It closed 32.5 factors decrease, or 0.43%, to 7,593.22.
It was met with staunch opposition from environmental campaigners however welcomed by the Government’s power safety secretary.
But the trail for rates of interest over the remainder of the yr and into 2024 stays entrance and centre of traders’ minds, analysts mentioned.
Michael Hewson, chief market analyst for CMC Markets UK, mentioned: “As we come to the end of the week, the month, and the quarter, there remains a great deal of uncertainty as to what sort of economy we will see in the fourth quarter, and whether the determination of central banks to keep rates high will change if we see further deterioration in the economic outlook over the next few months.”
The “penny is dropping” that charges could keep at present ranges for longer than thought, with power costs rising sharply since June, he mentioned.
Elsewhere in Europe, Germany’s Dax fell by 0.25% and France’s Cac 40 dipped by 0.03%.
After a uneven day for the pound, it was round 0.1% decrease in opposition to the US greenback at 1.2145 by the point European markets closed. Sterling was up 0.4% in opposition to the euro to 1.154.
The value of Brent crude oil soared by 2.64% to 96.44 US {dollars} per barrel.
In firm news, shares in Pendragon – which is on the centre of a three-way takeover tussle – leapt increased after the automotive dealership group posted increased half-year income.
The firm mentioned it has obtained takeover proposals from AutoNation, Hedin and Penske, and Lithia Motors. It had mentioned final week it had agreed to promote its UK motor and leasing companies to Lithia for £250 million.
The replace on its improved revenues and income noticed its share value leap by 13.2% on Wednesday.
Elsewhere, shares in cruise and insurance coverage firm Saga moved decrease regardless of it telling traders it expects to beat market expectations this yr with double-digit income progress and improved underlying income.
But the corporate flagged that its insurance coverage division had been dealing with a tricky inflationary market, with the motor insurance coverage unit weighing on earnings. Its share value was down by 4.9% at shut.
The greatest risers on the FTSE 100 had been IMI, up 77p to 1,575p, BP, up 7.6p to 538.5p, Shell, up 30p to 2,629p, Hikma Pharmaceuticals, up 13p to 2,093p, and Halma, up 11.5p to 1,916p.
The greatest fallers on the FTSE 100 had been Ocado, down 66.6p to 615p, Centrica, down 8.4p to 157.75p, Land Securities, down 26p to 579.2p, Sainsbury’s, down 9.1p to 252.6p, and Unite Group, down 29p to 891p.