Nexen's 4MW power contract shows who pays for the carmakers' Scope 3 targets

Start with the arithmetic the announcement leaves out. Four megawatts of contracted capacity against about 6 GWh a year is roughly 1,500 full-load hours, an implied capacity factor near 17% ^[1]. So the headline megawatt figure and the megawatt-hours that reach a carbon ledger are two different things, and only the second one counts when a customer asks what changed at the plant.

Run the emissions claim the same way. About 2,700 tonnes of CO2 avoided over 6,000 MWh implies the displaced electricity carries around 450 kg per MWh ^[2]. Every tonne in this deal rests on that grid factor, which the announcement does not show its work on.

The more useful number is at the other site. If more than 10MW of company-owned solar at Changnyeong is expected to cover about 9% of that plant's power ^[5][6], and it runs at roughly the same hours as the Yangsan blend, the plant is drawing on the order of 165 GWh a year ^[4]. That is the scale a tyre factory actually consumes, and it is the scale against which a 6 GWh contract should be read.

The financing mechanism is the part worth copying, or resisting. At Changnyeong, third-party solar sat on Nexen's roofs under a lease that is now expiring, and Nexen intends to convert those installations into its own generation in phases ^[5]. The company stops being a landlord and starts being an owner, which means capital expenditure on its books. The direct PPA does the same thing on the contract side: the user signs straight with the generator for delivered electricity ^[4]. Nexen supplies original-equipment tyres to Mercedes-Benz, BMW, Audi and Porsche ^[8], and cites those automakers' pressure on supply-chain emissions as the reason for moving ^[10]. None of them appear in the transaction. The supplier funds the abatement and the customer books the improvement in its own supply chain.

What is missing is the commercial core. The announcement gives no price and no contract term ^[13], which are the two things that decide whether a decade of fixed-price renewable power is a hedge against Korean tariffs or a premium paid to stay on an OE approval list. Nor is there a baseline tonnage behind the SBTi-approved 58.8% cut in Scope 1 and 2 emissions by 2034 from 2023 levels ^[9], so the 2,700 tonnes cannot be scored against the target it serves ^[5].

One more caution on the read. No automaker is quoted anywhere in this account; the European pressure, and the claim that Europe now decides competitiveness, comes from Nexen and the reporting around it ^[10][12]. A company official calls the switch a strategic investment rather than simple regulatory compliance, and promises gradual expansion to overseas sites ^[11]. That is the tell. Suppliers do not describe compliance spending as strategy unless the buyer has made it a condition of the order.