I just got back from dinner and Lisa's on it, but I think we lost:
2 storage machines (not yet used)
16 web nodes
So I guess it's our fault since we tripped a circuit breaker and weren't tracking how much power we were using. But how should we know? We had no means of monitoring it, and servers don't exactly say anywhere how much they're using. Guess this was our lesson learned. Time to buy some power meters and stuff.