Before determining what kinds of energy improvements to make I would first look at what you are working with and why you want to improve the energy efficiency. 1.

It can also avoid the time and energy of having to deal with fixing the damage caused by and evicting the tenant.

The AC installer company said the reason is the Inverter motor which government asked to change all AC to have this motor to save energy.

We did a lot of BRRRRs before, while the market still had inventory, Milwaukee has gotten so competitive that buying distressed makes typically not much sense at the moment and we buy basically move in ready properties.I would rank selling real estate before flipping, just a better return on your time and energy.

Pushes energy prices upwards.  

This is tedious, cumbersome and annoying, but a better use of time and energy then analyzing a property, seeing it, speaking with the listing broker or getting a pre qualification.

Are there any other types of real estate that might represent value sector, energy, healthcare, etc. 

Getting an MBA would not help me one bit, so I'd say that's probably a waste of time, money and energy. 

The prices for a rehab are a great value (under $100,000) but I don't have time or mental energy to do a BRRRR (did a renovation in California and doing a rehab out of state doesn't sound appealing to me).

Great energy with this group.