I've used a stages bike and watts there is a combination of RPM/cadence and resistance. Thus, I think it's equivalent to "output" on a Peloton not resistance. I think it may be possible to figure out what watts needs to be at a certain RPM and adjust the resistance to hit that watt number. It may be a bit complicated as you'd need to know what Watts would be at different RPMs so you may have a table to refer to although maybe you'd memorize it over time. Below is an output table for Peloton from here. Also 1 Watt hour (Wh) is equal to 3.6 kilojoules (kJ).
I'm not sure if that helped but please let us know as I'm sure others have the same question!
Peloton Forum is a community dedicated to all Peloton owners and enthusiasts. We are not affiliated with Peloton Interactive. Come join the discussion about bikes, apps, classes, fitness goals and more!