Renewable energy

My house has a south facing garden, and I would love to be able to put all the unused sun light to good use.
I am unable to buy solar panels
Surely companies like bulb could rent my roof??

Link: https://help.bulb.co.uk/hc/en-us/articles/115003599871-I-have-solar-panels-Can-I-get-my-FIT-payments-from-Bulb-

From what I understand its up to you to get the panels installed from whatever method you like, then you can ask Bulb to pay you for the energy the panels send into the grid.