Philipp Schröder started in energy in 2008, when he founded a small company called Nycon Energy. In 2011 he joined the solar developer JUWI, then moved to the battery maker sonnen and later became head of Tesla in Germany.
In 2015 he returned to sonnen. In 2018 he started CAPinside, a software company in a different field. By then he had sold panels, batteries and cars to households, but no single employer sold the whole package.
In July 2021 he founded 1Komma5° in Hamburg to sell solar, a battery, a heat pump, a wallbox and energy management software as one system. The company bought local installation businesses and put them under one brand.
A €200 million Series A followed in 2022. In October 2026 the company raised about €70 million at a valuation of about $1.35 billion, while its IPO plans stayed on hold.