City Energy Analyst (CEA) is an open-source urban building energy modeling (UBEM) platform and computation tool for the design of low-carbon and highly efficient cities.

⚡ A fast, modern EnergyPlus IDF/epJSON toolkit for Python

🤖 Model Context Protocol (MCP) server for EnergyPlus building energy simulation

Convert NREL PSM3 / NSRDB solar data into EnergyPlus Weather (EPW) files — Streamlit web app and Python tool for building energy simulation.

📖 Interactive EnergyPlus Input/Output reference documentation

Type-safe Pydantic models for all EnergyPlus IDF objects

MCP server for EPWForge — generate, morph, and download EPW weather files (TMYx, AMY, CMIP6 future scenarios) for EnergyPlus, OpenStudio, IES VE, and eQUEST. For AI agents.

Reproducibility artifact for the ICAE 2026 paper: PI-HGAT for Climate-Aware NZEB Retrofit

🌐 Official website and ecosystem hub for the idfkit EnergyPlus toolkit

Quantifying HDD underestimation of heat pump peak demand: 2R1C thermal simulation on real EPW weather, a 240-run factorial Monte Carlo, Type II ANOVA, interaction regression with a Ramsey RESET test, and validation against 730 Electrification of Heat field-trial homes.

Draw the floor plan once in FreeCAD; read exact coordinates out of it. Headless Python bridge to OpenStudio building-energy geometry.

Integrated fault detection and supervisory compensation for hydronic heating faults in district-heated buildings. Unsupervised anomaly detection embedded in the EnergyPlus Python API, with signature-based diagnosis and closed-loop supply-setpoint compensation. Research code for a manuscript under review at Results in Engineering.

🧠 Language Server and VS Code extension for EnergyPlus Python development with idfkit