The Smart Readiness Indicator (SRI): From Buzzword to Measurable Building Intelligence

For years, the term smart building has been widely used across the real estate and energy sectors without a clear definition. It could refer to automation, connectivity, comfort, digital controls, or simply modern technology. The European Union has addressed this ambiguity through the Smart Readiness Indicator (SRI), the first harmonised framework for measuring a building’s digital and operational intelligence.

As the revised Energy Performance of Buildings Directive (EPBD) comes into force, SRI is expected to play an increasingly important role in benchmarking buildings, planning upgrades, and evaluating long-term operational performance.

What the Smart Readiness Indicator Measures

The SRI assesses a building’s ability to:

• Optimize energy performance
• Adapt to occupants’ needs
• Respond to grid signals and flexibility demands

These capabilities are evaluated across nine technical domains, including heating, cooling, ventilation, lighting, domestic hot water, electricity, EV charging, dynamic building envelope, and monitoring & control.

Each domain is scored on a scale from 0 (basic functionality) to 4 (fully integrated and automated). The combined result generates an overall SRI score and grade from A to G. Unlike traditional assessments, SRI evaluates not only which technologies are installed, but how intelligently they work together.

Insights from EU Case Studies

Pilot programmes in Luxembourg, France, and Slovenia reveal a consistent pattern: most buildings begin with relatively low levels of digital maturity, with SRI scores ranging from 18% to 67%.

Common challenges include disconnected systems, limited automation, outdated controls, and minimal use of sensors or predictive functionality. At the same time, the pilots show that improvements are achievable. Measures such as room-level HVAC control, automated shading, integrated management platforms, enhanced monitoring, and on-site renewable energy systems can significantly increase SRI scores.

The findings highlight both the digital gap within Europe’s building stock and a clear pathway for improvement through digitalization, automation, and system integration.

What It Takes to Reach SRI Level C

The transition from low to moderate smartness typically follows a similar pattern across buildings. The most impactful improvements include:

• Room-level heating and cooling control
• Sensor-driven ventilation based on air quality
• Automated lighting linked to occupancy and daylight
• Unified building management platforms

These upgrades create the foundation for more advanced capabilities such as predictive HVAC control, demand response, energy storage optimization, and adaptive shading, which are associated with higher SRI levels (B and A).

One of SRI’s key strengths is that it not only measures current performance but also provides a structured roadmap for future development.

SRI vs BACS: What's the Difference?

While closely related, SRI and Building Automation and Control Systems (BACS) serve different purposes.

SRI is an assessment framework that measures how smart-ready a building is. It evaluates digital maturity and the building’s ability to optimize energy use, respond to occupants, and interact with the energy system.

BACS, on the other hand, refers to the technology itself: sensors, automation systems, software, and controls that enable intelligent building operation. Under the revised EPBD, many non-residential buildings will be required to install BACS.

In simple terms: SRI measures smartness, while BACS enables it.

Why SRI Matters

As ESG requirements and regulatory expectations continue to evolve, digital readiness is becoming a key factor in building performance.

While SRI is not a valuation tool, it provides valuable insights for building owners, asset managers, and facility operators by helping them identify operational gaps, prioritize investments, and plan future upgrades.

By offering a common framework for measuring digital maturity, SRI supports more informed decision-making and greater transparency across the real estate sector.

Myrspoven’s Perspective

The EU pilot studies reinforce a clear conclusion: digitalization and automation are the primary drivers of building smartness.

Many of the improvements that increase SRI scores do not require major hardware replacements. Instead, they can often be achieved through smarter use of existing systems and software-driven optimization.

Myrspoven’s AI technology supports several SRI domains by improving HVAC performance, enhancing indoor comfort, enabling predictive operation, and supporting flexibility strategies. As buildings move toward higher SRI levels, intelligent control systems become an increasingly important part of efficient building operations.

Conclusion

As the revised EPBD raises expectations around performance, transparency, and flexibility, digitalization is becoming central to building operations. The Smart Readiness Indicator provides the industry with a common framework for measuring and comparing building intelligence, focusing not only on installed technology but also on how effectively systems work together.

By turning smartness into a measurable characteristic, SRI helps building owners understand where they stand today and what steps will deliver the greatest impact tomorrow. In the future, digital readiness will be more than a competitive advantage—it will be a defining characteristic of high-performing buildings.