What is a Level 5 DSM EPC and why is it used for London towers?

A Level 5 EPC uses Dynamic Simulation Modelling (DSM) to accurately predict energy performance in complex buildings. For large City of London towers like this 450,000 sq.ft. refurbishment, DSM provides the precision needed for advanced HVAC systems and heat network connections.

How did HollenPlus support the building-wide refurbishment at this City tower?

We provided comprehensive advisory services across all 18 floors, advising on cost-effective improvements to refurbishment specifications and specifying maximum carbon factors to ensure the client achieved their target EPC rating.

What role do carbon factors play in achieving a target EPC rating?

Carbon factors determine how energy consumption is translated into emissions. By advising on these factors during the design and refurbishment phase, HollenPlus ensures that the building's energy strategy aligns perfectly with the desired EPC outcome.

Can HollenPlus manage EPC assessments for buildings with heat network connections?

Yes, we specialise in the technical complexities of connecting large-scale assets to heat networks, ensuring that the modelling accurately reflects the energy efficiency benefits and carbon impact of such systems.

Level 5 DSM EPC,

City of London

2025 / 2026

HollenPlus was appointed to undertake a level 5 DSM EPC for a 450,000 sq.ft City of London tower.

This was a detailed project across 18 floors totalling 450,000 sq.ft. during a building wide refurbishment.

The project involved connection to a heat network, and HollenPlus was involved throughout the process of specifying the maximum carbon factors that would enable the achievement of our clients target EPC.

HollenPlus provided comprehensive advisory services and detailed support throughout the process, advising on cost-effective improvements that could be made to refurbishment specifications.

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