i had this happen to me while working IT:
user has problem.
User takes a picture of error message on phone. User sends photo to her email. User Downloads photo from email. User creates word document. User loads photo into the word document.
User prints word document. User sends the printed document to my office by internal mail. Document arrives next day. User calls me to make sure I got it, and explains her issue to me over the phone. Error message she took a picture of is just completely useless information that didn’t help me when troubleshooting issue.
Photovoltaic cells are even less efficient, I think they’re somewhere between 10-20% efficient. I think the way to go would be a solar collector, like the Archimedes death ray, but much much bigger.