Solar & Battery Sizing Tool

Solar & Energy Storage Sizing Calculator

Estimate your solar system size in minutes with country-aware pricing and expert-level controls.

How can we help you today?

Choose how you'd like to size your system.

Simple Mode
👋 Quick estimate — takes ~2 min
Where are you located?
PSH
Enable to manually enter your site's peak sun hours (overrides regional default).
Included Loads: LED Lights, Fans, Refrigerator, TV, Laptops, Phones, and more.

We'll size your system based on your energy profile.

Solar Array Parameters
Panel Wattage Rating ?
W
System De-rating Loss Factor ?
ratio
Battery Bank Parameters
Lithium Depth of Discharge (DoD) ?
%
Lead Acid Depth of Discharge (DoD) ?
%
Battery Round-Trip Efficiency ?
%
Battery Max C-Rate (Discharge) ?
C
Inverter & System Margins
Inverter Conversion Efficiency ?
%
Inverter Safety Sizing Margin ?
x

Here's What We Recommend

💡
Calculating your custom solar recommendations...
Inverter Size
0.0 kW
Battery Capacity
0.0 kWh
System Voltage
0 V
Solar Array
0.0 kWp
Estimated Cost Range
₦0 — ₦0

Preliminary estimate only. Final design is confirmed after a site assessment and energy audit with an Ecosun engineer.

Your Next Step

What would you like to do next?

Choose how you'd like to move forward with your solar project.

Your Generator Details

Fill in what you know — we've pre-filled sensible defaults from your load. All fields are editable.

Auto-filled from your load. Adjust if you know your actual size.
Pre-filled with current Lagos pump price. Edit if your local price differs.
We assume 3 servicing visits per year.
If you know your exact monthly fuel spend, enter it here — we'll use it instead of estimating.
We use your inputs only for this estimate. Nothing is stored or sent.

Your 5-Year Savings Estimate

🛢️ Generator (5 years)
Fuel —
Maintenance —
Total —
☀️ Solar System (5 years)
System cost (one-off) —
Fuel ₦0
Total —
5-Year Savings
—
Est. Payback
—
Based on your inputs and current Nigerian fuel prices.

Estimated System Bill of Quantities (BOQ)

Daily Energy Profile

Daytime Load
0 kWh
Night Load
0 kWh
Peak Draw
0 kW

System Insights

—
Solar Coverage
of daily load covered
—
Battery Autonomy
of night coverage
—
Peak Capacity
headroom over peak
—
Monthly Fuel Saved
vs running a generator
—
Cost per kWh
vs generator fuel
—
CO₂ Avoided
equivalent to trees planted

What's Included in Your System

  • Solar array — sized to your daily energy needs
  • Battery storage bank — covers your night load
  • Hybrid inverter — manages solar, battery, and grid/generator
  • Balance of system — mounting, cabling, protection
  • Engineering design, installation & commissioning
Exact equipment specs and pricing are prepared with your formal quotation.
Get My Quotation
Engineer's Note

Loading note…

— Ecosun Engineering

Cost ranges reflect current average market estimates for equipment and installation. Final pricing is confirmed after a site assessment and detailed engineering design.

What Happens After You Request a Quote

  1. 1
    Design Review

    We review your calculated system and confirm it against your load profile.

  2. 2
    Site Verification

    Our engineer verifies your load and site conditions for accurate sizing.

  3. 3
    Formal Quotation

    You receive a finalized turnkey quote with exact equipment specs and pricing.

  4. 4
    Install & Commission

    We install, test, and hand over your fully operational solar system.

Frequently Asked Questions

How accurate is this calculator?

It gives a solid preliminary estimate based on your inputs and typical Nigerian solar data. Final sizing is confirmed with a site assessment and energy audit.

Do you offer financing or installment plans?

Yes — flexible payment options are available for homes and businesses. Contact our team for current terms.

How long does installation take?

Most residential systems are installed within 1–3 days. Larger commercial systems may take 1–2 weeks.

What about warranties on the equipment?

Warranty terms vary by manufacturer and are confirmed once your system configuration is finalized. Our team will provide the applicable warranty documentation with your formal quotation.

Ready when you are.

You've sized your system — the next step is an exact quotation. Our team will review your load profile and confirm the details with you.

Get My Quotation Takes ~1 minute · No obligation
or

Ready to Move Forward With Your Solar Project?

You've got your system size — now let's talk about making it happen.

Request Energy Audit / Site Assessment
Get an engineering quote • Speak with a specialist: +234 810 093 0457