High Accuracy PV Module Testing Before or After Ownership Transfer

We enable PV module buyers and plant owners to independently validate quality and performance of the modules to ensure maximum profitability and operational safety of their photovoltaic projects. Our harbor laboratory services allow them to test the modules even before the transfer of ownership.

Spire Solar Iberia determines the actual output of a PV module, offering the lowest measurement uncertainty

Our industry-leading equipment and temperature controlled physical laboratories under STC conditions enable us to offer the highest accuracy of measurement: Spire Solar Iberia guarantees measurements with an uncertainty of only 2%.

PV module testing in the ports of Valencia and Rotterdam

As part of the Eternalsun Spire group, we offer PV module testing services in two laboratories strategically located in key ports in Europe: the port of Valencia in Spain, and the Dutch port of Rotterdam, which operates through OdinSpire. This allows our customers to verify the modules quality and performance, before ownership transfer of the PV modules.

Odin is the leading provider of PV storage and transport in The Netherlands. Eternalsun Spire is one of the leading manufacturers of high-accuracy PV testing equipment.

Read more on our labs

Our Services

Laboratory Testing for PV Modules

  • Performance testing: Pmax validation via Flash/IV Testing conform IEC 61215-3:MQT 06
  • Electroluminescence/EL testing for defect detection conform IEC 60904-13
  • PV module visual inspection

Consultancy Services during or after the buying process of PV modules

  • Definition of the module acceptance quality criteria to demand the manufacturer
  • Module purchase contract optimization
  • Claim support

Our Customers

We provide quality control services for PV modules and consulting to any company involved in the purchase of modules or ownership of PV projects:

  • Photovoltaic Plants Owners
  • Engineering, Procurement and Construction (EPCs)
  • PV Project Developers
  • PV Module Wholesalers
  • Banks / Insurance Companies
  • Investors

Some of our customers

  • Amara
  • BayWa r.e.
  • Ecorus
  • Goldbeck
  • Sunrock


If you are a PV plant owner, developer, EPC, financial institution or investor, and you want to ensure maximum profitability and operational safety of your photovoltaic project, get in touch with us.