German ELEKTRO+ Study Finds Integrated Home Energy Systems Slash Energy Use by Up to 92%
The ELEKTRO+ initiative explains how linking a photovoltaic system, battery storage, wallbox and heat pump creates a smart home energy system. A study by the Fraunhofer Institute for Systems and Innovation Research (ISI) commissioned by the German Electrical and Electronic Manufacturers' Association (ZVEI) examined a typical 132‑m² single‑family house.
The analysis shows that a fully electrified, intelligently networked future home can cut its final energy demand by as much as 92 % compared with a conventional building and lower annual energy costs by roughly €2,360. Without coordinated control, self‑consumption of solar electricity averages 36 %; with a battery, an electric vehicle and smart energy‑management it rises to 68 % – a gain of 32 percentage points. Torsten Hoffmann, expert for ELEKTRO+, said, "The study shows clearly what is technically and economically possible when all devices communicate and cooperate."
Entities: Fraunhofer Institute for Systems and Innovation Research ISI · German homeowners · Initiative ELEKTRO+ · Torsten Hoffmann · ZVEI (German Electrical and Electronic Manufacturers' Association)
Claims
What the coverage asserts, and how well corroborated each claim is across sources.
- [● 2 SOURCES] The study was conducted by the Fraunhofer Institute for Systems and Innovation Research ISI on behalf of ZVEI. (Article text)
- [● 2 SOURCES] Annual energy cost reduction for a typical single‑family house is about €2,360. (Fraunhofer ISI study for ZVEI)
- [● 2 SOURCES] A fully integrated smart home energy system can reduce final energy demand by up to 92% compared with a conventional building. (Fraunhofer ISI study for ZVEI)
- [● 2 SOURCES] Torsten Hoffmann, expert of ELEKTRO+, said the study shows what is technically and economically possible when devices communicate and cooperate. (Quoted in article)
- [● 2 SOURCES] Self‑consumption of solar electricity without intelligent control is 36%, rising to 68% with battery, EV and smart management. (Fraunhofer ISI study for ZVEI)