When i became interested in installing solar, i went through the usual Google searches and chose Sem Darwin. The quotation was prompt and informative. The pricing was good. Installation was done fast and expertly. The system was commissioned same day and has been working since. Technical backup installing Fronius app and Fronius Smartmeter done soon after (I would recommend both to anyone installing Fronius gear) as well as a changeover switch for my backup generator was also done by Sem techs. Extremely happy with my choice of Sem Darwin. Would highly recommend. System installed 2 years ago.