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6 flats | 5 upgraded | 4 months

Case Study:
Birmingham
Residential Block

Challenge:

6-flat block facing MEES non-compliance, with properties ranging from Band F to Band D. Landlord needed clarity on prioritisation, funding routes, and tenant-friendly delivery.

CASE Approach:

Property-level assessment identified tailored measures for each flat – from mould treatment and ventilation improvements to full insulation and heating upgrades.

We mapped funding eligibility, developed a phased roadmap with flat-by-flat sequencing, and provided structured handover to delivery partners for installation.

Outcome:

5 of 6 flats upgraded to Band C or above using mixed funding. One flat deferred to accommodate tenant preference. Full MEES compliance achieved with zero disruption—all works completed over 4 months while tenants remained in occupancy.

6 flats assessed

5 upgraded to Band C

Part-funded delivery

4 months completion

Case Study:
PV and battery storage installations across four mosques in South Wales

Client Challenge:

  • Multiple occupied community buildings required renewable energy upgrades
  • Sites operated daily with fixed usage patterns, limiting access windows
  • Pre-existing electrical compliance issues increased delivery risk
  • Works needed to be delivered sensitively, without disrupting community use

Strategic Objective:

CEN delivered Solar PV and battery storage installations across four mosques in South Wales, integrating immersion diverter systems to use excess solar for hot water generation. Roof repairs were undertaken where required, ensuring structural integrity prior to installation.

Each site was a live place of worship, requiring careful sequencing around prayer times, community events and cultural sensitivities. In three mosques, we identified significant electrical safety issues (dual supplies, undersized fuses, unsafe wiring), requiring proactive engagement with the National Grid and DNO to rectify before installation.

CASE Methodology

Health & Safety Management

All operatives and subcontractors completed site inductions, with scaffolding inspected and approved, and deliveries carefully managed to maintain a safe, controlled environment.

Each site remained fully operational as a place of worship, requiring careful coordination around prayer times, while critical electrical issues were identified and resolved in collaboration with the National Grid and DNO prior to installation.

Property Assessment

  • Conducted site-by-site technical assessments
  • Designed bespoke PV and battery solutions appropriate to each building type
  • Integrated systems to maximise on-site energy use
  • Identified essential electrical safety remedials required prior to installation

Planning and Sequencing

  • Developed a programme-wide delivery sequence
  • Aligned works with each building’s operational patterns
  • Re-sequenced activity between sites where constraints emerged
  • Maintained progress across the programme despite site-specific delays

Outcome:

Systems were designed for optimal energy use, integrating diversion controls to provide hot water from excess solar generation. Unsafe electrical systems were upgraded, improving both safety and energy efficiency. Roof integrity was restored with minor repairs as part of our package, ensuring long-term resilience.

4 sites assessed

Solar PV with battery storage installed

Programme-managed delivery

Completed within agreed timeframe

This project evidences our expertise in delivering PV solutions in occupied, community-sensitive environments, managing technical and safety challenges proactively while maintaining programme and budget commitments.

Individual Mosque
Summaries

To illustrate the flexibility and care of our delivery approach, the following site summaries highlight how each mosque’s unique needs and constraints were accommodated.

Mosque 1 – Iqra Mosque, Newport

Key Challenges

  • PV cabling was required to run across the most visible face of the building, directly in view of a busy main road.

Approach & Solutions

  • The contours of the building were used to route the cable discreetly, ensuring minimal visual impact.

Outcome

  • An 8.55kW PV system with 20.4kWh battery storage was installed successfully.
  • The finished installation achieved an improved aesthetic, mitigating visual impact on the building.

Mosque 2 – Shahporan Mosque, Newport

Key Challenges

  • Access was restricted due to a narrow alleyway, with no suitable wall space available for installation, and an asbestos roof identified on site.

Approach & Solutions

  • A scaffold-based access solution was implemented, alongside a bespoke mounting frame, while the system was reconfigured and panels relocated to a safer roof area.

Outcome

  • A 17.8kW PV system with 20.4kWh battery storage was successfully installed, ensuring a safe setup while reducing asbestos risk.

Mosque 3 – Dar-ul-Isra Mosque, Cardiff

Key Challenges

  • The project involved a Fatra warm-deck roof requiring approved methods, strict installation tolerances, limited access, and a mid-install inverter relocation.

Approach & Solutions

  • A Fatra-approved setup was implemented with precise installation methods, coordinated scaffold access, and a redesigned system to accommodate client changes.

Outcome

  • A 12.15kW PV system with 20.4kWh battery storage was installed in full compliance, with safe access ensured and the inverter successfully relocated.

Mosque 4 – Madni Masjid Mosque, Cardiff

Key Challenges

  • The project involved complex scaffolding access, a Fatra cold-deck roof requiring approved methods, strict tolerances, and limited electrical access behind a marble wall.

Approach & Solutions

  • A bespoke scaffold bridge was implemented, alongside Fatra-approved installation methods, precise measurements, and a safe alternative electrical connection strategy.

Outcome

  • A 13.5kW PV system with 20.4kWh battery storage was installed in full compliance, with safe access ensured and no impact on the building’s structure or aesthetics.

Case Study:
Solar PV & Battery System Installation at Tredegar Ambulance Station

Challenge:

Design and installation of Solar PV, battery storage, heat pumps, and upgraded electrical systems at a live 24/7 ambulance station.

Required precise planning to avoid disruption and a bespoke mounting system to protect roof integrity.

Health & Safety:

Strict H&S measures implemented, including fall-arrest systems, scaffolding, and controlled site access. Daily coordination ensured zero disruption and zero incidents.

Cost & Programme Control:

Real-time cost tracking and weekly reviews ensured full budget control with no overruns. Structured scheduling and adaptive planning kept delivery on track.

Outcome:

We installed a SolarEdge fireman’s gateway, enabling full system shutdown in emergencies, enhancing safety for staff and first responders. The PV and battery system was integrated with remote monitoring, giving the client real-time visibility of generation and cost savings. 

Minor extension

On-budget delivery

Zero incidents

Energy efficiency gains

What our clients say

“We felt the quote was competitive. They were able to adapt and modify it to meet both our needs and those of our funding partner.”

Mike Clarke

Radyr Tennis Club

“CASE gave us complete clarity on which flats needed what work and how to fund it. The

phased roadmap meant we could plan expenditure properly and keep our tenants

informed throughout.”

Eran Estates

Portfolio Landlord, Birmingham

“Everyone I dealt with at CASE was very lovely, knowledgeable and professional. The team who led the project for my flat, were very kind and patient with me, answering all my many emails!”

Tenant

Birmingham Block of Flats