№ files_lp_3_process_7_090649
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Regulatory tariff appendix detailing the methodology and mathematical formulation used by CAISO to calculate Locational Marginal Prices and their components across Day-Ahead and Real-Time market intervals within the Market Area.
Document Title:
Appendix C – Locational Marginal Price
Initiative:
EDAM (Extended Day-Ahead Market)
Revision Status:
Second Round Revisions with redline and yellow highlighting
Organization:
California Independent System Operator
Acronym:
CAISO
Document Type:
Tariff Appendix
Subject:
Locational Marginal Price Calculation Methodology
Applicable Markets:
Day-Ahead Market; Fifteen-Minute Market; Real-Time Market
Pricing Nodes:
Generation PNodes; Scheduling Points; Aggregated Pricing Nodes
Price Components:
Marginal Energy Cost; Marginal Cost of Congestion; Marginal Cost of Losses; Marginal GHG Cost
Geographical Scope:
Market Area and Balancing Authority Areas
Regulatory Reference:
CAISO Tariff Sections 6.5.3.2.2; 6.5.5.2.4; 31.3.1.4; 34.20.2.3
Technical Basis:
AC Power Flow and DC Power Flow Solutions
Key Variables:
Reference Bus; Transmission Constraints; Power Transfer Distribution Factors; Shadow Prices
Price: 8 / 10 USD
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The product description is provided for reference. Actual content and formatting may differ slightly.
Year:
2026
Region / City:
Western Markets
Topic:
Market Launch
Document Type:
Agenda
Organization:
EDAM
Author:
Elliot Mainzer, Stacey Crowley, Joanne Serina, Neil Millar, Anna McKenna, Mark Rothleder, Dede Subakti
Target Audience:
Stakeholders, market participants, industry professionals
Period of Action:
February 4, 2026
Approval Date:
February 4, 2026
Date of Changes:
N/A
Year:
2026
Region:
California
Topic:
Energy Market Operations
Document Type:
Q&A / Technical Correspondence
Organization:
CAISO
Author:
PG&E and CAISO
Target Audience:
Market Participants, RA Providers, SCs
Period of Relevance:
EDAM V1.6 Implementation
Date of Questions:
February 2026
Date of Expected Implementation:
August 1, 2026
Key Terms:
RA Obligation, SP-Tie SR, DA RA Reassignments, HASP Flag, RAAIM Assessment
Year:
2019
Region / city:
Ireland / Northern Ireland
Theme:
Electricity market, imbalance pricing
Document Type:
Recommendation Report
Organ / institution:
EirGrid plc, SONI Limited
Author:
Modifications Committee Secretariat
Target Audience:
Regulatory Authorities, Market Participants
Period of Validity:
2019
Approval Date:
18 April 2019
Modification Date:
24 April 2019
Note:
Contextual Description
Year:
1
Region / City:
United Kingdom, Australia
Subject:
Geography
Document type:
Educational curriculum outline
Author:
N/A
Target audience:
Primary school students
Period of application:
2023
Approval date:
N/A
Date of amendments:
N/A
Year:
2020
Region / city:
Wellington
Subject:
Greenhouse gas mitigation, climate change, abatement cost curves
Document type:
Report
Agency / organization:
Ministry for the Environment
Author:
Ministry for the Environment
Target audience:
Government agencies, policy makers, environmental researchers
Period of validity:
2020 onwards
Approval date:
January 2020
Date of changes:
N/A