HMP Elmley Phase 1

Project Context

HMP Elmley represents the type of older custodial building where meaningful optimisation cannot begin until the fundamentals are in place. Unlike newer buildings, legacy assets often suffer from inconsistent documentation, ageing controls, unreliable metering, missing sensors and systems that have been altered over time.

Future Decisions worked within the wider Ministry of Justice / Kier Group delivery environment to assess House Block 2 and establish what was needed to prepare the building for future performance improvement.

The work covered:

The Challenge

Energy savings cannot be proven without a baseline. AI optimisation cannot work without reliable data.

At HMP Elmley, the first challenge was not to optimise the building immediately, but to understand whether the building systems were capable of supporting optimisation at all. The project needed to answer practical questions:

Future Decisions' Role

Future Decisions provided the digital building, baselining and operational intelligence layer for the project. Using the Future Decisions Digital Building Platform, data from the building was collected, reviewed, validated and analysed to establish the current operational state of the building.

Why Phase 1 Matters

Phase 1 is the foundation stage. It is where the building is brought up to speed before deeper energy optimisation or AI control is introduced.

Without Phase 1, clients risk making investment decisions based on incomplete data, assumptions or supplier claims. Future Decisions uses Phase 1 to establish:

This is the practical route from legacy building operation to intelligent, evidence-led control.

Building the Data Foundation

A reliable baseline requires more than a connection to the BMS. It requires validated metering, environmental sensors, good connectivity, clear system mapping and enough historical data to understand behaviour over time.

At Elmley, Future Decisions established independent environmental monitoring using LoRaWAN sensors operating separately from the incumbent BMS, providing continuous visibility of temperature, humidity, CO₂ and pressure. This was important because older buildings often lack the sensor coverage needed to understand comfort, ventilation and efficiency properly.

BMS Connectivity and Security

Future Decisions established a read-only BMS data connection to support cloud-based monitoring and reporting — allowing operational data to be captured without interfering with the incumbent BMS. The connection supported monitoring of:

This approach allows the building to be assessed safely while preserving separation from existing operational control, and creates the foundation for future AI augmentation where trusted data can support predictive and demand-led control strategies.

Data Quality and Validation

A key part of the project was understanding whether the data could be trusted. Future Decisions reviewed the quality of data coming from the BMS, meters and independent sensors, checking for:

Metering and Baseline Readiness

Metering is the foundation of energy baselining. At Elmley, Future Decisions identified that metering needed significant attention before energy savings could be properly proven or tracked.

Before any organisation commits to major capex or energy-saving works, it needs confidence that consumption can be measured accurately. Future Decisions helped identify the need for:

Ventilation and AI-Readiness

Ventilation was a major focus of the Elmley Phase 1 work. The analysis showed that improved monitoring and control could create a significant future savings opportunity once the building was brought into good operational order.

These figures show the opportunity. But the key point is that these savings require the building to be made ready first — restoring reliable metering, fixing defective plant, improving control capability and establishing a validated baseline.

Learning from HMP Five Wells

Future Decisions' work at HMP Five Wells demonstrated how building data, sensor uplift, BMS integration and operational analysis can identify meaningful savings across heating, ventilation, lighting and water systems.

Elmley Phase 1 was about preparing an older building to benefit from the same kind of approach. Five Wells showed what is possible when a building has sufficient data quality, control visibility and operational structure. Elmley showed the practical reality of legacy estates: before AI augmentation can deliver savings, the building must first be made ready.

Comfort and Compliance

Energy optimisation must not come at the expense of comfort, health or compliance. Future Decisions assessed environmental performance using temperature, humidity and CO₂ data to better understand indoor conditions, helping identify:

Automated Reporting

The Future Decisions Digital Building Platform provided a route to automated reporting and consistent visibility across the building, covering raw data points, sensor status, data quality, meter reports, environmental conditions, ventilation behaviour, comfort analysis, asset-level data and trends over time.

Automated reporting reduces the burden on facilities teams and sustainability teams. Instead of manually collecting and interpreting fragmented data, stakeholders can access structured information in one place — supporting better operational decisions and better long-term estate management.

Documentation and Asset Understanding

Elmley also highlighted a common issue in older buildings: the gap between the physical building, available documentation and live operational data. Future Decisions helped reconstruct operational understanding by combining site review, BMS data, sensor deployment, asset mapping, environmental readings and platform-based reporting.

Bringing the Building Up to Speed

The key purpose of the Elmley project was to identify what was needed to bring the building up to speed. Future Decisions identified that future optimisation would depend on improvements such as:

Preparing for AI Augmentation

AI augmentation requires good data, reliable systems and a trusted baseline. Future Decisions helps buildings move through that journey step by step. Once the necessary remediation and metering improvements are complete, AI augmentation can help the building:

Supporting Capex Decisions

Elmley Phase 1 also provides an evidence base for capital expenditure decisions. Before investing in plant replacement, control upgrades, metering, new sensors or ventilation improvements, stakeholders need to know where investment will deliver the greatest value. Future Decisions helps answer:

Value Delivered

The HMP Elmley Phase 1 project demonstrates how Future Decisions helps older buildings move toward intelligent operation. The work created value by:

Conclusion

The Ministry of Justice / Kier Group — HMP Elmley Phase 1 project shows how Future Decisions helps legacy buildings prepare for intelligent, AI-led optimisation. Working within a major public sector estate environment, with Kier Group as lead contractor, Future Decisions used BMS integration, independent sensor deployment, metering review, environmental monitoring and operational analysis to establish what was required to bring the building up to speed.

The project demonstrated that meaningful energy savings do not start with guesswork or generic recommendations. They start with reliable data, good-order operation, validated metering and a proper baseline.