Grid Acronym Cheat Sheet
As the UK’s electricity network undergoes considerable reform at an unprecedented pace, staying abreast of the ever-increasing acronyms used to reference organisations, policies and technologies can be challenging.
Scottish Renewables has pulled together a list of network acronyms, from the most commonly used to the more niche, to help you navigate the maze of abbreviations. For a more comprehensive list of all renewable acronyms, please see our original Acronym Cheat Sheet.
AI - Anticipatory Investment
ALF - Annual Load Factor
AR - Allocation Round
ASA - Ancillary Services Agreement
ASC - Authorised Supply Capacity
ASTI - Accelerated Strategic Transmission Investment
BCA - Bilateral Connection Agreement
BEGA - Bilateral Embedded Generation Agreement
BELLA - Bilateral Embedded Licence Exemptable Large Power Station Agreement
BESS - Battery Energy Storage System
Beyond 2030 - The network build out recommended by the ESO to reach climate goals, otherwise known as tCSNP.
BM - Balancing Mechanism
BMU - Balancing Mechanism Unit
BSC - Balancing Settlement Code
BSUoS - Balancing Services Use of System
CAP - Connections Action Plan
CapEx - Capital Expenditure
CATO - Competitively Appointed Transmission Owner
CBA - Cost Benefit Analysis
CBA - Customer Build Agreement
CDB - Connections Delivery Board
CEC - Connection Entry Capacity
CES - Crown Estate Scotland
CfD - Contracts for Difference
CION - Connections Infrastructure Options Note
CM - Capacity Market
CPA - Construction Planning Assumption
CPAG - Connections Process Advisory Group
(T)CSNP - (Transitional) Centralised Strategic Network Plan
CUSC - Connection and Use of System Code
DCUSA - Distribution Connection and Use of System Agreement
DND - Detailed Network Design
DNO - Distribution Network Operator
DRC - Data Registration Code
DSI - Data Sharing Infrastructure
EALF - Effective ALF
ECAS - Energy Community Aggregator Service
ECF - Early Construction Funding
EMF - Electromagentic Field
ENA - Energy Networks Association
ESO - Electricity Systems Operator
ETDP - Electricity Transmission Design Principles
ETYS - Electricity Ten Year Statement
FES - Future Energy Scenario
FID - Final Investment Decision
FON - Final Operational Notification
FSNR - Future Systems and Network Regulation
FSO - Future Systems Operator
GEMA - Gas and Electricity Markets Authority
GIGA - Green Industries Growth Accelerator
GSP - Grid Supply Plant
HND - Holistic Network Design
HNDFUE - Holistic Network Design Follow-Up Exercise
HVAC - High-Voltage Alternating Current
HVDC - High-Voltage Direct Current
INTOG - Innovation and Targeted Oil and Gas
LAEP - Local Area Energy Plan
LoA - Letter of Authority
LOTI - Large Onshore Transmission Investment
LMP - Locational Marginal Pricing
LPA - Local Planning Authority
MITS - Main Interconnected Transmission System
MPI - Multi-Purpose Interconnector
MTPSECS - Multi Technology Power Station Effective Capacity Scaled
MTPSTECPk - Multi Technology Power Station TEC Peak
NESO - National Energy System Operator
NETS - National Electricity Transmission System
NGET - National Grid Electricity Transmission
NOA - Network Options Assessment
NPS - National Policy Statements
OBZ - Offshore Bidding Zone
OCSS - Offshore Coordination Support Scheme
ODI - Output Delivery Incentive
OfGem - Office of Gas and Electricity Markets.
OFTO - Offshore Transmission Owner
OHA - Offshore Hybrid Asset
OHL - Overhead Line
OLR - Of Last Resort
OpEx - Operating Expenditure
OTNR - Offshore Transmission Network Review
OWF - Offshore Wind Farm
PA - Project Assessment
PB - Preferred Bidder
PCD - Price Control Deliverables
PCF - Pre-Construction Funding
PT2030 - Pathway to 2030
RAB - Regulated Asset Base
RAM - Reliability, Availability, Maintainability
REMA - Review of Electricity Market Arrangements
RESP - Regional Energy Strategic Planner
RIG - Regulatory Instructions & Guidance
RIIO - Revenue = Incentives + Innovation + Outputs Regulatory Framework
SAF - Stakeholder Advisory Forum
SCG - Strategic Connections Group
SG - Scottish Government
SIDC - Single Intraday Coupling
SPEN - Scottish Power Energy Networks
SPV - Special Purpose Vehicle
SQSS - Security and Quality of Supply Standard
SSEN - Scottish and Southern Electricity Networks
SSEP - Strategic Spatial Energy Plan
STC - System Operator Transmission Owner Code
TAG - Transmission Access Guarantee
TAAP - Transmission Acceleration Action Plan
TCE - The Crown Estate
TEC - Transmission Entry Capacity
TMO4+ - Target Model Option 4+
TMS - Transmission Loss Multiplier
TNUoS - Transmission Network Use of System
TO - Transmission Operator
TOCO - Transmission Operator Connection Offer
TWR - Transmission Works Register
UGC - Underground Cable
XBID - Cross-Border Intraday Project