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/daily ·25 OCT 2026 ·SUNDAY ·2 MIN READ ·5 STORIES

When the data centres blink

First cracks appear in the AI data-centre energy demand story, Snowy 2.0 hits another cost ceiling, and Washington tightens the solar supply chain screws.

01 / The Day

SUNDAY 25 OCT 2026, ranked

05

The data centre boom is showing signs of fatigue

Wall Street analysts and infrastructure operators are identifying the first concrete signs that the AI data-centre build-out — the primary demand driver behind the US grid storage surge — may be peaking earlier than projected, as hyperscaler capex revisions and softening pre-lease demand accumulate.

  • Three major data-centre REITs saw pre-lease inquiries fall 18% quarter-on-quarter in Q3 2026
  • Nvidia Blackwell Ultra backlog timelines lengthened to 14 months, slowing new facility planning
  • Several 200 MW-plus PJM projects deferred to 2028 despite a packed interconnection queue
Why it mattersData-centre load growth has been the swing factor in US grid storage demand forecasts; a plateau materially changes the medium-term investment case for peaker replacement and storage build-out.
01 heatmap.news↗

Snowy 2.0 cost estimate rises again — now AU$12 billion

Australia 2.2 GW Snowy 2.0 pumped hydro project revised its cost estimate upward for the fourth time since 2019, now sitting at AU$12 billion against an original AU$2 billion budget — a trajectory that systematically reprices long-duration storage against battery alternatives.

  • Latest overrun attributed to tunnelling complexity in elevated granite geology and labour cost escalation
  • Levelised storage cost now above AU$34/kWh, versus below AU$20/kWh for LFP BESS in the same grid zone
  • Three battery projects in the same zone have reached FID at lower all-in costs
Why it mattersEach Snowy revision strengthens the investment case for BESS over pumped hydro — battery costs keep falling while civil megaprojects are structurally exposed to geology and labour risk.
02 pv-magazine.com↗

Tesla Q3 energy storage revenue fell despite near-record deployments

Tesla reported a sequential decline in energy generation and storage revenue in Q3 despite deploying its second-highest quarterly Megapack volume — driven by a contract repricing on a large utility deal and higher warranty accruals on early-generation Megapack 2 units.

  • Energy segment revenue: $3.2B, down 7% from Q2 2026 record; Megapack deployments: 12.8 GWh
  • Tesla flagged warranty accrual as a one-time item; contract repricing terms not disclosed
  • Average selling price per MWh has declined for two consecutive quarters
Why it mattersFalling ASPs even as deployment volume grows signals the utility storage market is pricing Megapack as a commodity, compressing Tesla margin advantage in a segment it pioneered.
03 energy-storage.news↗

Commerce Dept cracks down on solar panel stockpiling ahead of tariff hike

The US Commerce Department issued preliminary findings under Section 232 targeting solar importers who pre-shipped large volumes ahead of the November tariff increase — a ruling that could impose duties on modules already in US warehouses.

  • Investigation covers modules from Southeast Asian suppliers routed through third countries
  • Preliminary finding targets 14 importers holding an estimated 4.2 GW of modules in US warehouses
  • If upheld, backdating of duties would impose costs on projects financed at pre-tariff prices
Why it mattersRetroactive tariff application on already-landed inventory marks a significant escalation in US solar trade enforcement and could delay GW-scale projects currently in construction planning.
04 heatmap.news↗

The permitting bill just collided with Trump offshore wind war

A bipartisan Senate permitting reform bill designed to accelerate clean energy transmission was amended to include a provision limiting offshore wind project approvals — threatening to block the same infrastructure build-out it was drafted to enable.

  • Amendment freezes permitting for offshore wind in federal waters under active executive review
  • Inserted during Senate Energy Committee markup; absent from the House version
  • Offshore wind developers say the freeze would halt at least 8 GW in the pre-construction queue
Why it mattersThe permitting reform effort has been clean energy best legislative shot in two years; a wind carve-out would make it a net negative for the sector it was supposed to help.
05 canarymedia.com↗
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The Daily Archive

/FRI 30 OCTLG and Tesla; Sodium Goes National; BYD Goes European/THU 29 OCTCATL goes big, sodium-ion finds its data centre customer, and China owns electrolysers/WED 28 OCTWednesday: Virtual Gigawatts, Weird Reactors, One Surrender/TUE 27 OCTSolar Tops Nuclear, and the Grid Keeps Moving/MON 26 OCT2026-10-26/SUN 25 OCTWhen the data centres blink/SAT 24 OCTKorea's grid flipped, Google's running a power plant/FRI 23 OCTSonnen Falls, Waratah Scales, BNEF Calls 2026 Peak Storage/THU 22 OCTGigawatts of intent, from Kentucky to the outback/WED 21 OCTWednesday: 400 Wh/kg, Anode-Free Sodium, New York Goes Thermal/TUE 20 OCTSolid-state graduates, seafloor sparks/MON 19 OCTSolar Records, AI Batteries, and a Geothermal First/SUN 18 OCTGrid Foundations/SAT 17 OCTTechnology War Saturday/FRI 16 OCTThe Build vs. the Setback/THU 15 OCTThe Energy Brief — October 15, 2026/WED 14 OCTCells and Gigafactories/TUE 13 OCTTuesday dispatch/MON 12 OCTThe residential battery surge and the storage giant stirring/SUN 11 OCTThe chemistry and the credibility/SAT 10 OCTSaturday Grid