This page provides definitions for commonly used phrases and acronyms within the Climate Action Data Portal.

Acronyms/Phrases Definitions
AFV Alternative fuel vehicle. These include those classified as alternative fuel vehicles by the Department of Motor Vehicles. Alternative fuel types include battery electric, diesel, diesel hybrid, ethanol, fuel cell, gasoline, hybrid gas, plug-in hybrid, butane, compressed natural gas, methanol, methane, natural gas, and propane.
Behind-the-meter Power (electricity) that can be used without passing through a meter (e.g., provided directly to home or business)
BTU British thermal unit
CAP climate action plan
CCA/CCE Community Choice Aggregation/Community Choice Energy
Class 1 Bicycle Path As used by SANDAG and identified in the California Highway Design Manual, these are paved right-of-way lanes physically separated from vehicle traffic but may be shared by other non-motorized modes, such as pedestrians. An example is the SR-56 Bike Path.
Class 2 Bicycle Lane As used by SANDAG and identified in the California Highway Design Manual, Class 2 lanes are defined by pavement markings and signage used to allocate a portion of a roadway for exclusive or preferential bicycle travel.
Class 3 Bicycle Lane As used by SANDAG and identified in the California Highway Design Manual, Class 3 lanes provide for shared use of the road between bicycles and vehicles and are only indicated by signage.
Class 4 Cycle Track As used by SANDAG and identified in the California Highway Design Manual, Class 4 lanes are also known as cycle tracks, or protected bikeways. These are exclusive to bicycle use and fully separated from vehicular traffic as well as other non-motorized traffic. An example is the Class 4 cycle track in Downtown San Diego.
CO2 carbon dioxide
Electricity Emission Factor - Grid-only Each city may have a different grid-only electricity emission factor depending on the percentage of Direct Access customers supplied by other electric service providers through SDG&E's grid.

The emission factor does not take into account the behind-the meter PV supply. PV supply is assumed to have no emissions.
EVCS Electric Vehicle Charging Stations
These are the number of chargers, or charging points, not just the number of stations. Each station typically has more than one charger. Each charger may have more than one plug-point.
EV electric vehicle
GHG greenhouse gas
iCommute the SANDAG TDM program
kWh kilowatt hour
kW kilowatt
LED light-emitting diode
MMBTU million British thermal units
MT CO2e metric tons carbon dioxide equivalent
MT metric tons
MWh megawatt hour
MTS Metropolitan Transit System
NCTD North County Transit District
O-D VMT Origin-Destination vehicle miles traveled. These are all the miles traveled within a jurisdiction's boundaries plus the miles originating and ending in that jurisdiction divided by two. This satisfies the method of allocating VMT to jurisdictions under the ICLEI US Communities Protocol for GHG Inventories.
Power Your drive EVCS Power Your Drive chargers were installed by SDG&E at workplaces and multi-family buildings. These are not available for general public use.
PV photovoltaic
ReCAP Regional Climate Action Planning Framework
Region-wide Average Vehicle Emission Rate Based on EMFAC2017 model, average vehicle emission rate based on the VMT distribution of vehicle classes in the San Diego (SANDAG) region.
SANDAG San Diego Association of Governments
SDG&E San Diego Gas & Electric
TDM transportation demand management
VMT vehicle miles traveled
W watt
ZEV Zero-emission vehicles include battery electric, plug in hybrid and fuel cell vehicles, as defined by CARB.


Methodology for calculating greenhouse gas emissions inventories: