Solar Energy in Hengchun
Hengchun is located at 22.0°N, 120.7°E in Taiwan. Here's what solar energy looks like for homeowners in this area.
Annual Irradiance
1,710
kWh/m²
Peak Sun Hours
4
hrs/day
3 kWp Output
4,413
kWh/year
Solar Score
65
/ 100
What does this mean for your roof?
Hengchun receives approximately 1,710 kWh/m² of solar irradiance per year, which translates to 4 peak sun hours per day. This is good for residential solar energy production.
With a solar score of 65/100, Hengchun ranks #16 of 78 cities in Taiwan for solar potential in our atlas.
A typical 3 kWp residential solar system (7 panels) in Hengchun would produce approximately 4,413 kWh per year, sized for the average household in Taiwan.
The best months for solar production in Hengchun are May – August, while the lowest production occurs during November – January. Being in the northern hemisphere, south-facing roofs capture the most annual sunlight.
Estimated savings in Hengchun
System Cost
NT$134,000
3 kWp, before incentives
Annual Savings
~NT$8,420
At NT$3.14/kWh
Payback Period
~16 years
Before local incentives
25-Year Net Result
~NT$135,000
Savings minus system cost
These are approximate figures based on a standardized household consumption of 5,000 kWh/year and an estimated electricity rate of NT$3.14/kWh in Taiwan. Local incentives may reduce the upfront cost — check current subsidy, tax-credit, or VAT programs in Taiwan, as these can meaningfully shorten the payback period.
Figures are estimates based on typical system assumptions and the latest available electricity-price and billing data for Taiwan. Actual costs, tariffs, net-metering rules, and incentives vary by utility and change over time — confirm with a local installer or energy authority before making decisions.
How solar billing works in Taiwan
Exports and imports are priced separately, usually at different rates.
In Taiwan, rooftop solar appears to fall under a net-billing-style approach, where the energy you export and the energy you import are typically valued separately rather than simply cancelling out. Exports are often credited at a rate that may be lower than the retail price you pay for imported power, which generally rewards using your own generation as it is produced. The precise export and import prices vary by region and utility and change over time, so they should be confirmed locally.
Get your exact numbers
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Solar tips for Hengchun homeowners
Face panels south
In the northern hemisphere, south-facing panels capture the most annual sunlight. East-west split systems also work well.
Optimal tilt angle
For Hengchun, the energy-optimal panel tilt is about 20° from horizontal.
Size your system right
For the average household in Taiwan, a 3 kWp system (7 panels) covers most electricity needs. Use our calculator for a personalized estimate.
Check local incentives
Local incentives may reduce the upfront cost of residential solar — check current subsidy, tax-credit, and VAT programs with your energy authority in Taiwan.
Gear to prepare for solar
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Solar in other Taiwan cities
Frequently asked questions about solar in Hengchun
How much do solar panels cost in Hengchun?
A typical 3 kWp residential solar system in Hengchun, Taiwan costs approximately NT$134,000 before incentives — this is an estimate based on typical regional pricing. Local incentives such as subsidies, tax credits, or VAT exemptions may reduce the upfront cost; check current programs in Taiwan.
How are solar exports valued under net billing in Taiwan?
Under a net-billing-style scheme, exports from your system in Taiwan are typically bought at one rate while the electricity you import is charged at another, and the two are usually not the same. Because the export credit may be lower than the retail import price, consuming your own solar power directly tends to be the most valuable option. Actual rates vary by region and utility and can change, so confirm the current figures with a local installer or energy authority.
How much electricity do solar panels produce in Hengchun?
A 3 kWp solar system in Hengchun produces approximately 4,413 kWh per year, based on 4 peak sun hours per day and 1,710 kWh/m² annual irradiance.
What is the solar panel payback period in Hengchun?
Based on Taiwan's electricity rate of NT$3.14/kWh, a 3 kWp system in Hengchun pays for itself in approximately 16 years before incentives. After that, the electricity it generates is essentially free for the remaining panel lifespan of 25+ years.
Which direction should solar panels face in Hengchun?
In Hengchun, panels should ideally face south since it's in the northern hemisphere. The optimal tilt angle is about 20° from horizontal.
How many solar panels do I need for my home in Hengchun?
A typical household in Taiwan uses the equivalent of a 3 kWp system (7 panels). With 4 peak sun hours per day in Hengchun, this covers most electricity needs. Use our calculator for a personalized estimate.