About Tactical Energy Systems

Building sustainable futures with military-level precision and care.

We are an East Midlands-based energy efficiency retrofit company, providing a whole-house approach to improving energy efficiency.

Established by British Army veteran, Ben Foster MBE, to bring transparency to a complex and confusing industry, and provide honest, transparent and factual advice.

With a no-nonsense approach and absolutely no pushy sales tactics, we’re proud to serve the local community and support efforts to reduce climate impact and control energy spending.

Meet Ben

A veteran of 16 years’ service as an Officer in the British Army’s Corps of Royal Engineers, Ben’s career included managing a wide range of engineering and construction works.

Some of the highlights include: delivering water & sanitation infrastructure support in remote parts of Kenya, supporting the NHS with construction of the Nightingale Hospital in Harrogate, and delivering a range of infrastructure projects across the Middle East. He has experience as both a prime contractor and design engineer for building services in major construction firms.

Specific to domestic retrofit, he’s a qualified and Trustmark accredited retrofit assessor and coordinator, with experience delivering projects around the UK, including in heritage properties.

Now settled in Borrowash renovating his 1960’s semi-detached home, he’s striving to make the house as energy efficient as possible. Embarking on his own retrofit journey spurred Ben into establishing Tactical Energy Systems, to act as a trusted partner to others who seek to do the same – care for our planet and leave a positive legacy for years to come.

  • MSc in Construction Engineering

  • Chartered Member of the Institution of Mechanical Engineers

  • Trustmark accredited retrofit assessor and coordinator

We aim to:

Help you understand

We’re here to help homeowners cut through the sales-bluff that is so common in this sector.

We always give factual information, and pride ourself on our transparency and tailored advice.

Give good advice

We provide advice on the full spectrum of energy efficiency improvements and their suitability for different property and construction types, to ensure measures are always appropriate for your home and installed properly.

Think long term

Looking to the future, we can suggest how to join-up and sequence multiple energy efficiency improvements in a phased plan. This drives efficiency in installation, and ensures improvements complement each other for maximum effect.


Knowledge and confidence.

“Ben is really knowledgeable about the solutions for an old, listed property and we had great confidence in the solutions offered. We had previously had builders who had suggested unsuitable solutions for insulating a period floor, so it was fantastic to find someone who was offering the best, not the cheapest or easiest for the installer.”

– Homeowner + Tactical Energy Systems client

Work With Us

We're always open to work and collaborate with different trades, from plasterers and carpenters to electricians and heating engineers. If you’re an individual or organisation interested in working with Tactical Energy Systems, reach out for a chat.