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Glossary of Terms 

Smart Grid

​Seven Principle Characteristics of the Smart Grid

  • Enable active participation by customers
  • Accommodate all generation and storage devices
  • Enable new products, services, and markets
  • Provide power quality for the digital economy
  • Optimize assets and operates efficiently
  • Anticipate and responds to system disturbances and reacts to them (self-heals)
  • Operate resiliently against attack and natural disaster
Renewable Energy ​Comes from natural resources, such as sunlight, wind, rain, tides and geothermal heat and is constantly replenished.
Photovoltaic (PV) ​A method (ie: solar panels) of generating power by converting solar radiation into direct current electricity.
Irradiance ​Measurement of how much sun is hitting the solar panels.
Smoothing ​Battery storage provides the ablility to "smooth" the output of the solar power.  For example, when a cloud casts a shadow on the solar panels, the battery system and smart grid technology immediately dispatch energy to fill the gap created by the cloud.
Shifting ​Stored energy can be dispatched as "firm" energy when energy demand increases. This is similar to how natural gas plants are used to meet peak usage demands today.
Storing ​Excess power available from the PNM system (Grid) can be stored in the batteries, saving customers money by eliminating the need for PNM to purchase power in the following days.
Intermittency ​An intermittent energy resource is any source of energy that is not continuously available due to some factor outside direct control.
PMU A phasor measurement unit (PMU) - is a device which measures electrical waves on an electic grid, using a common time source synchonization.  Time synchronization allows synchronized real-time measurements of mutiple remote measurement points on the grid.  These are considered to be the most important measuring devices in the future for power systems.​