What happened
GSA's Green Proving Ground and the National Renewable Energy Laboratory (NREL) tested Prescriptive Data's Nantum platform in four federal buildings. Its machine learning algorithms use occupancy counts, weather and energy data to time the start and ramping of air handling units. During the COVID-19 pandemic, GSA guidelines required longer air handler run times, so the optimized schedules could not run. NREL therefore modeled the savings with building models calibrated to 2019 data. The modeled whole-building savings were 5.1% at the Terminal Annex Federal Building in Dallas and 11% at the Austin Courthouse. Fan savings at the Harvey W. Wiley Federal Building were 8%. Peak demand forecasts came within 1.5% to 5% of measured demand. At both modeled buildings, the yearly subscription cost more than the modeled utility savings. NREL published the report in August 2022. GSA and the Department of Energy funded the work.
Sources
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Evaluation report, by an evaluator that the makers or users commissioned.
Pachuta S, Dean J, Kandt A, Nguyen Cu K. Field Validation of a Building Operating System Platform. National Renewable Energy Laboratory for the U.S. General Services Administration and the U.S. Department of Energy, NREL/TP-5R00-83236, August 2022. Executive summary and Table 1. GSA, the deployer, funded the work with DOE.
In the modeled energy savings performance objective, the whole-building energy savings from the baseline ranged from 5% at the Terminal Annex Federal Building to 11% at the Austin Courthouse.
Details
AI system
- Workflow
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Occupancy counters at building entrances fed occupancy data to the platform. Machine learning algorithms set optimum start times and ramped air handling units down at lunchtime and at the end of the day.
Follow-up
- Conditions for replication
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Building rules allow the optimized start and ramp-down schedules to run. Utility rates are high enough for the savings to cover the subscription.
Entry details
- Sector
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Building energy management.
- Purpose
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Prescriptive Data built Nantum to optimize building operations by setting air handler schedules through the building automation system with machine learning.
Not yet checked: model, release, provider, role, configuration, inputs and outputs, autonomy, human oversight, AI contribution, beneficiaries, reach, distribution and access, duration, every measurement question, every money question, ownership and control, dependencies, cross-border connections, geopolitical implications, replication attempts, availability, institutional decision, grounds, action and result, success criterion, every evidence question, observed or intended, alternative assessments, related entries, other identifiers, category mappings.
Cite this record
Peter H. Vartanian. (2026). Nantum control modeled to save 5% to 11% of building energy (AIBD-0896). Artificial Intelligence Benefits Database, edition of 31 October 2026. https://petervartanian.xyz/aibd/records/AIBD-0896.html (archived at https://doi.org/10.7910/DVN/AADSII, version 4.0)