| AEP | Association of Electricity Producers |
| AES | Association of Electricity Suppliers |
| AFR | Accident Frequency Rate |
| ATL | Approach to limit |
| BAT | Best Available Techniques |
| BitC | Business in the Community |
| CBI | Confederation of British Industry |
| CCGT | Combined Cycle Gas Turbine |
| CCS | Carbon Dioxide Capture and Storage |
| CDM | Clean Development Mechanism |
| CEO | Chief Executive Officer |
| CERT | Carbon Emissions Reduction Target |
| CHP | Combined Heat and Power |
| CICS | Common Incident Classification Scheme |
| CO<sub>2</sub> | Carbon Dioxide |
| CR | Corporate Responsibility |
| CRC | Corporate Responsibility Committee |
| DAG | Diversity Action Group |
| DCHP | Domestic Combined Heat and Power |
| EA | Environment Agency |
| EBITDA | Earnings before Interest, Taxes, Depreciation and Amortisation |
| EEC | Energy Efficiency Commitment |
| EFDS | English Federation of Disability Sport |
| ELS | Employee-led Safety |
| EMS | Environmental Management Systems |
| ENA | Energy Networks Association |
| ERA | Energy Retail Association |
| ESO | Energy Supply Ombudsman |
| EU | European Union |
| EU ETS | The European Union Emissions Trading Scheme |
| FBA | Furnace Bottom Ash |
| FDSO | Federation for Disability Sports Organisations |
| FGD | Flue Gas Desulphurisation |
| GQCHP | Good Quality Combined Heat and Power |
| GRI | Global Reporting Initiative |
| GW | Gigawatt |
| GWh | Gigawatt hour |
| H&S | Health and Safety |
| HSE | Health and Safety Executive |
| HSRC | Health and Safety Review Committee |
| HTW | Health Through Warmth |
| IVR | Interactive Voice Recognition |
| JEP | Joint Environmental Programme |
| JI | Joint Implementation |
| kW | Kilowatt |
| kWh | Kilowatt hour |
| LBG | London Benchmarking Group |
| LCPD | Large Combustion Plant Directive |
| MtCO<sub>2</sub> | Million tones of CO2 |
| MW | Megawatt |
| MWh | Megawatt hour |
| NBEI | npower Business Energy Index |
| NGO | Non-Governmental Organisation |
| NHS | National Health Service |
| NOx | Nitrogen Oxides |
| Ofgem | Office of Gas and Electricity Markets |
| PFA | Pulverised Fuel Ash |
| PPC | Pollution Prevention and Control |
| PV | Photovoltaic |
| RO | Renewables Obligation |
| ROC | Renewables Obligation Certificates |
| ROCE | Return on Capital Employed |
| ROCs | Renewables Obligation Certificates |
| ROSPA | Royal Society for the Prevention of Accidents |
| SIR | Serious Injury Rate |
| SME | Small and Medium Enterprise(s) |
| SO2 | Sulphur Dioxide |
| STEM | Science, Technology, Engineering and Maths |
| VPS | Virtual Power Station |
| WRS | Warm Response Service |
