The finite amount of energy available for efforts above your Critical Power.
W' (pronounced 'W-prime') represents your battery of anaerobic energy, measured in Joules. When you ride above Critical Power, you deplete this battery. When you ride below CP, you can slowly recharge it.
Work done above CP (Watts x Seconds)Crucial for race strategy. Knowing your W' helps you understand how many matches you can burn before you blow up.
Pedaloom calculates this automatically for every ride. Unlock your potential today.