☀️ Peak sun hours in Vietnam
Vietnam's sun varies north to south — roughly 4 to 5.2 peak sun hours. The sunny south and south-central coast are highest; the cooler, cloudier north is lower.
| Region | Approx. peak sun hours (annual avg) |
|---|---|
| South & Mekong Delta | ~4.8 – 5.2 |
| South-central coast (Nha Trang) | ~4.9 – 5.3 |
| Central highlands | ~4.5 – 5.0 |
| Northern Vietnam (Hanoi) | ~3.8 – 4.4 |
Use your local figure in the solar panel calculator and the energy production calculator. Background: peak sun hours by location.
⚡ Electricity prices in Vietnam
Grid electricity from EVN is billed in rising tiers, commonly around the equivalent of $0.08–$0.11 per kWh for many residential blocks, with the top tiers higher. Rising demand and tariff pressure keep self-consumption solar appealing, especially in the sunny south.
💸 Incentives & net metering
Vietnam's early rooftop boom was driven by generous feed-in tariffs (FiT) that have since expired. Newer policy has favoured self-consumption rooftop solar, with rules and any export arrangements still evolving under EVN and government regulation. Confirm the latest rooftop policy before sizing anything relying on export.
💰 System cost & payback in Vietnam
Rough planning guide (grid-tied, self-consumption):
| System size | Approx. cost | Suits |
|---|---|---|
| 3 kWp | ~$1,800 – 3,200 | Small home, daytime use |
| 5 kWp | ~$3,000 – 5,000 | Family home / higher use |
| 10 kWp | ~$5,500 – 9,500 | Large home / small business |
Work out your own numbers with the ROI calculator and the bill savings calculator, or design the whole system with the system report builder.
💡 Local insight: Vietnam
Vietnam's solar boom was extraordinary — feed-in tariffs triggered a rooftop and utility-scale surge that few countries have matched for speed. Now that the early FiTs have ended, the smart approach is sizing a rooftop system to your own daytime consumption rather than banking on export income. The south and south-central coast enjoy strong, steady sun, so production there is excellent; the north is noticeably weaker and cloudier, which changes the payback maths.
🧰 Solar tools
Plan your system with these:
- Solar panel calculator — how many panels for your usage and sun hours.
- Solar bill savings calculator — how much you'll save.
- ROI calculator — payback period.
- Battery calculator — if you want backup.
- Full system report — design the whole system in one page.
Related reading: solar panels in hot climates, how many panels to run a house, and ROI calculator.
❓ Frequently asked questions
How many peak sun hours does Vietnam get?
About 4 to 5.2. The south and south-central coast are highest; the northern regions around Hanoi are lower and cloudier.
Is solar worth it in Vietnam?
Yes, especially in the sunny south, sized for daytime self-consumption. The early feed-in tariffs have ended, so returns now come mainly from offsetting your own use.
Does Vietnam have net metering or feed-in tariffs?
The generous early feed-in tariffs have expired; newer policy favours self-consumption rooftop solar, with export rules still evolving. Confirm the latest EVN/government policy.
How much does solar cost in Vietnam?
Roughly $3,000–$5,000 for a 5 kWp home system. Get local quotes.
Note: Vietnamese EVN tariffs, rooftop-solar policy and prices change over time. These figures are approximate, for planning only — verify with EVN and a local installer.