With the decentralization of energy and the possibility to automate the exchange of electrons using distributed ledger technologies (DAG's, blockchains, etc.) energy farming may become a significant economic activity in the future.
This type of farming will even be feasible in cities.
Energy farming will likely add very significant in rural and remote areas where the grid does not currently extend or is currently unreliable.
Smaller rural grids between neighbors will be possible in future which will allow diversification of activities.
A renewable energy farmer may maintain a small solar farm or bio-gas generator plant to supply power to his or her neighbors to enable their own economic activities.
Solar PV does require some specialized maintenance, but something like bio-gas plant is a bit more complicated.
Simply putting a solar panel out on the lawn is not sufficient. They need to be cleaned regularly to generate at optimum capacity.
Grass and other vegetation also needs to be kept in check so that it doesn't shade the panels and also to prevent damage from seasonal fires in the vicinity of the panels and cabling.
IOT enabled meters wired up to a Distributed ledger will then automate value exchanges, billing and accounting.