TerraPower: nuclear breakthrough?

TerraPower technology review

TerraPower was founded in Washington State in 2008, employs around 600 people and has received early and consistent backing from Bill Gates. Our TerraPower technology review is based on its patents.

TerraPower describes itself as a nuclear/energy technology company, whose centrepiece technology is a traveling wave reactor for next-generation nuclear energy. 300-1,000MWe reactors were designed. But a 2015 MoU to develop the TWR technology further, with China’s National Nuclear Corporation, was abandoned in 2019 due to technology transfer limitations from the Trump administration. TerraPower has more recently seemed to de-prioritize the traveling wave reactor, instead developing a 345MWe, sodium fast reactor called Natrium, under a partnership with GE-Hitachi.

Our usual patent search returned 143 distinct patents for TerraPower, which is more than other next-gen nuclear, or other pre-revenue companies we have reviewed.

We reviewed TerraPower’s 20 most recent patent filings, to see where it is currently focused. This shows a large library of process enhancements around different energy technologies, mostly fission technologies, and most recently, sodium fast reactors fueled by the circulating flow of radioactive salts. However, given the broad range of patents, it was difficult for us to identify what is the “front-runner” closest to commercialization, and which patents de-risk it or create a moat around it. Full details are in the data-file.

To read more about our TerraPower technology review, please see our article here.


Terrestrial Energy: small modular reactor breakthrough?

Terrestrial Energy technology review

Our Terrestrial Energy technology review focuses on a next-generation nuclear fission company, founded in 2013, based in Ontario, Canada, has c100 employees and is aiming to build a small modular reactor, more specifically, an Integral Molten Salt Reactor.

Game-changer? A plant with 2 x 442MWth and 2 x 195MWe reactors might use 7 hectares of land, get constructed within 4-years, and for less than $1bn per reactor (long-term target is $2,600/kWe), yielding levelized costs of 5c/kWh (company target, we get to 5-7c/kWh for a 5-10% equity IRR in our own models), a CO2 intensity below 0.005 kg/kWh and multiple ways to back-up renewables.

Our patent review shows one of the strongest patent libraries to cross our screens from a pre-revenue company. 80 patents, filed in 25 geographies, lock up 8 core innovations, and give a clear picture for how the reactor achieves high efficiency, high safety and low complexity.

To read more about our Terrestrial Energy technology review. please see our article here.

General Fusion: magnetized fusion breakthrough?

General fusion technology review

General Fusion technology review. General Fusion is developing a magnetized target fusion reactor, to fuse heavy isotopes of hydrogen (deuterium and tritium). It confines 100MºC plasma within a vortex of liquid lithium/lead, then compresses the plasma via hundreds of high-pressure pistons (effectively a modern-day update of the Linus concept).

It is currently working towards building a 70%-scale demonstration plant by 2025 in Oxfordshire; and ultimately hopes to build a $4bn order book by 2027-30, commercializing a 100-200MWe fusion reactor with 5-6.5c/kWh levelized costs of electricity.

Our patent review allows us to de-risk the idea that General Fusion has made genuine, specific and practical innovations towards development of a magnetized target fusion reactor.

The downside of such a candid patent library is that it also highlights the complexity of its ambitions. There are four focus areas which we would highlight in our General Fusion Technology Review.

To read more about General Fusion innovations, please see our see our article here. Fusion remains a theme that could be a game-changer for energy transition. Other companies with good innovations have also crossed our screen. A summary of all this research can be found here.

Japan: nuclear re-start tracker?

Japan nuclear restart by facility

This data-file on  looks through 17 major nuclear plants in Japan with 45GW of operable capacity, covering the key parameters and re-start news on each facility.

In 2010, before the Fukushima crisis, Japan produced 292 TWH of nuclear electricity, which would have required about 40MTpa of LNG imports if it had all been generated by gas instead.

With all its nuclear plants shut down in 2011-12, LNG imports jumped by around 20MTpa, while the remaining shortfall was covered by ramping oil-fired power back upwards by c600kbpd.

In early-2022, we estimate there is 30TWH of upside from ramping up facilities that have partially restarted (saving 5MTpa of LNG). There is another 100TWH of upside from ramping relatively safe but idle facilities (saving 15MTpa of LNG). There is another 100TWH of upside from ramping more controversial facilities, where debates still linger over their integrity amidst the tail-risk of a direct hit from a massive earthquake (another 15MTpa of LNG), although these facilities could in principle re-start temporarily amidst a war or energy crisis.

Total global nuclear generation is around 2,800 TWH pa, so this scenario also presents meaningful uranium upside.

Commonwealth Fusion: nuclear fusion breakthrough?

Commonwealth Fusion Systems spun out of MIT in 2018. The company is based in Massachusetts, has 165 employees and made headlines in November-2021 as it raised $1.8bn in Series B funding, which we think is the largest capital raise of any private fusion company to-date.

CFS aims to be the “fastest and lowest cost path to commercial fusion energy” by creating a commercial nuclear fusion reactor, the SPARC tokamak, which could be around 98% smaller than ITER. A single test magnet using 267km of its HTS tape sustained 20 Tesla magnetic fields in 2021.

Our patent review found CFS to have a high-quality patent library, of specific, intelligible, practical and commercially-minded innovations to densify the magnets that would confine plasma in a Tokamak. Specific details, and minor hesitations are in the data-file.

Nuclear fusion: what are the challenges?

challenges of nuclear fusion

Nuclear fusion could provide a limitless supply of zero-carbon energy from the 2030s onwards. Thus 30 private companies have raised $4bn to progress new ideas. But the goal of this 20-page note is simply to understand the challenges for fusion reactors, especially deuterium-tritium tokamaks. Innovations need to improve EROI, stability, longevity and ultimate costs.

NuScale: small modular reactor breakthrough?

NuScale was founded in 2007 and is developing a small modular nuclear reactor (SMR), measuring 2.7m wide x 20m tall, weighting 700T and producing 250MWth of heat, for 77MWe of power.

Recent progress is strong. It is the first SMR design to win US regulatory approval, unlocking the first plants in 2029-30. In November-2021, plans were also announced to build SMRs in Romania, by 2028, displacing coal power.

NuScale’s patents scored well on our framework, with multiple, clear innovations to improve the safety, compactness and cost-effectiveness of SMRs. This could enable nuclear plants to be constructed for costs below $3,000/kW. Details that impressed us are in the data-file.

Back-stopping renewables: the nuclear option?

Nuclear power can backstop much volatility in renewables-heavy grids, for costs of 15-25c/kWh. This is at least 70% less costly than large batteries or green hydrogen, but could see less wind and solar developed overall. This 13-page note reviews nuclear flexibility and sees nuclear growth accelerating.

Power plants: cold starts and ramp rates?

The purpose of this data-file is to aggregate the ramp-up rates of conventional power generation sources: both as they start up from “cold”, and then as they ramp up (in percent per minute, or MW per minute).

Hydro power and simple cycle gas turbines offer the best short-term performance, ramping immediately and rapidly. Next come combined cycle gas plants, then coal, then nuclear.

Nuclear is nuanced. It might take a day to cold-start up a nuclear plant. But the average facility is 1.1GW. So even a 1% ramp rate is equivalent to adding 10MW per minute, similar in size to the average utility-scale solar plant.

Nuclear power: what role in the energy transition?

Uranium markets could be 50-75M lbs under-supplied by 2030. This deficit is deeper than other commodities in our roadmap to  net zero. Demand is driven by China, constructing reactors for 50-70% less than the West, yielding zero carbon power at 6-8c/kWh. This 18-page note presents the outlook for nuclear in the energy transition and screens uranium  miners.

Copyright: Thunder Said Energy, 2022.