Government Facilities Energy Audit

Sector: Government Facilities Years: 2013–2016 City: Pas-de-Calais, France Gross Floor Area (GFA): 742,250 sqm (total covered), 52 buildings Scope of the Mission: Energy Audit including low-/no-cost measures and high-capex options for comprehensive renovation.

Multi-site energy audit program covering 52 government buildings. BAARCH identified a combination of quick operational improvements and major retrofit opportunities, targeting heating optimization, building envelope upgrades, DHW efficiency, heating network performance, ventilation strategies, and lighting renewal.

Detailed Assessment

Evaluation of operating schedules, start-ups, and shutdowns.
Adjustment of daytime and nighttime set temperatures.
Modification of heating curves to optimize comfort and efficiency.
Review of heating production systems, pumps, and regulators.

Building Envelope

Upgrading exterior facade and parapet insulation.
Replacement of windows with high-performance glazing.
Insulation of exterior floor slabs and crawl spaces.

Domestic Hot Water

Installation of pressure reducers and timers on electric DHW tanks.
Optimization of DHW distribution to reduce thermal losses.

Heating Network

Thermal insulation of heating pipelines.
Installation of balancing valves and rebalancing of networks.
Restriction of radiators in low-use or overheated areas.

Ventilation & Air Renewal

Integration of AHUs where feasible to improve air renewal.
Optimized airflow control aligned with occupancy patterns.

Lighting Upgrade

Replacement of fixtures with high-efficiency LED luminaires.

Result: a comprehensive, prioritized roadmap combining immediate savings with strategic long-term upgrades, improving energy performance and comfort across the public building portfolio.