If you buy a package that's not over a thousand dollars,
yes it will use less power.
I'm of the mindset that the gains from dees comes from keeping them really close,
and focusing on the specific spectrums.
The actual lumens / watt ratio for dees tend to be less than that of an hps,
So I think it is optimal to run just as many watts as you would with any other system,
I think 80 watts on a plant will produce dense nuggets.
So no, not less power. Especially if you plan on flowering with them.
I'm about to try this out, with my DIY panels which will be putting down 100 or so watts per cutting, with 4 total per fixture.
24 is a decent amount of plants.
How tight are you gonna have them?