Weekly Energy Market Report: 14th - 18th Sept 2026
SMART ENERGY
Weekly Energy Briefing · UK
Week of 14 Sept – 18 Sept 2026 Latest settlement: 17 September 2026
Weekly review · Week 38 · 14 Sept – 18 Sept 2026
The week in review: gas firmed 3.5%, power firmed 3.2%
A day-by-day recap of how UK gas and electricity moved across the trading week of 14 Sept – 18 Sept 2026, and where that leaves businesses approaching renewal.
Bigger picture
Still high over the six months held
Key risk
Middle east supply shock
The week in review
How the week actually moved
Not one day's snapshot — the whole week, day by day. Each line traces the front-month close from Monday to Friday, so you see the shape
of the week, not just where it ended.
Week of 14 Sept – 18 Sept 2026
Natural gas
The week in 5 days · p/therm
↑ 3.51%
vs last week
eased through the week · -3.8% Mon→Fri
Week avg
197.21 Week low
190.73 Week high
205.19
low 96.52Fri close · today ●205.19 high
Electricity
The week in 5 days · £/MWh
↑ 3.21%
vs last week
eased through the week · -3.7% Mon→Fri
Week avg
152.16 Week low
147.31 Week high
158.00
low 82.28Fri close · today ●158.00 high
What matters
One week rarely changes a renewal decision
The shape:
a week that fell then bounced tells you more than the net number.
Wider view:
the 6-month charts below show whether this week is a blip or a trend.
For buyers:
a good week doesn't reset your deadline — your contract end date still drives urgency.
Biggest move of the weekOct-26
gas ↓ 6.99%
— the largest week-on-week swing across every contract we track.
Why prices moved
Forces pulling prices in both directions
A balanced view is more useful than a single prediction. These are the main influences in the latest report.
Pressure pulling prices lower
Saudi pipeline restoration signalled
By Wednesday, Saudi Arabia confirmed plans to restore roughly half the East-West pipeline capacity within days and achieve full operation within six weeks. Brent crude retreated from $108 to $104–$105.50 per barrel, and the immediate supply panic eased.
Wind swings drive spot volatility
An active Atlantic low-pressure system swept into Northwest Europe mid-week, pushing UK wind to 17 GW and German wind toward 35 GW by the weekend, triggering renewable curtailments. However, high-pressure systems are forecast to settle over the region from Monday 21 to Wednesday 23 September, collapsing wind speeds to 3–4 metres per second and tightening generation balances sharply.
Coal generation outcompetes gas
Clean dark spreads (coal generation margins) remain well above negative clean spark spreads (gas generation margins) across the continent, keeping coal dispatched ahead of gas in the merit order. German clean dark spreads hold above €46/MWh, supporting coal economics.
Risks that could push prices higher
Middle east supply shock
Saudi Arabia's 1,200 km East-West pipeline was shut by drone strikes, taking 4 million barrels per day of bypass capacity offline and leaving the Red Sea Yanbu storage facility with only 5–7 days of export cover. Qatari LNG exports were curtailed under force majeure, and commercial transits through the Strait of Hormuz collapsed to single digits. Brent crude climbed to $107–$108.50 per barrel on Monday and Tuesday.
European storage below seasonal norm
Total EU storage stands at 68.84% full, around 17 percentage points below seasonal averages. The UK is particularly constrained at 31.31%, Germany at 56.02%, the Netherlands at 53.65%. Projections suggest the EU will peak near 75% in early November, well short of the 80% target, and could exit winter at 25%—the lowest post-winter level since 2018.
Norwegian pipeline outages extend
An unplanned outage at Norway's Troll field has been extended to 21 September, cutting 39.4 million cubic metres per day, with restrictions rising to 46.2 mcm/d offline from 18 to 25 September. This compounds ongoing seasonal maintenance that had already reduced flows by 68 mcm/d earlier in the week.
French nuclear and hydro constraints
The 3 GW Chooz nuclear plant remains offline through 24 September due to low cooling water levels on the Meuse. French hydro reserves have fallen to 55.4% capacity—the lowest level for mid-September since at least 1997—constraining run-of-river output and reservoir flexibility heading into winter.
6-month direction
Was this week a blip or a trend?
The week-on-week number tells you the direction; these 6-month lines tell you whether it's part of a bigger move. Each tracks a rolling maturity — the near-term price, the next winter and the year ahead — so nothing breaks as contracts roll off. Hover for the value on any day.
Gas forward prices
Rolling maturities · p/therm
Near-term (Oct-26)
Next winter (Win-26)
Year ahead (Cal-27)
Each line is a rolling maturity — the near-term line always follows the current front month, so it never breaks as contracts roll off.
Power forward prices
Rolling maturities · £/MWh
Near-term (Oct-26)
Next winter (Win-26)
Year ahead (Cal-27)
Power tends to track gas; the chart shows how far the recent move has carried.
Your renewal window
Guidance grouped by how soon your contract ends
Timing urgency comes from your deadline; the market view comes from the forward contracts covering each renewal's supply period. Open your band for separate gas and electricity evidence.
Timing and value are different.
Wholesale prices are currently easing. If your contract ends within three months, still get live quotes now — your decision window is shortening. Later renewals have more time to monitor the market.
1–3 monthsOctober–December 2026
Oct 2026Nov 2026Dec 2026
Get live quotes now
Gas is down 2.7–6.7% this week and up 20.4–30.6% over 30 days; electricity down 3.9–6.3% this week, up 15.9–21.9% over 30 days.
⌄
Evidence confidenceMedium
⚠ December leans on Cal-27 only, so it has less seasonal visibility.
Your deadline creates the urgency. Use the current move to compare live supplier quotes now, but don't treat one falling day as proof the market has reached its bottom.
4–6 monthsJanuary–March 2027
Jan 2027Feb 2027Mar 2027
Review and compare
Gas is down 2.7–6.2% this week and up 23.8–30.6% over 30 days; electricity down 3.9–5.3% this week, up 19–21.6% over 30 days.
⌄
Evidence confidenceMedium
GasNear the top
Easing
This week
Down 2.7–6.2% 30 days
Up 23.8–30.6%
low 57.84Sum-27 · today ●136.76 high
Evidence:
Q1-27, Sum-27, Win-27
ElectricityNear the top
Easing
This week
Down 3.9–5.3% 30 days
Up 19–21.6%
low 59.74Sum-27 · today ●109.75 high
Evidence:
Q1-27, Sum-27, Win-27
What this means
Start reviewing the market and compare 12-, 24- and 36-month options. You have time for a considered decision, so weigh the certainty each term buys rather than chasing a perfect day.
7–9 monthsApril–June 2027
Apr 2027May 2027Jun 2027
Prepare and monitor
Gas is down 0.8–4.4% this week and up 14.1–31.6% over 30 days; electricity down 2.4–4.5% this week, up 9.2–21% over 30 days.
⌄
Evidence confidenceMedium
GasNear the top
Easing
This week
Down 0.8–4.4% 30 days
Up 14.1–31.6%
low 65.81Win-27 · today ●129.25 high
Evidence:
Q2-27, Sum-27, Win-27, Sum-28
ElectricityNear the top
Easing
This week
Down 2.4–4.5% 30 days
Up 9.2–21%
low 74.51Win-27 · today ●108.69 high
Evidence:
Q2-27, Sum-27, Win-27, Cal-28
What this means
Get usage and site details ready, monitor the relevant forward contracts and use indicative quotes to understand the range. No need to force a decision while visibility is adequate.
10–12 monthsJuly–September 2027
Jul 2027Aug 2027Sep 2027
Plan ahead and watch
Gas is down 0.8–4.4% this week and up 14.1–30.6% over 30 days; electricity down 2.4–4.2% this week, up 9.2–20.6% over 30 days.
⌄
Evidence confidenceMedium
GasNear the top
Easing
This week
Down 0.8–4.4% 30 days
Up 14.1–30.6%
low 65.81Win-27 · today ●129.25 high
Evidence:
Sum-27, Win-27, Sum-28
ElectricityNear the top
Easing
This week
Down 2.4–4.2% 30 days
Up 9.2–20.6%
low 74.51Win-27 · today ●108.69 high
Evidence:
Sum-27, Win-27, Cal-28
What this means
Plan your procurement timetable and stay informed. Far-dated products can hide seasonal detail, so a firm buy-or-wait instruction would be false precision at this stage.
The honest read
Gas and power are not moving together. That makes any single read of the market less reliable.
And wholesale is only part of a quote — non-energy charges, credit, volume and shape all move the final rate. The practical decision is how much further movement your business can tolerate before its contract deadline.
If prices ease further
Wind, milder weather and diplomacy help
Saudi Arabia restores pipeline capacity on schedule within weeks, Qatari LNG gradually returns to market, and Atlantic weather patterns deliver sustained wind generation through late September. Storage injection campaigns accelerate as temperatures cool, easing the structural tightness that has underpinned the month-long climb.
If prices rise again
Low storage leaves little cushion
A prolonged wind collapse from Monday through mid-week (Week 39 is already pricing it in) could force heavy thermal and gas-fired generation, pushing power and gas prices higher again. If that coincides with another geopolitical flare-up in the Middle East, the week's easing could quickly reverse.
Fixing buys budget certainty. It does not prove that a business has predicted the market correctly.
Where the week ended across every contract — kept for readers who want the detail.
Open gas and electricity forward tables Monthly, quarterly, seasonal and annual contracts · week-ending close
View data ⌄
Gas
p/therm
Contract
Price
Day
Week
30d
Oct-26
month
190.73
↓ 1.41%
↓ 6.99%
↑ 20.88%
Nov-26
month
193.81
↓ 1.68%
↓ 6.73%
↑ 20.43%
Dec-26
month
195.28
↓ 1.71%
↓ 6.61%
—
Q4-26
quarter
193.27
↓ 1.60%
↓ 6.78%
↑ 20.45%
Q1-27
quarter
192.00
↓ 1.61%
↓ 6.15%
↑ 23.83%
Q2-27
quarter
136.75
↓ 1.72%
↓ 4.43%
↑ 31.63%
Win-26
season
192.64
↓ 1.61%
↓ 6.47%
↑ 22.09%
Sum-27
season
130.52
↓ 1.63%
↓ 4.39%
↑ 30.62%
Win-27
season
125.76
↓ 0.81%
↓ 2.70%
↑ 27.64%
Sum-28
season
80.70
↑ 0.07%
↓ 0.79%
↑ 14.11%
Cal-27
calendar
144.79
↓ 1.44%
↓ 4.65%
↑ 27.79%
Cal-28
calendar
93.17
↓ 0.23%
↓ 1.25%
↑ 17.91%
Cal-29
calendar
75.58
↑ 0.57%
↑ 1.16%
↑ 10.92%
Electricity
£/MWh
Contract
Price
Day
Week
30d
Oct-26
month
147.31
↓ 1.78%
↓ 6.02%
↑ 17.64%
Nov-26
month
157.11
↓ 2.24%
↓ 6.31%
↑ 15.91%
Dec-26
month
155.93
↓ 1.89%
↓ 6.18%
—
Q4-26
quarter
153.41
↓ 1.97%
↓ 6.17%
↑ 16.50%
Q1-27
quarter
155.79
↓ 4.58%
↓ 5.28%
↑ 21.60%
Q2-27
quarter
106.55
↓ 1.81%
↓ 4.49%
↑ 21.02%
Win-26
season
154.59
↓ 3.29%
↓ 5.73%
↑ 18.99%
Sum-27
season
103.48
↓ 1.68%
↓ 4.19%
↑ 20.61%
Win-27
season
104.48
↓ 1.43%
↓ 3.85%
↑ 19.00%
Cal-27
calendar
117.14
↓ 2.59%
↓ 4.47%
↑ 21.86%
Cal-28
calendar
80.59
↓ 0.78%
↓ 2.35%
↑ 9.16%
Cal-29
calendar
71.67
→ 0.00%
↓ 1.12%
↑ 5.60%
Fixed-term choices
Contract length is a risk decision, not a forecast
No term protects against every outcome. Weigh the certainty the business wants against how soon it is willing to return to the market.
12
months
More flexibility if markets fall, but the business returns to the market sooner.
Shorter budget certainty
Earlier exposure to the next renewal
Useful where flexibility matters most
24
months
A middle ground between price certainty and revisiting the market.
Two-year budgeting
Less frequent procurement
Still allows a medium-term review
36
months
Greater certainty, but a longer commitment if markets later fall.
Longest budget protection
Reduced exposure to near-term shocks
Higher opportunity cost if prices drop
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Gas -4.4% w/w, power -4.7% w/w.","gasSignal":"PRICES EASING","powerSignal":"PRICES EASING"},"moves":{"daily":{"gas_pct":-1.14,"power_pct":-2},"weekly":{"gas_pct":-4.37,"power_pct":-4.68},"monthly":{"gas_pct":22.36,"power_pct":17.08}},"spot":{"gas_price":191.6,"gas_change_pct":null,"power_price":103.95,"power_change_pct":null},"reference":{"contract":"Sum-27","gas_price":130.52,"power_price":103.48,"gas_day_pct":-1.628,"gas_week_pct":-4.39,"gas_30d_pct":30.624,"power_day_pct":-1.682,"power_week_pct":-4.19,"power_30d_pct":20.606},"front_month":{"key":"oct26","label":"Oct-26","gas":{"price":190.73,"day_pct":-1.406,"week_pct":-6.99,"m30_pct":20.884,"trend":"rising","streak":{"dir":"down","days":3},"range_30d":{"low":157.38,"high":205.19,"position":0.698},"net_pct":20.9},"power":{"price":147.31,"day_pct":-1.78,"week_pct":-6.02,"m30_pct":17.641,"trend":"rising","streak":{"dir":"down","days":3},"range_30d":{"low":124.62,"high":158,"position":0.68},"net_pct":17.6}},"windows":[{"key":"oct26","label":"Oct-26","context":"In the next 1–3 months","horizon_rank":0,"is_front":true,"stance":"review","note":"October gas and power both fell 6–7% this week but remain 20–18% higher than a month ago, sitting in the upper half of their 30-day range. The week's easing reflects fading acute supply panic, not a fundamental repricing — storage is still tight, winter risk is still real, and you are still paying significantly more than you would have in August. Worth reviewing live quotes now to understand the current cost of fixing; waiting may not bring material relief.","gas":{"price":190.73,"day_pct":-1.406,"week_pct":-6.99,"m30_pct":20.884,"trend":"rising","streak":{"dir":"down","days":3},"range_30d":{"low":157.38,"high":205.19,"position":0.698},"net_pct":20.9},"power":{"price":147.31,"day_pct":-1.78,"week_pct":-6.02,"m30_pct":17.641,"trend":"rising","streak":{"dir":"down","days":3},"range_30d":{"low":124.62,"high":158,"position":0.68},"net_pct":17.6}}],"spotlight":{"contract":"oct26","label":"Oct-26","fuel":"gas","metric":"30d","value":20.884,"dir":"up","trend":"rising","text":"October gas has climbed 20.9% over 30 days and sits near the top of that range, even after this week's 7% fall. The month-long rise reflects genuine winter supply concerns (storage well below normal, Middle East tensions, Norwegian outages) rather than a temporary spike — which is why the easing this week has not brought prices back to August levels. Anyone renewing in the next 1–3 months is still paying a material premium to what they paid a month ago."},"narrative":{"headline":"Gas and power fell hard mid-week, then eased back — but near-term stays dear","summary":"Both fuels spiked on Monday as Middle East tensions tightened supply, peaked on Tuesday, and spent the rest of the week sliding lower. The week closed down 6–7%, yet both sit well above where they were a month ago.","verdict":"Near-term prices have eased this week but remain elevated; far-dated contracts have moved less. If you renew in the next 1–3 months, prices are still high — worth reviewing live quotes now rather than waiting. Longer-dated renewals can afford to watch.","trend_read":{"gas":"Gas has risen 20.9% over the past month, climbing steadily — then this week it peaked mid-way (Tuesday at 207.5p/therm on the winter contract) and slid back down, finishing the week 6–7% lower. Today it sits in the upper half of that month-long range, with three days of falls running.","power":"Power has risen 17.6% over the past month in the same steady climb — peaked on Tuesday (158p/MWh on the October contract), and has fallen every day since, closing the week 6% lower. It too sits in the upper half of the month's range, with three days of declines running."},"scenario":{"upside":"A prolonged wind collapse from Monday through mid-week (Week 39 is already pricing it in) could force heavy thermal and gas-fired generation, pushing power and gas prices higher again. If that coincides with another geopolitical flare-up in the Middle East, the week's easing could quickly reverse.","downside":"Saudi Arabia restores pipeline capacity on schedule within weeks, Qatari LNG gradually returns to market, and Atlantic weather patterns deliver sustained wind generation through late September. Storage injection campaigns accelerate as temperatures cool, easing the structural tightness that has underpinned the month-long climb."},"drivers":[{"title":"MIDDLE EAST SUPPLY SHOCK","body":"Saudi Arabia's 1,200 km East-West pipeline was shut by drone strikes, taking 4 million barrels per day of bypass capacity offline and leaving the Red Sea Yanbu storage facility with only 5–7 days of export cover. Qatari LNG exports were curtailed under force majeure, and commercial transits through the Strait of Hormuz collapsed to single digits. Brent crude climbed to $107–$108.50 per barrel on Monday and Tuesday.","tone":"up","outlook":"mixed","soWhat":"This pushed both gas and power up sharply mid-week; relief came as Saudi Arabia signalled restoration within weeks and US military escorts resumed Hormuz traffic, but LNG supply remains tight."},{"title":"SAUDI PIPELINE RESTORATION SIGNALLED","body":"By Wednesday, Saudi Arabia confirmed plans to restore roughly half the East-West pipeline capacity within days and achieve full operation within six weeks. Brent crude retreated from $108 to $104–$105.50 per barrel, and the immediate supply panic eased.","tone":"down","outlook":"sticks","soWhat":"This is why the week reversed mid-way; prices have eased as the acute crisis narrative faded, though global LNG supply for 2026 is now forecast to decline by 20 million tonnes year-on-year."},{"title":"EUROPEAN STORAGE BELOW SEASONAL NORM","body":"Total EU storage stands at 68.84% full, around 17 percentage points below seasonal averages. The UK is particularly constrained at 31.31%, Germany at 56.02%, the Netherlands at 53.65%. Projections suggest the EU will peak near 75% in early November, well short of the 80% target, and could exit winter at 25%—the lowest post-winter level since 2018.","tone":"up","outlook":"sticks","soWhat":"This structural tightness underpins the month-long climb in prices and will likely keep winter contracts elevated; it is why far-dated gas and power have not fallen as much as near-term."},{"title":"NORWEGIAN PIPELINE OUTAGES EXTEND","body":"An unplanned outage at Norway's Troll field has been extended to 21 September, cutting 39.4 million cubic metres per day, with restrictions rising to 46.2 mcm/d offline from 18 to 25 September. This compounds ongoing seasonal maintenance that had already reduced flows by 68 mcm/d earlier in the week.","tone":"up","outlook":"fades","soWhat":"Near-term supply pressure; the outage is temporary but adds to the week's supply narrative."},{"title":"FRENCH NUCLEAR AND HYDRO CONSTRAINTS","body":"The 3 GW Chooz nuclear plant remains offline through 24 September due to low cooling water levels on the Meuse. French hydro reserves have fallen to 55.4% capacity—the lowest level for mid-September since at least 1997—constraining run-of-river output and reservoir flexibility heading into winter.","tone":"up","outlook":"mixed","soWhat":"Structural support to winter power prices; relief is not expected until October as river temperatures ease."},{"title":"WIND SWINGS DRIVE SPOT VOLATILITY","body":"An active Atlantic low-pressure system swept into Northwest Europe mid-week, pushing UK wind to 17 GW and German wind toward 35 GW by the weekend, triggering renewable curtailments. However, high-pressure systems are forecast to settle over the region from Monday 21 to Wednesday 23 September, collapsing wind speeds to 3–4 metres per second and tightening generation balances sharply.","tone":"down","outlook":"mixed","soWhat":"Week-ahead power contracts (Week 39) have jumped to multi-year highs (German Week 39 at €184.35/MWh) on the forecast wind collapse; spot relief this weekend will reverse into tightness next week."},{"title":"COAL GENERATION OUTCOMPETES GAS","body":"Clean dark spreads (coal generation margins) remain well above negative clean spark spreads (gas generation margins) across the continent, keeping coal dispatched ahead of gas in the merit order. German clean dark spreads hold above €46/MWh, supporting coal economics.","tone":"down","outlook":"sticks","soWhat":"This structural advantage for coal over gas reduces gas-fired generation demand and provides some offset to tight gas supply; it is why power has not risen as much as 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