Field notes The Energy Transition for the Rest of Us

Catalyst N° 061 of 125 1 May 2025

Catalyst Live at SF Climate Week

with Nick Chaset, chief executive, Octopus Energy US; Mike Schroepfer, founder and partner, Gigascale Capital (former chief technology officer of Meta)

In this note
  1. 01The question
  2. 02The answer
  3. 03The argument
  4. 04What you need to know first
  5. 05Details worth keeping
  6. 06Claims worth citing
  7. 07Where it’s contested

The question

What is climate tech over-hyping and under-hyping right now, and why does Kann think consumer products account for so many of its few big wins?

The answer

The episode does not reach a single conclusion, and it is not built to. It is a live recording with one open panel segment followed by two games, a hype audit across five topics and three awards, and the two guests split on most items. One test does recur: somebody has to want the thing for a reason that is not the climate benefit. On that basis both call artificial intelligence applied to climate over-hyped and both say the climate pitch should not lead. Elsewhere they split along a consistent line, with Chaset bounded by what regulators, permitting and capital markets will allow and Schroepfer bounded by what well-funded engineers can build around.

03The argument

The opening segment sets up everything that follows. Kann’s premise, which is his own and offered without data, is that consumer companies account for a disproportionate share of climate tech’s rare generational outcomes. Schroepfer answers that a consumer product has to clear two separate bars, not one. It has to be a product people love, and the problem it solves has to be big enough to carry a business. He offers his own counterexample rather than a hypothetical: Meta’s Portal video device cleared the first bar and missed the second, because people who bought it adored it and a dedicated video-chat device was never a large enough market. Chaset’s version is grounded in electricity specifically. Energy is invisible and nobody interacts with it, so the products that have worked either delivered something tangible, an induction cooktop that boils pasta water in three minutes instead of seven, a car that is simply better than the one it replaced, or delivered no experience at all and pure economics instead. Kann names those two archetypes cleanly, and points out that residential solar belongs to the second: what unlocked it was the lease and power purchase agreement, which produced savings on day one and no consumer experience whatsoever.

From there both guests reject the idea of leading with the climate benefit, and Schroepfer goes further than the question asked. He argues the category label itself confuses the analysis, because at the end of it somebody is paying you, and they pay because the thing saves them money or makes their life easier. Chaset’s field answer is the same shape: selling residential solar and storage in the East Bay, the pitch was resilience first, for households losing power fifteen times a year and a fridge full of food with it, then bill savings. Customers who led with wanting to be green were a small minority, happy to have the benefit but not buying for it.

That criterion is what the hype game then runs on, and it is where the two split systematically. Chaset’s over-hyped calls all rest on constraints outside the product. Data center load growth is over-hyped not because the demand is absent but because connection capacity is limited and expanding it runs through utilities that need regulatory authority and rate cases, on timescales designed to be slow; Kann narrows the claim to the buildout rather than the demand and Chaset accepts the narrowing. Carbon removal is over-hyped because it asks consumers with short horizons to pay for a benefit twenty years out, which means governments have to buy it, and governments were pivoting away. Schroepfer’s calls run the other way, on what capable organizations can engineer around. On data centers he insists on saying both: over-hyped in the sense that US demand growth is over-attributed to them when manufacturing and electric vehicles are a large part of it, and under-hyped in the sense that chips are being bought and powered up and well-resourced companies are being extremely creative about finding power. On carbon removal he calls it a pure economics problem, with nature-based routes such as enhanced rock weathering, ocean alkalinity enhancement and biochar getting under $100 a ton and the market opening when they do; he answers Chaset’s demand problem directly, saying consumers will never care but governments will in the long run. Fusion is the exception that proves the pattern rather than breaking it. Both guests call it under-hyped, but Chaset’s agreement arrives wrapped in his own constraints: he doubts the timescale on which these companies can build and deliver, and thinks local communities will take a while to accept that a fusion plant is safe, at least in the United States.

Their fullest convergence is on artificial intelligence, and it is instructive because the reasoning is the same shape as the consumer argument. Both call artificial intelligence applied to climate over-hyped. Schroepfer’s test is to draw one pie chart of where a problem’s value and difficulty actually sit and overlay a second of what AI genuinely solves, and to check whether they overlap. For materials discovery they mostly do not: AI is good at finding a new material and the hard, expensive part is manufacturing it cheaply at scale. He contrasts this with cancer therapeutics, where finding the right molecule is the hard part and scale-up is comparatively straightforward. Chaset’s version is blunter, that AI is not uniquely suited to climate problems, because these are businesses solving ordinary business problems and AI helps exactly to the degree it would help any business doing the same thing. Neither position depends on being sceptical about AI, and Schroepfer says plainly that he is not.

04What you need to know first

Virtual power plant, or load flexibility
Coordinating many small electricity loads and batteries so they behave like one dispatchable resource. Chaset rejects the first term outright, saying ten people will give ten definitions, and argues the useful category is flexibility.
Measurement, reporting and verification
The practice of proving that a ton of carbon claimed as removed was really removed and will stay put. Schroepfer’s case for cheap nature-based removal depends on it being credible over multi-century timeframes, which is how he states it.
The solar lease and power purchase agreement
The third-party ownership model that let a household host panels with no money down and a lower bill from day one. It is Kann’s example of a product that succeeded with no consumer experience at all.
Community choice aggregator
A California arrangement that lets a local public agency buy power on residents’ behalf in a state with no retail choice otherwise. Chaset ran one, Ava Community Energy, before Octopus.

05Details worth keeping

  • The audience votes are worth recording as a read on the room, counted by ear at a sponsored event rather than tallied. Data center load growth: hyped just right won, to Kann’s surprise. Fusion: a strong over-hyped showing and literally nobody choosing just right. Carbon removal: split, with few moderates. Flexibility: a strong under-hyped vote with a single dissenter. AI for climate: over-hyped won.
  • The consumer example both guests keep returning to is Mill, a home composting device that stops a bin smelling. Schroepfer cites its net promoter scores as the kind where owners tell you about it six times.
  • Chaset’s award pick for the most under-appreciated category is electric vehicles, on the grounds that sentiment is in a trough while the products keep getting better and owners recruit their neighbors.
  • Schroepfer’s picks run to the exotic: wave power as the most under-appreciated category, and super-deep geothermal as the craziest idea that might work.
  • On the flexibility question the disagreement is about segment rather than direction. Both like commercial and industrial flexibility. Chaset argues residential is under-hyped because much of it is free to the customer, with electric vehicle charging the easy case and thermostats the hard one because they ask for discomfort. Schroepfer argues residential demand response is over-hyped because consumers are hard to enrol and the market is fragmented, though he allows that vehicle charging is the one place he is optimistic since you can integrate at the car.
  • Kann’s aside on geoengineering is the most uncomfortable point in the episode and goes unresolved: if carbon removal has to run to gigatons, the equivalent cooling could be bought far more cheaply by geoengineering instead, which turns the question into whether governments act on removal before the cheaper option becomes tempting.
  • Chaset’s craziest-idea pick is a company he calls Water, which mounts two Nvidia graphics processors on a domestic water heater and heats the water with the waste heat, which is claimed to pay for the hardware outright. Chaset’s interest is as a retailer who could offer flat-rate electricity and split the compute revenue. Kann calls it a bitcoin-mining water heater and Chaset does not disagree, only noting the workload need not be bitcoin.

06Claims worth citing

All figures as stated on 2025-05-01, recorded live at San Francisco Climate Week the week before. Several are offered conversationally in a game format rather than as prepared analysis, and the guests are not always asked for a source.

  • About 50% of Octopus customers who own an electric vehicle have signed up over the past 18 months to let Octopus manage when the car charges, which Chaset puts at 250,000 to 300,000 vehicles. He runs the US business while Octopus’s main operation is in the United Kingdom, and he does not say which the figure covers. Chaset
  • Roughly one gigawatt of peak load in Texas is attributable to pool pumps that do not need to run during peak periods. Chaset
  • Carbon removal becomes affordable below about $100 a ton and the market then opens up; $300 to $500 a ton is beyond what buyers can pay. Schroepfer
  • Geoengineering would cost about $10 billion a year to lock in current temperatures. Kann first describes geoengineering as perhaps a thousandth the cost of carbon removal, then works the comparison at roughly $100 billion a year for ten gigatons at $100 a ton, which is an order of magnitude rather than three. The looser figure and the worked one are not reconciled. Schroepfer for the $10 billion; Kann for the comparison
  • Fusion is worth backing at maybe a 10% chance of working, because the payoff if it does is transformational. Chaset offers the 10% as a framing rather than an estimate he defends. Chaset
  • A fusion plant would produce gigawatts from 40 to 100 acres with almost no inputs or outputs and few siting constraints, which is what would make fusion the largest companies ever seen. Schroepfer attaches an explicit conditional on unit economics, which Kann flags. Schroepfer
  • China had just banned the export of six major critical minerals, none of which the United States makes. Schroepfer
  • Norway is at roughly 90% electric vehicles among new sales. Chaset
  • Wave power is concentrated wind energy and probably the largest single untapped energy source on the planet. Schroepfer
  • Residential solar’s historical pitch was around 25% off an electricity bill. Chaset
  • A water heater with two Nvidia graphics processors attached generates roughly ten times as much compute revenue as it costs in electricity. The company name is garbled in the transcript, rendered as Water and as water eater. Chaset, relaying the company
  • US electricity demand growth is over-attributed to data centers, with manufacturing and electric vehicles a large share of it. No split is given. Schroepfer

07Where it’s contested

  • Almost the entire episode is disagreement, by design. Schroepfer remarks partway through that it is spicier than he expected and asks whether they were meant to be oppositional on everything. Kann says he planned for it.
  • Data center load growth. Chaset calls it over-hyped on buildout grounds rather than demand grounds, and accepts Kann’s narrowing to that effect. The transcript labels that one-word acceptance as Schroepfer, but by context it is Chaset. Schroepfer then explicitly disagrees with Chaset and is allowed one answer after taking both.
  • Carbon removal is a clean split with no evidence on either side. Chaset says over-hyped because nobody with a short horizon will pay and governments are retreating. Schroepfer says under-hyped because it is entirely an economics problem and sub-$100 nature-based removal is coming faster than people expect. Neither cites a study or a project.
  • Flexibility. Chaset’s evidence for residential being under-hyped is Octopus’s own enrolment record, which is a claim about what one company with good consumer systems has achieved rather than a general result, and so does not answer Schroepfer’s fragmentation objection. Chaset half-concedes it himself, saying most utilities lack the consumer systems to do what Octopus does.
  • The political environment question. Chaset declines all four offered options and says every capital-intensive category needs certainty that does not currently exist, citing tariff and rate volatility and the loss of the staff who process federal land permits. Schroepfer’s retort is defense procurement as a patient buyer for domestically sourced minerals, batteries and motors, and Chaset’s reply is that he hopes he is right. Kann separately flags that import bans take effect far faster than a new mine or refinery can be built.
  • Kann’s opening premise is his own. The claim that consumer companies account for a disproportionate share of climate tech’s big outcomes is asserted, not sourced, and both guests answer within it rather than testing it.

Cite as: “Catalyst Live at SF Climate Week,” The Energy Transition for the Rest of Us, note on Catalyst with Shayle Kann, May 1, 2025. CC BY 4.0. View the Markdown