Peak Sun Hours in Indore, Madhya Pradesh, India
- Solar zone
- Zone 4 (excellent)
- Best month
- May (7.3)
- Worst month
- August (3.8)
- Climate
- Tropical · 26.0°C
Monthly solar breakdown
| Month | GHI | Clear-sky | DNI | DHI | Temp °C | Humid % |
|---|---|---|---|---|---|---|
| Jan | 4.46 | 4.70 | 5.15 | 1.55 | 19.3 | 36 |
| Feb | 5.39 | 5.62 | 5.81 | 1.72 | 22.8 | 28 |
| Mar | 6.38 | 6.65 | 6.24 | 1.95 | 27.4 | 23 |
| Apr | 7.14 | 7.41 | 6.75 | 2.02 | 32.0 | 21 |
| May | 7.34 | 7.65 | 6.64 | 2.16 | 34.4 | 30 |
| Jun | 5.72 | 7.16 | 3.46 | 2.70 | 31.1 | 58 |
| Jul | 4.06 | 6.82 | 1.22 | 2.63 | 27.1 | 80 |
| Aug | 3.84 | 6.66 | 1.05 | 2.59 | 25.8 | 87 |
| Sep | 4.68 | 6.18 | 2.69 | 2.42 | 25.8 | 83 |
| Oct | 5.23 | 5.61 | 4.96 | 1.84 | 24.6 | 67 |
| Nov | 4.55 | 4.75 | 5.00 | 1.54 | 22.2 | 55 |
| Dec | 4.22 | 4.38 | 5.29 | 1.35 | 19.9 | 43 |
GHI, Clear-sky, DNI, DHI in kWh/m²/day. Data: NASA POWER climatology (long-term monthly averages).
Off-grid calculator
Add appliances
- Add an appliance to size a system.
Sizing
- Daily load
- 0.00 kWh
- Panel wattage
- 0 W
- Panel count (400W modules)
- 0
- Battery bank
- 0.0 kWh
Sizing against worst-month PSH of 3.84 kWh/m²/day, 0.77 system efficiency.
About solar in Indore
Indore, India has a warm, tropical climate with a distinct wet and dry season. Its annual peak sun hours average 5.25 kWh/m²/day, a excellent solar resource by global standards.
The strongest month in Indore is May (spring) at 7.34 kWh/m²/day, and the weakest is August (summer) at 3.84 kWh/m²/day. When sizing a year-round off-grid system, it's standard practice to design against the August value rather than the annual average — otherwise the battery bank runs low during the darkest weeks.
Indore's solar conditions are well within the range where off-grid PV is a straightforward engineering exercise with standard-sized arrays and lithium batteries.
FAQ
- What are the peak sun hours in Indore?
- Indore averages 5.25 peak sun hours per day annually, ranging from 3.84 in August to 7.34 in May.
- How many solar panels do I need in Indore?
- Panel count depends on your daily load. At Indore's annual average of 5.25 kWh/m²/day, a 5 kWh/day load needs roughly 4 × 400 W panels. Use the calculator above for your actual load.
- What size battery do I need in Indore?
- Sizing against Indore's worst month (August, 3.84 kWh/m²/day) with 2 days of autonomy at 80% depth of discharge, a 5 kWh/day load needs about a 12.5 kWh battery bank.
- How does Indore's solar resource compare globally?
- Indore sits in solar zone 4 out of 5 (where 5 is strongest) at 5.25 kWh/m²/day — excellent by global standards. For reference, top-tier desert sites average ~6.5 and high-latitude cities around 2.5 kWh/m²/day.
- How does the wet season affect solar generation in Indore?
- Indore's dry-season output peaks at 7.34 kWh/m²/day in May; the wet season drops it to 3.84 in August. That ~67% swing is a key sizing consideration.
- Can solar panels survive tropical storms in Indore?
- Most tier-1 PV panels are rated for 140+ mph wind loads; mounting hardware usually fails first. In cyclone-prone regions like India, specify IEC 61215-certified panels and anchor-bolt mounts rather than ballasted.
- What's the dry-to-wet output gap in Indore?
- Indore swings from 7.34 kWh/m²/day in May (dry) to 3.84 in August (wet) — roughly 67%. Year-round off-grid systems must size against the wet-season minimum.