Managing commissioning across scattered files and tools creates unnecessary technical risk and delays
No single source of truth
With documentation scattered across emails and folders, it’s difficult for EPCs, investors, and O&M teams to stay aligned.
Unclear ownership of issues
Managing punch lists manually leads to missed deadlines and lack of accountability for resolving critical site defects.
Limited readiness visibility
Without a structured environment, tracking progress toward PAC/FAC milestones becomes a guessing game instead of a data-driven process.
Late-stage technical risk
A lack of real-time oversight means technical problems often surface only at the final handover, leading to costly delays.
How does it work?
Comprehensive commissioning process
Solar Spy structures the entire commissioning process. From the first audits and performance checks, through PAC, and final FAC acceptance.
PAC Phase
PAC, or Preliminary Acceptance Certificate, confirms that the installation is ready to be handed over after the main works and tests have been completed.
Disconnection and configuration audit
Verification of the correct connection of all key installation components.
Initial performance study
Assessment of installation performance and identification of energy losses at an early stage.
Pre-PAC inspection
Detection of defects that should be removed before the official acceptance.
Official PAC inspection
Confirmation of workmanship quality and compliance with acceptance requirements.
Final PAC performance study
Summary of results and preparation of the project for completion of the PAC stage.
FAC Phase
FAC, or Final Acceptance Certificate, closes the commissioning process after the monitoring period and confirms that the facility is fully ready for operation.
PAC–FAC period monitoring
Ongoing monitoring of the installation’s operation and detection of irregularities after preliminary acceptance.
Internal inspection, if required by the schedule
Additional technical inspection performed before final acceptance.
Official FAC inspection
Confirmation of the installation’s quality before the final handover of the facility.
Final FAC performance study
Final verification of the farm’s performance and readiness for operation.
Download the step-by-step commissioning support brochure
Learn how to streamline the commissioning process and avoid delays during PAC & FAC acceptance.
Full visibility into the commissioning process
Monitor progress in real time and manage every stage of the photovoltaic farm acceptance process.
Process progress in a single view
Stage statuses, current progress, and key process milestones are visible without switching between spreadsheets and messages.
FAC / PAC readiness
The team can see which conditions have been met and which items still need to be completed before the next acceptance stage.
Documentation readiness
Missing documents, required attachments, and the overall documentation readiness of the project are visible in one place.
Critical issue tracking
Open items, priorities, and corrective actions are organized within a single process structure.
What do you gain?
Less chaos, better control over the process, and greater project readiness for acceptance
Process control
Statuses, stages, dependencies, and decisions in one place.
Documentation control
Full visibility into document completeness and acceptance requirements.
Fewer risks and delays
Faster detection of missing items, gaps, and critical points.
Better readiness for PAC and FAC
Monitoring of tests, requirements, and readiness for the next stages.
Collaboration across all parties
One process structure for the investor, EPC, asset manager, and advisors.
Greater predictability of acceptance
Less chaos at the end of the process, more control earlier on.