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System Size & Panels Calculator

Our system sizing calculator makes it easy to size your solar off-grid requirements.

Steps to follow to claculate your system size:
  • Enter Your Location
  • Fill Out Load Calculator
  • Calculate System Size & Panel Requirements

Step 1: Enter Your Location

Enter your location*, and we’ll look up the the sun hours in your area.

Error: The National Renewable Energy Laboratory?s PVWatts Calculator does not have climate data for this location. Please try another location. Or add peak sun hours per day.

*You must enter your address to gather data.

How many Sun Hours a day do you average in the darkest month?

We’ll start by using your low sun hours to size your PV array. Keep in mind your exact needs may vary depending on how your system will be used.

Step 2: Fill Out Load Calculator

Fill out the table below to estimate energy usage. We’ve included some common appliances found in homes and commercial buildings. Try to account for everything, keeping in mind that an off-grid setup should make use of efficient appliances, and loads like instant showers, ironing boxes, electric cookers e.t.c should ideally not be included.

Solar Load Calculator

Appliance Quantity Power Rating (Watts) Average Daily Usage (Hours) Watt Hours per Day
Total Watts - (Peak Load)
0
Total Watt Hours per Hours:
0
Kilowatt Hours Per Day:
kWh/day

If you already have this total, you can enter it here.

Step 3: Calculate Off-Grid System Size

We'll estimate your off-grid system size based on the list of appliances and energy usage that you entered. Keep in mind that this is only an estimate, and there are many factors that can influence system sizing. Please contact us for help designing your project.

Click the "Calculate My System Size button" and we'll calculate your system size.
Calculate My System Size
Minimum PV
System Size

Kilowatts

As mentioned before, this is a very basic system size estimation. It is intended to give you a general idea of what your Off-Grid solar system sizing needs would be. This system size is designed to generate the electricity needed to power the daily loads you entered into the load calculator. There are many other factors unique to your specific location and application that can effect the size off the Off-Grid solar system you need. Factors such as whether this is a seasonal property or full time, shading implications, azimuth & tilt of the solar panels, unaccounted peak load variations, available space in your main service panel (MSP), and that is just to name a few.

Here are the results of your form submission. If you would like us to email you a copy, enter your email address below.

Connect with our solar experts for a free quote

Still need help to determine you load size and the quantity of solar equipment equipment you need? Reach out to us to get support on any of the below items from our technical team.

01
1. Custom design

Our technical team can visit your location for a site survey ensuring that the system designs are done as per your specifications.

02
2. Load sizing support

We can provide you with technical support to aid in actual load sizing using our specialized energy consumption data logging equipment.

03
3. Consultancy

We can provide free consultancy on the loads to consider including in the system so as to ensure you get the most cost effective solution. 

Contact Us Today

Call us: +254-748-707766