Solutions & Use Cases
Self-Consumption Optimisation
Energy from your own roof is worth most where it is produced. EEBUS lets devices communicate their current and forecast consumption or production – so the energy management system can schedule demand underneath the PV production curve instead of around it.
What is Self-Consumption Optimisation
The goal is simple, the coordination is not. Every device brings its own demand, its own constraints and its own idea of when it needs energy. The energy management system (EMS) – the device that implements the Customer Energy Management (CEM) role – combines these with the PV production forecast and the base load of the building, and derives operating schedules that lower energy costs without loss of comfort. If production or demand changes significantly, it recalculates.
Storage extends the day. A stationary battery system or a bidirectional EV can take up PV surplus and return it to the building after sunset. Device-specific constraints stay in force throughout: the departure time of the EV, the energy it needs by then, the operating limits of the heat pump.
The effect is twofold. Energy costs for operating the devices go down, and the carbon footprint improves, because a larger share of what the building consumes comes from its own production.
How it works
The limit travels from the grid to every controllable device – through the gateway at the grid connection point and, where present, the energy management system.
Meter
The meter provides the total consumption and feed-in of the building to the EMS or to the DSO.
In Germany, the MGCP measured values are transmitted through the Smart Meter Gateway (SMGW).
Energy management system
Knows the energy demands of all connected devices, the base load of the building and the PV production forecast, and derives the optimal operating schedules from them – without loss of comfort. A major change in production or demand triggers a recalculation.
PV inverter
The central element of the solution: it produces as much PV energy as possible to cover the building's demand. Any surplus is directed to the battery storage, to the EV or to heat production
EV charger & EV
The EV submits its energy demand and departure time to the EMS. Where the end user prefers low-carbon charging, the EMS schedules a high share of PV energy. A bidirectional EV can supply the building (vehicle-to-home, V2H), provided the required state of charge is reached by the departure time.
Battery storage
Stores PV surplus and returns it to the building after sunset. The EMS controls it within its operating limits.
Heat pump
Submits its energy demand to the EMS. If the PV inverter is curtailed by the grid, the heat pump can use PV energy that would otherwise go unused, for heat production from the building's own generation.
Home appliances
Receive a start signal from the EMS in line with the calculated operating schedule, timed to the building's own PV production.
More than a household benefit
Every kilowatt-hour consumed where it is produced is a kilowatt-hour that does not have to travel through the distribution grid. Self-consumption optimisation lowers the bill for the end user and relieves the local grid at the same time – which is why the same devices and the same interfaces also serve the Power Limitation and Flexibility Provision solutions.
Next Step
Implementing Self-Consumption Optimisation?
From the first prototype to the certified product: the EEBUS Specifications, the EEBUS Tester and EEBUS Certification take you through every step.
