If you are considering rooftop solar for your business then it is likely that as part of that process, an Engineering, Procurement, and Construction (EPC) contractor will conduct a technical site survey.   Prior to the installation of rooftop solar panels, it is important to undertake a professional site survey to ensure all critical factors have been properly considered.  This step is key to ensuring the long-term success of your solar journey.

Here are the primary factors an EPC contractor may consider:

Site Assessment and Feasibility Analysis

• Solar Irradiance: Measuring the amount of sunlight the rooftop receives is crucial. This involves analysing historical weather data and using tools like pyranometers to measure solar radiation.
• Roof Condition and Structure: The roof’s condition and structural integrity are evaluated to ensure it can support the weight of the solar panels and associated equipment. This includes checking for any damage, leaks, or weaknesses.

Grid Connectivity

• • Proximity to Grid: The distance to the nearest grid connection point is assessed to estimate the cost and feasibility of connecting the rooftop installation to the power grid.
  • Grid Capacity and Stability: Evaluating the local grid’s capacity to handle the additional load from the solar installation is essential. This includes assessing the grid’s stability and the potential need for upgrades.

Environmental and Regulatory Compliance

• Environmental Impact: The potential environmental impact of the rooftop installation is assessed, including effects on local wildlife and vegetation. This may involve conducting environmental impact assessments (EIAs).
• Permits and Approvals: Identifying the necessary planning permissions and regulatory approvals required for the project is a key step.

Technical and Engineering Considerations

• Shading Analysis: Identifying any potential sources of shading, such as nearby trees or buildings, that could affect the solar panels’ performance is crucial. Tools like solar pathfinders are used for this purpose.
• Roof Orientation and Tilt: The orientation and tilt of the roof are analysed to determine the optimal placement of the solar panels for maximum energy production.

• Site Accessibility: Assessing the ease of access to the rooftop for transporting materials and equipment is important. This includes evaluating the availability of cranes or lifts if needed.
• Construction Logistics: Planning the logistics of the construction process, including the staging of materials and equipment, is essential for efficient project execution.

• Cost Estimates: Developing detailed cost estimates for the project, including materials, labour, and potential contingencies, is a critical part of the site survey.
• Return on Investment (ROI): Analysing the potential financial returns of the project, considering factors like energy production, incentives, and payback period.

By thoroughly evaluating these factors during a technical site survey, EPC contractors can ensure that the rooftop solar panel installation is both technically feasible and economically viable, paving the way for a successful renewable energy project.
Information provided in this article does not constitute as professional advice, please contact us at powergreen@renewableconnections.co.uk to find out more.