Solar weather-normalized comparison calculator

Calculate irradiance-normalized production and mean normalized production with your own figures.

Your numbers

Use the units shown. Results update as you change valid inputs.

Use irradiance-normalized production and mean normalized production to compare changes to your inputs. The method and limits below explain the scope.

Examples

Examples

Try the starting example

Measured production by period (kWh)
800,1000,900
Plane irradiation by period (kWh/m²)
100,125,110
Common comparison irradiation (kWh/m²)
100
Irradiance-normalized production (JSON)
[800,800,818.181818182]
Mean normalized production (kWh)
806.060606

Try another scenario

Measured production by period (kWh)
[801, 1000, 900]
Plane irradiation by period (kWh/m²)
[100, 125, 110]
Common comparison irradiation (kWh/m²)
100
Irradiance-normalized production (JSON)
[801,800,818.181818182]
Mean normalized production (kWh)
806.393939
Calculation method

Calculation method

Irradiance-normalized production (JSON)

Linear irradiation normalization only; temperature, curtailment and availability not corrected.

Mean normalized production (kWh)

Linear irradiation normalization only; temperature, curtailment and availability not corrected.

Symbols and units
a
Measured production by period (kWh)
b
Plane irradiation by period (kWh/m²)
c
Common comparison irradiation (kWh/m²)

Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.

Assumptions & limits

Assumptions & limits

  • User-supplied measurements and assumptions; Linear irradiation normalization only; temperature, curtailment and availability not corrected. Supported limits: Finite numeric values bounded to 1e9 magnitude; lists and tables contain 1–100 records unless a stricter bound is stated. Inputs use the units shown. Lists explicitly paired by a method must have matching lengths; independent polynomial coefficient vectors may differ. Respect stated physical, interpolation, policy and computational domain limits.
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Further reading

Method reference ↗

Background reading; this does not imply endorsement or independent review of SumFizz.

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