Option for shaper to limit current instead of power

[lutorm]

In all installations I've ever dealt with, the service limit is in terms of current, through the main fuses, rather than power. I think it would be more straightforward to have a shaper option that limits current directly rather than going through power since, if the line voltage drops at high load, the same power will correspond to higher current but the current is what's fixed. Another issue with controlling power is that if there's significant reactive power in the circuit, this will increase the current and lower the margin to tripping the main breakers without affecting the real power.

I'm not actually sure what a service limit in terms of power would look like. I guess in some jurisdictions there's a "power tariff" where the fee for maintaining the installation isn't based on main fuse capacity but rather on the peak power that would make it desirable for the shaper to use power rather than current, but it seems like that rather soft limit could be handled with current limiting, too.