EPC Consultancy in Action: How Businesses Unlock Real Energy Savings in the UK
Energy efficiency has become a defining factor for UK businesses, shaping not just operational budgets but also compliance and reputation. Rising energy costs, strict regulations, and stakeholder expectations for sustainability are driving organisations to find practical solutions.
At Tandem Energy, we combine in-depth commercial EPC consultancy with actionable strategies that go beyond compliance. Our case studies demonstrate the measurable benefits of working with an experienced partner, and this example with Company X highlights exactly how targeted advice and implementation support led to a 30% reduction in annual energy bills.
This commercial EPC case study UK provides a clear, evidence-backed picture of the process, from initial assessment to long-term impact.
Why EPCs Are Critical for UK Businesses
An Energy Performance Certificate (EPC) provides a standardised rating for a building’s energy efficiency. For commercial premises, EPCs are required whenever a building is constructed, sold, or let. The rating runs from A (most efficient) to G (least efficient).
But the implications go further than compliance. Under the Minimum Energy Efficiency Standards (MEES), landlords cannot grant a new lease for properties with an EPC rating of F or G unless specific exemptions apply. This regulation has already reshaped property management and will continue tightening in the years ahead.
For business owners, this means:- Meeting legal obligations under UK law.
- Avoiding penalties and protecting property value.
- Unlocking cost savings through efficiency improvements.
- Demonstrating environmental responsibility to customers, employees, and investors.
When Company X approached Tandem Energy, their EPC rating flagged serious inefficiencies. Their challenge wasn’t just compliance—it was financial sustainability.
Company X’s Baseline: Where We Started
At the start of our engagement, Company X faced rising and unpredictable energy bills. Their building’s EPC rating was low, reflecting outdated systems and missed opportunities.
Key issues identified included:- Old fluorescent lighting and minimal controls.
- HVAC units running inefficiently with no smart optimisation.
- Poor insulation in certain areas, leading to heat loss.
- Lack of visibility into usage patterns, making management reactive rather than proactive.
Staff also experienced inconsistent comfort levels, with some areas overheating while others remained cold. This created workplace frustration and affected productivity.
xThis was the baseline for our EPC case study, and it presented a strong opportunity for transformational change.
Step One: Comprehensive EPC Assessment
The starting point was a detailed commercial EPC assessment carried out by our qualified assessors. At Tandem Energy, we approach EPCs not just as certificates but as diagnostic tools.
Methodology: How We Gather Data
Our methodology combines on-site inspection with advanced energy modelling:- Building fabric analysis: Insulation, glazing, and construction materials.
- System efficiency checks: Heating, cooling, ventilation, and hot water.
- Lighting technology review: Fixture type, control systems, and coverage.
- Utility data collection: Historical billing records to map consumption.
- Occupancy patterns: Understanding how the building is used daily.
We use approved software tools to model energy demand under standardised conditions, ensuring comparability and accuracy.
For Company X, this highlighted both “quick wins” (like lighting upgrades) and longer-term investments (like building envelope improvements).
Step Two: Tailored Consultancy Recommendations
With the EPC data in hand, our consultants developed a tailored roadmap. Unlike generic advice, this plan prioritised measures by cost-effectiveness, ease of implementation, and operational impact.
Key Recommendations Included:- Replace fluorescent fixtures with LEDs.
- Introduce motion sensors in low-use areas.
- Expected saving: 60% on lighting energy.
- HVAC Optimisation
- Retrofit with variable speed drives.
- Install centralised controls for consistent performance.
- Expected saving: 20–25% on heating and cooling.
- Improved Insulation & Draught Proofing
- Seal gaps in window frames and wall junctions.
- Add insulation to poorly performing roof sections.
- Expected saving: 10% on heating.
- Smart Monitoring Systems
- Install sub-meters and dashboard tracking.
- Provide management with real-time visibility.
- Behavioural Engagement
- Create awareness campaigns for staff.
- Encourage simple actions like shutting down equipment.
Step Three: Implementation with Expert Support
Consultancy is only valuable when backed by delivery. At Tandem Energy, we supported Company X through the implementation phase.
- For the LED upgrade, we oversaw procurement to ensure high-quality fixtures and compliance with lighting standards.
- During HVAC improvements, we worked with contractors to minimise disruption, scheduling works out of hours.
- Our team provided ongoing monitoring in the first three months, ensuring systems were optimised in practice, not just on paper.
This hands-on approach ensured that the recommendations translated into real-world performance improvements.
Before-and-After Data: Evidence of Savings
Six months after implementation, we compared energy data with the baseline:- 30% reduction in total energy bills.
- EPC rating improved by two bands, raising property value and compliance security.
- Comfort levels improved, with balanced indoor temperatures reported by staff.
- Carbon footprint reduced, supporting corporate social responsibility commitments.
These results underline the importance of evidence-led consultancy. Rather than vague estimates, Company X had clear, measurable outcomes.
Testimonial from Company X
“Partnering with Tandem Energy gave us clarity and confidence. The EPC process identified issues we hadn’t considered, and the consultancy roadmap made improvements achievable. Today, our energy bills are down by 30%, and our team works in a more comfortable environment. The process has exceeded our expectations.”
The UK EPC Landscape: Regulations & Future Outlook
To appreciate the wider significance of this EPC case study, it’s important to look at the regulatory context.
- MEES Regulations: Since 2018, landlords cannot lease commercial properties with an EPC rating of F or G. By 2030, the government has proposed raising the minimum standard to B.
- Carbon Reduction Goals: The UK’s net-zero target by 2050 means stricter building energy rules will be introduced.
- Corporate Reporting: Large businesses are expected to disclose energy usage and efficiency measures, further incentivising EPC improvements.
For many organisations, the time to act is now. By investing early in improvements, businesses not only comply but also gain a competitive edge.
At Tandem Energy, we help clients navigate these changes with confidence.
Beyond Compliance: Long-Term Future-Proofing
An EPC is a snapshot, but energy efficiency is an ongoing journey. For Company X, the consultancy didn’t stop at achieving savings. We worked with them to explore future-proofing strategies, including:
- On-site renewable options such as solar PV integration.
- Battery storage feasibility studies to maximise self-consumption.
- Green finance opportunities for funding efficiency upgrades.
- Long-term monitoring contracts to ensure performance stays optimised.
These discussions align EPC consultancy with broader corporate sustainability strategies, ensuring that improvements continue to deliver value year after year.
Why Work with Tandem Energy?
Our approach is grounded in expertise, practical delivery, and ongoing support. Clients come to us not just for certificates but for long-term energy solutions.
- Qualified assessors with in-depth technical knowledge.
- Consultants who translate EPC data into actionable insights.
- A partner committed to both compliance and cost savings.
- Access to a team passionate about building a sustainable UK business sector.
Conclusion
The story of Company X demonstrates how a tailored commercial EPC consultancy can transform building performance. By starting with a detailed EPC, developing clear recommendations, and supporting implementation, Tandem Energy helped deliver a 30% reduction in energy bills and a significantly improved EPC rating.
For UK businesses navigating rising energy costs and tightening regulations, the lesson is clear: EPCs are not just paperwork—they are a roadmap for resilience, sustainability, and savings. To explore how our consultancy can support your organisation, visit our services or learn more about us.