What if buildings could do more for the grid?
Energy infrastructure is under pressure from growing demand, peak loads and constrained budgets. Before adding more capacity, ask whether buildings themselves can help manage when heating and cooling energy is needed.
Start with demand—not only supply.
Communities often evaluate generation, grid upgrades, backup systems and dedicated energy storage as separate infrastructure investments. Yet the design of individual buildings also shapes the demand that infrastructure must serve.
Termobuild integrates air pathways into cast-in-place or hollow-core concrete floors, allowing building controls and conventional HVAC to store and release thermal energy through the structure. The goal is to shift some heating and cooling activity away from peak periods while maintaining required comfort and ventilation.
The question for public and infrastructure decision-makers is where this building-level flexibility has value—and how to verify it without transferring hidden costs or risks to building operators.
Same structure. A different infrastructure strategy. Use the building's concrete as controllable thermal capacity. No dedicated thermal-storage tanks are inherent to the approach; conventional HVAC and building controls remain essential.
What would change if buildings managed their peaks?
Use these questions to evaluate where integrated thermal storage may support community, campus or portfolio goals—and where it may not.
What actually drives our peak electrical demand?
Map building and district load profiles by season, hour and weather. Separate cooling and heating demand from other loads; identify when utility or network capacity is most constrained.
How much load can buildings shift?
Model preconditioning, thermal charging, discharge duration and rebound peaks under realistic occupancy and weather scenarios. Quantify hourly demand changes rather than relying on annual energy savings alone.
Could lower peaks change infrastructure decisions?
Test whether verified demand reductions could affect electrical service sizing, campus distribution, planned upgrades or interconnection constraints. Benefits depend on local utility rules and engineering studies.
What resilience does thermal mass actually provide?
Evaluate indoor temperature drift during extreme heat and temporary mechanical interruptions. Stored thermal energy may provide a period of buffering; it is not a substitute for required backup power or life-safety systems.
What is the public-value case?
Compare installed project costs, energy and demand charges, operations, maintenance, occupant comfort and future flexibility. Consider who pays, who benefits and how outcomes are documented.
Can the performance be measured and repeated?
Define controls integration, telemetry, baseline methods, commissioning, operator training and ongoing verification. For multiple buildings, assess which conditions must be similar before extrapolating results.
Think beyond the building—and verify the system-level value.
Reduce the demand that drives investment.
Evaluate whether a changed heating and cooling load profile affects building HVAC, electrical peak demand or future distribution requirements. Do not assume utility infrastructure savings without engineering confirmation.
Improve thermal stability.
Examine how stored heating or cooling can moderate indoor temperature changes during short disturbances, while retaining ventilation, operator control and appropriate emergency strategies.
Make the whole-project case.
Compare integrated building costs with alternatives such as larger HVAC plants or dedicated thermal-storage equipment. Include controls, commissioning, maintenance and operational responsibilities.
Start with building performance. Then test broader implications.
Operating projects and cost studies can inform an evaluation, but they do not by themselves establish avoided grid upgrades, dispatchable capacity or resilience performance for a new development.
Ontario school case study
Review reported energy and operating outcomes from an educational building. Use it to frame questions about building loads, comfort and ongoing operation—not to assume the same results in every climate.
Review operating evidence ↗Rechargeable building structure
See how air-driven thermal storage works with conventional HVAC and building controls, and where thermal capacity can be integrated into the design.
Explore the building strategy ↗Project-specific outcomes depend on weather, occupancy, controls, utility tariffs, equipment, structural integration and operating strategy. Thermal load shifting is not electrical energy generation or a guaranteed grid service.
Test the value before committing to capacity.
For a school district, hospital campus, public facility or master-planned community, the most useful starting point is a comparison of realistic alternatives—not a broad claim about “grid resilience.”
Define the boundaries of the analysis: one building, a campus, a district, or a utility connection. Each level requires different evidence.
- Map the constraintIdentify peak hours, load growth, service limits, critical occupancy needs and the capital decisions under consideration.
- Establish a conventional baselineModel normal HVAC operation, electrical peak loads, installed infrastructure, comfort and operating costs.
- Model the integrated alternativeTest charging and discharging schedules, peak-day performance, control requirements, rebound effects and operational boundaries.
- Verify the public-value caseCompare whole-project costs, peak-demand changes, thermal stability, maintenance and measurement-and-verification plans before making investment claims.
What should decision-makers confirm?
Clear distinctions matter when discussing demand flexibility, resilience and public investment.
Does this generate electricity or feed power back to the grid?
No. Termobuild's approach stores heating or cooling energy in concrete and manages thermal demand. It does not generate electricity or export electrical energy.
Is this the same as a virtual power plant?
No. A building may offer flexible electrical demand through its HVAC operating schedule, but participation in a virtual power plant or demand-response program would require suitable controls, metering, utility rules and a verified operating agreement.
Can it avoid an electrical service or grid upgrade?
Possibly in a particular project, but only if engineering studies demonstrate that the changed load profile meets service and reliability requirements. No avoided upgrade should be assumed from thermal storage alone.
Does it provide backup power during an outage?
No. Thermal mass may slow temperature drift for a limited time, but fans, controls and ventilation may still require electricity. Emergency power and life-safety systems must be designed separately.
Are dedicated ice tanks or thermal-storage vessels required?
No dedicated tank-based thermal-storage plant is inherent to this approach. The concrete itself provides thermal capacity, coordinated through air pathways, conventional HVAC and controls.
Does this work only for new buildings?
The best integration path depends on existing structure, mechanical systems and project scope. New construction with suitable concrete floor systems can present an especially clear opportunity; retrofit feasibility needs its own assessment.
What information is needed for a first evaluation?
Building or development program, location, floor area, occupancy schedules, proposed HVAC and structural concepts, peak electrical loads where available, utility constraints, and resilience or budget objectives.
Before adding capacity, test what the building can do.
Bring your development program, campus plan, utility constraints or early design assumptions. Evaluate whether integrated thermal storage could change the peak-load and whole-project economics.
A project-specific feasibility discussion, not a promise of avoided grid investment.