EPCalibration tunes your EnergyPlus model against measured data automatically - NSGA-II multi-objective optimization with ASHRAE Guideline 14 metrics (RMSE, NMBE, CV(RMSE)) and an interactive Pareto explorer. One desktop application. No coding required.
The full calibration pipeline inside one desktop application.
One-click tag injection for insulation, thermal mass, windows, infiltration, occupancy, lighting and equipment - or place custom tags in the built-in IDF editor.
Load measured CSVs from any monitoring system or utility bill - one dataset per objective, with a time-period filter to align simulation and measurement.
Run EnergyPlus once, pick any output variable, and instantly see RMSE, NMBE and CV(RMSE) before optimization starts.
Halton-seeded NSGA-II explores the parameter space with step grids, evaluation caching and parallel EnergyPlus runs.
Animate the front across generations, pick the balanced solution, inspect any point's parameters, and export CSV and plots.
Built for real calibration studies - for practitioners, energy auditors and researchers.
Calibrate several zones or datasets at once - each objective's RMSE is minimized simultaneously along a true Pareto front.
Only a monthly energy bill? EPCalibration automatically minimizes RMSE and |NMBE| of that dataset together, so the search stays multi-objective.
RMSE, NMBE, CV(RMSE), maximum difference, and the share of hours deviating by more than 1°C - reported live and logged per generation.
##tag## substitution gives direct control over any EnergyPlus parameter, with automatic injection for the ten most common calibration parameters.
Optional second run that narrows ranges around the balanced solution (with halved steps) or re-runs seeded with the elite Pareto front.
Halton low-discrepancy sampling, parameter step grids, evaluation caching and parallel simulations - plus full CSV logs of every run.
The download is free. EPCalibration runs once activated with a license key - purchase a key below, and it arrives by email within 24 hours.
EPCalibration v3.5 installer · Windows 10 / 11 (64-bit)
Why is the download free? The installer is fully functional but requires a one-time activation with a license key. This lets you verify the software installs and opens on your machine before purchasing.
Download the installer above and run it. The application opens to an activation screen.
Choose monthly ($20) or yearly ($200) and pay through secure online checkout. Your personal license key is delivered to your email address within 24 hours.
Enter the key on the activation screen. The license binds to your machine, and EPCalibration unlocks for the period you paid for.
EPCalibration is sold directly and receive your license key by email. Each key activates on one machine.
💳 Buy EPCalibration - from $20 / monthKey delivered by email
Activates on 1 machine
Monthly or yearly license
The installer is free to download, so you can confirm it installs and launches on your machine. Running calibrations requires an activated license key.
A working EnergyPlus installation (free from energyplus.net, version 9.4 or later), your IDF model and weather file, and measured data as CSV - from a monitoring system, data logger, or monthly utility bills.
After your payment is confirmed, your license key is sent to the email address you entered at checkout - within 24 hours, usually much sooner. If it doesn't arrive, check your spam folder, then email architecture.optimization@gmail.com with your order receipt number.
Each key activates on one machine. If you replace your computer, email architecture.optimization@gmail.com with your license key and the license can be reset for activation on the new machine.
A monthly license runs for one month and a yearly license for one year. Subscriptions renew through the checkout provider until you cancel them. If a license ends, the software asks for a valid key again.
Only briefly: once for activation, and occasionally to re-verify the license. All simulations and calibrations run entirely on your own machine - your models and measured data never leave your computer.
No. EPCalibration is a desktop application with a full graphical interface. You tag parameters, load measured data, and set objectives in the GUI; the EnergyPlus runs and NSGA-II optimization are fully automated.
PareVia optimizes new building designs (energy, carbon, comfort). EPCalibration tunes an existing EnergyPlus model so it matches measured reality - the essential first step before retrofit studies, M&V, or research. They work great together, and each has its own license.
By downloading, installing, purchasing or using EPCalibration, you accept the Licence Agreement (EULA). The full text is binding; in short:
The same agreement is shown by the installer. Questions: architecture.optimization@gmail.com