====== Solar thermal capacity factor ======
The calculation of the capacity factor for [[d_solar|solar thermal]] is based on the SPF model <sup>[[#References|[1]]]</sup> with radiation data from the village of Verbier. It has been assumed that the mean temperature of the water inside the pannel is 40°C.

===== References =====
[1] John A. Duffie, William A. Beckman (2013), Solar Engineering of Thermal Processes, 4th Edition