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

Period

Region

Negative prices (overnight)

Mon 18 Sep · Tue 19 Sep · Wed 20 Sep

What caused it · More notable days

Monday 18 Sep 2023 · half-hourly prices

South Eastern England

Price for each half-hour
Negative price (you’re paid to use power)

Stats for Monday 18 Sep 2023

−2.0p

Cheapest half-hour 11.30pm – 12am

38.8p

Dearest half-hour 6.30pm – 7pm

0.5 hours

Negative prices 11.30pm – 12am

8.5p avg

Cheapest 3 hours 1pm – 4pm

19.0p

Average price on 18 Sep 2023

Show as a table

Time	Price
12am – 12.30am	18.8p
12.30am – 1am	17.3p
1am – 1.30am	18.7p
1.30am – 2am	18.1p
2am – 2.30am	16.6p
2.30am – 3am	14.6p
3am – 3.30am	15.0p
3.30am – 4am	13.4p
4am – 4.30am	15.3p
4.30am – 5am	13.0p
5am – 5.30am	18.2p
5.30am – 6am	17.6p
6am – 6.30am	20.3p
6.30am – 7am	24.9p
7am – 7.30am	24.7p
7.30am – 8am	28.2p
8am – 8.30am	25.4p
8.30am – 9am	25.1p
9am – 9.30am	23.3p
9.30am – 10am	22.9p
10am – 10.30am	16.2p
10.30am – 11am	20.2p
11am – 11.30am	21.4p
11.30am – 12pm	19.4p
12pm – 12.30pm	17.9p
12.30pm – 1pm	14.0p
1pm – 1.30pm	12.2p
1.30pm – 2pm	6.3p
2pm – 2.30pm	10.0p
2.30pm – 3pm	5.9p
3pm – 3.30pm	6.5p
3.30pm – 4pm	10.0p
4pm – 4.30pm	22.1p
4.30pm – 5pm	29.2p
5pm – 5.30pm	32.0p
5.30pm – 6pm	35.7p
6pm – 6.30pm	38.5p
6.30pm – 7pm	38.8p
7pm – 7.30pm	26.6p
7.30pm – 8pm	26.2p
8pm – 8.30pm	25.4p
8.30pm – 9pm	20.3p
9pm – 9.30pm	22.6p
9.30pm – 10pm	13.2p
10pm – 10.30pm	14.6p
10.30pm – 11pm	10.9p
11pm – 11.30pm	7.3p
11.30pm – 12am	−2.0p