Simplifying Solar PV System Design for Contractors & Engineers 

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🟦 Slide 1 – Hook Slide (Attention Grabber)

STOP Guessing Solar System Sizes.
Start Designing with Engineering Precision. ☀️⚡

Solar PV design should be fast, accurate, and client-ready — not a spreadsheet struggle.

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🟦 Slide 2 – Problem Slide

The Real Problem in Solar Projects:

❌ Manual calculation errors
❌ Oversized or undersized systems
❌ Delayed proposals
❌ Poor battery & inverter matching
❌ Cost overruns

One wrong assumption = Reduced ROI + Client dissatisfaction.

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🟦 Slide 3 – The Engineering Foundation

Every Solar PV System Starts with 4 Core Calculations:

🔹 Daily Energy Demand
🔹 PV Array Size
🔹 Battery Capacity
🔹 Inverter Rating

When these are correct → The entire project becomes stable.

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🟦 Slide 4 – Solar PV Sizing Formula

Step 1: Daily Energy Demand

Daily Energy (Wh)
= Total Connected Load × Operating Hours

This defines the foundation of the entire system.

No guesswork. Only load profiling.

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🟦 Slide 5 – PV Array Sizing

Step 2: Required PV Capacity

Required PV Size (W)
= Daily Energy ÷ (Peak Sun Hours × System Efficiency)

Then,

Number of Panels
= Required PV Size ÷ Panel Watt Rating

This ensures optimal generation without overspending.

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🟦 Slide 6 – Battery Bank Design

Step 3: Battery Capacity

Battery Capacity (Ah)
= Daily Energy ÷ (Battery Voltage × Depth of Discharge × Efficiency)

Correct battery sizing =
✔ Reliable backup
✔ Longer battery life
✔ Lower replacement cost

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🟦 Slide 7 – Inverter & Controller Sizing

Step 4: Power Electronics Sizing

Inverter Rating
= Peak Load × Safety Factor

Charge Controller Rating
= Total Array Current × Safety Margin

Because protection & stability matter.

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🟦 Slide 8 – The Game Changer

Now Imagine This…

✔ All formulas automated
✔ Instant system sizing
✔ Error-free calculations
✔ Client-ready proposal sheets
✔ Cost optimization dashboard

That’s where digital engineering tools change the game.

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🟦 Slide 9 – What I Help With

I help contractors & engineering teams:

⚡ Automate solar design calculations
⚡ Build Excel-based PV sizing tools
⚡ Develop smart design dashboards
⚡ Improve QA accuracy in solar projects
⚡ Speed up project estimation

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🟦 Slide 10 – Authority & Positioning

Solar design is not about panels.
It’s about engineering logic.

When calculations are right —
Execution becomes easy.
Quality improves.
Profits increase.

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🟦 Slide 11 – Call to Action

If you’re a:

🔹 Solar Contractor
🔹 EPC Company
🔹 Electrical Consultant
🔹 Project Manager

Let’s connect and optimize your solar design workflow.

📩 Comment “SOLAR” or DM me to discuss.

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