This will allow us to only invest time and energy on deals we believe are a good fit for us and discard the rest. 

I would reach out to Good Energy Solutions (SunPower Elite dealer in Lawrence)Regarding claiming the 30% tax credit on rental property: I've always been told no (including by my own CPA). 

I am telling you this works wonders, saves time, energy, and brings you the deals you want!

Personally if I had to spend tens of thousands of dollars I would not do it, just because I would use my energy on bettering myself in real estate or the trade I was involved in as you mentioned. 

A decent w/d should last you 10 years without issues and will give your apartment a boost for renters shopping for an apartment (Possibly even increase monthly rent?).

At 25 years old where is my energy/ investment best placed in regard to getting started and generating passive income.

@Steven Cowles  If you have done 12 successful Flips, I'm surprised you are so hesitant at your ability to achieve a successful buy and hold to be honest.  12 flips is a great accomplishment and you should take that energy and confidence into your buy and hold investment.  

Electric dryers and water heaters consume a lot of energy. 

I don’t feel bad about taking advantage of the tax credit (from the GW Bush presidency some may be surprised to learn;)), because every form of energy is heavily subsidized, not just solar. 

As nice as the inside is we need to boost the curb appeal for maximum rent!