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Defence.

Renewable Energy Solutions for the UK Defence Estate.

Military sites face a unique challenge. You are responsible for keeping buildings, bases, training facilities, and thousands of service homes running safely and efficiently. Energy security, resilience, and compliance must be guaranteed at all times.
Carbon3 already supports defence partners, delivering solar PV, heat pumps, battery storage, EV charging, and long-term O&M across both large military buildings and Service Family Accommodation.
Our approach is built around the realities of defence estates. We design, install, and maintain systems that strengthen operational resilience, reduce energy costs, and improve comfort in military homes, while following strict security protocols and minimising disruption.
Solar PV system installed on a military site building

Solar PV for military sites.

Large defence buildings consume significant power and often operate around the clock. Solar PV and battery storage offer dependable, predictable energy cost reductions and improved resilience during grid disturbances.
Your budget is better spent on improving national security, so solar savings mean more than just lower operational costs. With energy bills rising, give yourself peace of mind knowing yours are fixed for the next 25-30 years, with a typical ROI of only 3-5 years.
As we’ve worked on live MOD sites, our engineers have the relevant certifications and capabilities to install with no delays or disruptions to site operations.
We design systems that work with your site layout, access restrictions, safety zones, and operational windows. Installations can be phased around training schedules and sensitive infrastructure.
Battery storage system at a defence site providing energy security

Battery Storage for energy security.

Paired with solar PV, not only can battery storage save you money, but it can also give your sites much needed energy security. Given the nature of defence operations, you need to be able to rely on your energy to work around the clock, which is not always the case with the grid.
Battery storage also gives your sites energy independence. You can use your battery to store solar generated energy for when you need it most, which may be at night when they would not be generating. You can also peak shave and load shift to avoid higher grid tariffs.
EV charging points at a military facility

EV charging for military sites.

EV charging supports fleet electrification, staff vehicles, and visitors. You’ll provide an incentive for your service personnel to move to electric vehicles, and you can set user group tariffs to charge your fleet for free.
You’ll be reducing local emissions, and contributing to the wider UK government’s net zero plans. All this at a low cost – the Workplace Charge Scheme grant covers up to 75% of EV charging installation costs.
Renewable energy upgrades at service family accommodation

Renewable energy for military housing.

Your people are working on some of the most important projects in the country. They need to have places they can go home to at night that are comfortable and relatively inexpensive to run. The last thing you want your service personnel to worry about is damp and expensive energy bills.
Carbon3 works across Service Family Accommodation (SFA) and single living accommodation to upgrade homes with low carbon technologies. This includes air source heat pumps, solar PV, battery systems, and electric vehicle chargers.
These upgrades help improve your service homes’ EPC ratings, reduce maintenance issues, and meet your environmental targets. They also improve comfort for military families, who often live in older homes that would benefit greatly from insulation measures, better heating controls, and renewable integration.
We understand the pressures of working in occupied homes, so we reduce disruption with resident communication and engagement.
Public-sector funding supporting renewable energy on defence sites

Funding support for renewable energy.

Under recent announcements, Great British Energy is expanding access to funding for solar projects across the public sector, including military buildings and defence land. According to industry updates, the programme aims to reduce reliance on gas and strengthen energy independence by supporting installations across selected MOD locations.
At Carbon3 we have already delivered projects using GBE funding, and we can support you by keeping installations in line with funding requirements.
Service Family Accommodation may be eligible for future waves of the Warm Homes: Social Housing Fund (WH:SHF) when meeting scheme criteria, which can support ASHPs, solar PV, insulation upgrades, controls, and storage solutions. We work with defence housing partners to build compliant bids, prepare technical packs, and deliver installations that meet reporting requirements.
Engineers installing renewable energy systems on a secure defence site

Security built into delivery.

Your defence sites are not typical construction environments. You need an installation partner who operates with security and safety at top of mind, and understands the need for qualified engineers trained and vetted for sensitive environments.
At Carbon3, we coordinate around restricted zones, vehicle checks, site access rules, and tool control requirements. We also align with military electrical standards and work collaboratively with your estates personnel so projects run with minimal disruption to operations.
Works can be scheduled around training cycles, shift patterns, and accommodation occupancy, reducing interruption to service personnel and families.
We also vet our supply chain regularly, with all of our kit coming from European manufacturers where required.
Maintenance of renewable energy systems at a defence site

Maintenance for defence buildings and housing.

Once you’ve gone through the trouble of installing renewable energy, losing efficiency due to poor aftercare is a nightmare. Fixing faults is more expensive and difficult than preventing them from occurring.
Not only do we offer annual servicing across all renewable energy, we also offer remote monitoring, compliance reporting, and rapid reactive maintenance if needed.
Our operations and maintenance (O&M) team works only on maintenance, not new installations, which gives us the fastest response times in the sector. Engineers are cross-trained across all technologies, and we operate with stocked vans to reduce repeat visits. For housing estates or entire bases, we can deliver fully managed borough-scale O&M.
We can also maintain and integrate legacy equipment, providing a single point of contact for all renewable technologies on site.
Renewable Energy Solutions

Why Choose Carbon3?

Choosing Carbon3 means partnering with a leader in renewable energy services committed to sustainability, innovation, and exceptional customer care.

We keep it in-house.

The Carbon3 team provides a turnkey service from surveys and design through to installation and ongoing management of your renewable technology – all of our labour is directly employed.

We’re serious about your success.

We have decades of industry experience, and we know how to get you the best decarbonisation strategy for your needs.

We’ve taken the hassle out of funding.

With our funding partners, we can help you navigate the best funding options for your business, including competitive PPAs if you don’t have upfront capital.

We’re here to help, every step of the way.

One of our decarbonisation experts will guide you through the process and keep you informed and updated. If you need us, our support lines are also open 24/7.

What our customers say.

We are dedicated to our customers and take pride in the exceptional service we provide. See what some of them have to say about us!
“Carbon3 demonstrated a deep understanding of the security, compliance and operational requirements of our defence estate. Their delivery of solar and energy-resilience upgrades was meticulous, efficient and fully aligned with our long-term sustainability goals. The improvements have strengthened energy security across our sites while reducing running costs. Carbon3 has proven to be a reliable and highly capable partner.”
— Estate Strategy Lead, Defence Infrastructure Organisation

    Key Benefits.

    Secure, sustainable energy provides defence sites with long-term cost control and stronger operational resilience. It also supports government net zero goals while improving living standards across your estates.
    Fix your energy costs for up to 30 years.
    Benefit from energy security across your sites.
    Give your service personnel healthy, warm homes.
    Comply with the government’s net zero goals.
    Incentivise the adoption of electric vehicles.
    Avoid costly grid black and brownouts.

    In need of Renewable Energy
    Service Specialists?

    Discuss energy solutions for defence sites. Speak to the Carbon3 team about strengthening your estate’s energy security, reducing operating costs, and supporting MOD sustainability goals.

    Frequently Asked Questions.

    If you can’t find the answers you need here, please contact our friendly team contact us.
    Will installations disrupt training or operational schedules?
    No. All works are planned around your operational windows. We coordinate with your estates and operations teams to avoid sensitive periods.
    Can renewable systems work with existing generators and critical-load infrastructure?
    Yes. Battery storage and solar can be configured to integrate with existing backup systems. We provide full load analysis and integration design.
    Do engineers require special clearance?
    We follow all MOD access protocols and can supply vetted personnel. Our teams are trained for secure and sensitive environments.
    Can you work in occupied military homes?
    Yes. We have extensive experience delivering renewable upgrades in both occupied and void properties.
    What funding is available?
    Great British Energy supports solar projects for selected defence sites. SHF-style funding may be available for military housing that meets eligibility criteria. We can help with applications and technical submissions.
    Can you provide ongoing maintenance after installation?
    Yes. Carbon3 offers fully managed O&M for estates of any size, covering PV, batteries, ASHPs, and EV charging.

    Services we
    cover.

    Find the best that renewable technology has to offer at Carbon3, and take the guesswork out of decarbonisation with our experienced consulting services.

    Who we work with.

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    Colchester High School for Girls Logo
    Barking & Dagenham Logo
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    Greater London Authority Logo
    Gilberd School Logo
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    In need of Renewable Energy
    Service Specialists?

    Our core services include the design, installation, repair, maintenance, and inspection of various renewable energy systems for both domestic and commercial properties. Our team is trained to use the latest technology, ensuring your home or business is powered efficiently and sustainably.
    Let us handle all your renewable energy needs, so you can rest assured the job will be done right the first time.
    Contact us now to learn more about our services.

    “Exceptional service,
    professional and friendly.”

    Speak to one of our renewable energy professionals and discuss your project today.

    Get in touch.

    Have a chat with us about your decarbonisation needs today.