Field notes The Energy Transition for the Rest of Us

Steel For Fuel N° 013 of 56 27 Feb 2024

The electricity gauntlet

by Andy Lubershane, Partner and Head of Research, Energy Impact Partners

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 happens to the electric power system when demand growth returns at the same moment that firm capacity becomes harder to add?

The answer

Both walls are already closing, and there is no worked-out route between them. Lubershane’s own conclusion is blunt and narrow: the sector will not get through the next five to ten years without building more natural gas generation, so the useful question becomes how to build gas that keeps its value as it is asked to run less and less.

03The argument

The piece is a framework rather than a forecast, and he says so: the gauntlet started as his read on the mood among power-industry operators rather than as analysis, and firmed up over six months of conversations with utility leaders. Its two walls are demand and firm supply. On the demand side he is careful not to hand the whole story to data centers. They are the loudest of three drivers, alongside new industrial construction encouraged by recent federal industrial-policy bills and the broad arrival of electrification, which he says is finally happening and which he describes as an army stretching as far as the eye can see. What makes data centers suddenly visible is a trick that has run out. For a decade, demand for computing grew enormously while data center electricity use barely moved, because workloads migrated out of inefficient server closets into hyperscale facilities that kept getting more efficient. That migration is nearly finished, efficiency gains inside hyperscale facilities have hit diminishing returns, and generative AI arrived on top of both.

The other wall is that adding firm capacity has become hard. Coal retirements mean operators start the game from behind, and some retirement dates are already slipping. Renewables, he writes, have entered a rocky adolescence: higher interest rates, profitability concerns, and above all transmission congestion and interconnection delay. Transmission is what he calls probably the critical bottleneck to the timely deployment of affordable renewables, and whether enough of it can be built is in his view the first big question of the energy transition. Storage helps, and he is bullish on multi-day storage in particular, but he does not expect grid operators to bet gigawatts on any form of storage within the next few years, and he leans on a distinction that does real work here: storage supplies capacity but not energy, and the grid currently needs both. Aside from pulling coal plants back from the edge of retirement, the most sure-fire way to add gigawatts of firm capacity meant to run at high utilization is new gas generation.

Gas is where the argument turns on itself. He states the need for more of it bluntly and then immediately concedes the problem: burning unabated methane at scale is incompatible with long-term carbon goals, and with a proposed federal rule he doubts will be implemented as written but says planners cannot ignore. His resolution is a change of word. Gas should stop being described as a bridge to an all-renewable future and be treated instead as a backstop, with a standing obligation on the industry to drive its emissions down in exchange. He sets out three ways to do that. Hydrogen readiness is cheap at the turbine and expensive everywhere else, because it also means building zero-carbon hydrogen production at power-plant scale. Carbon capture depends on both geology and a willing regulator, has no turbine packages marketed for it the way hydrogen does, carries the memory of early project failures, and needs sequestration sites started years before anyone decides to invest. The third is distributed gas at the grid edge, and it is the one he thinks deserves more attention. Its logic is about asset value rather than emissions: planners should assume new gas will be dispatched less and less over time, and an asset headed for low utilization holds its worth best where it can also sell resilience, which means a microgrid configuration able to island a customer when the grid goes down.

He closes without a route through. The decarbonization plan his firm had been working from appears only as a figure, so this note cannot say what its three steps were; his point about it is that the gauntlet seriously complicates the first two, and that this should concern anyone who cares about energy and climate. The piece is a warning with a partial prescription attached, and it ends by asking readers to get creative rather than by claiming the problem is solved.

04What you need to know first

Capacity versus energy
His own gloss: energy is raw joules, and capacity is joules specifically when you need them, for as long as you need them. Firm capacity is the portion a grid operator can count on at the moment of peak demand.
Capacity factor
How much of its maximum possible output a plant actually delivers over a year. A plant called on only during rare shortfalls has a low one.
Microgrid and islanding
A local cluster of generation and consumers that normally runs as part of the grid but can disconnect and operate on its own when the grid fails.

05Details worth keeping

  • The framing predates the post: he and his partner Shayle made a podcast about it, and he spent roughly six months testing it on North American utility leaders before writing this.
  • Concrete symptoms he offers include Dominion Energy telling data center developers it lacks transmission capacity in Northern Virginia until 2026, and Amazon planning to power three Oregon data centers with on-site fuel cells running on natural gas.
  • Two utilities are cited slowing coal retirements. Evergy is keeping a plant running longer partly because of a large battery factory under construction in its territory, and FirstEnergy dropped a 2030 carbon-reduction goal while keeping two coal plants online, citing resource adequacy and state policy. It retained its 2050 net-zero commitment.
  • On industrial policy he cites Noah Smith on the soft obstacles the bills left unaddressed and Ezra Klein’s phrase about attaching too many requirements to public projects, and notes that construction spending has risen without manufacturing output following yet.
  • An unnamed utility friend supplies the line that gas is the closest thing to an easy button in a world without easy buttons.
  • Hydrogen developers are lining up at grid operators’ doors for gigawatts of clean supply, he says, with varying degrees of credibility.
  • The three-step decarbonization plan and the reliability risk map are both published as images, so the note cannot reproduce what either showed beyond what the prose says.

06Claims worth citing

All figures as stated on 2024-02-27. Load forecasts, retirement dates and the status of the proposed emissions rule are the fastest-moving of these.

  • Over the past decade, demand for data center computing grew nearly tenfold while data center energy use grew about 10%. International Energy Agency, cited by Lubershane
  • A 2011 newspaper report put a single Google query at about a third of a watt-hour, and researchers put a single ChatGPT query at about three watt-hours, so a similar task costs more than ten times the energy. He adds that the Google figure is very likely much lower now, which makes the multiple a loose comparison rather than a measured one. Lubershane
  • Individual data centers used to be rated in tens of megawatts and are now often rated in hundreds; he says he has heard tales of gigawatt-scale projects in the works. Lubershane
  • Making 1 kWh of battery cells takes about 50 kWh of electricity, so the roughly 1 TWh of annual US cell production that has been credibly announced implies up to 50 TWh of added demand, over 1% of total annual US electricity supply. Lubershane
  • Only about 20% of energy is delivered to consumers as electricity today. Lubershane
  • Light-duty electric vehicles have passed 15% of new vehicle sales globally, and the US, which he calls a laggard market, is approaching 10% penetration on a base he does not specify; US residential heat pumps overtook gas heating systems for the first time in 2022 and gained further share in 2023. Lubershane
  • Southern Company’s October 2023 resource plan projected 6.6 GW of load growth through 2030, 6.2 GW more than its forecast a year earlier, and its leadership testified that nothing in the company’s or the state’s history would have predicted growth of that size or speed. Southern Company testimony, cited by Lubershane
  • Duke Energy’s January plan projects eight times the load growth it anticipated two years earlier, which it calls unprecedented in both size and speed. Duke Energy, cited by Lubershane
  • A December reliability assessment found more than half the continent at elevated or high risk of capacity shortfalls, up substantially on the previous study. North American Electric Reliability Corporation, cited by Lubershane
  • About 50 GW of coal generation is scheduled to retire by the end of the decade, roughly 5% of US peak load. Lubershane
  • New US transmission lines take about ten years to develop on average, and lines over 500 miles take more than 15. Lubershane
  • The proposed federal rule would require gas turbines from 2032 either to burn a hydrogen blend or to capture a substantial share of their emissions. Lubershane, describing the proposal
  • A federal database tracked about 6 GW of microgrid capacity across 770 projects as of 31 October 2023. US Department of Energy database, from a figure caption

07Where it’s contested

Nobody argues back; this is one person setting out a frame. What the post does carry is a set of deliberate confidence markers, and one large assertion that goes undefended.

  • He rates his own framing honestly. He says the gauntlet was more a vibe than rigorous analysis when he first reached for it, and presents it as a lens rather than a result, while saying he is now thoroughly convinced of its importance.
  • The gas conclusion is asserted, not shown. The claim that the next five to ten years cannot be navigated without more gas is the load-bearing step in the prescription, and no quantity, scenario or comparison is offered for it. Nothing in the post weighs shifting or shaping demand against building more supply.
  • He hedges the regulation both ways. He doubts the proposed emissions rule will be implemented as written, while saying its underlying tension is legitimate and that planners cannot ignore it.
  • Storage is praised and set aside. He calls himself extremely bullish on multi-day storage and in the same passage says he does not see operators betting gigawatts on any storage in the next few years.
  • The industrial-policy evidence is mixed by his own account. Construction investment in US manufacturing has more than doubled, but he notes that real manufacturing output has not followed yet, and that permitting, labor and process obstacles went unaddressed.
  • He has a stake in parts of the answer. The electrification examples and three of the strategy recommendations are his firm’s portfolio companies, each labelled as such, and one passage recommends contacting one of them directly.

Cite as: “The electricity gauntlet,” The Energy Transition for the Rest of Us, note on Steel For Fuel, February 27, 2024. CC BY 4.0. View the Markdown