What's behind Smart Readiness Indicator (SRI)
The Smart Readiness Indicator (SRI) is a European Commission initiative under Article 15 of the Energy Performance of Buildings Directive (EPBD). It measures a building’s capability to use smart technologies to drive decarbonization, improve energy efficiency, and respond dynamically to both the energy grid and building occupants.
The 3 Key Functionalities of 'Smartness'
The SRI rates a building or building unit based on its capability to perform three essential functions:
Optimize Energy Performance: Improving energy efficiency and overall in-use performance.
Adapt to Occupant Needs: Tailoring operations dynamically to the comfort and convenience of the users.
Adapt to Grid Signals: Embracing energy flexibility to actively respond to external energy grids.
How the SRI Rating is Calculated
An SRI assessment evaluates smart-ready services across a matrix of technical domains and desired impacts to aggregate a final SRI class and score.
| Technical Domains | Impact Measured |
| 1) Heating | 1) Energy efficiency |
| 2) Cooling | 2) Maintainance & fault prediction |
| 3) Domestic Hot Water | 3) Comfort |
| 4) Ventilation | 4) Convenience |
| 5) Lighting | 5) Information to Occupants |
| 6) Building envelope | 6) Health and Wellbeing |
| 7) Electricity | 7) Energy flexibility & Storage |
| 8) Electric Vehicles | |
| 9) Monitoring & Control |
Execution by legal law and deadlines
Under Article 15 of the 2024 recast of the EPBD, the SRI transitions from an optional national scheme into a mandatory application for larger commercial portfolios:
- June 30, 2026 (SRI Report): The Commission will submit a progress report to the European Parliament on national test phases.
- June 30, 2027 (Mandatory Non-Residential SRI): Taking into account the 2026 report, the Commission shall adopt a delegated act requiring the application of the SRI to non-residential buildings with HVAC systems over 290 kW.
Each country is responsible for setting its own specific rules, service lists, and scoring math for the SRI. However, a ready-to-use, European-standard template is available to any country that fills out a form and agrees to the terms.
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