Services
Quality Assurance and Quality Control
Our quality assurance and quality control (QA/QC) services provide long-term PV profit protection by offering supplier selection, product qualification, and supply contract advisory services from manufacture, to post-shipment inspection, to field inspection of PV and BESS equipment. These services shelter clients from the procurement and commissioning of non-reliable components/devices and protect their long-term PV project profits.
We are fully independent from manufacturers to verify the quality of main project components. Our worldwide services include those for:
- PV modules
- Balance of system (BOS) components (mounting systems, power stations, inverters, transformers, others)
- Battery energy storage system (BESS) equipment.
The Enertis Applus+ team of qualified inspectors, engineers, and Senior Project Managers are based in our headquarter offices in Spain and US; and they collaborate with staff members in international locations, mainly in Asia.
A full range of our quality control and quality assurance services are described below:
Pre-contract
- Technical advisory during negotiations with PV, BESS, and other BOS equipment suppliers
- Assistance with Module Supply Agreement (MSA)
- Vendor qualification:
- Bankability evaluation
- Past performance review
- Quality assessment of product and facilities
- Technical assessment of module specifications and proposed BOM
- Pre-manufacturing BOM validation testing
- ESG and supply chain traceability audit
- Manufacturing start-up oversight
Pre-production
- Pre-production factory audit and BOM validation through laboratory testing
- Factory inspection to identify risks to production
- Sample witnessing
- Golden module generation
Production
- Production supervision
- Pre-shipment inspection
- Container loading supervision
- Factory acceptance test witnessing
Highlighted projects

Portfolio of Casa dos Ventos’ PV projects
Country: Brazil
Capacity: 941 MW (Rio Brilhante (306 MW), Seriemas (291 MW), Babilônia Sul Solar (117 MW), and Babilônia Centro Solar (227 MW) PV plants)
Service(s): Quality Assurance and Quality Control
Client(s): Casa dos Ventos
Enertis Applus+ validated the raw materials – the Bill of Materials (BOM) – for solar PV modules and conducted factory audits to assess the production process and quality management systems and ensure compliance with global standards.
In addition, Enertis Applus+ inspectors oversaw the manufacturing process by conducting comprehensive monitoring of each stage to identify potential defects at an early stage and ensure compliance with international standards and specific client requirements.
Moreover, we have been present at the acceptance testing of BOMs and production batches and we monitored container loading to verify the performance and safety of components prior to shipment and ensure conformity with the defined technical specifications.

El Romero Solar PV Plant
Country: Chile
Capacity: 247 MWp
Service(s): Quality Assurance and Quality Control; Testing & Optimization
Client(s): Acciona Energía Chile
Enertis Applus+ carried out quality inspections during the PV module manufacturing process, auditing the manufacturing lines; supervising the process, and verifying the traceability of the materials; carrying out tests in its independent laboratory and electroluminescence and visual inspections upon the delivery of the modules for batch validation. Enertis also supervised the assembly process and completed the work by performing thermography, visual inspections, and night-time electroluminescence tests on the installed PV modules. During the operation phase, Enertis Applus+ carried out module degradation measurements and solar pyranometers calibrations.
Some of our clients
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