Boosting energy efficiency in the public sector: practical tips for SMEs
As the UK accelerates toward its Net Zero targets, energy efficiency is no longer just a buzzword, it’s a business imperative. For SMEs operating within or alongside the public sector, improving energy performance isn’t just about cutting costs; it’s about contributing to a more sustainable future while meeting growing expectations from clients, partners, and regulators.
Public sector buildings, whether these are offices, emergency services, or social housing, offer a wide range of opportunities for energy savings. Here’s how small businesses in the public sector can take action and lead the way in energy efficiency.
Start with Smart Basics
Many public sector buildings are office-based, and the fundamentals of energy efficiency apply just as strongly here:
- Switch off non-essential lighting outside of business hours.
- Install photocell controls to automatically adjust lighting based on daylight levels.
- Upgrade to LED lighting, which could cut lighting costs by up to 80%1.
- Optimise heating and cooling by adjusting switch-on/off times and thermostat settings. Even a 1ºC reduction in heating temperature could reduce costs by 8%1.
- Avoid heating and cooling overlap by setting a 5ºC ‘dead band’ between systems1.
- Turn off unused equipment during the day and especially overnight.
- Improve insulation where possible to reduce heating demand.
- Conduct regular walkarounds to monitor how systems are performing throughout the day and across seasons.
These low-cost, high-impact actions can significantly reduce energy bills and carbon emissions.
Why Smart Meters Matter for Public Sector Businesses
Smart meters offer public sector businesses clear, actionable data on energy use, helping them quickly identify inefficiencies and reduce unnecessary costs – crucial for organisations managing tight budgets or multiple sites. They also make it easier to meet public sector reporting requirements and demonstrate progress towards sustainability targets, which can strengthen bids for new contracts. By providing near real-time insights and automating data collection, smart meters empower SMEs to make smarter decisions, improve operational efficiency, and show leadership on Net Zero goals.
Emergency Services: Think Renewable
Emergency services buildings often operate 24/7 and have large roof spaces which provides perfect conditions for renewable energy solutions:
- Solar panels can generate clean electricity and reduce reliance on the grid. With the right setup, they can offer a strong return on investment.
- Heat pumps are ideal for buildings with consistent heating and hot water needs. They’re efficient, low-carbon, and increasingly cost-effective.
For small businesses supporting emergency services, whether through facilities management, construction, or consultancy, these technologies offer a clear path to sustainability and innovation.
Social Housing: A Long-Term Opportunity
Decarbonising social housing is a monumental task, but it also presents a huge opportunity for businesses in construction, retrofitting, and energy services. The approach will vary by provider, but the direction is clear: energy efficiency and low-carbon heating are non-negotiable.
Resources like the National Housing Federation’s guide to decarbonising social housing are a great starting point for SMEs looking to align their services with sector needs.
Leading the Way in Public Sector Sustainability
Energy efficiency isn’t just for big players. Small public sector organisations have a vital role to play, and a lot to gain. By taking practical steps today, you can future-proof your business, reduce costs, and help build a greener public sector for tomorrow.
For more practical advice on how to reduce your emissions and save on your energy costs, download our guide created in partnership with the Carbon Trust.
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The information in this blog is based on resources and guidance from the Carbon Trust. Accurate as of April 2026. For more information, visit the Carbon Trust’s website at carbontrust.com