If you hook your turbo up to a grid of 20W light bulbs you can easily measure your wattage but you must take into account energy losses in the form of heat and vibration due to friction and to electrical resistance
A lot of leisure centres are getting wattbikes. Very similar to an indoor cycle but a closer experience to road biking. These will measure your wattage. They also allow you to analyse your technique in that they show your power curve and leg use ration.
This is the beginners forum. best advice for a beginner regarding power meters is "forget it".
have a turbo set up that stays consistent.
Power meters are how beginners stop being beginners.
i can see the value of power measurement for full time pros' because they can put in the training time to fine tune their performance and make use of the data. for your average amateur, it seems over the top, and probably too much information.
The key to measuring how your training might be going is to have a turbo set up that stays consistent, e.g same tyres, same bike same tyre pressure. Then if you can go faster.farther in a given time, you are producing more power. At the end of the day, it does not matter what your power output is, you only need to know if it is increasing or not.
Articles on training often refer to the riders output in watts.
Is this measured by some device or can it be calculated?