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Case Studies

Case Study: Sun Mark

Delivered Up to 58,000 kWh of Clean Power For Operational Efficiency

Sun Mark Ltd mounted a 51.6 kWp solar PV system. The project minimises grid dependency, standardises energy prices and shows great interest in sustainability

£260K

Lifetime client savings

51.6 KW

System Size installed

320K Kg

Co2 Saved

120

Panels installed

CLIENT

Sun Mark Ltd, in Greenford, Middlesex (UB6 8UH), required sustainable and cost efficient energy solutions to facilitate its operations. As energy prices continued to rise and more and more people wanted to reduce carbon, the business sought to future-proof its facility, reduce its energy expenses, and put action with visible impact on its environmental obligations

The Project

Solar4Good designed and installed a 51.6 kWp solar PV system to serve the energy demands of the site, as well as, to minimize grid dependency. The solution was designed in such a way that it maximised the roof space and ensured long-term performance, minimising interference with day-to-day operations.

The technical scope included:

120 × TRINA Vertex S 430W solar panels (51.6 kWp total capacity)
1 × Solis 50kW 3-Phase Inverter
Roof Pitch: 5° (South facing)
Flat roof mounting system designed for durability and safety
Total Project Cost: £54,000

The Solution

Solar4Good devised and implemented a complete end-to-end service, starting with budgeting, planning and design up to installation and commissioning.

Key aspects included:

Optimised Layout: Panels are installed to maximise the south-facing roof so that the generation of energy becomes efficient.
High-quality Material: TRINA Vertex S high-efficiency panels and a Solis 50kW inverter to ensure long-term security.
Future-Ready Design: System that will be scalable to a possible integration of the batteries in the future.
Safety/ Compliance: 100 per cent compliant with the electrical and building statutes in the UK, providing structural stability and tranquility.

The Result

The solar PV system is now producing between 55,000- 58,000 kWh of energy per year, which is over 40 percent self-sufficient to the business.Environmental Impact:

Annual CO₂ savings: ~12,000 – 13,000 kg
Lifetime CO₂ offset: ~300,000 – 320,000 kg
Equivalent to planting 12,000 – 13,000 trees over the system’s lifetime

Financial Impact:

System cost: £54,000
Lifetime energy savings (25 years): £240,000 – £260,000 £255,000
Average yearly savings: £9,600 – £10,400
ROI / Payback period: 5 – 5.5 years

Client Benefits:

Significant protection against rising UK energy tariffs
Strong environmental contribution towards corporate sustainability goals
Increased business resilience and reduced operational costs
Enhanced reputation with customers and stakeholders through visible green commitment

Financial Impact

Lifetime Energy Saving

£260,000

System Cost

£54,000

Estimated ROI

5–6 Years

Average Annual Savings

£10,400

Average Monthly Savings

£867

Average Weekly Savings

£202

Energy Production

Annual Energy Generation

58,000 kWh

Specific Yield

1,120 kWh / kWp

Self Sufficiency

40% Years

Environmental Impact

Lifetime Carbon Offset

320,000 kg CO2

Equivalent trees planted

13,000

Average Carbon offset Yearly

13,000 kg CO2

Why choose Solar4Good

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PROPERTY & HOME

with MARTIN ROBERTS

British television presenter, property expert, author, investor and radio host best known for presenting the BBC property auction show Homes Under the Hammer.