Yet today, if you see battery storage as a central element of an energy-optimised property, it is already possible to create a "low-energy property" by cleverly combining and controlling photovoltaics, batteries, CHP and heat pumps.
Expandable for the future
In the best case scenario, the electricity grid would then only be used for all sectors - electricity, heat and mobility - to transport surplus electrical energy and the gas grid would only be used to supply the CHP when the batteries run out or consumption is so high that there is a threat of having to buy more from the electricity grid.
See also: Combined heat and power as a key component of sustainable energy supply
But what will the whole thing look like tomorrow? This concept is not limited to today's technologies, but can be expanded in the future to include Power2Gas components for storing surplus energy and for operating the CHP system.
Electricity grid for surpluses and metropolitan areas
The grids will thus increasingly become a system for transporting surplus energy, which will then be more and more valuable for supplying the conurbations. Thus, step by step, in a wonderfully scalable way, we are moving further and further towards an "energy-supplying property" that completely covers its own consumption - not only on balance - and also helps to supply other properties. (mfo)
Sebastian Poensgen is managing director of Priogo AG in Zülpich.
