Naivasha • Nakuru • Nairobi 0745 667 327 | 0731 322 094
ENGINEERING EXCELLENCE IN KENYA

Smart Security.
Reliable Energy.

We design and install professional CCTV, solar backup, and network infrastructure that works—even when the power goes out.

Start Site Survey WhatsApp Us

Quick Planner

Best Match

Select your primary goal:

Residential Hybrid

Best for town houses requiring 24/7 security and lights during blackouts.

Technical Specs:

4 Full-Color Cameras
3kW Hybrid Inverter
Lithium Battery Ready
Mobile App Sync
Solutions

Engineered for Performance

CCTV Systems

HD Surveillance with phone viewing.

Solar Power

Off-grid and backup solutions.

Electric Fencing

Perimeter security & alarms.

Networking

WiFi mesh & structured cabling.

Knowledge Base

Insights & Tech Guides

Solar Maintenance
Client Guide
5 Reasons Your Solar Battery Isn't Lasting All Night

Most Kenyan homeowners struggle with battery life during cold seasons. Here is how to fix it...

4 min read
Tech Specs
Technical Specs
Mastering IP Camera Networking & Bandwidth Management

A deep dive for techs into managing bitrates on large-scale NVR deployments...

8 min read
Security Home
Client Guide
Wired vs Wireless CCTV: Which one is safer for your home?

Don't be fooled by convenience. We break down why hardwired systems still win in security...

5 min read

Solar Sizing Calculator (Engineer-Grade)

Get a professional recommendation: inverter size, battery capacity, solar panels, and a clear explanation — even if you’re new to solar.

Uses surge allowance + losses + safety factor
1) System Goals & Site Assumptions

These settings change the sizing logic (PSH, losses, battery depth-of-discharge).

8
Tip: 12V (small), 24V (medium), 48V (large systems).
2) Appliances

Mark items as Critical if you need them during blackouts (lights, WiFi, TV, fridge).

Appliance
Watts
Qty
Hrs/Day
Type
Critical
Tip: Motors (fridge, pump) need surge power at startup. Set “Type” to Motor.
3) Recommended Specs
Smart sizing
0.0 kWh/day
Critical energy: 0.0 kWh/day
Inverter
—
—
Battery
—
—
Solar Panels
—
—
System Voltage
—
—
Protection & Balance of System (recommended)
DC isolator, PV fuses, SPD, AC breaker, earthing.

PSH, losses, DoD, inverter efficiency, surge allowance will appear here.
Request Technical Survey
Note: This is an engineering estimate. Final specs depend on roof space, shading survey, cable runs, and exact appliance models.

Solar Calculator FAQ

It gives a solid starting estimate using your loads, location, and system losses. Final sizing depends on shade, roof area, cable runs, and appliance surge behavior.

PSH is the average daily sun energy. Many Kenyan locations range from about 4.5 to 5.5 hours. Use a lower value if your site has heavy shading.

Batteries store energy for night or blackout periods. More backup hours means more stored energy, so the battery bank grows to cover that time.

The inverter must handle your peak load and any motor surge. This calculator adds a safety factor and surge allowance, but a site survey confirms the final rating.

Recent Installations

Clean engineering and neat installations from our certified team.

Solar Project
5kW Hybrid Solar

Residential Backup | Naivasha

CCTV Project
16CH IP Surveillance

Commercial Warehouse | Nairobi

Network Project
Structured Cabling

Office Complex | Nakuru

Client Success Stories

"The solar backup Zonnes installed has been a lifesaver. Our office operations in Naivasha no longer stop during KPLC blackouts. Their cabling work is incredibly neat."

Eng. Maina Kamau
Director, Horizon Logistics

"Superb CCTV installation. I can now view my business in Nairobi while traveling abroad with crystal clear HD. Highly recommended for any security needs."

Mrs. Jane Wambui
Business Owner

Get in Touch

Need a specific quote? Fill in the details and we will reach out via WhatsApp instantly.

0745 667 327
info@zonnes.co.ke
Naivasha, Kenya