Hydrogen + wind/solar still a winner?
I have really enjoyed your presentation so far, it is simple, clear and witty. However, on the latest chapter (17B) I think you haven’t given hydrogen its fair due. Yes, it’s a battery, and yes people are talking about it incorrectly, but that’s not the whole story. If hydrogen is produced through wind and/or solar energy, it seems from your chart that the net energy would be around 5 or 10 to 1, which is still significantly higher than the other alternative forms of energy mentioned (corn ethanol, methanol, bio-diesel, etc).The big problem with hydrogen is storage and transport, both of which would also reduce net energy. Any hydrogen would have to be produced on-site to limit transport costs, and as much on-demand as possible to limit storage costs.
More traditional batteries may be what makes hydrogen a no-go, as they likely have a greater net efficiency.