To begin, let's examine the first card - the reversed Knight of Swords. In this position, the card represents an obstacle or a stalemate. The message it gives us is that there may not be an instant or simple solution to making a big profit through an investment in renewable energy. However, if you look at things from a broader point of view, the reversed Knight of Swords can also mean that one must be prepared to face difficult challenges and overcome them. So, one solution could be to commit to researching and exploring innovative strategies to create a big income through an investment in renewable energy.

The second card in your reading is The Emperor. This card represents authority, leadership and power. The Emperor suggests that you need to take the reins of the situation and take control of your life. It could indicate that the best alternative solution is to take all necessary steps to make renewable energy investments profitable and generate a large return. Furthermore, The Emperor also means that you must be ready to face difficulties with determination and courage.

Finally, we have the Seven of Cups. This card represents ambition, desire and vision. The Seven of Cups indicates that you need to make the best decision for yourself taking into account your current circumstances. By trying to make informed and educated decisions you could set things in motion in the right direction to realize big returns through an investment in renewable energy in the medium term.

From the three tarot cards analyzed, we can deduce that there is the possibility of making large gains through an investment in renewable energy in the medium term, but you must be ready to face difficulties and take control of your life to make the best decisions for yourself. So, if you're willing to commit to your own personal development, there's a chance you could profit from this type of investment in the long run.