One cool thing about going to a larger pump and a VFD is you have a pretty decent window to play with flow -vs- economy. Pretty much all the drives will display the actual operating parameters like volts, Hz, amps, Kw and such. The fancier ones like the A-B, and I believe the Square-D have built in economic calculators where you plug in KWh rate and they will tell you how many dollars your sucking at the moment and how many you spent since the last time you reset it.
Tie it to a small PLC and HMI and you can do all kinds of fancy things. Punch a dollar figure on the screen, pump me 10 bucks worth, then hit start.
All kinds of fancy things can be done.
Let us know what the driller and electrician say.
