Heat stress
Assumption: heatwave intensity = days × 0.3 °C. Weather is weighted ×3 relative to the climate trend. Adjusted stress = weather + climate trend ÷ 3.
Solar heat-stress calculator (simplified)
Explore an illustrative solar example with adjustable inputs. No site weather is loaded in this calculator.
Simplified example calculation with fixed assumptions. The platform models your asset with hourly weather data and pvlib — talk to us.
Book a conversationExample climate inputs
Manually set assumptions, not site measurements.
+1.5 °C
10
+3.0 °C
Adjusted heat stress
Assumption: weather weighted ×3 relative to climate trend
3.5 °C
Physical — component loss breakdown
Assumption: 15 °C cell-temperature baseline above STC + adjusted heat stress.
| Component | β | Temperature | Loss |
|---|---|---|---|
| Jinko Solar 78HL4-BDV 630 | −0.35%/°C | 18.5°C | −6.48% |
| SMA Solar Sunny Highpower PEAK 3 | −0.08%/°C | 18.5°C | −1.48% |
| Total performance loss | −7.96% | ||
System — net solar output
Nominal capacity
0.630 MW
Adjusted example
0.580 MW
MW loss
−0.050 MW
Example system efficiency: 92.05%
Financial — illustrative loss value
Annual example value
€6,079
Not promised savings
Modelled capacity loss
8.0%
Assumption: 1,800 h/year — 49 hours at peak stress + 1,751 hours at baseline.
Whether a retrofit pays off depends on your tariff and the costs. We calculate it with your data.
Book a conversationHow this example works
Assumptions: 1,800 full-load hours/year; 15 °C cell-temperature baseline above STC (standard test conditions at 25 °C); weather weighted ×3 versus climate trend; +12% tracker gain. Component coefficients are fixed example inputs, not a verified equipment assessment.
Component temperature loss
Assumption: 15 °C baseline above STC plus adjusted stress. This temperature is multiplied by the fixed β coefficient (loss per °C) of the selected module and inverter.
Clipping
When inverter capacity is less than module capacity, clipping = max(0, 1 − inverter capacity / module capacity) × 100%. This is a simplified fixed-capacity comparison.
Net output
The component and clipping losses are subtracted from 100%. The remainder is applied to nominal capacity. Assumption: a single-axis tracker adds +12% versus fixed tilt.
Annual example value
Assumption: 1,800 full-load hours are split into heatwave hours (days ÷ 365 × 1,800) and remaining hours. Losses in MW × hours × your electricity price give the example value. It does not mean all losses can be recovered.
Let’s talk about your site
30 minutes, online. When booking, name a park, a MaStR registry number or a substation, or send an asset list in advance. In the call, we show you with numbers which options exist there. Afterwards you decide whether a pilot makes sense.