From here :
https://bg.battletech.com/forums/general-discussion/cost-of-non-mobile-hpgs/msg1675014/#msg1675014Yes.
That's right...
Officially we don't use them, but that doesn't mean we don't need them.
So... from Sarna :
https://www.sarna.net/wiki/Hyperpulse_Generator" Mini-fortresses designed as much to defend ... "
" Aesthetically pleasing, partially to conceal the extent of their fortification ... "
" Usually it is surrounded by a ferrocrete wall ... "
" Possible Star League-era surveillance equipment ( Probes? ) ... "
" Concealed minefields ( pop-up defenses? ) ... "
" Fusion built-in generator ... "
" Medical, MASH and Support features ... "
" Possible Mech support cradles and a full Garage ... "
So, what would you design? Keeping it small to represent the Aesthetically pleasing aspect, so some grounds and with a Level 1 wall or grass berm w/ a Level Half wall? ( Chain link or solid. ), defenses inside wall and some off-limits area.
Have fun and good luck!
TT