What is a TM54 operational energy assessment and when is it needed?

What is a TM54 operational energy assessment and when is it needed?

A TM54 operational energy assessment is the CIBSE methodology for evaluating how much energy a building will actually consume once it is occupied, carried out at the design stage. It answers the question...

What is a TM44 air conditioning report and when is one legally required?

What is a TM44 air conditioning report and when is one legally required?

A TM44 air conditioning report is a legally mandated energy assessment for air conditioning systems with an effective rated output above 12kW in the UK. The inspection must be carried out by an accredited...

The Draft London Plan 2026: Key Changes & Timelines

The Draft London Plan 2026: Key Changes & Timelines

The Draft London Plan was published on Thursday 16 July 2026, and it represents a decisive shift in how the capital approaches growth, housing delivery, and spatial strategy. For developers, landowners,...

CIBSE Loads Through IES-VE: A Practical Guide

CIBSE Loads Through IES-VE: A Practical Guide

For UK building services engineers, producing defensible heating and cooling load calculations is a non-negotiable part of design. This guide focuses on the practical application of CIBSE loads through...

Part O Overheating Compliance: IES Modelling Guide for UK Developers

Part O Overheating Compliance: IES Modelling Guide for UK Developers

If you are developing new residential property in England or Wales, Part O overheating compliance is now one of the most scrutinised elements of the Building Regulations sign-off process. What began in...

TM44 Air Conditioning Inspections: 2026 Compliance & Savings Guide

TM44 Air Conditioning Inspections: 2026 Compliance & Savings Guide

If you own or manage a commercial property in England or Wales, TM44 Air Conditioning inspections are not a voluntary energy-saving exercise. They are a statutory legal requirement, enforced by local trading...

Global Demand for Lithium in 2026: Trends, Risks & UK Strategy

Global Demand for Lithium in 2026: Trends, Risks & UK Strategy

Understanding the global demand for lithium is no longer a niche concern for mining analysts; it is a boardroom priority for any organisation involved in the energy transition. The numbers tell a compelling...

TM59:2026 — What Designers Need to Know About the Updated Overheating Methodology

TM59:2026 — What Designers Need to Know About the Updated Overheating Methodology

The Chartered Institution of Building Services Engineers (CIBSE) has released the 2026 update to TM59, marking the most significant revision to the UK’s residential overheating assessment methodology...

The Need for Cooling in the UK: Why 2026 Is the Year to Prepare

The Need for Cooling in the UK: Why 2026 Is the Year to Prepare

For decades, the British relationship with temperature has been defined by a single, overriding priority: staying warm. Our building regulations, our energy policies, our very architectural identity are...

Solar PV in the UK: 2026 Costs, Savings & Installation Guide

Solar PV in the UK: 2026 Costs, Savings & Installation Guide

Solar PV in the UK has moved firmly from niche eco-investment to mainstream home improvement. If you are still wondering whether British weather can justify the outlay, consider this: the UK now has over...

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