Energy was last better‑than‑free: yesterday Next

On the Agile Octopus tariff, customers get paid to use electricity when there’s too much in the grid.

That’s cheaper than Octopus Energy paying to store it.

The price changes every half-hour.

How free electricity works

Region

Pick a date

Pick a date · last 30 days

South Western England

September 2026

27282930

October 2026

Free or negative pricesToday

Tomorrow can be picked once prices are out, after 4pm. Only the last 30 days can be picked for now.

30‑day average, Agile vs other tariffs

13%

dearer than Flexible Octopus

30.0p vs 26.6p

8%

dearer than Octopus Tracker

30.0p vs 27.7p

15%

dearer than Octopus Go

30.0p vs 26.2p

28%

dearer than Cosy Octopus

30.0p vs 23.5p

Stats for 27 Sep to 26 Oct 2026

−7.9p

Cheapest in the last 30 days was on 25 Oct

28.5 hours

Negative prices avg 7h per neg. day

13% of days

4 of 30 days had negative prices

15.5 hours

Longest negative period was on 25 Oct

30.0p

Average price over last 30 days

Show as a table
DateMinAverageMax
27 Sep 2026−2.4p22.3p49.9p
28 Sep 202628.1p40.4p74.7p
29 Sep 202613.5p32.2p55.6p
30 Sep 20269.9p26.7p51.9p
VAT cut to 0%. VAT on home electricity is 0% from this date until 31 Mar 2027. It was 5%, not the usual 20%, so this saves only about 1.3p on a typical price, which normal day-to-day changes can hide.
1 Oct 202626.8p34.7p55.3p
2 Oct 202625.1p34.4p50.4p
3 Oct 202625.7p34.7p52.8p
4 Oct 20267.3p30.0p53.6p
5 Oct 202612.4p29.4p54.6p
6 Oct 202627.3p37.8p74.6p
7 Oct 202619.4p34.4p53.1p
8 Oct 202612.9p28.2p54.3p
9 Oct 20262.4p11.9p29.8p
10 Oct 2026−3.7p9.3p47.8p
11 Oct 202618.2p33.6p56.9p
12 Oct 202616.1p34.6p53.7p
13 Oct 202613.7p26.3p49.7p
14 Oct 202615.3p32.1p51.4p
15 Oct 202622.4p34.6p62.2p
16 Oct 202628.9p39.5p59.6p
17 Oct 202625.4p34.6p55.3p
18 Oct 202624.7p35.3p57.8p
19 Oct 202631.7p40.9p60.9p
20 Oct 202628.6p38.1p55.9p
21 Oct 202618.8p36.0p55.0p
22 Oct 202617.4p32.6p61.9p
23 Oct 20266.4p33.5p52.7p
24 Oct 2026−0.0p7.4p29.9p
25 Oct 2026−7.9p3.6p33.6p
26 Oct 20266.2p29.8p57.7p