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Commercial Solar Retrofit. Power Your Business.
Solar panel installation for existing commercial and industrial buildings across the UK, designed around your business’s energy needs.
Make Your Existing Building Work Harder
Commercial solar retrofit means installing Solar PV on an existing building, turning available roof space into a source of electricity for your business.
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Square 4 Solar designs, installs and maintains commercial and industrial solar systems across the UK. From warehouses and manufacturing facilities to retail premises and offices, we tailor each system to your building and electricity demand.
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With in-house design specialists and dedicated project management, we guide you from the initial proposal through to installation and handover, with ongoing maintenance to support long-term performance.
Generate Your Own Electricity
Turn existing roof space into a source of solar electricity, with a system designed around your building and business energy demand.
Reduce Grid Reliance
Use the electricity your solar panels generate on site, reducing the amount your business needs to purchase from the grid.
Support Your Carbon Goals
Generate renewable electricity at your premises and support your business’s wider carbon reduction and sustainability objectives.
Designed Around Your Building
Your building and electricity demand shape every part of your solar retrofit. Our in-house design specialists develop a tailored Solar PV layout, supported by generation forecasts and a technical site assessment.
We give you a clear picture of the proposed system and its potential performance before installation.
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Detailed roof layouts and 3D modelling
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Solar electricity generation forecasts
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Financial return projections
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Dedicated design support
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Site-specific installation and safety considerations
Your Solar Retrofit Journey
1
Your Requirements
We discuss your premises, electricity demand and what you want to achieve with solar.
2
Your Solar Proposal
Our team prepares an initial desktop proposal and walks you through it in a Teams meeting.
3
Technical Site Visit
We visit your premises to assess site conditions and check the proposed design against your building.
4
Project Agreement
We refine the design, agree the project scope and hand over to our operations and contract management team.
5
Solar Installation
Your contract manager coordinates with your site to deliver the solar installation.
6
Checks & Handover
We carry out a final internal quality inspection and hand over your system, with ongoing maintenance available.
Commercial solar retrofit means installing solar panels on an existing commercial or industrial building. It turns available roof space into a source of electricity for your business, helping you generate power for use on site.
Suitability depends on your roof, available space, shading and electricity demand. We begin with a desktop assessment, followed by a technical site visit to check the proposed solar installation against your building and its requirements.
Our in-house design specialists tailor your solar PV system to your building and electricity demand. Roof layouts, generation forecasts and financial return projections help you understand the proposed system and its potential performance before installation.
We discuss your requirements, prepare an initial solar proposal and explain it during a Teams meeting. If you decide to proceed, we arrange a technical site visit before refining the design and agreeing your project scope.
Project timescales depend on your building, the system design and any electricity network approvals required. We explain the proposed programme as these details are confirmed, with a dedicated contract manager coordinating installation with your site team.
Yes. Our in-house maintenance team offers inspections, system testing, thermal imaging, performance assessments and solar panel cleaning. Clear reporting helps you understand your system’s condition and identify any work needed to support its long-term performance.
Solar Retrofit FAQs
Planning solar panels for an existing commercial building? Explore the key questions about roof suitability, system design, installation and maintenance, so you know what to expect before taking the next step.
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Square 4 Solar designs commercial solar PV systems around your premises and electricity demand. Our in-house specialists assess your roof space and prepare layouts, generation forecasts and financial projections to help you understand your options.
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From your initial enquiry through to installation and handover, our team guides you through the process. Dedicated contract management, internal quality checks and ongoing maintenance provide support as your project progresses and once your system is operational.