Tenant Rant

I used to be the energy manager for Military Family Housing and I had set point thermostats installed so no residents could change the settings at all. I found that many of them just moved a lamp next to the thermostat in the summer and a baggy with ice cubes sat on it in the winter. Residents will do whatever they want to get what they want, so stop trying to control them.

For peace of mind, estimate the cost of your shop power useage, add 10% to it and then credit them that amount each month while they pay the full power cost themselves for the shop's meter. That way they can have what they want while they are left to pay for it too.

Other than this plan, pay to have a separate meter installed but you may be stuck with the monthly billing since most utilities won't do it for you.