Smart-ready service E-3 · Electricity
Storage of (locally generated) electricity
In short
- 1This page covers the smart-ready service E-3, storage of locally generated electricity, within the Electricity domain of the Smart Readiness Indicator.
- 2The service has five functionality levels, from no storage to a system that optimises storage and can feed excess power back to the grid.
- 3This service falls under method A, the simplified assessment suitable for smaller or simpler buildings.
The levels
Level 0
None
Level 1
On site storage of electricity (e.g. electric battery)
Level 2
On site storage of energy (e.g. electric battery or thermal storage) with controller based on grid signals
Level 3
On site storage of energy (e.g. electric battery or thermal storage) with controller optimising the use of locally generated electricity
Level 4
On site storage of energy (e.g. electric battery or thermal storage) with controller optimising the use of locally generated electricity and possibility to feed back into the grid
What is the smart-ready service E-3?
E-3 describes how a building can store electricity it generates itself. Think of solar panels that supply energy to a battery in the building. The Smart Readiness Indicator (SRI) assesses whether, and how intelligently, that storage system is controlled.
This service is part of the Electricity domain, one of nine domains within the SRI. Within the methodology, all domains contribute to the building's final score, expressed as a percentage between 0 and 100.
How are the functionality levels structured?
The service has five levels, from 0 to 4. Level 0 means there is no storage present. Level 1 stands for simple on-site storage, such as an electrical battery without further control.
From level 2 onwards, a controller is added that responds to signals from the electricity grid. Level 3 takes a step further: the controller then optimises specifically the use of locally generated electricity, not just grid signals.
Level 4 is the highest level. Here the system combines optimisation of locally generated electricity with the ability to feed surplus energy back to the grid.
Why does E-3 fall under method A?
The SRI uses two assessment methods. Method B includes 54 smart-ready services and is intended for a comprehensive assessment. Method A uses a selection of 27 services, including E-3, for a simpler and faster assessment.
For owners of smaller utility buildings, method A can therefore provide a lower threshold for making an initial estimate of smart readiness.
How does this service count towards the score?
Each smart-ready service is assessed against seven impact criteria, such as energy savings and flexibility for the electricity grid. Within those criteria, three key functionalities carry equal weight in the calculation.
The outcome per service counts towards the score of the Electricity domain, which in turn counts towards the building's overall class, ranging from below 20 percent to 90 to 100 percent.
Relevant for these building types
Next step
Want to know where your building stands?