FUD Zilla writes the lower power consumption will enable laptop makers to use a battery with a lower capacity without compromising battery life. This not only saves weight but could also shave some dollars of the retail price of your next laptop.
Intel expects that Skylake based notebooks can end up 1mm thinner by going from 35Whr 500Whr/L 10Kmm2 board to a 25Whr 500Whr/L solution.
The company believes that this will result in a 50 grams weight reduction, assuming companies go for 25Whr batteries, and it is possible to slim down the overall design even further, but an 0.3mm reduction in the z-axis (height) on the screen (glass + touch + display) assembly.
Considering that both Broadwell and Skylake are using the same 14nm manufacturing process, this looks like a nice achievement, especially since Intel wants to play the "no wires, no passwords" game with Skylake. The company hopes that many manufactures will start offering wireless inductive charging pads.