UK Energy Market Update: 29th September - 3rd October 2025


By Thomas McGlynn 6 October 2025

🔥
Weekly Avg Gas
75.99p
▼ 4.47%
was 79.55p last week
Weekly Avg Power
£78.05
▼ 7.08%
was £84.00 last week
THIS WEEK'S SIGNAL
🔻 EASING MARKET

Gas (▼4.47%) and power (▼7.08%) both fell this week. Forward prices dropped 3–5% across key contracts — a constructive window for near-term renewals.

💡
What This Means
Forwards fell steadily (not crashed). If you're renewing before spring, this is a practical window to lock rates.

Markets eased notably this week. Day-ahead gas averaged 75.99p/th (▼4.47% vs last week's 79.55), while power averaged £78.05/MWh (▼7.08% vs 84.00). Friday closed on sharp day-ahead lows (gas 67.83p/th, power £52.00/MWh) even as forwards — the prices suppliers use for quotes — nudged 3–5% lower week-on-week rather than crashing.

📊 Weekly Market Snapshot (Day-Ahead)

Averages: Gas 75.99p/th Averages: Power £78.05/MWh Gas High/Low: 80.60 / 67.83 Power High/Low: £96.15 / £52.00
Date Gas (p/th) Δ vs prior day Power (£/MWh) Δ vs prior day
Mon 29/09 80.60 96.15
Tue 30/09 79.90 ▼ 0.70 85.94 ▼ 10.21
Wed 01/10 76.00 ▼ 3.90 81.67 ▼ 4.27
Thu 02/10 75.60 ▼ 0.40 74.47 ▼ 7.20
Fri 03/10 67.83 ▼ 7.77 52.00 ▼ 22.47
Mon 29/09
Gas 80.60 p/th
Power £96.15 /MWh
Tue 30/09
Gas 79.90 p/th
Power £85.94 /MWh
Wed 01/10
Gas 76.00 p/th
Power £81.67 /MWh
Thu 02/10
Gas 75.60 p/th
Power £74.47 /MWh
Fri 03/10
Gas 67.83 p/th
Power £52.00 /MWh
💡 Remember: Day-ahead moves are short-term signals. Supplier quotes are based on forwards (below).
5 Week Price Trend Section

📈 5 Week Price Trend

Week Ending Average Gas (p/th) Direction Avg Power (£/MWh) Direction
03/10/2025 75.99 78.05
26/09/2025 79.55 84.00
19/09/2025 79.06 54.41*
12/09/2025 79.55 67.15*
05/09/2025 78.69 75.96

📌 *Power contained anomalous prints these weeks and didn't reflect real contract levels.

⚡ What’s Driving Prices?

Comfortable Gas Supply

Healthy LNG arrivals, good storage levels, and shoulder-season demand helped ease the curve this week.

Lower pressure on near-term
Short-Term Power Fundamentals

Friday’s low day-ahead power was mainly about renewables and system conditions, not a structural change in forwards.

Spot ≠ Quotes
Key Risks to Watch

Norwegian flows, LNG send-out, and early-autumn weather. A cold turn or outages can quickly lift winter strips.

Winter sensitivity

📈 Forward Market Pricing — what suppliers actually watch

Week-on-week change compared to Friday 26/09/2025.

🔥 Gas (p/th)

Product Price WoW%
Nov-25 80.26 ▼5.35%
Dec-25 83.23 ▼4.98%
Q1-26 84.00 ▼4.39%
Summer-26 76.53 ▼3.38%
Cal-26 80.01 ▼3.66%

⚡ Power (£/MWh)

Product Price WoW%
Nov-25 80.53 ▼3.88%
Dec-25 79.98 ▼4.99%
Q1-26 83.06 ▼3.09%
Cal-26 76.64 ▼3.41%

📊 Forward Trend Snapshot

Now → Winter
🔻 Falling
3–5% lower this week
Spring / Summer 2026
● Stable
Little weekly change
Late 2026 / 2027
● Stable
Flat overall

📖 Understanding This Week’s Price Movement

Why did forwards fall while day-ahead crashed?

Friday’s day-ahead lows (gas 67.83p/th, power £52.00/MWh) reflected short-term system conditions. Forward contracts — which set quote levels — eased ~3–5% week-on-week rather than collapsing.

What this means:

  • Near-term forwards caught up to softer fundamentals; longer strips (e.g. Cal-26 gas 80.01p/th) remain above spot.
  • If fundamentals stay soft, forwards can drift lower — but cold weather or supply issues can reverse this quickly.
  • Fixing on forwards removes exposure to day-ahead volatility seen this week.
  • Actionable window: locking now can bank this week’s 3–5% drop before sentiment turns.
Bottom line: steady forward declines signal a practical opportunity to fix — without relying on fragile day-ahead dips.

📉 6-Month Market Trend

This chart tracks how wholesale gas and power prices have moved over the last six months — showing the peaks, troughs, and key turning points that shaped today’s market.

A graph of last 6 month day annual wholesale market reports

🔍 What the Chart Shows

The last six months highlight how day-ahead and forward wholesale prices have fluctuated across key seasonal periods. Current levels sit near the lower end of the range seen since spring.

  • Gas: Prices softened through early autumn, now roughly 10–15% below mid-summer highs.
  • Power: Mirrored gas but with sharper intraday swings, driven by wind generation and short-term demand shifts.
  • Overall: Market sentiment remains cautious — stable storage and mild weather have limited upside, but any cold snap could reverse the trend quickly.

In summary: This week’s price action sits within a wider six-month downtrend, suggesting current rates still offer relative value for businesses fixing ahead of winter.

⚡ Is Now a Good Time to Get Prices?

Important: We only arrange fully fixed contracts — no partial fixes or variable rates.
Contract ends October – December 2025
Critical

Act this week. Winter-25 and Q1-26 fell 3–5% this week. With spot now at 75.99p/th (gas) and £78.05/MWh (power), forwards look sensible protection.

You’re in the critical window — fixing now removes the risk of further rises as colder weather approaches.

Get Your Quote Now
Contract ends January – March 2026
Urgent

Benchmark this week. Q1-26 is 84.00p/th (gas) and £83.06/MWh (power). With forwards down 3–4%, it’s a practical time to review quotes.

You’re in the 3-month window — fixing now removes winter risk before suppliers reprice for colder demand.

Get Your Quote Now
Contract ends April – June 2026
Monitor

Monitor monthly. Summer-26 is 76.53p/th (gas) and around £72/MWh (power) — both fell ~3% this week.

No rush yet, but track the trend — discounts may not last if winter tightens or geopolitical risk increases.

Get Your Quote Now
Contract ends Beyond June 2026

Track quarterly. Cal-26 and Cal-27 remain relatively stable. No immediate urgency, but monitor for early upward movement.

Sign up for our weekly updates so you can move at the right time — we’ll flag any meaningful shifts in longer-term pricing.

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🔭 What to Watch Next

  • Norway flows & maintenance: extensions or extra outages (e.g. Langeled) can lift prices quickly.
  • Wind forecasts (7–10 days): calm spells usually mean more gas-fired power and higher costs.
  • LNG arrivals & send-out: strong berthings and terminal output help keep supply steady.
  • Storage behaviour: early withdrawals or slower injections hint at tighter winter risk.
  • Interconnectors: UK–EU gas/power flows — constraints or strong exports can firm prices.
  • Carbon & oil: higher EUA carbon or Brent prices often add cost pressure to generation.
  • Geopolitics: tensions in Ukraine or the Middle East can quickly impact sentiment.

❓ FAQs on This Week’s Market

Comfortable gas supply, mild weather, and healthy LNG imports eased short-term price pressure across the UK and Europe. Power largely followed gas lower.
Not fully. Supplier quotes are based on forwards, which fell ~3–5% — less dramatic than spot, but still constructive for near-term renewals.
If your contract ends before spring, it’s a practical time to fix while forwards remain soft. For longer lead times, monitor monthly but remember winter risk rises quickly.
Extended cold spells, LNG delivery issues, or Norwegian pipeline disruptions can add risk premium fast — especially through late Q4 and early Q1.

💬 Final Thoughts

It’s been a constructive week overall — wholesale gas and power both moved lower, easing 3–5% across key forward contracts. Despite some sharp daily volatility, underlying market sentiment remains steady.

Forwards haven’t yet fully caught up with the drop in day-ahead pricing, which means there’s still a short-term opportunity for businesses to fix before the curve reacts.

If your contract ends within the next 3–6 months, this is a valuable moment to benchmark — or lock — rates while pricing remains at the lower end of recent trading ranges.

Key takeaway: When prices ease gradually rather than crash, it’s often a signal of underlying stability — and a practical time to take action before sentiment shifts.

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