From Inhabit:

A Dutch start-up called Plant-e has developed a way to use living plants as a continuous source of clean energy – all that’s needed is a light source, carbon dioxide, water, and, of course, a field or patch of plants. The system works best in wetlands or watery fields like rice paddies, but it doesn’t matter if the water is brackish or polluted, so areas unsuitable for growing crops could be repurposed as a power source. There’s no complicated infrastructure to install, which makes it super easy to bring electricity to isolated regions that are currently without power.

This technology looks like a promising line of enquiry. (Many thanks to Jude Berg for pointing it out.) I love living in this world…