EU – European Union
EU ETS – Emission Trading System
EEA – European Economic Area
ERDF – European Regional Development Fund
UN – United Nations
SDGs – Sustainable Development Goals
EPBD – Energy Performanceof Buildings Directive
EED – Energy Efficiency Directive
RED – Renewable Energy Directive
ESPR – Ecodesign for Sustainable Product Regulation
NEEAP – National Energy Efficiency Action Plan
SMEs – small and medium-sized enterprises
TES – total energy supply
EJ – exajoules
GWh – gigawatt-hour
MWh – megawatt-hour
TWh – terawatt-hour
kWh – kilowatt-hour
MW – megawatt
kW – kilowatt
kt – kilotons
L – liter
toe – tonne of oil equivalent
GJ – gigajoule
m2 – square meter
GHG – greenhouse gas emissions
CO2 – carbon dioxide
EPC – energy performance certificate
API – application programming interface
BAT – best available technology
IEA – International Energy Agency
PPP – purchasing power parity
GDP – Gross Domestic Product
R&D – research and development
RD&D – research, development, and demonstration
nZEB – nearly zero energy building
ZEB – zero emission building
ISO – International Organization for Standardization
VAT – value added tax
HVAC – Heating, Ventilation, and Air Conditioning
LCOE – levelised cost of energy
CHP – combined heat and power
ROI – return on investment
EMS – energy monitoring system
SP – Stated Preference
KPI – key performance indicator
USD – United States dollars
€ – euro
NOK –Norwegian krone
ISK – Icelandic króna
SEK – Swedish krona
DKK – Danish krone
NCS – nanocoated salt
M – million (used before a currency abbreviation)
PFE – Programme for energy efficiency in energy intensive industry
EAP – Energy Audit Programme
LÅGAN – Programme for buildings with very low energy use
NVE – Norwegian Water Resources and Energy Directorate