ENGINEERED SYSTEMS. BUILT FOR REAL LIFE.

Power Up
Your Connections.

Electrical · Solar Energy · Security · Networking

We design, install and support integrated systems that keep homes, businesses and institutions powered, connected and secure.

Request a Quote → WhatsApp Us
6+Years technical experience
50+Projects completed
4Core disciplines
DENJI SYSTEMS installed solar inverter and battery system
FEATURED PROJECT Doctor's Farm House — Machakos Off-grid Solar · CCTV · Remote Monitoring
DESIGN · INSTALL · SUPPORT
Scroll to explore
About Us

Built on
Expertise &
Innovation

DENJI SYSTEMS is a leading provider of electrical, solar energy, and smart security solutions in Kenya. We empower homeowners, businesses, and institutions to achieve energy efficiency, safety, and reliability through modern, sustainable technologies.

Led by Engineer Dennis Githinji — a Biosystems Engineering graduate with over 6 years of hands-on field experience — we blend technical precision with professional project management on every engagement.

01
Our Mission
Empower homes and businesses with affordable, efficient, and sustainable energy systems designed to last.
02
Our Vision
Become Kenya's leading provider of renewable and smart energy solutions transforming everyday living.
03
Integrity
Transparent pricing, honest advice, and delivering on every promise we make to our clients.
04
Community
Driving meaningful impact through sustainable, affordable energy access for all Kenyans.
DENJI SYSTEMS solar installation
DENJI SYSTEMS solar PV installation
DENJISYSTEMSPOWER UP YOUR CONNECTIONS
What We Do

Our Core
Services

One technical partner for the systems your property depends on — from power and connectivity to security and automation.

01
⚡
Electrical Solutions
  • Wiring & rewiring for residential and commercial buildings
  • DB installation, circuit protection & load balancing
  • Energy-efficient indoor and outdoor lighting design
  • Surge protection, earthing systems & safety audits
  • Electrical fault diagnosis and repairs
02
☀️
Solar Energy Systems
  • Customized system design & sizing for any load
  • Hybrid solar + grid integration with LiFePO4 batteries
  • Solar water pumping for agricultural & domestic use
  • Solar water heating systems & heat pumps
  • Ongoing maintenance & remote performance monitoring
03
🔒
Security Systems
  • HD CCTV surveillance for homes, businesses & institutions
  • Intruder alarms, motion sensors & smart notifications
  • Biometric, RFID, and smart card access control
  • Electric fencing, razor wire & perimeter security
  • Mobile and web-based remote monitoring
04
🌐
Networking & IT
  • Structured cabling: CAT6, CAT6A & fiber installations
  • High-speed WiFi setup & coverage optimization
  • Switches, routers & firewall configuration
  • Server room setup: racks, power & cooling
  • IP phone & VoIP systems for business efficiency
Integrated Solutions

Built around
your needs.

We combine specialist services into practical systems designed around the site, the load and the way you actually use your property.

01

Power Backup

Hybrid solar, battery storage and reliable backup for homes, offices and critical loads.

→
02

Smart Security

CCTV, alarms, access control and perimeter systems designed for visibility and control.

→
03

Connected Spaces

Structured networks, Wi-Fi, IP systems and automation that make spaces work better.

→
04

Water & Energy

Solar water pumping, solar water heating and energy-efficient systems for long-term savings.

→
Why Us

What Sets Us Apart

01
Engineered
Solutions are sized and planned around the actual site, loads, operating needs and future expansion.
02
Integrated
Electrical, energy, security and networking systems can be designed to work together as one coordinated installation.
03
Professional
Clear scope, careful installation and practical technical communication from assessment through commissioning.
04
Supported
We stay available for maintenance, troubleshooting, upgrades and system support after installation.
Our Work

Selected Projects

A selection of documented work. We only attach photography to a project when the image has been confirmed for that specific site.

PROJECT PROFILEOl Kalou5-storey · 15 apartments
Electrical + Security
Residential Apartments — Ol Kalou
Electrical and security installations for a 5-storey residential building with 15 apartments.
Doctor's Farm House project in Machakos
6 PHOTOS
Solar + Security + Remote Monitoring
Doctor's Farm House — Machakos
Fully off-grid 5KVA solar system, 4-channel CCTV, Airtel internet and remote monitoring. View documented photos →
PROJECT PROFILENyahururu7.5HP solar pump
Solar Water Pumping
Borehole Solarization — Nyahururu
Designed and implemented a 7.5HP solar-powered submersible pump system for reliable renewable-energy water supply.
PROJECT PROFILEMembleyResidential systems
Solar + Electrical + Security
Maisonettes — Membley
Complete electrical works, 10.2kW hybrid solar, 15.36kWh LiFePO4 battery, CCTV, smart intercom and RISCO alarm systems across two maisonettes.
PROJECT PROFILERuiruElectrical + security
Electrical + Security
Luxury Maisonette — Ruiru
Electrical and security works including load assessment, wiring, testing and CCTV installation for a high-end residence.
PROJECT PROFILEHospitalityRoyal Hotel Suites
Multi-System
Royal Hotel Suites
Electrical, CCTV, POS and internet installation supporting hospitality infrastructure.
PROJECT PROFILEOffice NetworkCNN Advocates
Networking + Security
CNN Advocates Office Network
CCTV, door access controls, Wi-Fi access points, switches and structured cabling for a connected office environment.
How It Works

Our Process

1
Assess
We assess your needs and recommend the best solutions for your specific site and requirements.
2
Design
Custom system layouts tailored to performance, efficiency, and long-term reliability.
3
Install & Commission
Professional execution using quality components with dedicated team leads on every project.
4
Support
After-service checks, system monitoring, and long-term client support for ongoing performance.
DENJI SYSTEMS logo
ENGINEERING · ENERGY · SECURITY · CONNECTIVITY
The Engineer Behind DENJI

Technical thinking.
Practical execution.

DENJI SYSTEMS is led by Dennis Githinji, a Biosystems Engineering graduate with hands-on experience across electrical works, renewable energy, security and connected systems.

Our approach is simple: understand the site, engineer the solution, install it properly and remain available when you need support.

Discuss your project →
Ready to Power Up?

Let's Build
Something Great

Whether you need solar, electrical, security, or networking — our team is ready to deliver a solution tailored to you.

Get a Free Quote 📞 +254 703 132 032
Contact Us

Get In Touch

📞
Phone
+254 703 132 032
✉️
Email
denjisystems@gmail.com
📍
Location
Nairobi, Kenya
⏰
Working Hours
Mon – Sat, 8:00 AM – 6:00 PM