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Open Sustainable Technology

City Energy Analyst

Helps you to analyze the effects of building retrofits, land-use planning, district heating and cooling and renewable energy on the future costs, emissions and energy consumption of neighborhoods and districts.
https://github.com/architecture-building-systems/CityEnergyAnalyst

Category: Consumption
Sub Category: Buildings and Heating

Keywords

building-energy-modeling building-energy-simulation decarbonization district-cooling district-heating geospatial-analysis open-source python ubem urban-analytics urban-design

Keywords from Contributors

building-energy urban-building-energy-model

Last synced: about 12 hours ago
JSON representation

Repository metadata

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.

README.rst 

          |license| |repo_size| |zenodo|

.. |license| image:: https://img.shields.io/badge/License-MIT-blue.svg
    :alt: GitHub license
.. |repo_size| image:: https://img.shields.io/github/repo-size/architecture-building-systems/CityEnergyAnalyst
    :alt: Repo Size
.. |zenodo| image:: https://zenodo.org/badge/DOI/10.5281/zenodo.14903253.svg
   :target: https://doi.org/10.5281/zenodo.14903253

.. image:: logo/cea_logo.png
    :scale: 25 %
    :alt: City Energy Analyst (CEA) logo
    :target: https://www.cityenergyanalyst.com

.. |repobeats| image:: https://repobeats.axiom.co/api/embed/31055fb15ba781904f1dcb1e51de1f17436a8816.svg
    :alt: Repo Contribuitions

.. |contrib.rocks| image:: https://contrib.rocks/image?repo=architecture-building-systems/CityEnergyAnalyst
    :target: https://github.com/architecture-building-systems/CityEnergyAnalyst/graphs/contributors
    :alt: Repo Contribuitions

.. |screenshot| image:: https://images.squarespace-cdn.com/content/v1/61e145bff396b63d6444554a/ac840e01-897b-49a5-bcf1-507bb7f51e7b/Screenshot+2025-03-13+at+16.40.31.jpg
    :target: https://github.com/architecture-building-systems/CityEnergyAnalyst-GUI
    :alt: CEA GUI Screenshot

City Energy Analyst (CEA)
--------------------------

The `City Energy Analyst (CEA) `_ is an urban building energy simulation platform and one of the first open-source initiatives of computation tools for the design of low-carbon and highly efficient cities. The CEA combines knowledge of urban planning and energy systems engineering in an integrated simulation platform. This allows to study of the effects, trade-offs, and synergies of urban design scenarios and energy infrastructure plans. At CEA we are committed to empowering practitioners and researchers to plan future low-carbon cities. 


* Click `here `__  for our documentation

* Click `here `__ to report an issue

* Click `here `__ to contact us


CEA Graphical User Interface
~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|screenshot|

Cite us
--------

The CEA Team. (2025). City Energy Analyst (v3.39.4). Zenodo. https://doi.org/10.5281/zenodo.14903253


Contributors
------------
|contrib.rocks|
|repobeats|

Owner metadata

GitHub Events

Total
Last Year

Committers metadata

Last synced: 4 days ago

Total Commits: 14,914
Total Committers: 46
Avg Commits per committer: 324.217
Development Distribution Score (DDS): 0.751

Commits in past year: 2,711
Committers in past year: 7
Avg Commits per committer in past year: 387.286
Development Distribution Score (DDS) in past year: 0.431

Name Email Commits
Reynold Mok 3****y 3713
Daren Thomas t****s@a****h 2781
JIMENOFONSECA f****a@a****h 2669
Zhongming Shi d****m@h****m 1633
shanshanhsieh h****h@a****h 1010
BhargavaKrishnaSreepathi s****i@a****h 758
martin-mosteiro m****o@a****h 525
Gabriel Happle h****e@a****h 328
Lenny Rogenhofer l****r@e****h 299
Mathias Niffeler n****n@g****m 298
Martín Mosteiro-Romero m****o@n****g 239
Yiqiao Wang w****7@g****m 161
Jack-Hawthorne 3****e 156
Khayatian f****n@y****m 102
Lenny Rogenhofer l****r@s****h 48
Emanuel Riegelbauer r****l@e****h 42
Amedeo Ceruti a****i@t****e 25
lguilhermers 5****s 18
Maryam MeshkinKiya m****a@g****m 16
justinfmccarty m****f@g****m 12
chenkianwee c****e@g****m 9
Bolie b****g@g****m 9
Anastasiya Popova p****a@a****h 7
Urbano Tataranni u****1@g****m 6
Jarunan Panyasantisuk j****n@e****h 6
Rowan Molony r****y@c****e 5
belloj88 b****8@g****m 4
paulneitzel p****l@s****h 4
Amr Elesawy e****y@a****h 4
Lennart Rogenhofer l****r@g****m 4
and 16 more...

Committer domains:

Issue and Pull Request metadata

Last synced: 19 days ago

Total issues: 2,463
Total pull requests: 1,617
Average time to close issues: 4 months
Average time to close pull requests: 7 days
Total issue authors: 192
Total pull request authors: 38
Average comments per issue: 2.59
Average comments per pull request: 2.0
Merged pull request: 1,443
Bot issues: 0
Bot pull requests: 4

Past year issues: 34
Past year pull requests: 135
Past year average time to close issues: 29 days
Past year average time to close pull requests: 3 days
Past year issue authors: 19
Past year pull request authors: 8
Past year average comments per issue: 0.82
Past year average comments per pull request: 1.61
Past year merged pull request: 72
Past year bot issues: 0
Past year bot pull requests: 0

More stats: https://issues.ecosyste.ms/repositories/lookup?url=https://github.com/architecture-building-systems/CityEnergyAnalyst

Top Issue Authors

  • daren-thomas (488)
  • jimenofonseca (356)
  • gabriel-happle (224)
  • shanshanhsieh (213)
  • martin-mosteiro (185)
  • BhargavaKrishnaSreepathi (90)
  • amraladdin (85)
  • lguilhermers (85)
  • reyery (80)
  • ShiZhongming (48)
  • Jack-Hawthorne (41)
  • roglen (34)
  • shizhongming (34)
  • MatNif (31)
  • Khayatian (30)

Top Pull Request Authors

  • reyery (443)
  • daren-thomas (297)
  • jimenofonseca (194)
  • martin-mosteiro (133)
  • ShiZhongming (103)
  • shanshanhsieh (82)
  • gabriel-happle (68)
  • MatNif (58)
  • BhargavaKrishnaSreepathi (58)
  • Jack-Hawthorne (39)
  • yiqiaowang-arch (22)
  • roglen (19)
  • shizhongming (16)
  • lguilhermers (12)
  • Khayatian (11)

Top Issue Labels

  • Must have (877)
  • bug (621)
  • Should have (231)
  • Won't have (221)
  • enhancement (206)
  • documentation (159)
  • easy peasy (121)
  • Interface (108)
  • User Support (103)
  • known issue (95)
  • refactoring (43)
  • is-bug (41)
  • help wanted (34)
  • priority-must-have (32)
  • priority-should-have (28)
  • about-interface (19)
  • question (18)
  • Epic (10)
  • Potential M.Sc Topic (10)
  • feature-data-management (8)
  • should-have (7)
  • feature-optimisation (6)
  • feature-demand (6)
  • Research (6)
  • plugin (5)
  • feature-renewable (5)
  • feature-new (5)
  • about-documentation (4)
  • feature-visualisation (4)
  • is-question (3)

Top Pull Request Labels

  • Must have (98)
  • bug (84)
  • enhancement (65)
  • priority-must-have (44)
  • easy peasy (21)
  • is-bug (18)
  • feature-new (14)
  • documentation (13)
  • about-interface (10)
  • refactoring (7)
  • Should have (7)
  • feature-database (6)
  • Interface (5)
  • feature-visualisation (4)
  • feature-demand (4)
  • Won't have (3)
  • help wanted (3)
  • feature-data-management (2)
  • Research (2)
  • feature-utilities (2)
  • about-documentation (1)
  • User Support (1)
  • known issue (1)

Package metadata

proxy.golang.org: github.com/architecture-building-systems/cityenergyanalyst

proxy.golang.org: github.com/architecture-building-systems/CityEnergyAnalyst

pypi.org: cea-external-tools

External tools for City Energy Analyst, mainly containing C++ components e.g. DAYSIM and CRAX

  • Homepage: https://cityenergyanalyst.com
  • Documentation: https://cea-external-tools.readthedocs.io/
  • Licenses: MIT License Copyright (c) 2025 Architecture and Building Systems, ETH Zurich Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. =============================================================================== THIRD-PARTY LICENSES =============================================================================== This software includes binaries compiled from third-party open source projects. See the vendored/licenses/ directory for the full license texts of these dependencies: - Daysim/Radiance: vendored/licenses/DAYSIM-LICENSE.txt
  • Latest release: 0.2.3 (published 2 months ago)
  • Last Synced: 2026-06-10T11:09:33.129Z (4 days ago)
  • Versions: 5
  • Dependent Packages: 0
  • Dependent Repositories: 0
  • Downloads: 335 Last month
  • Rankings:
    • Stargazers count: 5.937%
    • Forks count: 6.125%
    • Dependent packages count: 8.691%
    • Average: 17.432%
    • Dependent repos count: 48.975%
  • Maintainers (1)

Dependencies

.github/workflows/main.yml actions
  • actions/checkout v3 composite
  • mamba-org/provision-with-micromamba main composite
  • peaceiris/actions-gh-pages v3 composite
  • shadowmoose/GHA-LoC-Badge 1.0.0 composite
.github/workflows/pull.request.yml actions
  • actions/checkout v3 composite
  • mamba-org/provision-with-micromamba main composite
.github/workflows/setup_build.yml actions
  • actions/cache v3 composite
  • actions/checkout v3 composite
  • actions/upload-artifact v3 composite
  • mamba-org/provision-with-micromamba main composite
Dockerfile docker
  • condaforge/mambaforge latest build
  • ubuntu focal build
  • ubuntu latest build
setup.py pypi
docs/environment.yml conda
  • geopandas
  • mock
  • numba 0.42.0.*
  • pillow
  • python 2.7.*
  • sphinx
  • sphinx_rtd_theme
environment.yml conda
  • blosc <=1.21.0
  • deap
  • ephem
  • fiona
  • flask
  • flask-cors
  • flask-restx
  • geopandas <0.14
  • gevent
  • gevent-websocket
  • ipykernel
  • ipython
  • matplotlib-base
  • networkx <3
  • notebook
  • numba
  • numpy <1.24
  • numpy-financial
  • openpyxl
  • osmnx <1.4
  • pandas <2
  • pip
  • plotly
  • psutil
  • pvlib-python
  • pysal 2.1.0.*
  • python >=3.7
  • python-cufflinks
  • pythonocc-core 7.4.1.*
  • pytz
  • pyyaml
  • scipy
  • setuptools
  • shapely <2
  • sphinx
  • sympy
  • timezonefinder
  • utm
  • werkzeug 2.0.*
  • wntr 0.2.2.1.*

Score: 15.60158992591713