I got burned over $20K within last 4 months and got nothing from an other marketing company. 

That doesn't include any maintenance costs or other variables.I regularly argue that solar energy is rarely worth the investment.

So I am not sure whether I really need sources of passive income right now considering that I have a lot of energy that I can spend on investment strategies that require more efforts and energy.

We got burned on sober living due to state under regulation switching to over regulation.

Growing cannibus can require high energy and water consumption

You are better off making a small investment on your own, maybe a two-family, and use it as a proof of concept.If you don't know anything, trying to source deals off-market will just be taking money and burning it on postcards without the correct systems behind and the incentive for people to call.

Robert Burns

Evaluate the numbers and your time energy lifestyle for managing rentals out of state and how those align with your why you're investing in RE. 

You can also write it off as a business expense and there could be additional tax benefits for energy efficient home improvements.  

@Natasha BradfordTo save your hard-earned cash and energy, I strongly suggest signing up for one of the many wholesale programs available.