[whall6]

I’m having a hard time understanding the seasonal energy storage component. Can you dive into this a bit more? I wasn’t able to find much on your website.

I work in the energy industry and this is one of the largest issues that utilities (and plenty of others) face (and even go as far as installing thermostats that they can control in their customers’ homes).

I’m wondering if there’s anything that can be done to advance the 2030 timeline? Both from an investor and potential customer perspective, that’s a lengthy timeline for such an interesting value prop.

[franckl]

We are building more than a heat pump, it is a novel stirling architecture, that is, a machine that converts electricity to heat, and heat to electricity.

The idea is summarized on this picture https://imgur.com/a/f5T1NYi and is as follow: - solar/wind energy would be converted to heat using our engine and stored into a thermal storage unit (molten salts or sand). This would provide up to 30-40 hours of energy for day-to-day storage. - all year long, the unused energy is converted on-site to green ammonia (with H2 electrolyzers and a small haber-bosch plant) and stored in liquid form at -30C. The ammonia is then burned via a low NOx external burner, something other ammonia engines/turbines can't do well yet without expensive filters, and the combustion heat is turned to electricity with our engine.

This form of storage is much cheaper than storing hydrogen above ground. It competes with H2 storage in under-ground salt caverns without the geographical limitation. The efficiency is far from exceptional, but it is CO2 free and is only used as a "joker" a few days per year.

The whole system is a functional replacement for a natural gas fired power plant.

A company like Form Energy started in 2017, raised hundreds of millions and I think their first pilot is coming next year. Cash is key but not always the issue, I am glad they are helping storage companies with initiatives like the Long Duration Energy Storage group and all their lobbying efforts

[pjc50]

This all sounds excellent, but I'm wincing at how many different pieces there are that are either (a) semi-unproven or (b) have a really high capital cost to value ratio. And they all have to work for the business to work.

> H2 electrolyzers

Do you have a platinum-free solution for this?

> small haber-bosch plant

Is this a thing already? Wouldn't this be more directly marketable into the fertilizer industry, which needs fewer of the rest of the pieces?

> is only used as a "joker" a few days per year

This is very bad for capital efficiency, sadly.

[Temporary_31337]

why not rely on the grid those few days in a year? I kind of get self sufficiency is the goal, eventually, but for now sounds cheaper to go gradually?

[clivefx]

My dude, never has this image been more relevant https://datavizblog.files.wordpress.com/2013/05/map-full-siz...