Porsche, the German car maker, has taken a stake in Hamburg-based startup 1KOMMA5° through its venture finance arm, Porsche Ventures. The startup seeks to boost the rollout of presently decentralized technologies related to renewable energy and mobility for homes by knitting together electrical installation entrepreneurs and companies onto a networking platform. 1KOMMA5° will also support them with technology for digitizing their business and centralization of admin tasks, as well as provide growth capital.