Marr cranes’ 100 m flue gas stack at North London: modular lift lessons for engineers
Reviewed by Tom Sullivan

First reported on New Civil Engineer
30 Second Briefing
Marr Contracting has completed installation of a 100m modularised flue gas stack at the North London Heat and Power Project, using heavy-lift cranes to assemble large prefabricated sections on a constrained energy-from-waste site. The chimney stack, built from modular steel sections with integrated flues and access systems, was lifted into place to minimise work at height and reduce on-site welding and bolting. For contractors and designers, the project reinforces the viability of modular tall-stack construction on tight urban footprints with complex lifting logistics.
Technical Brief
- For other EfW and industrial stacks, similar modular crane strategies can materially reduce high-risk erection activities.
Our Take
Marr Contracting’s work on the 100 m flue gas stack at the North London Heat and Power Project aligns with its deployment of the Favelle Favco M2480D on Encyclis’ Walsall Energy Recovery Facility, signalling a niche in complex vertical lifting for UK energy-from-waste infrastructure.
Within our 917-item Infrastructure corpus, Marr Contracting appears mainly on technically demanding schemes, suggesting UK clients are turning to specialist heavy-lift contractors where stack height and constrained urban sites in regions like North London raise both safety and programme risk.
Prepared by collating external sources, AI-assisted tools, and Geomechanics.io’s proprietary mining database, then reviewed for technical accuracy & edited by our geotechnical team.


