Energy & Climate: The Connection Brief
Summary
Climate and energy are one system, running in a loop. Climate volatility strains the energy system from both ends — raising demand as heat drives cooling load, and disrupting supply as disasters and grid stress mount. The transition that would relieve that strain has started: in 2025, renewables overtook coal for the first time in the modern power system. Yet it has stalled at the margin, where clean projects wait in interconnection queues, policy has turned against wind and solar, and the skilled workforce to build it is aging out.
So the gap gets filled with gas. And in 2026, a chokepoint war in the Strait of Hormuz repriced that fossil bet in real time — oil and globally traded gas alike. The bill lands where it always does: on balance sheets, through insurers retreating from climate-exposed markets and assets stranded by the transition.
This brief traces nine connections across that loop, each sourced to primary 2024–2026 data. One question runs through all of them: who carries the risk, and where does it travel?
The Three Hards
Every connection in this series is classified by the type of difficulty it represents — the lens through which the friction becomes visible.
What's difficult to understand. The data exists; the challenge is translating it into decision-relevant insight.
What requires multiple parties to align. The solution is known; the challenge is getting institutions, markets, and communities to move together.
What requires courage to act on despite uncertainty. The evidence points in a direction; the challenge is committing capital before the outcome is guaranteed.
The Atmosphere's Invoice
The climate sends an invoice — and in 2024 it ran to $182.7 billion across 27 separate billion-dollar weather and climate disasters, the fourth-costliest year in the record.1 Since 1980 the tally reaches 403 such events and more than $2.9 trillion.2
The number that matters is the slope. Across 1980–2023 the country averaged roughly nine billion-dollar disasters a year. Over 2020–2024 it averaged twenty-three.2 The baseline more than doubled inside a single generation. (NOAA retired this dataset after 2024; Climate Central now maintains it.)
A doubling in event frequency is a structural shift in the baseline — the new ground that every energy asset, every grid, and every insurance program now operates on. When the loss curve steepens, the question moves from "did we plan for a bad year?" to "did we plan for the new normal?"
Taxpayers and disaster-relief funds in the first instance — and, increasingly, the insurance market that has to price the next event. The invoice does not disappear. It travels to whoever underwrote the exposure.
Heat Is a Demand Driver
U.S. electricity demand was flat for two decades. That era is over — and heat is part of why. On July 28–29, 2025, U.S. peak demand set back-to-back records, topping out at 759,180 MW; the EIA credits hot-weather cooling demand on top of a rising baseline.3 The June 2024 heat wave had already pushed PJM 19% above its prior-June peak.4
NERC now calls extreme heat the leading summer reliability risk: summer peak demand jumped more than 10 GW in a single year — double the prior increase — and six regions sit at elevated risk of shortfall under a heat wave.5 The cushions are thin. ISO New England enters summer with just a 4% reserve margin under extreme conditions, and MISO's margin turns negative.5
Here is the loop in miniature. A hotter climate raises electricity demand at the exact hours the grid is most stressed, and the fastest way to meet that demand still burns fuel that warms the climate further. Heat now hits the grid from both sides: it derates lines and plants on the supply side, and it drives cooling load on the demand side. The climate is becoming its own accelerant on the energy system.
Grid operators and ratepayers — during the precise hours when electricity matters most. A reliability margin that holds in a normal summer can vanish in a wide-area heat dome. When it does, the cost reaches households and businesses twice over: directly, when outages strike during dangerous heat — spoiled food, shuttered businesses, and health emergencies once air conditioning fails — and indirectly, through the price spikes when power runs short and the costly stand-by plants utilities fire up only at peak — both passed straight through to monthly bills.
Renewables Overtake Coal
For most of 2025, the news was good — genuinely good. Renewables generated 33.8% of the world's electricity, edging past coal at 33.0% to lead the global power mix for the first time in more than a century.6 Solar did the heavy lifting, adding a record 636 TWh (up 30%) and meeting three-quarters of the year's demand growth; for the first time outside a recession, global fossil-fuel generation actually fell — by 38 TWh.6
The capital was following. Global energy investment reached $3.3 trillion in 2025, with clean energy drawing roughly twice the dollars going to oil, gas, and coal.7 Coal demand was set to plateau through 2027.8 And batteries — the technology that makes renewables dispatchable — hit a record-low $108/kWh, down 93% in real terms since 2010.9
This was the good news, and it was real: the emissions curve bent, and the market bent it. But a global average hides a local truth. The milestone says the fleet is getting cleaner. It says nothing about whether the next megawatt will be clean — and that is where the story turns.
Fossil fuels, incumbents, and the financiers. As the crossover accelerates, coal and gas assets face shrinking market share and a steeper path to stranding (Connection 09). The risk here belongs to whoever is still long the old system.
When the Grid Outgrows Its Rulebook
On 28 April 2025, continental Spain and Portugal lost power in the most severe blackout on the European grid in over two decades, as the Iberian Peninsula separated from the rest of the European network.10 ENTSO-E's 49-expert panel found no single cause. It traced a chain of voltage and reactive-power control failures: the system met a sudden voltage rise it could not absorb, and a cascade of overvoltage disconnections brought the grid down.10
The root cause tree can be found in the 470+ page report.10
The decisive finding is precise: the failure was voltage control, and even much higher system inertia would not have prevented the collapse.10 What mattered was the rulebook, because the generation mix had outgrown the operating rules written for a different fleet.
This is the transition's coordination problem made visible. The generation mix changed faster than the rules that govern voltage and reactive power. The fix points at the operating manual: it has to be rewritten at the same speed the grid is rebuilt — and that work is as much institutional as technical.
Everyone downstream of a grid changing faster than its control standards — system operators, regulators, and the households and businesses a continental blackout reaches in seconds. Coordination risk has no deductible.
Stuck in the Queue
At the end of 2024, roughly 1,400 GW of generation and 890 GW of storage — overwhelmingly solar and batteries — sat in U.S. interconnection queues waiting for permission to connect.11 Of the capacity that requested interconnection from 2000–2019, only about 13% had reached commercial operation by the end of 2024 — 77% was withdrawn, and 10% was still waiting.11
Then the floor shifted. The 2025 milestone marked momentum at its peak — and peaks can reverse. By mid-2025 the federal government had withdrawn offshore-wind leasing, and the One Big Beautiful Bill Act (July 2025) phased out the wind and solar tax credits that had anchored a decade of investment.12 Litigation testimony put roughly 57 GW of capacity cancelled or at material risk.13 The transition got this far on cost and engineering; policy now decides how much further it goes.
The hard part of the transition has moved downstream of the technology. Panels and batteries keep getting cheaper; the bottleneck now sits in the queue, the permit, and the policy — a coordination problem among utilities, regulators, and governments. Every clean megawatt held in line is a megawatt the grid ends up meeting some other way. And if the clean power is stuck in a permitting queue, what gets burned to meet the energy demand today?
The climate carries it first — every delayed clean project extends reliance on the fossil fallback, and every year of delay locks in more emissions. Developers carry it next: capital sits idle in the queue, interconnection costs can strand a project before it is built, and a policy reversal can erase the credit a financing model was built on. When a clean project stalls, the risk does not vanish — it relocates to whoever is left meeting demand the slow way.
Supply Hands
Every megawatt of the transition is built by hand — and the hands are running short. The IEA finds about 60% of energy companies report labor shortages and estimates the sector needs 40% more qualified entrants by 2030 just to keep the gap from widening; electricians and power-line workers top the constrained list.14
In the U.S., employers are already feeling it: across electric power generation, 88% report at least some difficulty hiring, and 59% of grid utilities say line workers — the crews that build and maintain the grid — are the hardest to fill.15
Supply chain begins with supply hands. The queue (Connection 05) assumes an approved project gets built; the workforce data says the crew may not be there. An aging trade, too few apprentices, and simultaneous demand from grid, factories, and data centers collide on the same job sites. A delayed build means a longer lean on fossil fuels — which makes the labor gap a climate variable.
Project developers and their financiers. Capital is impatient; trained labor is finite. The risk falls on whoever is paying interest while waiting for the electricians to show up.
The Strait of Hormuz — A Chokepoint Hits Oil and Gas
The gas bridge of Connections 05–06 rested on an assumption: that gas is the fast, firm, reliable fallback. Because the clean capacity sat stuck in the queue and short on labor, the grid leaned on that bridge as if it were permanent. And a bridge built on globally traded fuel is only as secure as its narrowest chokepoint — here, a strait barely 30 miles wide. In 2024, about 20% of the world's oil — 20 million barrels a day — moved through the Strait of Hormuz, alongside about 20% of global LNG, most of it Qatari.16, 17
Since 28 February 2026, the strait has been effectively closed, following military action and a U.S. blockade of Iranian oil shipments. The EIA reports production shut-ins averaging 10.5 million barrels a day in April and peaking near 10.8 million in May as storage filled, with Brent crude averaging $117 in April and spiking to $138.18 The IEA called it the largest supply disruption in the history of the oil market.19
Here is the connection the gas bet missed: the chokepoint hits gas too. Qatar declared force majeure on LNG; European gas prices jumped 35% and Asian LNG 51%.20 U.S. Henry Hub stayed relatively insulated — but only because U.S. export terminals already run near capacity, a temporary buffer that narrows as export capacity grows.20
The gas bridge was supposed to be the safe, fast option. A chokepoint war shows it is neither immune nor decoupled: a fifth of the world's LNG runs through the same strait as the oil, and globally traded gas reprices the moment that strait closes. The "safe" fuel inherits the very geopolitical risk it was meant to sidestep. This is concentration risk, repriced in real time.
Anyone who bet the bridge was safe — and the broader economy that absorbs the oil-price shock as imported inflation. The deeper exposure belongs to a fossil-dependent system in which a single waterway can reprice energy for everyone.
The Property Insurance Retreat
Every signal above eventually arrives here, on a balance sheet. Global insured catastrophe losses ran about $137–141 billion in 2024 — the fifth straight year above $100 billion — and 2025 made it six.21, 22, 24 The January 2025 Los Angeles wildfires were the costliest wildfire event on record, near $40 billion insured.23 The tail runs larger still: Swiss Re estimates a single peak year of hurricanes and earthquakes could drive global insured losses to $300 billion.25
The retreat shows clearest in California. The insurer of last resort — the FAIR Plan — saw exposure more than triple since 2022, reaching $750 billion by March 2026, with policies in force climbing to 684,000+ (from about 271,000+ in 2022) as admitted carriers pulled back.26 The LA fires forced the FAIR Plan to levy a roughly $1 billion assessment on member insurers to keep paying claims.27 The state's response, the Sustainable Insurance Strategy, modernizes rate rules that had largely stood since Proposition 103 in 1988: insurers may now use forward-looking catastrophe models in rate-setting, and in turn must write coverage for at least 85% of properties in distressed areas.28
This is the hard-money proof point. Models invite debate; capital settles it. When admitted carriers retreat from an entire state and the insurer of last resort levies a billion-dollar assessment to keep paying claims, the climate signal has hardened into a realized financial fact. Insurance is the market that converts forecast into price — and it has begun repricing whole geographies.
Member insurers, then every policyholder in the state. A FAIR Plan assessment flows back to the carriers, and from there into statewide premiums. The cost of the next fire is socialized across everyone who holds a policy.
The Price of Carbon and Stranded Assets
The reckoning has two faces. Connection 08 showed insurers pricing the physical risk; here, carbon markets price the transition risk — and that price is already live. Europe's carbon market raised €38.8 billion in 2024, and on 1 January 2026 its carbon border tariff (CBAM) began charging importers of steel, cement, aluminum, fertilizer, electricity, and hydrogen for embedded emissions.29, 30 Carbon now has a price that crosses borders.
For fossil owners, today's geopolitics seems to point the other way — a chokepoint war and a fossil-friendly policy turn have made gas plants look like cash machines. But the forward risk is two-sided, and the owner cannot hedge both:
And the timeline is the trap: a gas plant approved in 2026 to cover a summer cooling spike (Connection 02) runs for some 25 years, to around 2050 — and over a life that long, one of these two reckonings is certain to reach it.
This is where the brief's two halves meet. The fossil fallback is a multi-decade bet — and it loses both ways. Decarbonize, and the asset strands. Stay high-carbon, and the Connection 08 bill climbs toward a sharper correction later. No version of this bet is cost-free. The only questions left: which reckoning lands first, and who is holding the asset when it does.
Fossil-asset owners — and the ratepayers and public balance sheets behind them. A plant stranded before the end of its life is a write-down someone funds. The question is whether that someone priced it in when the concrete was poured.
What This Research Reveals
Nine connections, one loop. Climate strains the energy system from both ends — heat raises demand, while disasters, grid stress, and a shortage of skilled hands strain supply. The transition that would answer it is real (renewables passed coal) yet stalled short of completion (the queue, the policy reversal, the missing workforce). So the gap fills with gas — and a chokepoint war reprices that fossil bet, oil and gas together. The bill for all of it lands on the balance sheet: the fuel shock, the physical losses driving insurers out of whole markets, and the carbon now being priced into the assets still running — with stranding the risk that comes later.
Then the loop turns again. A hotter climate keeps raising demand, and every megawatt the transition cannot build clean gets built another way — feeding the warming that started the cycle. Its direction is set this decade — by what gets built, and by who will carry the risk of building it clean.
Translate the loop into the next capital decision. Read insurance as the early signal. Insurers price climate risk before capital markets do, so where carriers raise rates, cut limits, or leave a region, the risk has already moved onto the balance sheet — held by the owner now, whether they meant to retain it or not. Map where coverage is thinning, quantify what is being self-insured by default, and carry that cost in valuations and reserves before a loss forces the issue. A market insurers are leaving is a market repricing in real time.
The Full Triad — AI · Energy · Climate
This is one system, and one risk question runs through every connection: who carries the risk, and where does it travel? The capital decisions being made now — in AI infrastructure, energy procurement, grid investment, and insurance architecture — will determine whether this system bends toward a livable climate or a more fragile one.
That is the question Clean Power Whisperer exists to help answer.
Sources
- NOAA Climate.gov — "2024: An active year of U.S. billion-dollar weather and climate disasters" (Jan 2025).
- NOAA NCEI — "U.S. Billion-Dollar Weather and Climate Disasters," 1980–2024
- EIA, Today in Energy — "U.S. electricity peak demand set new records twice in July" (Aug 5, 2025)
- EIA, Today in Energy — "June heat wave increased electricity demand in the eastern and midwestern United States" (Jul 1, 2024)
- NERC — "2025 Summer Reliability Assessment" (May 2025).
- Ember — "Global Electricity Review 2026" (Apr 8, 2026).
- IEA — "Global energy investment set to rise to $3.3 trillion in 2025" (Jun 5, 2025)
- IEA — "Global coal demand is set to plateau through 2027" (Coal 2025, Dec 2025).
- BloombergNEF — "New Record Lows for Battery Prices" (Dec 19, 2025).
- ENTSO-E — "28 April 2025 Iberian Blackout" (March 2026)
- Lawrence Berkeley National Laboratory — "Queued Up: 2025 Edition" (as of end-2024).
- U.S. policy reversal on wind & solar, 2025: Federal Register — "Temporary Withdrawal of All Areas on the Outer Continental Shelf from Offshore Wind Leasing" (Jan 2025); One Big Beautiful Bill Act, P.L. 119-21 (signed Jul 4, 2025) — terminates the §45Y / §48E clean-electricity credits for wind and solar placed in service after Dec 31, 2027.
- Crowell & Moring — "Federal Court Blocks Trump Administration Policies Restricting Wind and Solar Permitting" (Apr 22, 2026)
- IEA — "World Energy Employment 2025" (Dec 2025).
- U.S. DOE — "U.S. Energy & Employment Report 2025" (Aug 28, 2025)
- EIA, Today in Energy — "Amid regional conflict, the Strait of Hormuz remains critical oil chokepoint" (Jun 16, 2025)
- EIA, Today in Energy — "About one-fifth of global liquefied natural gas trade flows through the Strait of Hormuz" (Jun 24, 2025)
- EIA — "Short-Term Energy Outlook" (May 2026)
- IEA — "Oil Market Report" (April 2026)
- EIA, Today in Energy — "International LNG prices rise amid Strait of Hormuz closure" (Apr 28, 2026)
- Swiss Re Institute — "sigma 1/2025: Natural catastrophes — insured losses on trend to USD 145 billion" (2025).
- Munich Re — "Climate change is showing its claws" (2024 NatCat figures, Jan 2025).
- Munich Re — "Climate change presses on…" (2025 NatCat figures; Jan 2025 LA wildfires, 2026).
- Swiss Re — "2025 marks sixth year insured natural catastrophe losses exceed USD 100 billion" (2025/2026).
- Swiss Re — "Hurricanes and earthquakes could lead to global insured losses of USD 300 billion in a peak year" (2025).
- California FAIR Plan — "Key Statistics & Data" (2024–2025)
- CA Dept. of Insurance — "Commissioner Lara takes action to ensure FAIR Plan can continue paying consumer claims" (2025)
- CA Dept. of Insurance — "Sustainable Insurance Strategy" (2025)
- European Commission — "2025 Carbon Market Report: EU ETS lowers power sector emissions and expands to maritime transport" (Dec 3, 2025).
- European Commission — "Carbon Border Adjustment Mechanism (CBAM)" (updated May 27, 2026).
- Nature Sustainability — "Ownership of power plants stranded by climate mitigation" (2025)