Ensuring Compliance in the Installation of Residential Photovoltaic Systems: A Study of Standards and Practices in Finland

Abstract

The increasing adoption of residential photovoltaic (PV) systems in Finland has brought significant challenges in ensuring compliance with safety and quality standards. This paper investigates the practices of PV system installers, assessing their adherence to the SFS 6000 standard series and SFS-EN 62446-1 standard, which are harmonized with European (CENELEC) and international (IEC) standards. A detailed survey of 27 certified solar installers highlights critical gaps in commissioning inspections, documentation, and interpretations of the standards, raising concerns about installation safety and reliability. The study proposes actionable recommendations, including enhanced training, clearer documentation, and updates to regulatory guidelines, to improve compliance and promote consistent practices. These measures are essential to support Finland's sustainable energy transition and ensure safe PV installations in a rapidly growing market.