What is all this electricity for? Is Bryn opening a cafe or a blast furnace?

Large windowless section (too big for its stated function), huge electricity needs, strange planning decisions, secrecy. It's obvious to me what's going on. There's an unspeakable, unnamable lurking
thing being kept in a secure vault inside the skip-shaped section. The electricity is for the force-field and the electrified walls to keep it inside. You've read H.P. Lovecraft, right? I think we all know what's going on here.
I always wondered about the original logo design (before revision):
