They're cheaper and safer than their lithium counterparts, they're easier to scale-up, and they can hold power for much longer than conventional batteries, so why aren't flow batteries better known? The technology has been under development for decades, but enthusiasts now say they're finding their place in the sun. Also, why more and more cargo companies are turning to wind-power; and do developing countries need to rethink their approach to off-grid power.

Guests

Emeritus Professor Maria Skyllas-Kazacos — School of Chemical Sciences and Engineering, University of New South Wales

Emily Mahoney — Researcher, Malapit Lab, Northwestern University (US)

Adjunct Associate Professor Jens Noack — Australian Institute for Bioengineering and Nanotechnology, University of Queensland

Associate Prof Paul Munro — Associate Professor in Human Geography, The Environment and Society Group, University of New South Wales

Gavin Allwright — Secretary General, International Windship Association