This simulator will calculate a "power 78kg-standard" value, based on F. Portoleau's calculation method (©2013), and a performance threshold (© A. Vayer, the performance expert).
More details about these methods in the watt the fuck ? section.
No Watts on Ventoux climb, why ?
The power calculations are too imprecise because of the wind on top, that's why they're not published. But watts are published for the "forest" section ending at Le Chalet Reynard..