Archive
Notable days for prices on Octopus Energy's Agile tariff: the price spikes, and the days electricity was free or better. Each links to that day's half-hourly prices.
2026
- 17 to 19 SepNegative prices
- 13 to 16 SepThe most expensive days of the period
- 12 SepNegative prices in the middle of the expensive run
- 9 to 11 SepHigh prices
- 4 to 6 SepNegative prices
- 31 AugNegative prices (summer bank holiday)
- 17 AugHigh prices all day
- 12 to 13 AugPrice spike
- 8 AugNegative prices
- 5 AugNegative prices
- 25 to 26 JulNegative prices
- 12 JulNegative prices
- 2 to 4 JulNegative prices
- 27 to 28 JunNegative prices at midday as the heatwave ends
- 23 to 24 JunPrice spike in a record heatwave
- 13 JunNine hours of negative prices
- 7 JunNegative prices through the day
- 4 JunSlightly negative in the afternoon
- 29 to 30 AprNegative prices through the working day
- 22 AprSlightly negative at midday, record zero-carbon share
- 11 to 12 AprNegative prices all weekend
- 7 AprNegative prices at lunchtime, record solar
- 4 to 5 AprNegative prices over Easter (Storm Dave)
- 29 MarBrief negative price at lunchtime (clock-change day)
- 25 MarNegative prices overnight, record wind
- 13 MarPrices touch zero overnight
- 8 JanPrice spike
2025
- 18 to 19 DecPrices touch zero
- 25 NovPrice spike
- 25 to 27 OctNegative prices (clock-change weekend)
- 22 OctPrice spike (one evening)
- 13 to 15 OctPrice spike (three days running)
- 3 to 5 OctNegative prices (Storm Amy, weekend)
- 20 to 21 SepNegative prices (weekend)
- 15 to 16 SepNegative prices (weekdays)
- 10 to 12 SepNegative prices (weekdays)
- 6 to 7 SepNegative prices (weekend)
- 31 AugNegative prices
- 7 to 9 AugZero and negative prices
- 4 to 5 AugStorm Floris, negative prices
- 4 to 5 JulNegative prices
- 1 JulPrice spike
- 28 JunNegative prices
- 22 to 23 JunNegative prices
- 8 JunOne half-hour at zero
- 1 to 3 JunNegative prices
- 31 MayNegative prices
- 29 MayNegative prices (windy weekday)
- 24 to 25 MayNegative prices (bank holiday weekend, record low demand)
- 27 AprNegative prices
- 3 to 5 AprNegative prices (sunny, breezy spell)
- 30 MarNegative prices (clock-change day)
- 20 to 22 JanPrice spike (three days, cap hit twice)
- 10 JanPrice spike (Agile hit the 100p cap)
- 8 JanPrice spike (Agile hit the 100p cap)
- 1 JanNegative prices (New Year's Day)
2024
- 31 DecNegative prices (New Year's Eve gales)
- 21 to 23 DecNegative prices (pre-Christmas gales)
- 15 to 16 DecZero and negative prices (record wind)
- 11 to 13 DecPrice spike, Agile hits its 100p cap (the December “dunkelflaute”)
- 6 DecZero price at midnight (the night before Storm Darragh)
- 23 to 25 NovNegative prices (Storm Bert)
- 4 to 6 NovPrice spike (the November “dunkelflaute”)
- 20 to 21 OctNegative prices (Storm Ashley)
- 16 OctNegative prices (overnight)
- 14 OctPrice spike and the winter's first capacity market notice
- 12 to 13 OctNegative prices (overnight, weekend)
- 27 SepNegative prices (overnight)
- 23 to 25 SepPrice spike
- 14 SepNegative prices (midday, weekend)
- 10 SepNegative prices (overnight)
- 2 to 3 SepPrice spike (low wind)
- 21 to 25 AugNegative prices (Storm Lilian)
- 9 to 12 AugNegative prices
- 4 to 6 JulNegative prices
- 28 JunNegative prices (midday)
- 8 to 9 JunNegative prices (midday, weekend)
- 15 to 16 AprNegative prices (overnight)
- 10 to 14 AprNegative prices
- 6 to 7 AprNegative prices (Storm Kathleen)
- 23 to 24 MarNegative prices (weekend)
- 20 MarPrice spike (low wind)
- 3 to 5 FebNegative prices
- 24 JanNegative prices (Storm Jocelyn)
- 10 to 11 JanPrice spike
- 1 to 2 JanNegative prices (Storm Henk)
2023
- 26 to 29 DecNegative prices (Storm Gerrit)
- 21 to 25 DecNegative prices (Storm Pia and Christmas)
- 29 Nov to 1 DecPrice spike (a cold snap and Demand Flexibility Service events)
- 19 NovNegative prices (overnight, weekend)
- 28 to 29 OctNegative prices (the night the clocks went back)
- 18 to 19 OctNegative prices (Storm Babet)
- 16 OctPrice spike (low wind)
- 11 to 15 OctNegative prices (overnight)
- 6 to 7 OctZero prices (overnight)
- 3 OctNegative prices (overnight)
- 24 to 28 SepNegative prices (Storm Agnes)
- 18 to 20 SepNegative prices (overnight)
- 11 SepPrice spike (low wind)
- 23 to 24 AugPrice spike (low wind)
- 30 JulNegative prices (weekend)
- 23 JulZero prices (overnight, weekend)
- 15 to 16 JulNegative prices (record low net demand)
- 1 to 2 JulNegative prices (a record low day-ahead price)
- 27 MayZero prices (bank holiday weekend sun)
- 10 to 11 AprNegative prices (Easter Monday)
- 25 MarNegative prices (overnight, weekend)
- 7 FebPrice spike (low wind)
- 27 JanPrice spike
- 19 to 24 JanPrice spike (a cold snap and the first Demand Flexibility Service event)
- 13 to 15 JanNegative prices
- 7 to 12 JanNegative prices (record January wind)
- 4 JanNegative prices (overnight)
2022
- 26 Dec to 1 JanNegative prices (Christmas week)
- 7 to 9 DecPrice spike (the December 2022 cold spell)
- 28 Nov to 1 DecPrice spike (calm and cold, at the guarantee’s 82.1p ceiling)
- 10 to 11 NovNegative prices (overnight)
- 7 OctNegative prices (overnight)
- 1 OctNegative prices (the first day of the Energy Price Guarantee)
- 14 SepPrice spike (at the cap)
- 10 to 11 SepPrice spike (at the cap)
- 29 Aug to 1 SepPrice spike (the most expensive month ever, at the 78p cap)
- 11 JunNegative prices (midday, weekend)
- 17 AprZero prices (midday, weekend)
- 6 FebNegative prices (overnight, weekend)
2021
- 30 Dec to 3 JanNegative prices (New Year)
- 17 DecPrice spike (at the cap)
- 11 to 16 DecPrice spike (winter gas crisis, days at the cap)
- 30 Oct to 1 NovZero prices (overnight)
- 20 OctNegative prices (overnight)
- 7 OctPrice spike (the gas price record, every half-hour at the cap)
- 21 MayNegative prices (overnight)
- 10 JanPrice spike (at the cap)
- 5 to 9 JanPrice spike (tight margins in a cold January)
2020
- 29 Dec to 2 JanPrice spike (low wind)
- 24 to 27 DecNegative prices (Christmas and Storm Bella)
- 7 to 9 DecPrice spike (at the cap)
- 15 to 16 NovNegative prices (overnight)
- 2 NovNegative prices (overnight)
- 25 OctNegative prices (the night the clocks went back)
- 29 Sep to 1 OctPrice spike (at the cap)
- 21 SepPrice spike (at the cap)
- 14 to 15 SepPrice spike (at the cap)
- 27 AugPrice spike (at the cap)
- 5 to 6 JulNegative prices (as lockdown eased)
- 28 to 29 JunNegative prices (lockdown, record low demand)
- 6 JunNegative prices (lockdown)
- 22 to 24 MayNegative prices (lockdown, bank holiday weekend)
- 10 to 11 MayNegative prices (lockdown)
- 20 to 22 AprNegative prices (lockdown, midday sun)
- 12 to 13 AprNegative prices (lockdown Easter)
- 5 to 6 AprNegative prices (lockdown)
- 29 MarNegative prices (the first lockdown weekend)
- 5 MarPrice spike (at the cap)
- 16 FebNegative prices (Storm Dennis)
- 1 to 3 FebNegative prices (overnight)
2019
- 8 to 9 DecNegative prices (Storm Atiyah)
- 13 NovPrice spike (at the cap)
- 30 JanPrice spike (at the cap)
- 23 to 24 JanPrice spike (low wind)
- 19 JanPrice spike (low wind)
- 2 to 6 JanPrice spike (low wind)