You might be surprised, not only in how much electricity you're using (unless you're using a variable speed pump at a very low rpm setting), but also in the expedited equipment maintenance/replacement costs, too.

I'm trying to find the optimal setting of pump on-time, pump rpms, chlorine production (I've got a SWCG), typical bather load, and resulting water clarity and quality. Even if I'm not at the absolute optimal setting, I'm pretty darn close to it.