SunVoima offers comprehensive measurement, commissioning, and inspection services for large-scale solar power plants (1 MW and above). Our services focus on DC-side measurements, grounding, and safety, ensuring reliable system operation, compliance with standards, and a long lifecycle.

We utilize the latest and most efficient measurement equipment in the industry, such as the newest Metrel Analyzer, specifically designed for testing large 1500 V PV systems.

Testing and Inspection Services for Large-Scale Solar Power Plants

Services offered

For solar power plant developers, builders (EPC contractors), and owners. For large-scale industrial, utility, and agricultural power plants. For sites that require an official commissioning inspection
(Finnish safety authority Tukes requirements, SFS-EN 62446-1, and IEC standards).

Commissioning Tests

Lue lisää

Complete DC-side tests and performance verification before the power plant is put into operation.

Continuity Tests

Reliable and safe continuity testing for cables, protective conductors, and grounding.

Inspection and Maintenance Services

Regular maintenance inspections, preventive troubleshooting, and official reporting.

Why SunVoima?

Advanced Test Equipment: The Metrel PV Analyzer enables rapid measurements for multiple PV strings in parallel (up to 40 A current, 1500 V), significantly speeding up the inspection of large power plants. The analyzer supports wireless irradiance and temperature measurements, as well as automatic IEC 62446 tests.

Expertise in Large-Scale Projects: We understand the specific challenges of large power plants (combiner boxes, long cable runs, grounding, and the interpretation of measurements).

Safety: Our measurements ensure that the power plant meets all Finnish and international requirements (SFS 6000-7-712, IEC 62446, etc.), reducing risks and potential insurance or warranty issues.

High-Quality Reports: Clear reports equipped with measurement data and graphics, facilitating handovers and future inspections.

Cost-Efficieny: Preventive measurements reduce downtime, improve energy yield, and shorten the investment's payback period.

Hundreds of megawatts of DC, grounding, and equipotential measurements already completed.

Continuity Tests

We ensure the electrical safety of the power plant through precise continuity and polarity checks of cables, connections, and protective conductors. We conduct thorough grounding and equipotential bonding tests across the entire DC system, guaranteeing the rapid operation of protective devices in the event of a fault. A correctly verified system rules out installation errors, minimizes the risk of electric shocks and fire, and prevents unnecessary power losses.

Inspection and Maintenance Services

We maintain the power plant's optimal yield and maximize its lifecycle through regular periodic inspections. Efficient troubleshooting quickly locates hidden faults, such as degraded connections and insulation failures, preventing costly production downtime. We always provide a precise test report and official documentation that meets local safety authority and IEC 62446-1 requirements for purposes such as commissioning protocols, insurance companies, and warranty claims.

Commissioning Tests

We perform comprehensive DC-side testing of solar power plants prior to grid connection. Our services include precise I-V curve tracing, open-circuit voltage (Voc) and short-circuit current (Isc) analysis, and insulation resistance testing for systems up to 1500 V. We verify the power plant's performance by comparing the results against the panels' STC values, taking real-time irradiance and temperature corrections into account. Our test equipment fully supports the latest bifacial and high-efficiency modules.