Making shipping fuel with off-grid renewables

In this episode, Anthony Wang, co-founder of ETFuels, describes his company’s business model of using renewable energy to make green hydrogen, then using the hydrogen to make carbon-neutral methanol.

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Text transcript:

David Roberts

Anthony Wang, a mechanical engineer by training, spent years as a researcher on hydrogen technologies. He worked with governments to develop policy and infrastructure plans — he was project manager on the EU's big hydrogen backbone project — and with private companies like Total and Shell to develop hydrogen technology roadmaps. He has authored or co-authored several industry-defining reports on hydrogen and been cited in countless publications.

A few years ago, he decided to throw his hat in the ring and try to actually build hydrogen projects in the real world. All his research and contacts in the energy world led him to a very specific — and, to me, extremely intriguing — business model.

ETFuels, the company he co-founded, develops projects that couple giant off-grid renewable energy installations with hydrogen electrolyzers; it then uses the resulting green hydrogen to synthesize carbon-neutral liquid fuels. (First up is methanol for shipping, but the company plans to branch out into other e-fuels.)

This model somehow manages to implicate half the stuff I’m interested in these days — green hydrogen, markets for hydrogen fuels, off-grid renewables, coupling renewables directly with industrial loads — so I was eager to talk with Wang about it. We dug into the limits of “electrify everything,” the difficulty of transporting hydrogen, and the economics of e-fuels, among other things.

This one gets fairly deep in the weeds, but if you find the real-world challenges of developing clean-energy projects interesting, you don’t want to miss it.

All right, then, with no further ado, Anthony Wang. Welcome to Volts. Thanks so much for coming.

Anthony Wang

Thank you so much for having me, David.

David Roberts

So you were sort of recommended to me as somebody who knows a lot about hydrogen, about sort of green hydrogen, the markets. I know you've worked with public on policy roadmaps. I know you've worked with private companies on technology roadmaps. So I know you've given a lot of thought and sort of analysis to the green hydrogen phenomenon, the green hydrogen market. And you settled when you decided to start a company of your own, you co-founded this company, ETFuels. You settled on a very particular business model, which I just find sort of fascinating as it sort of implicates half the things I'm interested in these days in the energy world.

So I wanted to just run through it with you and talk about why you made the choices you did and get into some of the bigger issues that way. So just for listeners' benefit, the idea here is you find a big piece of land somewhere out in the middle of nowhere. You build a bunch of renewable energy, mostly solar, maybe some wind. Instead of hooking the renewable energy up to a grid, you pipe it directly into electrolyzers and make green hydrogen out of it. And then instead of exporting the green hydrogen or selling the green hydrogen, you use the green hydrogen, combine it with CO2 to make methanol, basically, carbon-neutral methanol, which you are then going to sell to shipping companies. So that's a big puzzle. That's a big puzzle with lots of pieces put together. So I want to kind of start at the front end of it. My intuitive reaction to this is you're taking valuable renewable energy and then you're converting it to hydrogen, you lose a lot in that conversion, and then you convert it again to methanol and you lose a lot in that conversion as well. It sounds sort of inefficient.

So the question comes up like, why not just sell the renewable energy? So why off-grid in the first place?

Anthony Wang

For us, obviously, it depends where you're talking in the world, right? So renewable energy, if you can get it connected to the grid, you're completely right, it's extremely valuable. I mean, you've seen what prices of power have done in the last couple of years in Europe and in the US. And if you can use it to electrify your vehicles or heat up a heat pump, that's a very good use of that renewable energy. That said, there are many places in the world where solar and wind, on a levelized cost of production basis, are the lowest cost sources of energy we have.

And on top of that, most of these locations are not connected to grids. And so one question that always puzzled me a bit was everyone's talking about renewable energy getting cheaper and cheaper and being the lowest cost source there is. So why, why aren't we seeing that being reflected at all in, in the prices that we see a) on the wholesale market, and b) ultimately on our bills at the end of the month? And thought a lot about this, and I'm not an economist, but it does seem to me that while we've got very good at producing renewable energy in a very cheap way, I'd argue it's the cheapest that we've got.

We seem to have made a lot less progress in transporting, storing and balancing that renewable energy in a way that meets the consumer when they need it, where they need it. We know also that the energy transition is going to put this massive strain on power grids. Today we transport about 20% of our final energy through the grid. And in a fully decarbonized system, I mean, depending who you talk to, that number should be going up to 60, 70, 80%. We should electrify as much as we can. But that also means that we need about three, four, five times the number of cables, transformers and substations.

And right now the grid does not seem to be set up to deliver that. And so we wanted to marry that problem in a way with an opportunity that we saw in producing hydrogen. And obviously, when you lose 30% through energy, conversion losses. That's a huge deal if your power is super valuable. It's a lot less of a big deal when your power is virtually free, depending on where you are.

David Roberts

So sort of to summarize that renewable energy itself at the point of production is super cheap, but all these balance of system costs, mainly transmission and distribution, end up boosting the cost anyway. So your idea is just to use the cheap renewable energy and avoid all those other costs. Basically just use the cheap energy directly and not have to pay those additional costs?

Anthony Wang

Yeah, exactly. And cost is quite a simple way of capturing it. But there's lots of other things right in projects it's also time. The biggest risk in developing renewable projects is often getting the grid connection permit. I think, not to bash too much on the grids, I've got lots of good friends there, but the numbers speak for this. So if you look at the US, I think the Berkeley National Lab found there's a two gigawatt backlog or 2000 gigawatts, sorry, of PV, wind and storage.

David Roberts

Yeah. Terawatts.

Anthony Wang

Terawatts, exactly. Which is like almost double of the installed capacity base today. And you see similar numbers in Europe. And the cost of interconnection, the deposits that developers are asked to put down are twice what they used to be. They can be almos