EPWForge is a platform designed to generate, morph, and download weather files for use in building energy simulation tools. It addresses the need for custom, location-specific weather data by allowing users to drop a pin anywhere on a world map to create a tailored Typical Meteorological Year (TMYx) or to select from approximately 17,000 OneBuilding stations worldwide. The service supports workflows for tools such as EnergyPlus, OpenStudio, IES VE, eQUEST, and any application that utilizes EPW files.
The platform offers a range of capabilities, including present-day TMYx synthesis using ISO 15927-4 Finkelstein-Schafer methodology from ERA5 reanalysis data (covering 1950 to present), as well as pass-through options for OneBuilding-published TMYx files. Users can generate Actual Meteorological Year (AMY) files for any year since 1950, enabling stress-testing against observed weather extremes such as the hottest, coldest, or most humid years. 5 scenarios) for horizons between 2030 and 2100, incorporating Belcher 2005 mean-shift and diurnal anomalies from UKCP18 and NOAA Atlas 14. Urban Heat Island effects can be modeled using Stewart & Oke 2012 Local Climate Zone presets, and users can inject extreme events like heatwaves, cold snaps, hot-humid or cold-windy periods, and wildfire smoke, with event intensities scaled according to IPCC AR6.
clm formats, bundled with a statistics summary. The platform exposes a Model Context Protocol (MCP) server for AI agents, offering four tools—find_station, analyze_weather, chart_weather, and generate_weather_file—accessible via Claude Desktop, ChatGPT, Cursor, Goose, or VS Code using the MCP wire protocol. Read-only access is available without authentication, while downloads require a free or paid API key. Tool responses include agent guidance for context-appropriate actions.
EPWForge operates on a credit-based pricing model, with all features available on every plan and credits determining usage volume. A free tier offers five lifetime credits, and paid plans range from $49 to $249 per month, with additional one-time credit packs available. 2.
EPWForge is an Other productivity product. It provides accurate, customizable weather files for energy simulation without manual data processing. It is built as a B2B product for building energy modelers and engineers. A free plan is available; paid tiers begin at $19. EPWForge is available on the web and the command line.
It is developed by EPWForge, and the product first shipped in 2026. PulseGate's similarity index finds few close equivalents — EPWForge occupies a relatively distinct niche. Key capabilities include weather file generation, custom location selection, and climate scenario morphing. EPWForge is currently in beta.
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