Add doc for EFC projects

doc/project/efc.rst

@@ -1,4 +1,83 @@
 Energy Foundation China
 ***********************
 
-This research uses :doc:`/buildings/index`.
+MESSAGE team has been working with Energy Foundation (China) on the model inter-comparison activities (China Model Intercomparison (CMIN) online database, 
+8 models in all including global and national models) since 2022. 
+
+- GCAM, University of Maryland
+- MESSAGEix, IIASA
+- REMIND, PIK
+- DREAM, LBNL
+- EPS, Energy Innovation
+- PECE_LIU, Harbin Institute of Technology
+- TIMES China, Tsinghua University
+- IPAC-AIM/technology, Zhejiang University of Technology
+- CNCAP, Tsinghua University
+
+The CMIN database can be accessed at https://data.ene.iiasa.ac.at/cmin-explorer/#/login.
+The research uses :doc:`/buildings/index`.
+
+EFC 2022
+========
+- Project lead: :gh-user:`volker-krey`
+- Lead modeler: :gh-user:`guofei2016`
+
+EFC 2023
+========
+- Project lead: :gh-user:`volker-krey`
+- Lead modeler: :gh-user:`guofei2016`
+
+EFC 2024
+========
+- Project lead: :gh-user:`guofei2016`, :gh-user:`volker-krey`
+- Lead modeler: :gh-user:`yiyi1991`, :gh-user:`guofei2016`, :gh-user:`junukitashepard`
+
+Scenario matrix
+---------------
+``Cpol_netzero``
+   Current policy efforts through 2030 and extended to 2035,
+   emissions (CO2 FFI) peak year by 2030 at least,
+   net-zero CO2 FFI by 2060 in R12_CHN.
+
+``Aclt_netzero``
+   Accelerated policy actions through 2035,
+   key policies are extended or further accelerated in 2030 and to 2035,
+   emissions (CO2 FFI) peak year no later and lower than Cpol_netzero,
+   net-zero CO2 FFI by 2060 in R12_CHN.
+
+Starting scenarios
+------------------
+SSP2 v0.18
+
+Working paper
+-------------
+China’s carbon neutrality pathways with consideration of energy security, a deep dive working paper led by Jun, Yiyi, and Volker. Currently revising for submission as an academic journal article.
+Link (to be added)
+
+EFC 2025
+========
+- Project lead: :gh-user:`yiyi1991`, :gh-user:`volker-krey`
+- Lead modeler: :gh-user:`yiyi1991`, :gh-user:`Tyler-lc`
+
+Working paper
+-------------
+
+Green Synthetic Fuels for Industrial and Transport Applications in China: Policy Assessment and Long-Term Decarbonization Pathways toward 2060, 
+a journal paper and a deep dive working paper led by Luca, Yiyi, and Sid.
+
+The working paper will cover: 
+
+i) the production of hydrogen, methanol, and ammonia by a range of technologies with different energy inputs; 
+
+ii) the demand projection of downstream sectors considering the current and near-term policies (industries, vehicles, power, etc.); 
+
+iii) the distribution of these fuels at aggregated level and China’s role in the global supply chain. 
+
+The results will show the role of green synthetic fuels in China’s decarbonization pathways (e.g., uptake of green synthetic fuels in energy demand sectors, 
+comparison with other mitigation options, investment required, infrastructure required, demand scaling-up levers, policy gaps, etc.), as well as the role of 
+China in the global supply chain of green synthetic fuels (e.g., the role of China in a more general context with an increasing demand for low-carbon transition globally).  
+
+Branch
+------
+Development branch for EFC 2025 work (to be added)
+

doc/whatsnew.rst

@@ -8,6 +8,8 @@ Next release
   See :doc:`version 1.2.0 </material/v1.2.0>` for details.
 - Expand :doc:`develop` documentation (:pull:`423`)
   with material previously in :mod:`message_data` docs.
+- Update documentation for
+  :doc:`project/efc` (:pull:`426`).
 
 v2025.9.9
 =========