The green energy industry uses a wide range of shorthand terms and abbreviations. Whether you are new to the sector or simply need a quick reference, this guide explains 71 of the most commonly encountered acronyms — from the science of hydrogen production and solar technology to the economics of renewable power and international policy.
| ACRONYM | FULL MEANING |
|---|---|
| AC | Alternating Current |
| ADWEA | Abu Dhabi Water and Electricity Authority |
| AEM | Anion Exchange Membrane |
| ATR | Autothermal Reforming |
| AWE | Alkaline Water Electrolysis |
| BESS | Battery Energy Storage System |
| BOS | Balance of System |
| CAPEX | Capital Expenditure |
| CCS | Carbon Capture and Storage |
| CCUS | Carbon Capture, Utilisation and Storage |
| CH4 | Methane |
| CO2 | Carbon Dioxide |
| CO2e | Carbon Dioxide Equivalent |
| COP | Conference of the Parties – UN Climate Summit |
| CSP | Concentrated Solar Power |
| DAC | Direct Air Capture |
| DC | Direct Current |
| DEWA | Dubai Electricity and Water Authority |
| DRI | Direct Reduced Iron |
| EAF | Electric Arc Furnace |
| EPC | Engineering, Procurement and Construction |
| ESG | Environmental, Social and Governance |
| ETS | Emissions Trading System |
| EV | Electric Vehicle |
| FC | Fuel Cell |
| FCEV | Fuel Cell Electric Vehicle |
| FEED | Front End Engineering Design |
| GCR | Ground Coverage Ratio |
| GH2 | Green Hydrogen |
| GHG | Greenhouse Gas |
| GW | Gigawatt |
| GWh | Gigawatt Hour |
| H2 | Hydrogen |
| HJT | Heterojunction Technology – premium solar panel |
| HRS | Hydrogen Refuelling Station |
| IEA | International Energy Agency |
| IPCC | Intergovernmental Panel on Climate Change |
| IPP | Independent Power Producer |
| IRENA | International Renewable Energy Agency |
| kW | Kilowatt |
| kWh | Kilowatt Hour |
| kWp | Kilowatt Peak – rated output under standard test conditions |
| LCOE | Levelised Cost of Energy |
| LCOH | Levelised Cost of Hydrogen |
| MV | Medium Voltage – typically 11 to 33 kV |
| MW | Megawatt |
| MWh | Megawatt Hour |
| MWp | Megawatt Peak – rated peak output of a solar array |
| NDC | Nationally Determined Contribution |
| NH3 | Green Ammonia |
| O2 | Oxygen |
| O&M | Operations and Maintenance |
| OPEX | Operational Expenditure |
| P2G | Power to Gas |
| P2X | Power to X – Power to Everything |
| PEM | Proton Exchange Membrane Electrolyser |
| PERC | Passivated Emitter and Rear Cell – solar panel type |
| PPA | Power Purchase Agreement |
| PR | Performance Ratio – actual vs theoretical energy output |
| PSH | Peak Sun Hours |
| PV | Photovoltaic Solar |
| RE | Renewable Energy |
| RFQ | Request for Quotation |
| SAF | Sustainable Aviation Fuel |
| SAT | Single-Axis Tracking – panels rotate to follow the sun |
| SCADA | Supervisory Control and Data Acquisition |
| SMR | Steam Methane Reforming |
| SOEC | Solid Oxide Electrolyser Cell |
| TOPCon | Tunnel Oxide Passivated Contact – high-efficiency solar panel |
| TWh | Terawatt Hour |
| VRE | Variable Renewable Energy |
This reference list is updated regularly as the green energy landscape evolves. Visit ultra-energy.ae for the latest insights, technical articles, and company news.
