Consulting & Engineering Services
in Energy Efficiency
Transforming energy and environmental requirements into actionable building solutions.
Discover our expertise
Bioclimatic
Architecture
Designing with climate
Energy
Performance
Reducing consumption
Energy
Simulation
Test, compare, optimize
Audit & Expertise
Analyze, diagnose, advise
Environmental Impact
Embodied carbon & lifecycle
02 OUR VISION
We design low-carbon, efficient, and sustainable buildings by embedding bioclimatic principles, energy management, and technical rigor at every project stage.
Minimizing energy demand right from early architectural conception.
Optimizing envelope and systems for genuinely efficient buildings.
Putting human well-being at the core of durable thermal comfort.
Contributing to a responsible, low-carbon collective future.
Integrating climate,
mastering energy,
conceiving the essential.
03 Our Expertise
Intervening across all project stages to guarantee energy and environmental quality.
BES2E assists architects and building owners from preliminary sketch design through operation.
Orientation, solar shading, thermal inertia, natural ventilation, daylight autonomy.
Summer comfort assessment, daylight factor, glare prevention, natural airflow.
Hourly energy modeling, architectural variant comparison, precise HVAC sizing.
Tunisian regulations, RE2020, and international energy codes compliance audits.
In-situ technical audits, consumption breakdowns, prioritized cost-effective retrofits.
Embodied carbon, materials footprint, low-carbon building transition roadmaps.
Sub-metering plans, post-occupancy verification, operational commissioning.
Assistance to owners, ÉcoBAT Tunisia, HQE, and BREEAM certification processes.
Expertise implemented across Tunisia, France, and Africa
6 featured references4 countries from design to operation
2011–2013
Plan-phase energy audit
Application of the Tunisian thermal regulation across all project phases.
Energy efficiency actions Costing of passive and active measures · Support to the client and ANME for subsidies.
2018–2022
−42 % simulated annual energy consumption
After two years of operation: Consumption tracking across all trades, theoretical vs. actual comparison, and mitigation of energy losses.
2023–2024
Energy audit · Tertiary Eco-Energy Decree
Regulatory trajectory for mandatory energy consumption reduction.
2020–2022
≈ 11,000 m²Thermal and energy study
Envelope optimization · solar shading · passive energy performance.
2023–2025
−20 % simulated annual electrical consumption
152,630 kWh/year of simulated energy savings
−45 % cooling and ventilation capacity
Engineering missions that combine scientific expertise, dynamic simulation, design support, and performance verification.
05 Our Methodology
From initial climate analysis through commissioning.
We combine state-of-the-art numerical modeling with architectural pragmatism to ensure robust, measurable energy outcomes.
Local climate, microclimate, solar exposure, occupancy loads, and site opportunities.
3D geometric modeling, dynamic thermal simulation (DTS), and daylight factor calculations.
Passive architectural improvements, shading, insulation, and right-sized mechanical systems.
Continuous engineering support during design, tender, construction, and commissioning.
Energy efficiency is not an afterthought; it is an architectural design philosophy.
Why partner with BES2E for your buildings?
Led by an architect-energy auditor, our recommendations respect design vision.
100% objective consulting without manufacturer affiliations.
Prioritizing passive low-tech measures that reduce capital and operational costs.
Rigorous dynamic physics calculations replacing rule-of-thumb approximations.
Designing buildings that are frugal in energy yet generous in comfort.
From design to operation
BES2E intervenes across various project stages, **from early conception to long-term operation,** tailored to the needs of building owners and design teams.
Definition of bioclimatic targets and architectural strategies
Detailed analysis, dynamic simulations, and envelope optimization
On-site technical support and thermal performance verification
Verification of systems and regulatory compliance validation
Continuous tracking, evaluation, and persistent performance enhancement
An independent expertise to inform choices, secure investments, and sustainably optimize building energy efficiency.
29 years of experience
75+ projects completed
4 territories TunisiaFranceAfrica
Certified expertise AuditSimulationCodes
