Can somebody tell me if I can fly a Paragon
sailplane ( 3m wing span ) with electric power and what system to use?Thanks in advance.

I used an Astro 15G in mine.. 12 to 14 cells.
Not a spirited performer, but it did well.
Don't neglect to wrap the spars at the joiners.. The joiner WILL pull out in flight if you don't.
I made up a different fuselage for it.. with sticks at the rear end. It came out way too large in retrospect. The next fuselage was a lot slimmer.. made from full-length lite ply.
.
Sparky Paul http://www.angelfire.com/indie/aerostuff
PJB's Seriously Aeronautical Stuff http://www.networkone.net/~pjburke/index.html