Introduction
Once engineering design, planning and procurement have been completed, the project moves into the construction phase.
Commercial solar canopy construction differs significantly from rooftop solar installations. It combines civil engineering, structural steel erection and electrical installation, all while maintaining a safe environment for employees, visitors and the public.
Careful planning, clear communication and effective project management ensure the works are delivered safely, efficiently and with minimal disruption to the client’s operations.
Pre-Construction Handover
Before construction begins, the project team undertakes a formal handover from the design phase.
This includes reviewing:
- Engineering drawings
- Construction programme
- Health & Safety documentation
- Construction Phase Plan
- Risk Assessments and Method Statements (RAMS)
- Traffic Management Plan
- Temporary works
- Site Security
- Delivery programme
- Client communication procedures
This ensures all stakeholders understand the construction sequence before work starts on site.
Site Establishment
The first activity on site is establishing a safe working environment.
Typical activities include:
- Site compound installation
- Temporary fencing
- Welfare facilities
- Site signage
- Material storage areas
- Delivery routes
- Pedestrian segregation
- Temporary traffic management
The objective is to ensure construction activities can proceed safely while allowing the client’s operations to continue.
Setting Out
Before excavation begins, the canopy is accurately set out using engineering survey equipment.
This ensures:
- Foundation positions are accurate.
- Column centres align correctly.
- Parking bays remain compliant.
- Vehicle movements are maintained.
- Drainage interfaces are coordinated.
Accurate setting out is critical to the successful erection of the steel structure.
Foundation Construction
Foundation construction begins once the setting out has been approved.
Works may include:
- Trial excavations
- Foundation excavation
- Reinforcement installation
- Holding-down bolts
- Piling
- Concrete placement
- Concrete testing
- Backfilling
Foundation design is determined by the structural engineer and ground investigation findings.
Expert Insight
No two canopy foundations are identical. Foundation sizes are determined by structural loading, wind uplift, ground bearing capacity and site-specific ground conditions identified during the pre-construction phase.
Underground Services
During foundation construction, underground infrastructure is installed.
Typical works include:
- Electrical ducting
- Cable trenches
- Communications ducts
- Earthing systems
- Drainage connections
Completing these works early reduces disruption during the later construction stages.
Structural Steel Installation
Once the foundations have achieved their design strength, installation of the structural steelwork begins.
The sequence typically includes:
- Columns
- Beams
- Bracing
- Roof members
- Secondary steelwork
All lifting operations are completed using approved lifting plans and competent personnel.
Every connection is inspected before progressing to the next stage.
Roof Installation
Following completion of the structural frame, the roof system is installed.
This includes:
- Roof rails
- PV mounting systems
- Rainwater gutters
- Downpipes
- Cable containment
The roof is inspected before the solar modules are installed.
Solar PV Installation
Once the structure has been completed, installation of the commercial solar PV system begins.
Typical activities include:
- Mounting PV modules
- DC cable installation
- String testing
- Cable management
- DC isolators
Every installation follows the approved engineering drawings and manufacturer’s recommendations.
Construction Program Example
The below image is an example of a construction program of a 215 KWp Solar Canopy showing a construction sequence timeline broken into the following sections: Site Establishment, Surveys & Setting Out, Foundations, Drainage, Ducts & Service Trenches, Structural Steel Installation, Gutters & Rainwater Systems, PV Module Installation, Electrical Installation, Monitoring & Communications, Testing & Commissioning, Site Reinstatement & Client Handover.
Electrical Installation
The electrical installation integrates the solar canopy with the building.
Typical works include:
- Inverter installation
- AC switchgear
- Monitoring equipment
- Cable termination
- Building connection
- Main LV distribution board
- Earthing
- Protection systems
Where possible, electrical shutdowns are planned outside normal operating hours to minimise disruption.
Working Around Live Sites
Many commercial solar canopies are constructed within operational facilities.
Energy Gain regularly delivers projects at:
- Manufacturing facilities
- Leisure centres
- Hospitals
- Distribution centres
- Car dealerships
- Schools
- Commercial offices
Construction programmes are carefully phased to maintain safe access for staff, customers and visitors throughout the works.
Quality Assurance
Quality inspections take place throughout construction.
Typical inspections include:
- Foundation inspections
- Steelwork inspections
- Bolt torque checks
- PV module installation
- Electrical testing
- Cable management
- Drainage
- Finishing works
Inspection records form part of the final project handover documentation.
Health & Safety During Construction
Safety remains the highest priority throughout construction.
Daily activities include:
- Site inductions
- Daily briefings
- Toolbox talks
- Permit-to-work systems
- Lifting plan reviews
- Working at height controls
- Temporary traffic management
- Fire prevention measures
All works are completed in accordance with the Construction Phase Plan and current legislation.
Environmental Management
Environmental controls remain in place throughout construction.
Typical measures include:
- Dust suppression
- Noise management
- Waste segregation
- Recycling
- Pollution prevention
- Spill response
- Surface water protection
The objective is to minimise environmental impact throughout the project.
Communication
Good communication keeps projects running smoothly.
Regular progress meetings review:
- Construction progress
- Programme
- Health & Safety
- Deliveries
- Client requirements
- Planned outages
- Upcoming activities
Clients receive regular updates throughout construction.
Project Insight
A recent commercial solar canopy project was constructed at a live leisure centre with more than 500 daily visitors. The construction programme was phased to maintain public access while foundations, structural steelwork and electrical infrastructure were installed. Temporary traffic management, pedestrian segregation and regular stakeholder meetings ensured the works were completed safely minimising disruption to the leisure centre.
FAQs
How long does construction take?
Construction duration depends on canopy size, ground conditions and site complexity. A typical commercial solar canopy project is completed over several weeks following completion of the pre-construction phase.
Can the car park remain operational?
Yes. Most projects are delivered in carefully planned phases, allowing sections of the car park to remain open throughout construction.
Will construction affect our business?
Construction programmes are developed around the client’s operations wherever possible to minimise disruption.
Are weekend or out-of-hours works available?
Yes. Where operational requirements demand it, Energy Gain can programme certain activities outside normal working hours.
Who manages the construction programme?
A dedicated Project Manager coordinates all construction activities and acts as the client’s primary point of contact throughout the project.
Expert Insight
The quality of a commercial solar canopy is determined not only by the engineering design but also by the way it is constructed. Effective project management, robust health and safety procedures, quality assurance and clear communication ensure every installation is delivered safely, efficiently and to the highest engineering standards. As a Commercial Solar EPC, Energy Gain manages every stage of construction, providing clients with a single point of responsibility from initial engineering through to commissioning and long-term optimisation.
Lesson Summaries:
- Lesson 1: What are commercial solar canopies?
- Lesson 2: Is your site suitable for a commercial solar canopy?
- Lesson 3: Building the financial business case for a commercial solar canopy
- Lesson 4: Pre-construction planning
- Lesson 5: Construction & installation
- Lesson 6: Commissioning, testing, and handover
Related Services:
Energy Gain solar canopy service
Solar canopy cost and savings calculator
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