Items Shortform Definition References
Air Conditioning A/C  The process of cooling, heating, dehumidification, humidification, air distribution or air purification.
Air-Conditioning/ Air-Conditioned Area   A space within boundaries maintained to operate at desired temperature through cooling, heating, dehumidification or humidification, using means other than only natural or forced fan ventilation.  
Above Ground   Located or occurring on or above the surface of the ground.  
Applicant   User making an application of an assessment on the Certification Schemes and is given full access to information for the application.  
Below Ground   A space below ground level.  
Carpark   An area of ground for parking cars.  
Central Building Services Installation CBSI (a) a building services installation in a prescribed building that does not solely serve a unit of that building; or

(b) a building services installation in a prescribed building that has no common area except an installation that –
 (i) solely serves a unit of that building; and
 (ii) is owned by a person who is not the owner of that building.
Chilled Water CHW Water that is delivered from the central chiller plant to the premises for purposes of air conditioning.  
Common Area   A common area is some shared space or amenity between unit owners or shareholders of a common interest development.  
Electricity Bill(s)   A bill for money owed for electricity used by landlord / tenant, "One Unit" means one kilowatt hour of electricity.  
Energy Assessor-ZCRB EA-ZCRB The Energy Assessor-ZCRB is eligible to conduct assessment for both Zero-Carbon-Ready Building Certification and Net Zero Energy Building Certification application.

The duty of the Energy Assessor-ZCRB is to provide detailed and independent assessement and verification services of the building’s energy systems based on the building’s data and information to the applicant.

The Energy Assessor-ZCRB has to be a Registered Energy Assessor (REA) under the Buildings Energy Efficiency Ordinance (Cap.610) and has taken a training course and passed an examination organised by HKGBC.
Energy Utilisation Index EUI In relation to the total energy consumption of the central building services installations in a building, means dividing total energy consumption for a specific period by the total internal floor area of the building.
Existing Building EB Building that has been occupied and used for at least 24 consecutive months after the occupation approval and has had a logging of the building operating data and an average occupancy of minimum 80% over the assessment period can be applied by Existing Building.  
Feed-in Tariff FiT The Feed-in Tariff (FiT) Scheme is an important new initiative to promote the development of renewable energy (RE) under the current Scheme of Control Agreements (SCAs), which were signed between the Government and the respective two power companies in April 2017.  

Under the scheme, people who install solar or wind energy generation systems at their premises can sell the RE they generate to the power companies at a rate higher than the normal electricity tariff rate.
Government, Institution or Community GIC Any public institution, body, office or agency established by, or on the basis of, the Treaty.  
Hotel   Those premises classified as hotels in accordance with Hong Kong Standard Industrial Classification (HSIC) v2.0 Code 5501.

Outdoor gardening area and car-park area are excluded in the calculation of the internal floor area of the premises.

Restaurants and other food and drinks serving places, retail shops which are rented out and operated under a separate business license should be excluded.
Internal Floor Area IFA The Internal Floor Area of a unit comprises the enclosed internal space of the unit for the exclusive use of the occupier including balconies, toilet and lift lobbies forming part of that unit.

It shall be the area contained within the enclosed walls of that unit measured to the interior face of the external wall or separating wall.
All internal partitions and columns within the unit shall be included.

Internal Floor Area only denotes the enjoyable internal space of the premises and has no correlation with the building structure.
(Unit in m²)
Landlord   The owner, lessor, or sublessor to manage the premises or to receive rent from a tenant under a rental agreement.  
New Building NB Building that is being erected or has been constructed or adapted for occupation or in use for a period of less than 24 consecutive months after the Occupation Approval has been issued can be applied by New Building.  
Operational Period   The period of time scheduled for execution of a given set of tactical actions as specified in the Operation Schedule. Operational Periods can be of various lengths, depends on the operation.  
Owner   User that owns a particular application on the Certification Schemes and is given the full access to informtion for the application.

The Owner has to engage an Energy Assessor-ZCRB to apply for certifications. 
Renewable Energy Certificate REC Power Supply Companies provides Renewable Energy Certificates (REC) for customers to purchase for achieving their renewable energy / environmental targets while supporting the local renewable energy development.  

Customers who have purchased REC possess the right to claim the environmental benefits (energy only shall be considered) associated with the amount of electricity carried in REC.
Restaurant / Food Court    Area / Space serving difference cuisines.  
Retail   An area designated in a retail store to display and sell products, provide customer service and checkout.  
Sea Water Pump House  SWPH A pump house located at the seafront to supply sea water for heat rejection purpose for cooling the central chiller plant system.
Supermarket    An area / space which sells most types of food and other goods needed in the home.  
Tenant   A person or entity entitled under a rental agreement to the use and occupancy of premises to the exclusion of others.  
Office   Area / space used as a place for commercial, professional, or bureaucratic work.