Smart Home automation is pushing into the consumer market for several years, while at the same time energy companies are working on the deployment of Smart Grids. Although, a key idea is to integrate small energy devices at the consumers site, the potential benefits of Smart Home technologies for Smart Grids remain unused until now. In this work we present a concept for consumer-oriented integration of Smart Home devices into Smart Grid applications using multicast-enabled Home Gateways. A first evaluation using standard consumer hardware confirms general feasibility and performance of our approach.