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The past events and activities:

Year of 2024

Briefing Session 2024 for Registered Energy Assessor (REA)

EMSD shared the details on the implementation of the Buildings Energy Efficiency Ordinance on the adoption of e-submission platform, common irregularities in completing BEEO submissions, renewal of Certificate of Compliance Registration (CoCR) and the proposed BEEO amendments to the participants. Please click the following links to download the PowerPoint presentations:

Background of BEEO [PDF format (2.42MB)]
E-submission & Common Irregularities [PDF format (4.86MB)]
CoCR Renewal [PDF format (2.47MB)]
Proposed Legislative Amendments to the BEEO [PDF format (3.73MB)]

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Year of 2023

[Event Highlights Announcement] Prize Presentation Ceremony for Building Energy Efficiency Online Quiz Competition successfully concluded

Public Engagement in Energy Saving and Green Buildings for Striving Towards Carbon Neutrality

The Prize Presentation Ceremony for the Building Energy Efficiency Online Quiz Competition (The ceremony) was successfully held on March 10, 2023. In addition to presenting the awards of the Online Quiz Competition, experts from universities were invited to share their ideas in energy saving and green buildings for the participants. A survey was conducted in the ceremony to collect the views of participants about the way forward of Buildings Energy Efficiency Ordinance. A live quiz challenge followed the above activities and concluded the ceremony. Our future pillars – young people and all members of the public are encouraged to continuously reduce carbon emissions from their daily life for striving towards Carbon Neutrality in Hong Kong before 2050. For more detail, please click

Highlights of The prize presentation ceremony of “Buildings Energy Efficiency online quiz competition”

The prize presentation ceremony of “Buildings Energy Efficiency online quiz competition” was successfully completed on 10 March 2023.

Thank you all for active participation in “Buildings Energy Efficiency online quiz competition” that closed on 14 February 2023 and the prize presentation ceremony which was held on 10 March 2023 respectively.

Mr. PANG Yiu Hung, Director of the Electrical and Mechanical Services Department, delivered a speech in the Ceremony. He expressed his appreciation to the Judging Panel for their great support in facilitating the smooth of judging process. Mr. PANG also encouraged future pillars – young generation and all members of the public to continuously reduce carbon emissions in their daily life. He promised to corporate with stakeholders to continue promoting innovative technology, improving energy efficiency in buildings for achieving carbon neutrality in Hong Kong before 2050. (Click here for the welcoming speech, Chinese version only)

Photo 1
Director of the Electrical & Mechanical Services Department, Mr. PANG Yiu Hung, delivered a welcoming speech

Photo 2
Chairman of the Judging Panel - Associate Provost (Academic Affairs) of the City University of Hong Kong, Ir Prof Michael K.H.LEUNG, delivered a welcoming speech.

Photo 3
Director of the Electrical & Mechanical Services Department, Mr. PANG Yiu Hung (sixth from the right of the first row), Deputy Director/Regulatory Services, Mr. POON Kwok Ying (sixth from the left of the first row), Chairman of the Judging Panel, Ir Prof. Michael LEUNG (fifth from the right of the first row) pictured with all guests.

Photo 4
Director of the Electrical & Mechanical Services Department, Mr. PANG Yiu Hung (fifth from the right of the first row), Deputy Director/Regulatory Services, Mr. POON Kwok Ying (seventh from the right of the first row), Chairman of the Judging Panel, Ir Prof. Michael LEUNG (sixth from the right of the first row) pictured with all guests and winners.

Photo 5
Director of the Electrical & Mechanical Services Department, Mr. PANG Yiu Hung (fourth from the right), Deputy Director/Regulatory Services, Mr. POON Kwok Ying (fourth from the left), Chairman of the Judging Panel, Ir Prof. Michael LEUNG (fifth from the left) pictured with the Judging Panel members.

Video of the Prize Presentation Ceremony Highlights (Chinese version only)

Details of the Prize Presentation Ceremony

The purpose of this online quiz competition that organized by the Electrical and Mechanical Services Department (EMSD) for the members of public, students from high school, tertiary institutions and university students is to promote energy efficiency in buildings and the achievements in achieving carbon neutrality.

Nearly 1,000 members from the public and students participated in this online quiz competition, among which nearly 300 participants were provided their ideas of how to enhance energy efficiency in buildings and achieve carbon neutrality (please click here to view the answers of the online quiz competition). The EMSD invited experts from various professional institutions and universities to serve as judging panel for this online quiz competition (please click here for the members of judging panel). After detailed deliberation by the judging panel, the most creative and feasible proposals were selected out of all submitted proposals (please click here for the winner list of innovative idea awards and merit awards). Ideas of the winners include application of innovative technology, Internet of Things (loT) and big data analysis to optimize the operation of buildings; adoption of artificial intelligence (A.I.) to proactively identify energy-saving opportunities in buildings; using intelligent crowd monitoring system to adjust the operational settings in buildings automatically; installation of other renewable energy systems other than solar panels; and open energy data policy to allow the public to compare their energy performance of buildings. All ideas are very creative.

EMSD also invited Ir Prof. Michael LEUNG, Associate Provost (Academic Affairs) of the City University of Hong Kong and Ir Prof. Vivien LU from the Department of Building Environment and Energy Engineering of the Hong Kong Polytechnic University to deliver talks in the ceremony (please click here for their presentation slides). The ceremony also invited the participants at the scene to conduct a questionnaire survey to collect their views on the way forward of the Buildings Energy Efficiency Ordinance. Nearly 90% of the participants support to expand the scope of the regulation to cover data centers; and 90% support to require more building types to carry out energy audits; almost 80% support to shorten the frequency of conducting energy audit to 5 years or less; and 90% consider that disclosure of energy-related information of buildings could promote energy saving. These opinions are valuable and would be considered for our future review of Buildings Energy Efficiency Ordinance (please click here for the survey results, Chinese version only). Another popular section of the ceremony was the Live Quiz Challenge. The atmosphere was lively in which all participants were participating actively in the Live Quiz Challenge and they were found to be very familiar with the knowledge of building energy efficiency (please click here for the Q&A of the Live Quiz Challenge, Chinese version only).
Group photos of the winners
Best Creative & Innovative Ideas and Good Creative & Innovative Ideas Award Winners’ group photos
- Director of the Electrical & Mechanical Services Department, Mr. PANG Yiu Hung (fifth from the right of the first row), Deputy Director/Regulatory Services, Mr. POON Kwok Ying (seventh from the right of the first row), Chairman of the Judging Panel, Ir Prof. Michael LEUNG (sixth from the right of the first row) pictured with all guests and winners.
Merit award winners’group photo
- Chairman of the Judging Panel, Ir Prof. Michael LEUNG (fifth from the right) pictured with the winners.
Group photos of the Open Category winners
- Director of the Electrical & Mechanical Services Department, Mr. PANG Yiu-Hung (fifth from the right of the first row), Deputy Director/Regulatory Services, Mr. POON Kwok Ying third from the left of the (first row), Chairman of the Judging Panel, Ir Prof. Michael LEUNG (fourth from the left of the first row) pictured with all guests and winners.
- Chairman of the Judging Panel, Ir Prof. Michael LEUNG (third from the right) pictured with the winners.
Best Creative & Innovative Ideas Award
- Photo of the winner - Ms. IP Chue Chun
  Award Winner Ms. IP Chue Chun pictured with Chairman of the Judging Panel, Ir Prof. Michael LEUNG
Good Creative & Innovative Ideas Award (names not listed in order)
- Photo of the winner - Ms. CHEUNG Wing Yin
  Award Winner, Ms. CHEUNG Wing Yin pictured with Chairman of the Judging Panel, Ir Prof. Michael LEUNG
- Photo of the winner - Mr. GAN Jian Song
  Award Winner, Mr. GAN Jian Song pictured with Chairman of the Judging Panel, Ir Prof. Michael LEUNG
- Photo of the winner - Mr. CHOI Chi Hang
  Award Winner, Mr. CHOI Chi Hang pictured with Chairman of the Judging Panel, Ir Prof. Michael LEUNG
Merit award
- Photo of the winner - Mr. LAI Yat King
  Award Winner, Mr. LAI Yat King pictured with Chairman of the Judging Panel, Ir Prof. Michael LEUNG
- Photo of the winner - Mr. LI Liangdong
  Award Winner, Mr. LI Liangdong pictured with Chairman of the Judging Panel, Ir Prof. Michael LEUNG
- Photo of the winner - Mr.CHOY Hoo Man
  Award Winner, Mr. CHOY Hoo Man pictured with Chairman of the Judging Panel, Ir Prof. Michael LEUNG
- Photo of the winner - Mr. HUI Ka Fai
  Award Winner, Mr. HUI Ka Fai pictured with Chairman of the Judging Panel, Ir Prof. Michael LEUNG
- Photo of the winner - Mr. CHAN Ngok Shun
  Award Winner, Mr. CHAN Ngok Shun pictured with Chairman of the Judging Panel, Ir Prof. Michael LEUNG
Group photos of the Student Category winners
- Director of the Electrical & Mechanical Services Department, Mr. PANG Yiu-Hung (fifth from the right of the first row), Deputy Director/Regulatory Services, Mr. POON Kwok Ying (third from the left of the first row), Chairman of the Judging Panel, Ir Prof. Michael LEUNG (fourth from the left of the first row) pictured with Judging Panel members and the winners.
- Chairman of the Judging Panel, Ir Prof. Michael LEUNG (third from the right) pictured with the winners.
Best Creative & Innovative Ideas Award
- Photo of the winner - Ms. LAI Cheuk Lam (received by her parent)
  Parent of Award Winner, Ms. LAI Cheuk Lam pictured with Chairman of the Judging Panel, Ir Prof. Michael LEUNG
Good Creative & Innovative Ideas Award (in no particular order)
- Photo of the winner - Mr. CHIU Chun Yin
  Award Winner, Mr. CHIU Chun Yin pictured with Chairman of the Judging Panel, Ir Prof. Michael LEUNG
- Photo of the winner - Ms. YIP Yan Yee (received by her parent)
  Parent of Award Winner, Ms. YIP Yan Yee pictured with Chairman of the Judging Panel, Ir Prof. Michael LEUNG
- Photo of the winner - Ms. CHOW Yat Chi
  Award Winner, Ms CHOW Yat Chi pictured with Chairman of the Judging Panel, Ir Prof. Michael LEUNG
Merit award
- Photo of the winner - Mr. CHEUNG Ka Hei (received by his parent)
  Parent of Award Winner, Mr. CHEUNG Ka Hei pictured with Chairman of the Judging Panel, Ir Prof. Michael LEUNG
- Photo of the winner - Ms. LAM Ching Yi
  Award Winner , Ms. LAM Ching Yi pictured with Chairman of the Judging Panel, Ir Prof. Michael LEUNG
- Photo of the winner - Mr. CHIU Ka Shue
  Award Winner, Mr. CHIU Ka Shue pictured with Chairman of the Judging Panel, Ir Prof. Michael LEUNG
- Photo of the winner - Mr. SO Wai Kei
  Award Winner, Mr. SO Wai Kei pictured with Chairman of the Judging Panel, Ir Prof. Michael LEUNG
Photos of the winners sharing their ideas
Winner of Best Creative & Innovative Ideas Award, Ms IP Chue Chun and Ms. LAI Cheuk Lam were invited to share their ideas/proposals.
- Sharing by the winner - Ms. IP Chue Chun
- Sharing by the winner - Ms. LAI Cheuk Lam
Photos of presenting appreciation certificates to Judging Panel
- Chairman of the Judging Panel, Ir Prof. Michael LEUNG pictured with Director of the Electrical & Mechanical Services Department, Mr. PANG Yiu-hung
- Judging Panelist Ir Jow CHOW pictured with Director of the Electrical & Mechanical Services Department, Mr. PANG Yiu-hung
- Judging Panelist Ir Gary CHIANG (received by Ir CHAN Tat Chi), pictured with Director of the Electrical & Mechanical Services Department, Mr. PANG Yiu-hung
- Judging Panelist Ir Sally LEUNG (received by Ir Chris LO), pictured with Director of the Electrical & Mechanical Services Department, Mr. PANG Yiu-hung
- Judging Panelist Ir Prof. Vivien LU pictured with Director of the Electrical & Mechanical Services Department, Mr. PANG Yiu-hung
- Judging Panelist Dr. Simon LI pictured with Director of the Electrical & Mechanical Services Department, Mr. PANG Yiu-hung
- Judging Panelist Dr. Benjamin HO pictured with Director of the Electrical & Mechanical Services Department, Mr. PANG Yiu-hung
Photos of the talks
Ir Professor Michael LEUNG, Associate Provost (Academic Affairs) of the City University of Hong Kong and Ir Professor LU Lin Vivien from the Department of Building Environment and Energy Engineering of the Hong Kong Polytechnic University were invited to deliver their talks.

The topic of Ir Professor LEUNG was “Net-zero carbon strategies for buildings” Participants were enriched with the knowledge how to improve buildings energy efficiency through different types of new technologies and strategies.

The topic of Ir Professor LU was“Solar Reflectance Index SRI based nanomaterial solutions to energy smart building envelope”. Participants were learnt the knowledge of different new energy and how to use SRI for driving energy efficiency in building.
Presentation slides
- “Net-zero carbon strategies for buildings” by Ir Professor Michael K.H. LEUNG
- “Solar Reflectance Index SRI based nanomaterial solutions to energy smart building envelope” by Ir Professor Vivien LU (Chinese version only)
- Ir Prof. Michael LEUNG shared his presentation
- Ir Prof. Vivien LU shared her presentation
Photos of“Live Quiz Challenge” and Prize presentation Ceremony
Live quiz challenge
- Photos of the “Live Quiz Challenge”
Prize presentation ceremony
- The Duty Director/Regulatory Services of the EMSD, Mr. POON Kwok Ying (fifth from the right), Chairman of Judging Panel Ir Prof. Michael LEUNG (seventh from the right) and Judging Panel members pictured with the top award winners.
- Group photo with Witty Bear
Photos of questionnaire survey
- Photos of the Questionnaire survey

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Year of 2022

"Latest Development on BEC & EAC 2021 & EE&C initiatives under CAP2050" at HKIE(Gas & Energy Division) on 18 October 2022
"Enhancing Buildings Energy Performance Towards Carbon Neutrality by Regulation and Collaboration" at Joint Symposium 2022 on 23 November 2022 [PDF format (429KB)]
"Enhancing Buildings Energy Performance Towards Carbon Neutrality by Regulation and Collaboration" at ECO Expo Asia 2022 on 14 December 2022
Presentation regarding Buildings Energy Efficiency Ordinance (BEEO) at Technical Forum on Control and Practice of Cooling Towers and Buildings Energy Efficiency 2022 on 7 December 2022
Presentation regarding Buildings Energy Efficiency Ordinance (BEEO) at Property Management Seminar 2022 on 21 December 2022

Briefing Sessions for Registered Energy Assessors on 24 and 29 March 2022

EMSD shared the details on the implementation of the Buildings Energy Efficiency Ordinance, updates of the 2021 edition of Building Energy Code (BEC) and Energy Audit Code (EAC), renewal of Registered Energy Assessors (REA) registration with the participants. Please click the following links to download the PowerPoint presentations:

Briefing on the Implementation of BEEO [PDF format (1.5MB)]
Updates of the BEC 2021 & EAC 2021 [PDF format (4.6MB)]
Renewal of REA Registration [PDF format (4.2MB)]

In-house Briefing for the BEEO and the BEC & EAC 2021 Edition

The In-house briefing for the Buildings Energy Efficiency Ordinance (BEEO) and the 2021 Edition of the Building Energy Code(BEC) and the Energy Audit Code(EAC) was held on 28 January 2022 to share with EMSD staffs on the updates in the BEC 2021 and EAC 2021. Please click the following links to download the PowerPoint presentations:

In-house Training of the BEC 2021 & EAC 2021 [PDF format (5.6MB)]

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Year of 2019

Briefing Sessions for Registered Energy Assessors on 25, 28 February and 1 March 2019

EMSD shared the update on the full implementation of the Buildings Energy Efficiency Ordinance, briefing of the Building Energy Code (BEC) 2018 and Energy Audit Code (EAC) 2018, common non-compliance item in statutory submission, and the introduction to TG for Retro-commissioning (2018) with Registered Energy Assessors (REAs). Please click the following links to download the PowerPoint presentations:

Update on Implementation of BEEO [PDF format (1.5MB)]
Briefing of the BEC 2018 & EAC 2018 [PDF format (2.7MB)]
Common Non-Compliance Item in Statutory Submission [PDF format (3.5MB)]
Introduction to TG for Retro-commissioning (2018) [PDF format (2.3MB)]

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Year of 2018

In-house Training of the Building Energy Code 2018 Edition

The In-house Training on the Building Energy Code 2018 Edition was held on 7 and 17 December 2018 to share with EMSD staff the 2018 Edition of Building Energy Code (BEC) and Energy Audit Code (EAC). Please click the following links to download the PowerPoint presentations:

In-house Training of the BEC 2018 & EAC 2018 [PDF format (1.5MB)]

Briefing Sessions for Registered Energy Assessors on 5 and 6 March 2018

EMSD shared the update on the full implementation of the Buildings Energy Efficiency Ordinance, common non-compliance item in statutory submission, and the introduction to Retro-commissioning with Registered Energy Assessors (REAs). Please click the following links to download the PowerPoint presentations:

Update on Implementation of BEEO [PDF format (967KB)]
Common Non-Compliance Item in Statutory Submission [PDF format (8.3MB)]
Introduction to Retro-commissioning (RCx) [PDF format (3.3MB)]

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Year of 2017

Briefing Sessions for Registered Energy Assessors on 21 December 2016, 4 and 11 January 2017

EMSD shared the update on the full implementation of the Buildings Energy Efficiency Ordinance, the latest development of Technical Guidelines on the Codes, common non-compliance item in statutory submission, and the introduction to Retro-commissioning with Registered Energy Assessors (REAs). Please click the following links to download the PowerPoint presentations:

Update on Implementation of BEEO [PDF format (1.4MB)]
Briefing of Technical Guideline on BEC 2015 & EAC 2015 [PDF format (2.5MB)]
Common Non-Compliance Item in Statutory Submission [PDF format (7.01MB)]
Retro-commissioning (RCx) – A Way for System Optimization [PDF format (2.89MB)]

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Year of 2016

Joint Institution Technical Seminar on Building Energy Code (BEC) 2015 and Technical Guidelines of BEC (TG-BEC) 2015

Joint Institution Technical Seminar on Building Energy Code (BEC) 2015 and Technical Guidelines of BEC 2015 (TG-BEC 2015) was held on 19 September 2016. EMSD introduced the update on the implementation of Buildings Energy Efficiency Ordinance (BEEO), and discussed the major updates in the BEC 2015 and relevant technical requirements addressed in the TG-BEC 2015. Please click the following links to download the PowerPoint presentations:

Technical Seminar on Building Energy Code(BEC) 2015 and Technical Guidelines for the BEC 2015 [PDF format (4.3MB)]

In-house Training of the Building Energy Code 2015 Edition

The In-house Training on the Building Energy Code 2015 Edition was held on 23 December 2015, 6 and 13 January 2016 to share with EMSD staff the update on the implementation of the Buildings Energy Efficiency Ordinance (BEEO) and the briefing of the 2015 edition of Building Energy Code (BEC) and Energy Audit Code (EAC). Please click the following links to download the PowerPoint presentations:

Update on Implementation of BEEO [PDF format (1.68MB)]
Briefing of the BEC 2015 & EAC 2015 [PDF format (3.5MB)]

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Year of 2015

Briefing Sessions for Registered Energy Assessors on 7, 11 and 18 December 2015

EMSD shared the update on the implementation of the Buildings Energy Efficiency Ordinance (BEEO), common irregularities in the submissions of Stage One and Two Declarations and Form of Compliance, and briefing of the Building Energy Code (BEC) 2015 and Energy Audit Code (EAC) 2015 with Registered Energy Assessors (REAs). Please click the following links to download the PowerPoint presentations:

Update on Implementation of BEEO [PDF format (194KB)]
Common Submission Irregularities [PDF format (3.2MB)]
Briefing of the BEC 2015 & EAC 2015 [PDF format (3.24MB)]

2015 Technical Forum on Control and Practice of Cooling Towers and Buildings Energy Efficiency

2015 Technical Forum on Control and Practice of Cooling Towers and Buildings Energy Efficiency was held on 4 December 2015, covering a variety of topics including Full Implementation of the Buildings Energy Efficiency Ordinance and Latest Development of the Codes. Please click the following link to download the PowerPoint presentation:

Full Implementation of the Buildings Energy Efficiency Ordinance and Latest Development of the Codes [PDF format (956KB)]

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Year of 2014

2014 Technical Forum on Control and Practice of Cooling Towers and Buildings Energy Efficiency

2014 Technical Forum on Control and Practice of Cooling Towers and Buildings Energy Efficiency was held on 12 December 2014, covering a variety of topics including Full Implementation of the Buildings Energy Efficiency Ordinance and Latest Development of the Codes. Please click the following link to download the PowerPoint presentation:

Full Implementation of the Buildings Energy Efficiency Ordinance and Latest Development of the Codes [PDF format (798KB)]

Briefing Sessions for Registered Energy Assessors on 31 July and 20 August 2014

EMSD shared the revised lighting power density (LPD) standards and the gist of submitting Certificate of Compliance Registration, Form of Compliance (FOC) and energy audit report with Registered Energy Assessors (REAs). Please click the following links to download the PowerPoint presentations:

Revised LPD standards [PDF format (431KB)]
Common irregularities found in submissions of stage one declaration, stage two declaration and FOC [PDF format (3.50MB)]
Completion of Executive Summary (Form EE-EAes) (V.1) [PDF format (2.70MB)]

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Year of 2013

Briefing Sessions for Registered Energy Assessors on 5 and 13 December 2013

EMSD shared the main content of the technical guidelines and the experience in the enforcement of the BEEO with Registered Energy Assessors. Please click the following links to download the PowerPoint presentations:

Technical Guidelines on Building Energy Code [PDF format (2.94MB)]
Technical Guidelines on Energy Audit Code [PDF format (2.72MB)]
Frequently asked questions on requirements of Certificate of Compliance Registration (COCR) and Form of Compliance (FOC)
[PDF format (379KB)]
Frequently asked questions on requirements of Energy Audit [PDF format (1.09MB)]

Briefing Session for Registered Energy Assessors on 25 January 2013

EMSD shared with Registered Energy Assessors the experience in the enforcement of the BEEO after its full operation. Please click the following links to download the PowerPoint presentations:

Enforcement work, submissions under the BEEO, frequently asked questions and way forward
[PDF format (1.63MB)]
Amendment on Energy Audit Checklist (Form EE-EA) and Executive Summary of Energy Audit Report (Form EE-EAes)
[PDF format (1.12MB)]

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