☀️
SOLAR HOME PHILIPPINES

Solar Savings &
ROI Calculator

See exactly how much a solar system saves you — computed step-by-step, the same way our engineers do it.

System kWp × Peak Sun Hours × ₱/kWh Rate × 30 Days = Monthly Savings
Configure Your Solar System
🔔
Rates Updated — March 2026 Meralco rate is now ₱13.82/kWh (up ₱0.64 from Feb 2026). Select your distribution utility below to auto-fill the current rate.
Select System Size
3
kWp
5
kWp
10
kWp
15
kWp
20
kWp
System Size (kWp)
kWp
Electricity Rate (₱/kWh)
₱
System Cost (₱)
₱
Distribution Utility (Auto-fills rate)
Peak Sun Hours per Day 4 hrs
3h3.5h4h4.5h5h5.5h6h
Step-by-Step Computation
1
×
System Size × Peak Sun Hours
10 kWp × 4 hrs
40 kWh
Daily Production
2
×
40 kWh × 30 days/month
1,200 kWh
Monthly Production
3
×
1,200 kWh × ₱13.82/kWh
₱16,584
Exact Monthly Value
≈
=
Rounded to nearest ₱1,000
₱17,000
Est. Monthly Savings
5
×
₱17,000 × 12 months
₱204,000
Annual Savings
6
÷
System Cost ÷ Annual Savings
₱550,000 ÷ ₱204,000
2.70 yrs
Payback Period
✅ Your Estimated Annual Solar Savings
₱204,000
₱17,000/month · 10 kWp · ₱13.82/kWh
⚡
40 kWh
Daily Production
📅
1,200 kWh
Monthly Production
💰
₱17,000
Monthly Savings
📈
₱5.1M
25-Year Gross Savings
🔄
2.70 yrs
Payback Period
🌿
8.6 tons
CO₂ Offset / Year
Annual savings as % of system cost 37%
Year 0 — Investment Break-even: Year 2.70 Year 25 — Full savings
Cumulative Savings — Year 1 to 25
Yr 1Yr 5Yr 10Yr 15Yr 20Yr 25

Ready to make this real? ☀️

Get a FREE site assessment and precise quote from Solar Home's engineering team — no obligation, no pressure.

📋 Get Free Quote
Estimates use: System kWp × Peak Hours × ₱/kWh × 30 days. Actual savings vary by site conditions, shading, and utility rate changes. Electricity rates sourced from official DU advisories — March 2026. CO₂ offset based on Philippine grid emission factor of 0.6 kg/kWh. Solar Home provides a precise assessment during your free site survey.
How This Calculator Works
Step 1 — Daily Production System kWp × peak sun hours = kWh your panels generate each day. Default 4 hrs is a conservative Philippine average (actual range: 3–5.5 hrs depending on location).
Step 2 & 3 — Monthly Value Daily kWh × 30 days = monthly production. Monthly kWh × your electricity rate = the peso value of electricity your solar system replaces each month.
Step 4 & 5 — Annual Savings Monthly savings rounded to the nearest ₱1,000 × 12 months = your annual savings estimate.
Step 6 — Payback Period System cost ÷ annual savings = years to fully recover your investment. After payback, all savings are pure gain for the remaining 20+ years of panel life.
25-Year Value Annual savings × 25 years (typical panel lifespan) = gross lifetime value. Blue bars show years after payback — yellow bars are still recovering cost.
Rates are Current Utility rates updated to March 2026 from official DU advisories. Select your utility to auto-fill the latest verified rate.