"New Energy", or sometimes "New and Renewable Energy", generally refers to energy resources and energy carriers other than the traditional fossil fuels of oil, gas, and coal, and nuclear energy. Such energy resources and carriers cover both renewable and non-renewable ones including solar energy, wind energy, geothermal energy, ocean energy, biomass, small-scale hydro, hydrogen energy, and natural gas hydrates. The term can also be interpreted to include new energy technologies such as fuel cell technologies which utilise the chemical reaction between hydrogen and oxygen to generate electricity without combustion or mechanical movements.


Information on Renewable Energy

EMSD has published the following information pamphlets / guidance notes aiming to provide information to the public on the applications of renewable energy technologies:

"Know More About Renewable Energy" [PDF format (3.40MB)] - explains the meaning of renewable energy and the benefits of using renewable energy.

"Know More About Solar Water Heating System" [PDF format (3.97MB)] - explains the principles of solar water heating system and provides an overview of the basic components, types of systems and issues to be considered for installation.

"Guidance Notes for Household-scale Solar Water Heating System at Village House" (2016 Edition) [PDF format (3.73MB)] - provides general guidelines for the intending purchasers, owners and installers of household-scale solar water heating system installed at village houses to understand the installation requirements and application procedures associated with the installation, operation and maintenance of such solar water heating system.

"Solar Thermal Collectors for Water Heating" [PDF format (4.74MB)] –provides a brief introduction on solar thermal collectors which capture solar heat for water heating purpose.

"Know More About Photovoltaic System" [PDF format (3.68MB)] - provides information on the working principles and application considerations etc.

The HK RE Net is a thematic website aiming to provide information on various renewable energy technologies to the public, so as to facilitate the wider adoption of such technologies in Hong Kong. Click here to visit the site.

Technical Guidelines on Grid Connection of Renewable Energy Power Systems

Although renewable energy resources can contribute to mitigating the problems associated with the use of fossil fuels, most of them are intermittent in nature. It is therefore necessary to have a backup power supply such as the electricity grid to meet the demand when the electricity generated by the renewable energy system is unable to provide the power required.

To assist the public to better understand the technical issues and the application procedures relating to grid connection of small-scale renewable energy installations, in 2005 a Working Group was formed to develop a set of guidelines, namely, "Technical Guidelines on Grid Connection of Small-scale Renewable Energy Power Systems". Members of the Working Group included representatives from power companies, professional institutions, consultants and contractors, property developers, renewable energy interest groups etc.

The “Technical Guidelines on Grid Connection of Renewable Energy Power Systems (2016 Edition)” is a revised edition of the 2007 edition incorporating updates for technical requirements since 2007.

Please click here to download the full version of the "Technical Guidelines on Grid Connection of Renewable Energy Power Systems (2016 Edition)" [PDF format (14.03MB)], and here to download the text version [PDF format (565KB)].

Guidance Notes for Solar Photovoltaic

To assist the public to better understand the issues related to solar PV system installations and the FiT application procedures, a Working Group was formed with members from Environment Bureau (ENB), Electrical and Mechanical Services Department (EMSD), Lands Department (LandsD), Planning Department (PlanD), Buildings Department (BD) and Fire Services Department (FSD) to develop the “Guidance Notes for Solar Photovoltaic (PV) System Installation”. This set of Guidance Notes provides general guidelines for intending purchasers, owners and installers of solar PV systems to understand the installation requirements and FiT application procedures associated with the installation, operation and maintenance of such systems. The “Guidance Notes For Solar Photovoltaic (PV) System Installation (January 2019)” [PDF format (35.10MB)] can be downloaded from the HK RE Net website of the Electrical and Mechanical Services Department.

Renewable Energy Projects

In Hong Kong, the primary use of solar energy is to provide hot water for facilities with heating demand or to generate electricity directly. Some small-scale photovoltaic and wind systems have been installed in remote areas to generate nominal electrical power for lighting and on-site data recording equipment.

Renewable Energy Study

In 2000, a two-stage consultancy study was commissioned to investigate the viability of using renewable energy resources such as solar energy, wind energy, wave energy, landfill gas, etc. in Hong Kong. Stage 1 of the study evaluated the potentials of various forms of renewable energy for wide-scale local use, and their related legal, institutional and promotional issues. It also made recommendations for formulating an implementation strategy. Public consultation on the findings and recommendations was carried out in 2003. Relevant documents can be downloaded via the following links:

Stage 2 of the study involved the installation of different types of photovoltaic panels in Wanchai Tower so as to collect technical data to assess their performance under local weather and environmental conditions. The 12-month performance monitoring work was completed in March 2004. Click here to download the Executive Summary of Stage 2 Study [PDF format (526KB)].