It's tricky if you are renting unless you can do some deal with the landlord. They won't want you connecting such things to the house electrics. It might be possible to do a solar rig in the garden with batteries than can supply an independent circuit, but it needs some care. I expect you could run pumps from 12V dc, but you need an inverter for anything ac.
It could be a good investment for landlords to install solar as they could offer discounted electricity whilst taking some of the gain for themselves.