Welcome to Consultus Sustainability

Key Changes to ESOS Phase 4 in 2026

The Energy Savings Opportunity Scheme (ESOS) regulations are changing once again, with updates confirmed for ESOS Phase 4 ahead of the 2026 qualification date and 2027 compliance deadline. For large UK organisations, these changes mark an important shift in how ESOS reporting is approached, with a stronger focus on accountability, measurable progress, and energy savings. 

In this article, we explore what ESOS reporting involves, who it applies to, the key changes organisations need to be aware of for Phase 4 and take a look ahead to Phase 5 predictions. 

5 Surprising Ways Sustainability Lowers Costs for Businesses

There is a common misconception amongst many business owners and senior leaders that being sustainable comes with a hefty price tag. Whilst many sustainability initiatives do require some upfront investment, sustainability can actually be a powerful way to reduce costs, improve efficiency and set your business up for future success.   

In this guide, we’ll explore five surprising ways sustainability can help lower costs for businesses, and how they can improve efficiency across your operations. 

The Cost of Doing Nothing

Welcome to the first blog in our mini-series all about The Cost of Doing Nothing.

The cost of implementing sustainability measures and practices as a business is often hotly debated, both in the press and in boardrooms. Whilst saving the planet feels like all the reason you need to be more sustainable, when businesses across the world are battling rising costs, supply chain pressure, and resource shortages, sometimes, it’s just not enough.

But if you’re worrying about the cost of sustainability to your business, or perhaps you’re wondering whether it’s worth doing anything at all, you might find there is an even greater cost to your business of doing nothing.

In this first blog, we introduce the three main drivers for implementing sustainability measures and how they affect businesses. Over the series, we will then dive into each of these in more detail, exploring some of the issues and opportunities.