Bibliographic references

Sources of the models and standards used by Radiaris.

Irradiance and transposition

• Perez, R., Ineichen, P., Seals, R., Michalsky, J., Stewart, R. (1990). Modeling daylight availability and irradiance components from direct and global irradiance. Solar Energy 44(5).
• Hay, J. E., Davies, J. A. (1980). Calculation of the solar radiation incident on an inclined surface.
• Reindl, D. T., Beckman, W. A., Duffie, J. A. (1990). Diffuse fraction correlations. Solar Energy 45(1).
• Klucher, T. M. (1979). Evaluation of models to predict insolation on tilted surfaces. Solar Energy 23(2).
• Duffie, J. A., Beckman, W. A. Solar Engineering of Thermal Processes. Wiley.
• Holmgren, W. F., Hansen, C. W., Mikofski, M. A. (2018). pvlib python: a python package for modeling solar energy systems. Journal of Open Source Software 3(29).

Optical losses

• Martin, N., Ruiz, J. M. (2001). Calculation of the PV modules angular losses under field conditions by means of an analytical model. Solar Energy Materials & Solar Cells 70.
• Marion, B. (2017). Numerical method for angle-of-incidence correction factors for diffuse radiation incident photovoltaic modules. Solar Energy 147.
• Sjerps-Koomen, E. A., Alsema, E. A., Turkenburg, W. C. (1996). A simple model for PV module reflection losses under non-normal light incidence angles.

Spectrum and low irradiance

• First Solar (2013). Spectral correction for PV performance modeling (model implemented in pvlib as spectral_factor_firstsolar).
• Gueymard, C. (1994). Analysis of monthly average atmospheric precipitable water and turbidity in Canada and northern United States. Solar Energy 53.
• Huld, T., Friesen, G., Skoczek, A., et al. (2011). A power-rating model for crystalline silicon PV modules. Solar Energy Materials & Solar Cells 95.

Temperature and electrical model

• Faiman, D. (2008). Assessing the outdoor operating temperature of photovoltaic modules. Progress in Photovoltaics 16.
• IEC 61853 (series). Photovoltaic module performance testing and energy rating.
• De Soto, W., Klein, S. A., Beckman, W. A. (2006). Improvement and validation of a model for photovoltaic array performance. Solar Energy 80.
• PVsyst documentation: parameterisation of the single-diode model.

Bifacial modules

• Mikofski, M., Fernandez Solas, S., Deline, C., et al. (2019). Bifacial radiance infinite sheds model (model implemented in pvlib as infinite_sheds).

Inverter

• Dobos, A. P. (2014). PVWatts Version 5 Manual. NREL/TP-6A20-62641.

Shading

• Substring and bypass diode model developed from the module's single-diode model; see Objects and shading model.

Weather data

• PVGIS (Joint Research Centre, European Commission): typical year (TMY), ERA5 and horizon.
• NASA POWER (NASA Langley Research Center).
• Hersbach, H., et al. (2020). The ERA5 global reanalysis. Quarterly Journal of the Royal Meteorological Society 146.

Regulations (Spain)

• Royal Decree 842/2002, Low Voltage Electrotechnical Regulation, ITC-BT-06, -07, -19, -22 and -40.
• UNE 20460-5-523 and UNE 20460-4-43.
• IEC 62548: design requirements for photovoltaic arrays.
• Royal Decree 244/2019, on self-consumption of electricity (simplified compensation).
• INSPIRE Directive and the buildings service of the Spanish Directorate General for the Cadastre.

Resource estimation and economics

• Reference consumption values: IDAE and Eurostat.
• Reference costs: Spanish market 2025 (indicative, editable values).