I don't believe that we can absorb energy from the sun, but couldn't it cause us to consume less energy? If the cold makes us use more energy then it stands to reason that heat would do the opposite. Plus with adequate vitamin d levels we may be more energy efficient.
We obviously can't survive on just sunlight, but it could allow us to eat less.
In all of the universe there is only one person with your exact charateristics. Just like there is only one person with everybody else's characteristics. Effectively, your uniqueness makes you pretty average.