Introducing the new look BMSI. Read about it here.

Building Sustainable Futures with Tailored Building Energy Management Solutions

Our digitalised, innovative BeMS solutions, powered by our incredible team and industry-leading technology, help your building reduce energy consumption, save on energy costs, and meet your sustainability targets whilst providing a comfortable environment to support the well-being of all building users.

Control & Intelligence

We are the Brains of your building, managing all systems to ensure optimal comfort and efficiency.

Efficiency & Net Zero

We use data to maximise your energy efficiency and cut carbon, making you a decarbonisation champion.

Resilience & Performance

We deliver strong, scalable power solutions, ensuring your critical systems are always on and ready for the future.

Integration & Data Flow

We unify all your different technologies (old and new), so they speak the same secure language and provide smart insights.

Our Accreditations

We meet customers’ diverse BEMS maintenance and support needs across any sector, from the public sector through to industrial and commercial.

Energy instituteConstructonlineEcoxpertAcclaimAchillesAvettaCylonSiemenssmas worksafetridiumChasEasy 10TrendDistech Controls
What We Do

As the leading systems integrator of BEMS, we support your building on its path to sustainability.

Becoming a “sustainable” building is about more than just reducing your carbon emissions and meeting your environmental targets. It is about ensuring you are resilient enough to not only survive, but thrive in the future.

Meet your environmental targets

Meet your environmental targets

Reduce your carbon emissions, hit your net zero targets, and contribute to a greener future.

Maximise your profitability

Maximise your profitability

Make cost savings on your energy and free up valuable resources to reinvest elsewhere.

Embrace your social responsibility

Embrace your social responsibility

Become a company suppliers want to work with and a company people want to work for.

How we can help

We know that there is no such thing as a standard BEMS package. We work with you to understand your goals and objectives, and implement a solution that helps you achieve those objectives.

Control & Intelligence

We're moving beyond traditional Building Management Systems (BMS) to deliver truly adaptive, energy-efficient, and resilient infrastructure. 

Our integrated Smart Building offering is built on four core, complementary disciplines designed to maximise your asset's performance, whether you manage a hospital, a national retail portfolio, or a flagship commercial office building, helping you achieve your net-zero goals.

Efficiency & Net Zero

With the UK Government’s net zero by 2050 target fast approaching, we're all feeling the pressure to cut our carbon emissions and embrace sustainable change. 

At BMSI, we believe going green shouldn't be complicated; it should be a smart, profitable journey.

We know that before you purchase green energy, you must complete the crucial first step to achieving a net-zero building: maximising your energy efficiency.

Resilience & Performance

Our buildings are becoming smarter and more connected than ever before. This exciting shift towards intelligent spaces places ever-increasing and frankly, unprecedented, demands on the fundamental power systems that keep everything running.

At BMSI, we take the worry out of this complexity. We believe you should be focused on your business goals, not on fuses and failures. That's why we ensure you never have to worry about a sudden outage or fluctuating power quality quietly impacting your performance or chipping away at your profit.

Integration & Data Flow

Your building’s software and hardware aren't just pieces of technology; they are a team that needs to work together perfectly. 

Imagine a building that doesn't just manage systems, but truly listens, learns, and responds to your operational needs. That's the remarkable power of seamless connection.

For your next major project, whether it's a new development or an extensive refurbishment, getting every piece of technology to communicate effortlessly is the absolute key to unlocking success. This is particularly vital when you are coordinating complex systems across environments like a vast hospital campus, a series of regional commercial office buildings, or a national retail chain.

How we can help

We know that there is no such thing as a standard BEMS package. We work with you to understand your goals and objectives, and implement a solution that helps you achieve those objectives.

Upgrade your building’s BEMS

We adopt an individual approach to BEMS design, installation and support which has helped make us one of the UK’s leading systems integrators. The availability of our regional project teams ensures that every customer receives a personalised service.

Upgrade your building’s BEMS

Reduce energy consumption

At BMSI, we specialise in helping buildings optimise their energy consumption. Our advanced software monitors energy usage in real-time and employs best practices to efficiently control usage, empowering buildings to reduce their impact on the environment seamlessly.

Reduce energy consumption

Save on energy costs

Discover a smarter way to manage your building’s ever-increasing energy costs. Our innovative technology detects and addresses energy efficiencies, providing customised strategies that could help you save in the region of 10% on your building’s energy bills.

Save on energy costs

Make informed decisions

We empower buildings to make smarter energy decisions with our advanced management system. By combining cutting-edge technology with our decades of industry expertise, we provide the insights needed to make informed decisions when it comes to energy management, helping buildings optimise usage and efficiency effortlessly.

Make informed decisions

Fully managed service

Experience unrivalled support with BMSI, where our dedicated team ensures your building’s energy systems never miss a beat. With nationwide coverage and service always provided with a smile, we’re committed to keeping your energy optimisation running smoothly, day and night.

Make informed decisions
Upgrade your building’s BEMSReduce energy consumptionSave on energy costsMake informed decisionsFully managed service
About Us

The UK's largest independent BMS company

At BMSI, we put our people first. We believe that building a great team is the key to success and what ensures our customer’s satisfaction. Spread across the UK, our talented and experienced team are joined in their efforts to delivering success for our clients.

The UK's largest independent BMS company

Why Choose Us

Tailored Solutions

There is no such thing as a standard BEMS package. An individual approach is needed for each design, installation and support. We work closely with your team to understand your needs and objectives and provide a solution tailored to you.

Decades of experience

As the largest independent BEMS company in the UK, and with a team of over 180 experts including 5 directors with over 30 years of industry experience each, we use our expertise to deliver solutions that contribute to your organisation’s future success.

Industry-leading tech

At the core of our solution is our proprietary BEMS technology platform, Sustain Energy Platform. With real-time and historical access to energy, BEMS and environmental data, you have all of the information you need at your fingertips to make informed decisions about your energy usage.

Around the clock support

Our dedicated team of experts are on-hand to support you 24/7, 365 days a year. Enjoy the peace of mind that comes with knowing your building’s management system will be taken care of if needed.

National coverage

Our installation and support teams cover the entire UK. For businesses with multiple sites, this means we can scale and grow with your business, with the added benefit of accessible support anywhere, whenever you need it.

Practise what we preach

We don’t just talk the talk, we walk the walk too. We are committed to becoming net-zero by 2050. However, net zero is only one part of our sustainability commitments. We also invest in the development of our people, local areas and charitable causes.

Take charge of your building today

Get in touch with our team today to learn more about how BMSI can help your building on its path to sustainability.

Life at BMSI
Blog

Recent News

5 min read
February 19, 2026

Why the E60+ Partnership is an edie Awards Finalist

We have always maintained that while the most effective path to a low carbon future is paved with data, it is navigated through partnership. Setting ambitious net zero goals is a vital first step. 
5 min read
November 21, 2025

A Practical Roadmap to Net-Zero with BMS

In the management of large buildings, including office complexes, data centres, hospitals, or university campuses, it’s common to rely on fixed schedules for heating, cooling, and lighting.
5 min read
November 20, 2025

The Top 5 Energy-Wasting Culprits in Large Buildings (and How Your BMS Can Find Them)

In the push towards net-zero and operational excellence, building managers often focus on major systems. Significant energy waste in large commercial environments, including office complexes.