Solar Feasibility Study Checklist for Industrial and Utility-Scale Projects
Introduction
Developing a successful solar power project requires more than selecting suitable solar panels and estimating the available sunlight. Whether the project involves a rooftop installation for an industrial facility, a ground-mounted solar power plant, or a large utility-scale solar project, a comprehensive feasibility assessment is essential before making significant investments.
A solar feasibility study evaluates the technical, commercial, financial and regulatory aspects of a proposed project. It helps developers, industrial consumers, EPC contractors and investors understand whether a project is practical, economically viable and suitable for implementation.
However, important information can be overlooked during the initial planning stage. Incomplete site data, inaccurate energy yield estimates, grid connectivity constraints and underestimated project costs may affect project economics and implementation schedules.
This guide provides a practical solar feasibility study checklist for industrial and utility-scale projects, helping project owners identify critical requirements before proceeding to detailed engineering and project development.
1. Define the Solar Project Requirements
The first step is to establish the project's objectives, capacity requirements and implementation boundaries.
Use the following checklist:
Identify the project type: industrial rooftop, captive solar, open-access solar, ground-mounted or utility-scale.
Define the proposed installed capacity in kWp or MWp.
Determine whether the project will be grid-connected, off-grid or integrated with battery energy storage.
Identify the intended use of electricity, including captive consumption, third-party sale or grid export.
Collect historical electricity consumption and electricity bills, where applicable.
Define the expected project life, implementation schedule and investment budget.
Identify the project owner, developer, EPC contractor and other key stakeholders.
For industrial projects, electricity demand profiles and existing electrical infrastructure are particularly important. For utility-scale projects, land availability, evacuation infrastructure, power purchase arrangements and applicable grid requirements may have a greater influence on project viability.
Clearly defined project objectives provide the foundation for the remaining feasibility assessment.
2. Assess Site Suitability and Land Availability
Site assessment is one of the most important components of solar project development. A location with good solar irradiation may still be unsuitable because of terrain conditions, shading, land constraints or electrical connectivity limitations.
Site assessment checklist
Confirm land ownership, lease arrangements or legal rights to use the site.
Verify the available land area and its suitability for the proposed capacity.
Review topographical surveys, site boundaries and elevation differences.
Assess terrain slope, soil conditions and drainage requirements.
Identify potential shading from buildings, trees, nearby structures or terrain.
Evaluate access roads for construction equipment and maintenance vehicles.
Check flood exposure, waterlogging, erosion and other environmental risks.
Identify existing underground utilities, overhead lines and physical obstructions.
Review any restrictions relating to land use, environmental approvals or protected areas.
Industrial rooftop projects require additional checks for roof condition, structural capacity, waterproofing, access and fire-safety provisions. Ground-mounted projects may require geotechnical investigations and more detailed terrain analysis.
The outcome should establish whether the site can accommodate the proposed solar capacity without excessive civil works or avoidable development costs.
3. Evaluate Solar Resource and Energy Yield
Solar resource assessment estimates how much solar energy is available at the proposed project location. Energy yield analysis then estimates how much electricity the solar installation can generate under expected operating conditions.
Solar resource checklist
Obtain location-specific solar irradiation data from credible sources.
Review global horizontal irradiation (GHI) and other relevant solar resource parameters.
Evaluate direct and diffuse irradiation where required by the modelling approach.
Determine the appropriate module tilt and orientation.
Assess seasonal and monthly variations in solar availability.
Account for ambient temperature and module temperature effects.
Estimate shading, soiling, mismatch, wiring and inverter losses.
Evaluate system availability and expected degradation over the project life.
Prepare monthly and annual energy generation estimates.
Review specific yield and performance ratio assumptions.
Solar simulation tools can support energy yield estimation and help compare alternative configurations. However, the quality of the results depends on the accuracy of input data, system design assumptions and loss calculations.
For industrial consumers, the estimated generation profile should also be compared with the facility's electricity demand. For utility-scale projects, energy yield estimates should support revenue projections, contractual commitments and investment analysis.
4. Review Electrical Design and Grid Connectivity
A technically suitable solar site must also support safe and reliable electrical integration. Grid connectivity can be a major development constraint, particularly for large projects.
Electrical feasibility checklist
Identify the proposed point of interconnection.
Review the existing electrical infrastructure and available grid capacity.
Assess the need for transformers, switchgear, protection systems and metering.
Evaluate cable routes, cable sizing requirements and electrical losses.
Review evacuation line requirements and potential substation modifications.
Identify applicable grid codes and utility interconnection requirements.
Assess power quality, protection coordination and reactive power requirements.
Determine whether battery energy storage is necessary for the intended application.
Identify the likely scope of grid studies, approvals and interconnection works.
For utility-scale solar developments, transmission availability, evacuation distance and network constraints may materially affect project cost and commissioning schedules.
For industrial installations, the assessment should consider integration with the existing distribution system, operational safety, load management and any requirements for export limitation or backup power.
Grid connectivity assumptions should be validated with the relevant utility or transmission authority before the project advances to major procurement decisions.
5. Estimate Project CAPEX and OPEX
A realistic financial assessment depends on identifying the full project cost rather than focusing only on the price of solar modules.
Capital expenditure checklist
Solar PV modules and mounting structures.
Inverters, transformers and electrical balance-of-system equipment.
DC and AC cabling, switchgear and protection systems.
Civil works, foundations, roads, drainage and site development.
Grid interconnection and power evacuation infrastructure.
Engineering, procurement and construction management costs.
Land acquisition or leasing costs.
Surveys, investigations, approvals and testing.
Battery storage, if applicable.
Contingency allowances and applicable taxes.
Operating expenditure checklist
Routine inspection and preventive maintenance.
Module cleaning and water requirements.
Equipment replacement and major maintenance.
Site security, insurance and administrative expenses.
Land lease payments and grid-related charges.
Monitoring systems and plant performance management.
Cost estimates should be based on the project's location, capacity, technical configuration and implementation requirements. Clearly documenting assumptions makes it easier to compare alternatives and evaluate bids from EPC contractors.
6. Evaluate Financial Viability
The financial assessment determines whether the expected project benefits justify the investment.
For captive industrial projects, the analysis may focus on avoided electricity costs, demand patterns and applicable open-access charges. For utility-scale projects, revenue may depend on power purchase agreements, electricity sale arrangements or other permitted market mechanisms.
Financial assessment checklist
Estimate annual electricity generation and usable energy.
Determine the applicable electricity tariff or expected selling price.
Estimate annual revenue or electricity cost savings.
Include project CAPEX, OPEX, financing costs and taxes.
Assess debt and equity requirements.
Calculate the payback period.
Evaluate net present value (NPV) and internal rate of return (IRR), where appropriate.
Conduct sensitivity analysis for capital costs, energy yield, tariffs and interest rates.
Assess downside scenarios, including delays and lower-than-expected generation.
Verify assumptions against applicable regulations and contractual terms.
Financial indicators should be interpreted together rather than individually. A short payback period, for example, does not automatically establish that a project is financially robust.
A bankable assessment should make assumptions transparent and evaluate how changes in key variables affect project returns.
7. Check Regulatory and Environmental Requirements
Approvals and compliance requirements vary according to project location, capacity, ownership model and grid connection arrangement.
Before proceeding, verify the following:
Land-use permissions and site-related approvals.
Applicable environmental and local authority requirements.
Electrical safety and statutory inspection requirements.
Grid connectivity and evacuation approvals.
Relevant utility or transmission authority requirements.
Applicable policies for captive consumption, open access or electricity sales.
Building permissions and structural safety requirements for rooftop installations.
Water availability and waste management requirements, where relevant.
Any project-specific requirements associated with financing or power purchase agreements.
Developers should prepare an approval register identifying the responsible authority, required documentation, expected lead time and current status of each approval.
Regulatory assumptions should be checked against current official requirements before investment approval.
8. Identify Technical and Project Implementation Risks
A feasibility study should not only establish what is possible; it should also identify conditions that could affect cost, schedule, safety or performance.
Common risks include:
Inaccurate solar resource or generation assumptions.
Land ownership disputes or delays in site access.
Weak soil conditions or unexpected civil works.
Grid evacuation constraints.
Delays in equipment procurement or statutory approvals.
Variations in module, inverter or other equipment prices.
Inadequate drainage or extreme weather exposure.
Lower-than-expected plant availability.
Changes in electricity tariffs, contractual terms or financing costs.
Recommended action: Maintain a risk register covering each risk, its potential impact, likelihood, mitigation measures and responsible person. High-priority risks should be addressed before major financial commitments are made.
9. Prepare the Solar Feasibility Study Report
After completing the assessments, consolidate the findings into a structured report that supports investment and project development decisions.
A typical solar feasibility report may include:
Executive summary and project objectives.
Project location, capacity and proposed configuration.
Site assessment and land suitability.
Solar resource assessment and energy yield analysis.
Preliminary technical configuration.
Electrical design basis and grid connectivity assessment.
CAPEX and OPEX estimates.
Financial analysis and sensitivity scenarios.
Regulatory and environmental assessment.
Risk register and mitigation measures.
Preliminary implementation schedule.
Conclusions and recommendations for the next project stage.
Where the project requires greater engineering detail, the feasibility findings can provide the basis for a Detailed Project Report (DPR), tender specifications, EPC procurement and subsequent detailed engineering.
10. Final Go/No-Go Checklist
Before approving further project development, confirm that the following critical questions have been answered:
Is the proposed site legally available and technically suitable?
Is the solar resource assessment based on credible data?
Are energy yield estimates supported by reasonable assumptions?
Is grid connectivity technically feasible?
Are project CAPEX and OPEX estimates sufficiently comprehensive?
Does the financial model demonstrate acceptable returns under realistic scenarios?
Have major regulatory requirements and approval risks been identified?
Are the project schedule, procurement strategy and implementation risks understood?
Is the next stage of engineering and project development clearly defined?
If critical information remains unavailable, the project team should identify the required investigations and update the feasibility assessment before making a final investment decision.
Conclusion
A comprehensive solar feasibility study checklist helps project developers evaluate site conditions, solar resource, energy generation, electrical connectivity, project costs, financial returns and implementation risks before committing substantial capital.
For industrial and utility-scale solar projects, early identification of technical and commercial constraints can reduce uncertainty, improve planning and support more informed investment decisions.
AlgEnergy Engineering Consultancy Services supports solar project developers, industrial consumers, EPC contractors and investors with feasibility studies, technical assessments, project planning and engineering consultancy services.
Read our detailed guide: Explore the Solar Feasibility Study: Complete Process from Site Assessment to DPR to understand the complete feasibility process, from initial site evaluation to preparation of the Detailed Project Report.
To discuss your proposed solar project, visit the AlgEnergy Engineering Consultancy Services website.
