By the time many project teams access climate data, critical design decisions have already been made. That delay often leads to redesign, underperforming buildings, and growing difficulty complying with sustainability requirements, such as LEED, AIA 2030 or RIBA Sustainable Outcomes.
In a recent webinar, our consultants highlighted how IESVE can help you transform complex weather datasets into clear, actionable guidance in seconds; and compare potential weather conditions parametrically.
The questions from design and engineering teams worldwide revealed clear, consistent themes. Here’s what people are really asking.
IES provides weather files for locations globally, to enable accurate simulation for projects anywhere in the world. These are available for use in our IESVE, iCD, iSCAN and iVN products. You can find our full range of weather files here.
AMY stands for Actual Meteorological Year. The data in this file type is based off actual measured weather data for a historical year at a given location. Instead of representing typical conditions, it reflects what actually happened during that year. This is a good weather file to use for calibration or climate resilience studies.
AMY weather files from Athenium can be purchased via IESVE here.
Future weather files, TMY files and AMY files can all be used within the Climate Assessment Report in IESVE. Future weather files will be most beneficial during resiliency studies, by enabling assessment of building performance under projected climate conditions. TMY files are most suited for baseline studies, whereas AMY files are useful for validation, stress-testing, or referencing recent weather events.
Yes - the reports produced are in HTML format to allow both users and non-users to review climate insights. With interactive charts and dynamic explanations, the Climate Assessment Report makes these insights accessible to clients, planners, sustainability leads and decision makers.
The Parametric Simulation feature can run a complete annual dynamic simulation for every parameter combination, producing like-for-like results across energy, carbon, comfort, loads and other key metrics.
Depending on the study requirements, simulations can be configured at different levels of resolution, allowing teams to balance speed and detail. Early‑stage studies may use simplified or reduced‑resolution simulations (1 week per month, or per season) to rapidly explore a wide design space, while later‑stage or decision‑critical scenarios can be evaluated using full 8760‑hour dynamic simulations for maximum accuracy.
Yes - IESVE’s Parametric Simulation enables sensitivity analysis by running full simulations across controlled variations of key inputs, revealing which parameters have the greatest influence on building performance. It supports single‑parameter variation, multi‑parameter sensitivity, and range‑based testing.
As a result, Parametric Simulation is a powerful tool for feasibility studies and for justifying early‑stage design decisions with confidence.
Both the Climate Assessment Report and the latest updates to the Parametric Simulation feature are available within IESVE 2025 Feature Pack 2. Download or upgrade now today.
Want to go deeper?
If you’d like to see how these principles are applied in practice, you can: