The London Metal Exchange said on Friday that its March 2026 Sustainability Spotlight marks progress on two operational fronts: the rollout of LME Insight for sustainable metal premium price discovery, and the integration of EU Carbon Border Adjustment Mechanism (CBAM) reporting requirements into LME rules for aluminium.
Both systems run through LMEpassport, the exchange’s digital disclosure register. In practical terms, LMEpassport is no longer just a place for producers to publish sustainability credentials. It is becoming the data layer that determines premium pricing eligibility and regulatory compliance for metals traded on the exchange.
Sustainable premium pricing
LME Insight launched in February alongside a confirmed methodology for sustainable metal premium pricing, with pricing expected to go live later in 2026. The pricing administrator is Commodity Pricing and Analysis Limited (CPAL), a HKEX Group sister company established in Dubai in October 2025.
The methodology covers LME-approved aluminium, copper, nickel and zinc that meet defined carbon intensity thresholds and disclosure requirements via LMEpassport. For aluminium, the threshold is 8 tonnes of CO2-equivalent per tonne of metal produced, assessed using the International Aluminium Institute methodology.
Price discovery is transaction-led, with executed trades ranked highest in the input hierarchy. Where market depth is insufficient, the methodology falls back through lower-ranked inputs and assessed values.
“We are firmly on course to see sustainable metal premium price discovery come to fruition,” said Georgina Hallett, LME Chief Sustainability Officer and Head of Physical Markets.
CBAM reporting now in the rulebook
The LME first consulted on embedding CBAM requirements in May 2024. By March 2026, those proposals have moved to implementation.
All LME-listed aluminium brands must now complete and upload an emissions reporting form to LMEpassport each year, with an annual deadline of 1 September from 2026 onwards. Mandatory verification of emissions data begins on 1 September 2027, covering the 2026 calendar year. The data is not publicly available, as some stakeholders consider certain emissions figures commercially sensitive.
