Energy Market Briefing

Friday 21 August 2026 · Generated 10:00 BST · Past 24 hours

Washington's Iran squeeze tightened hard overnight, with the Treasury vowing unprecedented sanctions and the Navy's blockade actively redirecting and boarding ships, and UK gas and power jumped across the whole curve in response.

UK Gas▲

NBP Win-26 jumped over 3% on the day

UK Power▲

Power Win-26 up over 2%, tracking gas higher

EU Storage▲

61.8% full, 18.3pp under the 5yr norm

Market bias

Firm, strong upside riskSofter · Firmer

Escalating US pressure on Iran and a tightening naval blockade are driving the curve higher across every season.

UK gas Win-26

5.55p/kWh

+3.02% day-on-day

UK power Win-26

13.34p/kWh

+2.22% day-on-day

EU gas storage

61.8% full

18.3pp below 5yr norm

TTF prompt

66.27EUR/MWh

+1.49% on the day

Brent crude

93.24$/bbl

-0.58% on the day, still near highs

Today's headlines

1 · GEOPOLITICS
Washington raised the pressure on Iran again, with the Treasury vowing unprecedented sanctions and the Navy tightening its blockade of Iranian shipping.
Treasury doubles down
US Treasury Secretary Scott Bessent said Washington would impose the toughest sanctions in its history to collapse the Iranian government, urging other nations including China to join the effort. China dismissed the push as economic warfare that will not resolve the underlying disputes.
Blockade tightens
US Central Command said it has redirected 67 merchant vessels, disabled three and boarded two more while enforcing the naval blockade of Iranian ports. Vice President JD Vance called it a new phase of economic pressure that Washington intends to keep building.
Iran pushes back
Iran's foreign ministry called the proposed measures illegal and inhumane, while Tehran's foreign minister dismissed the sanctions threat as a distraction from mounting US debt. Neither side has signalled any move back toward talks.
2 · OIL & SUPPLY
Hormuz crossings roughly halved in a day, keeping Brent elevated even as prices eased back slightly.
Hormuz traffic thins
Crossings through the Strait of Hormuz fell to around seven vessels on Thursday, roughly half the previous day's total, with tracking data showing the waterway still nowhere near its pre-war traffic of over a hundred ships a day.
Brent eases from highs
Brent crude traded around $93.24 a barrel, down 0.58% on the day but still close to its recent peak after a strong run higher this week on the tightening Hormuz standoff.
Curve stays firm
The forward curve remains elevated out to the end of the decade, with front seasons carrying the bulk of the risk premium for as long as the strait stays effectively closed to commercial shipping.
3 · SUPPLY SECURITY
Russia is widening its campaign against Ukraine's energy system, targeting heat and water supplies ahead of the coming winter.
Tactics shift for winter
Ukrainian officials say Russian strikes are increasingly aimed at heating and water infrastructure rather than power generation alone, a shift seen as an attempt to complicate preparations for the 2026-27 heating season.
Naftogaz under pressure
State gas producer Naftogaz has been hit roughly 300 times since the start of the year, with recent waves of strikes forcing some wells offline and damaging production and drilling sites.
Independence day risk
Ukrainian intelligence has warned of a larger strike campaign timed around independence day on 24 August, adding a near-term risk premium to the supply security picture.

Forward curve & seasonal movesi

UK powerUK gas NBPmonthly forward, p/kWh · market close on 20 August 2026

20 Aug 2026

Season	Power	Δ	Gas	Δ
Win-26	13.34	+2.22%	5.55	+3.02%
Sum-27	8.88	+2.88%	3.59	+4.54%
Win-27	8.99	+1.99%	3.51	+3.22%
Sum-28	6.66	+0.97%	2.48	+1.74%
Win-28	7.39	+0.89%	2.71	+1.03%
Sum-29	6.37	+0.76%	2.12	-0.88%

Seasonal contracts in p/kWh, change is day on day, as of market close on 20 August 2026.

UK generation mixi

Interconnectors6.25 GW20.8%

Solar6.00 GW20.0%

Gas (CCGT + OCGT)5.72 GW19.1%

Nuclear4.41 GW14.7%

Wind4.32 GW14.4%

Biomass1.70 GW5.7%

Hydro + pumped0.28 GW0.9%

Other1.35 GW4.5%

As of 21 August 2026, 09:40 BST. Tap a fuel or a slice to isolate it, tap again to reset.

EU gas storagei

Now

61.8%

5yr norm

80.1%

-18.3pp vs 5yr normDashed line: 90% winter target

Winter 2026/27 target is 90% of capacity by 1 December, with Commission flexibility down to 80%. As of 19 August 2026.

Other commoditiesi

TTF▲+3.77%JKM▲+2.38%Brent▲+2.36%WTI▲+2.33%UK carbon▼-0.12%EU carbon▲+0.90%FTSE 100▲+0.04%GBPUSD▲+0.19%GBPEUR▲+0.22%Gold▼-0.07%TTF▲+3.77%JKM▲+2.38%Brent▲+2.36%WTI▲+2.33%UK carbon▼-0.12%EU carbon▲+0.90%FTSE 100▲+0.04%GBPUSD▲+0.19%GBPEUR▲+0.22%Gold▼-0.07%

Global gasiTTF▲+3.77%JKM▲+2.38%

OiliBrent▲+2.36%WTI▲+2.33%

CarboniUK carbon▼-0.12%EU carbon▲+0.90%

FTSE 100i▲+0.04%

ForexiGBPUSD▲+0.19%GBPEUR▲+0.22%

Goldi▼-0.07%

Past 6 months of daily closes. As of 20 August 2026. Change shown is the latest close against the previous close.