delivered projects for Two Rivers Mall, Garden City Mall, KenGen, and numerous universities, ministries, and real estate developers. Our Electrical Division remains the largest and most experienced arm of Jumba Engineering.

2. Electrical Design & Consultation Division

Before a single trench is dug or cable is laid, the foundation of every successful project lies in precise design and expert consultation. This division ensures that clients benefit from Jumba Engineering’s decades of engineering expertise even before implementation begins.

Core Capabilities

  • Conceptual and detailed electrical design (IEC 60364, IEEE 1584, NFPA 70E compliant).
  • Load flow and fault level studies using advanced simulation software.
  • Protection coordination and arc flash studies.
  • Energy efficiency audits and optimization.
  • Tender documentation, BOQs, and project feasibility studies.

Track Record
We have guided major projects such as Kirinyaga University Amphitheatre electrical design, LV board distribution layouts for Kisumu Housing Units, and power factor correction studies for agro-industrial clients. By engaging our design team, clients avoid costly redesigns and ensure regulatory compliance from day one.

3. Construction Division

The Construction Division extends our expertise into civil, structural, and infrastructure works, complementing our electrical portfolio. With NCA4 registration, this division is capable of handling large-scale, complex projects with the same precision and safety standards that define Jumba Engineering.

Core Capabilities

  • Civil works for substations, control rooms, and industrial plants.
  • Building construction for residential, commercial, and institutional projects.
  • Integration of mechanical and electrical systems in new builds.
  • Quality assurance in line with the Kenya Building Code and NCA regulations.

Track Record
From housing estates in Syokimau to amphitheatres and institutional facilities in Vihiga, our Construction Division is building Kenya’s future with durability and design excellence.

4. Solar & Renewable Energy Division

The future of energy is renewable, and Jumba Engineering. is leading the charge. Our Solar Division specializes in the design, installation, and maintenance of grid-tied, off-grid, and hybrid renewable energy systems.

Core Capabilities

  • Commercial and utility-scale solar PV plants.
  • Battery energy storage systems (BESS).
  • Solar-powered backup and hybrid solutions for farms, resorts, and households.
  • Energy audits and efficiency solutions.

Track Record
Notable projects include a 1MW solar PV installation at Shalimar Farm, solar carport systems at Kilua Resort, and battery backup systems for Menengai Farms. We are also actively expanding into distributed generation projects in partnership with local and international developers.

Our Philosophy Across Divisions

Regardless of specialty, every JES division is guided by the same principles:

  • Safety First — compliance with OSHA 2007 and ISO 45001:2018.
  • Engineering Excellence — design and implementation aligned with IEC and IEEE standards.
  • Sustainability — embedding renewable, efficient, and resilient practices into every project.
  • Client-Centric Approach — tailoring solutions to unique client needs, ensuring value for money and long-term reliability.

Shaping Kenya’s Future Together

With our Electrical Contracting, Electrical Design & Consultation, Construction, and Solar divisions, Jumba Engineering is uniquely positioned to provide end-to-end turnkey solutions — from concept and design to construction, commissioning, and lifetime maintenance. Each division is a reflection of our history, our expertise, and our unshakable commitment to building a brighter, safer, and more sustainable future.