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

Thu 17 Sep · Fri 18 Sep · Sat 19 Sep

What caused it · More notable days

Saturday 19 Sep 2026 · half-hourly prices

South Eastern England

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

Stats for Saturday 19 Sep 2026

−4.4p

Cheapest half-hour 3am – 3.30am

36.1p

Dearest half-hour 6.30pm – 7pm

14 hours

Negative prices in 3 spells

−4.0p avg

Cheapest 3 hours 3am – 6am

4.5p

Average price on 19 Sep 2026

Show as a table

Time	Price
12am – 12.30am	4.0p
12.30am – 1am	0.7p
1am – 1.30am	0.1p
1.30am – 2am	−3.7p
2am – 2.30am	−1.3p
2.30am – 3am	−1.9p
3am – 3.30am	−4.4p
3.30am – 4am	−4.1p
4am – 4.30am	−3.7p
4.30am – 5am	−3.9p
5am – 5.30am	−3.7p
5.30am – 6am	−4.3p
6am – 6.30am	−2.5p
6.30am – 7am	−2.9p
7am – 7.30am	−2.2p
7.30am – 8am	−2.4p
8am – 8.30am	−1.3p
8.30am – 9am	−0.5p
9am – 9.30am	0.5p
9.30am – 10am	0.0p
10am – 10.30am	−1.9p
10.30am – 11am	−2.7p
11am – 11.30am	−2.9p
11.30am – 12pm	−2.3p
12pm – 12.30pm	−2.7p
12.30pm – 1pm	−2.8p
1pm – 1.30pm	−3.2p
1.30pm – 2pm	−3.3p
2pm – 2.30pm	−4.1p
2.30pm – 3pm	−3.6p
3pm – 3.30pm	−1.4p
3.30pm – 4pm	0.9p
4pm – 4.30pm	9.6p
4.30pm – 5pm	16.3p
5pm – 5.30pm	22.8p
5.30pm – 6pm	29.6p
6pm – 6.30pm	35.3p
6.30pm – 7pm	36.1p
7pm – 7.30pm	22.7p
7.30pm – 8pm	22.6p
8pm – 8.30pm	18.4p
8.30pm – 9pm	15.9p
9pm – 9.30pm	19.2p
9.30pm – 10pm	15.0p
10pm – 10.30pm	14.0p
10.30pm – 11pm	8.0p
11pm – 11.30pm	−0.0p
11.30pm – 12am	−0.0p