In line with the Swedish government's initiative and the national potential for expansion ofsolar electricity, many things will happen over the forthcoming years. Like all operationsrelated to the energy sector, there are many sub-processes that can go wrong. One in everyeighth major electrical accident in general occurs due to technical failures that emerged during commissioning. For photovoltaic systems there are both Swedish and international standards related to manufacture, testing and maintenance. For this project we have chosen to immerse ourselvesin the IEC 62446 - Grid connection photovoltaic system. IEC 62446-1 is specially designedfor grid-connected photovoltaic systems. The standard is an important part in the assurance ofreliability and includes commissioning, monitoring and documentation. This report has been completed together with Solect Power with the purpose of designing aroutine check for commissioning, as well as to compliment Solect Power’s currentdocumentation. The composed documents meets the requirements of IEC 62446 Gridconnected photovoltaic systems - Minimum Requirement, regarding system documentation,commissioning tests and inspection. The report will hopefully facilitate the work of SolectPower so that a smoother workflow can be achieved and mistakes avoided. Compiled documents are presented in the report's appendix.

Searching for savings and lowering costs of economical housing is still very actual topic nowadays. These actions are more affordable with growing energy costs. New development in technology and mass production make using of solar installations more effective and cheaper. By harvesting solar energy we don't have to pollute an environment and we can also stop production of greenhouse gases which cause changing of planetary climate.