| AC | alternating current |
| AMI | advanced metering infrastructure |
| APS | Arizona Public Services |
| BPA | Bonneville Power Administration |
| C&I | commercial and industrial |
| CAISO | California Independent System Operator |
| CAP | Civil Air Patrol |
| CHP | combined heat and power |
| CIP | critical infrastructure protection |
| DC | direct current |
| DER | distributed energy resource |
| DES | distributed energy storage |
| DG | distributed generation |
| DHS | Department of Homeland Security |
| DMS | distribution management system |
| DOD | Department of Defense |
| DOE | Department of Energy |
| DR | demand response |
| DSO | distribution system operator |
| E-ISAC | Electricity Information Sharing and Analysis Center |
| EEI | Edison Electric Institute |
| EIA | Energy Information Administration |
| EIM | Energy Imbalance Market |
| EMP | electromagnetic pulse |
| EMS | energy management system |
| EPAct | Energy Policy Act |
| EPB | Electric Power Board |
| EPRI | Electric Power Research Institute |
| ERCOT | Electric Reliability Council of Texas |
| ERD | entity relationship diagram |
| FAA | Federal Aviation Administration |
| FEMA | Federal Emergency Management Agency |
| FERC | Federal Energy Regulatory Commission |
| FPA | Federal Power Act |
| GMD | geomagnetic disturbance |
| GMLC | Grid Modernization Laboratory Consortium |
| GPS | global positioning satellites |
| GW | gigawatt |
| ICC | Illinois Commerce Commission |
| ICS | industrial control system |
| IEEE | Institute of Electrical and Electronics Engineers |
| IPCC | Intergovernmental Panel on Climate Change |
| ISO | independent system operator |
| JCESR | Joint Center for Energy Storage Research |
| LOLP | loss of load probability |
| LPT | large power transformer |
| MAA | mutual assistance agreement |
| MW | megawatt |
| NARUC | National Association of Regulatory Utility Commissioners |
| NERC | North American Electric Reliability Corporation |
| NIST | National Institute of Standards and Technology |
| NOAA | National Oceanic and Atmospheric Administration |
| NPS | National Preparedness System |
| NRC | National Research Council |
| NRCC | National Response Coordination Center |
| NRDC | National Resources Defense Council |
| NSF | National Science Foundation |
| OMS | outage management system |
| OT | operational technology |
| PMU | phasor measurement unit |
| PSEG | Public Service Enterprise Group |
| PUC | public utility commission |
| PURPA | Public Utility Regulation Policy Act |
| PV | photovoltaic |
| QER | Quadrennial Energy Review |
| R&D | research and development |
| RD&D | research, demonstration, and development |
| RTO | regional transmission organization |
| RTU | remote terminal unit |
| RUS | Rural Utility Service |
| SAIDI | system average interruption duration index |
| SAIFI | system average interruption frequency index |
| SCADA | supervisory control and data acquisition |
| SoCo | Southern Company |
| T&D | transmission and distribution |
| UAV | unmanned aerial vehicle |