Authors: Dylan Achey | Jim Whitaker, PE | October 18, 2021
The recently held 2021 FERC Annual Technical Conference on the reliability of the power system highlighted a range of significant challenges facing electric utilities and generators. Over 20 expert speakers engaged with FERC commissioners addressing pressing industry issues including:
- Bulk-Power System Reliability and Security
- Managing Cyber Risks in the Electric Power Sector
- Maintaining Electric Reliability with the Changing Resource Mix Toward Decarbonization
With a focus on the reliability impact of extreme weather and the shortcomings of current system planning approaches, both NERC and FERC conference participants opened the door to potential forthcoming compliance standard enhancements or changes.
Conference Highlights and Key Takeaways
NERC Recommends Reliability Standard Enhancements
As a major participant in the conference, representatives from NERC discussed both the recently released 2021 NERC State of Reliability Report (a historical assessment of system performance) and the 2021 NERC Risk Priorities Report (a forward-looking reliability risk assessment and prioritization). The NERC speakers noted that overall reliability continues to improve despite the industry’s rapid decarbonization driven transformation. They acknowledged that recent loss of load events in California and Texas indicate that there are important challenges that the industry must overcome to maintain reliability in light of extreme weather impacts on power system performance.
Related Services
NERC called the FERC Commissioner’s attention to NERC 2021 RISC Report which defined major risks to reliability as:
- Grid Transformation
- Security (Cyber and Physical)
- Extreme Events (Weather and Other Sources)
- Critical Infrastructure Interdependencies (Communications, Gas)
NERC advocated for mandatory reliability standards enhancements in the future that could include:
- Requirements that establish a process for determining the ambient temperature and weather conditions to which plants must weatherize
- Requirements for Generator Owners to identify and implement freeze protection measures for cold-weather-critical components and systems
- Generator Owner obligations to develop and implement Corrective Action Plans when their facilities experience outages, failures to start, or derates due to freezing
- New requirements and seasonal assessment protocols that better account for expected generator availability during cold weather, considering factors such as contractual arrangements for natural gas supply
Former FERC Commissioner Discusses Reliability Challenges
Former FERC Commissioner Cheryl LaFleur noted that as the generating resource mix continues its transition away from resources capable of providing energy on-call, toward decarbonized resources wholly reliant on weather as their energy sources (solar and wind), instances of energy shortfalls may occur more frequently. Coupling the variability in generation with increased electricity demand from the electrification of the heating and transportation sectors will create a significant reliability risk if not dealt with proactively. She also noted that currently, planning processes are capacity (not energy) oriented and do not plan the power system for low probability, high impact severe weather events in a systematic manner.
LaFleur stated her view that there are three simultaneous challenges to reliability:
- The ongoing transformation of the electric generation resource mix in response to climate change
- The increasing demands on the grid due to the emerging electrification of other sectors of the economy (transportation and heating)
- The increasing severe weather events that impact grid reliability
Commissioner LaFleur also referenced the ongoing debate regarding the need for standard requirements to implement regional assessments of resource adequacy. She expressed concern that the future power system will face increased risks related to energy adequacy and security, especially during extreme weather events. LaFleur advocated for new NERC Reliability Standards to require a forward-looking assessment of energy adequacy risks considering extreme weather events and contingences.
In general, many speakers noted that the current approach of planning the power system for the future based on recent experience may be inappropriate given the performance disconnect between the expected decarbonized generation portfolio performance and increased demand for electrification in other sectors of the economy.
Next Steps
If due to recent experience your company is planning its system based on current approaches, TRC can help assess how well your system is positioned for a more challenging future. Our technical teams have expertise in all power generation and power delivery engineering subject areas. We can provide an independent review of your current generation and delivery facilities and assess your system’s ability to perform as desired. TRC can help your company meet future requirements and performance expectations.
Resources
FERC 2021 Technical Conference Materials (Agenda and Panelist Prepared Remarks)
Published January 2, 2022
2021 NERC Risk Priorities Report
Published July 8, 2021
2021 NERC State of Reliability Report (2020 System Performance)
Published August 17, 2021
About TRC
TRC’s approach to power system planning, design and operations balances solutions that incorporate appropriate standards, regulatory requirements, compliance obligations and new knowledge from the review of disturbance analysis. TRC closely follows NERC’s disturbance analysis reports to discern trends and provide the most forward-looking guidance to its clients. Our work for public and private sector clients is a testament to our understanding of power system operations and planning and our successful application of technological solutions in a constantly evolving business and regulatory landscape. TRC advises numerous clients on how to stay ahead of the curve regarding the technical aspects of their mandatory compliance obligations.
This regulatory update is a service to TRC’s utility clients, helping keep you informed of issues that impact your company’s electric system security risks along with related topics regarding regulatory developments to help you achieve your company’s business goals.
Sharing Our Perspectives
Our practitioners share their insights and perspectives on the trends and challenges shaping the market.
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January 2, 2024
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October 19, 2023
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FERC Hosts Technical Conference on the Effectiveness and Improvements to CIP-014-3
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FERC Approves Plan to Register Certain Inverter-Based Resources as part of NERC Mandatory Standards Compliance Program
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NERC Files Report on Effectiveness on CIP-014 Physical Security Standard
May 25, 2023
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NERC Files Comments in the FERC Generator Interconnection Notice of Proposed Rulemaking
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NERC Proposes Implementation Guidance for PRC-019-2
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July 12, 2022
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FERC Order No. 881-A Has Implications for NERC Compliance Programs
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May 11, 2022
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March 8, 2022
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NERC Recommends Approaches for Underfrequency Load Shedding Programs
February 24, 2022
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January 18, 2022
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FERC & NERC Issue Joint Report on Freeze Reliability Failures
December 15, 2021
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NERC Accelerates Additional Cold Weather Standards Changes
November 22, 2021
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PRC-002-2 Disturbance Monitoring and Reporting Standard: Initial Mandatory Implementation Plan Dates Approach
November 18, 2021
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New Potential Compliance Standards Identified at FERC Technical Conference on Reliability
October 18, 2021
With a focus on the reliability impact of extreme weather and the shortcomings of current system planning approaches, both NERC and FERC conference participants opened the door to potential forthcoming compliance standard enhancements or changes.
NERC Issues Odessa Texas Disturbance Report
September 29, 2021
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FERC Approves Modifications to NERC’s Cold Weather-Related Standards
September 7, 2021
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NERC’s Generator Relay Loadability Standard is Now in Effect
August 30, 2021
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NERC Seeks to Improve GADS Reliability Performance Reporting
August 26, 2021
Under the enabling legislation that created the Electric Reliability Organization, NERC is responsible for assessing the reliable performance of the power system. One way NERC does so is via an industry reporting system for generation and transmission. The Generator Availability Data System (GADS) has been used by NERC and the industry for over 40 years to obtain data on the generation component of the power system[1]. Due to the rapidly changing generating resource mix, it is essential that NERC have comprehensive plant, event, outage and performance data for photovoltaic and wind generation to ensure reliability. As renewable technologies are increasingly deployed, a complete set of generation asset performance statistics is necessary to allow NERC to evaluate the system’s ability to serve load, the performance of the power system and to forecast any potential reliability issues due to resource inadequacy. Therefore, NERC is proposing to make the following enhancements to the GADS data collection process for renewable generation: Add Generator Owners that operate solar photovoltaic facilities of 20 MW or greater to the Generating Availability Data System (referred to as “GADS-PV”); and Expand GADS Wind (“GADS-W”) reporting to include connected energy storage and event reporting.
Electric Reliability Council of Texas Releases 60-Point Plan for Change
August 23, 2021
ERCOT’s recently released “Roadmap to Improving Grid Reliability” presents a plan for change in Texas that includes increasing electric power generation and purchasing significantly more power reserves.
Prepare for Upcoming NERC Compliance Deadlines
August 20, 2021
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Developments in Texas and Nationally Mandate Extreme Weather Responses to Protect Reliability
July 23, 2021
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Electric System Planning for Extreme Weather Events: NERC Recommends Actions to Protect Reliability this Summer
June 23, 2021
Due to recent extreme weather-related power systems failures, stakeholders are examining the planning and operations practices for all electric utilities.
NERC’s FAC-008 Guidance on Facility Ratings
May 24, 2021
FAC-008 is one of the most data-intensive standards in the NERC regulatory framework. Compliance has been difficult for many utilities. Recently, FERC made public it’s intent to address serious allegations of facility ratings violations, including a lack of rigor by one utility.
NERC Issues Battery Energy Storage Systems Reliability Guidance
April 22, 2021
While NERC has recently published a reliability guideline addressing inverter-based resources generally, they are now giving more attention to the various potential uses of BESS to support effective implementation with newly released guidance.
NERC Proposes Revisions to CIP-008
March 27, 2021
NERC’s CIP-008 standard aims to mitigate reliability risks resulting from a Cyber Security Incident by specifying incident response requirements. Newly proposed revisions would augment mandatory reporting to include incidents that compromise, or attempt to compromise, a utility’s Electronic Security Perimeter (ESP) or associated Electronic Access Control or Monitoring Systems (EACMS).
Cold Weather Reliability Preparedness and Hardening
March 22, 2021
The latest weather impacts to power reliability have accelerated the need for mandatory regulatory compliance changes.
NERC Releases 2021 Compliance Monitoring and Enforcement Findings
February 8, 2021
NERC’s 2021 Compliance Monitoring and Enforcement Program reframes the previous year’s risks and their associated areas of focus. Utilities should review their compliance programs and internal controls to determine if enhancement or changes are need to maintain compliance.
NERC Proposes Revision of Pending TPL-001-5.1 Standard
January 20, 2021
NERC has recently undertaken important standards and guidance development activities related to the proliferation of inverter-based technologies such as solar and wind generation, as well as battery energy storage which is growing as an industry solution to ensure the reliability of renewable power for end-use customers.
NERC and FERC Take Action on Facilities Ratings
December 4, 2020
There has been significant work across the electric industry to improve facility ratings related processes, programs, frameworks, internal controls and best practices. Yet this continues to be a challenging area for utilities, particularly from an asset management and regulatory compliance perspective.
FERC Issues Annual Report on Critical Infrastructure Protection (CIP) Reliability Audits
November 17, 2020
In its 2020 Report on CIP Reliability Audits, the Federal Energy Regulatory Commission found that most of the cybersecurity protection processes and procedures adopted by utilities met the mandatory CIP requirements for protecting the Bulk Electric System. However, there are areas for improvement.
NERC Prioritizes Inverter-Based Resources for Future Standards Development
October 19, 2020
As inverter-based resources found in wind and solar generation technologies continue to rapidly penetrate the U.S. power delivery system, NERC remains focused on managing the potential reliability consequences.
NERC Issues 2020 State of Reliability Report
September 22, 2020
The Report identifies areas of ongoing concern including generation reserve margins and the reliability risk from shifting the resource mix toward renewables.
NERC Issues Lessons Learned on Misoperations Due to Mixing Relay Technologies
August 13, 2020
On July 10, 2020 NERC released new Lessons Learned guidance to address situations where multiple composite protection systems have misoperated as a result of mixing protective relay technologies at the remote terminals of directional comparison blocking (DCB) schemes. This technical information will help utilities improve the reliability of the Bulk Power System.
NERC Reliability Standard PRC-024-3 Approved: Frequency and Voltage Protection Settings for Generating Resources
July 28, 2020
On July 9, 2020 NERC standard PRC-024-3 was approved, paving the way for improved protection systems in support of keeping generating resources connected during defined frequency and voltage excursions.
Summary of NERC CIP Standards Updates
June 29, 2020
FERC has released a notice of inquiry seeking comments on potential enhancements to NERC’s Critical Infrastructure Protection (CIP) Reliability Standards.
NERC Protection System Compliance Studies Due This Year
February 24, 2020
NERC’s PRC-027-1 standard was approved by FERC in 2018 and is set to go into effect on October 1, 2020. Utilities should begin preparing now to meet compliance requirements which include significant system studies.
NERC Compliance Assurance: Maintaining Cross Functional Data Integrity
January 21, 2020
Assuring continued power system reliability is a complex undertaking for utilities. Balancing the demands of system changes and regulatory compliance is an essential strategy for optimizing ongoing operations. Given the wide range of NERC standard families that require simultaneous data management for compliance, data integrity, data flow and data verification are critical for avoiding violations that can impact electric service to customers and communities.
NERC Reliability Report Prioritizes Power System Security Risks for Action
January 2, 2020
NERC’s 2019 ERO Reliability Risk Priorities Report identified and prioritized the major risks facing the utility industry with a particular focus on security issues.
NERC Reliability Report Prioritizes Power System Risks
November 21, 2019
Looking ahead to the many changes coming to North America’s Bulk Power System (BPS), NERC’s 2019 ERO Reliability Risk Priorities Report highlights the top issues requiring industry and regulatory attention and recommends actions for the ongoing protection of BPS reliability.
NERC Pursues Changes to Protection Relay and Control (PRC) Standards
September 24, 2019
Two Standards Authorization Requests currently being debated in the NERC stakeholder engagement process could help clarify PRC standards obligations for generator owners and operators.
NERC to Modify Standard and Develop Compliance Guidance to Accommodate Inverter-Based Generation Technologies
February 20, 2019
Renewable energy systems have dramatically changed the power generation resource mix. These new generation technologies no longer involve directly coupled rotating generators which were once standard in the industry. Now, inverters that change Direct Current (DC) electricity to the Alternating Current (AC) electricity suitable for delivery via AC transmission systems are becoming more prevalent, raising reliability…
NERC Addresses Single Points of Failure in Protection Systems Among Other FERC Concerns
October 25, 2018
Under the proposed NERC TPL-001-5 standard, utilities with transmission planning responsibilities will be required to identify reliability risks related to protection system failures and take mandatory corrective action. It will be critical to have an in depth understanding of your company’s protection system settings and to perform the system studies necessary to identify where single points of failure may result in cascading tripping of transmission elements. Mitigation actions may require the installation of redundant protection systems which in turn may lead to significant substation redesign. Transmission planners and planning coordinators should begin preparing for any necessary protection system changes. TPL-001-5 Overview NERC began studying the reliability risk associated with single points of protection system failure starting in 2011 as directed in FERC Order 754. TPL-001-5 will bring significant changes for Planning Coordinators and Transmission Planners as they perform annual Planning Assessments. There is a new obligation to adequately account for the reliability risk posed by single point of protection system failure via risk-based Assessment. This reliability risk management approach will be implemented through modifications to the Category P5 Planning Event which is described in Table 1 of the TPL-001-5 standard. NERC believes that the most cost-effective Corrective Action Plans to address unacceptable system performance for the P5 Planning Events will likely be to add protection system component redundancy in certain cases. Protection system redundancy changes to address Category P5 Event system performance violations should reduce or even negate non-redundant component related risks that need to be considered in assessing transmission system performance. These risks will be identified during simulations of certain extreme events as required under the standard. TPL-001-5 also addresses reliability risks related to outage management as directed in FERC Order 786. The standard requires utility planners to consider maintenance outages of significant facilities as well as outages for critical long lead time to repair or replace equipment. Specifically, it addresses stability analysis to assess system performance for conditions expected during possible unavailability of long lead time equipment. Although it is not a NERC defined term, it is believed that a “spare equipment strategy will be sufficient to allow flexibility for utilities to conduct both steady state and stability analysis required by TPL-001-5. For example, a utility’s spare equipment strategy may include the warehousing of a replacement transformer to be installed given the failure of an in service transformer. When a utility’s spare equipment strategy may prevent major transmission equipment from being out-of-service for one year or more, this possible equipment unavailability need not be assessed as part of TPL-001-5.
NERC Proposes Compliance Monitoring and Enforcement Plan for 2019
September 26, 2018
This month, NERC released the first draft of its 2019 Compliance Monitoring and Enforcement Plan (CMEP) which identifies power delivery system risks and outlines compliance audit requirements for next year. The risk elements outlined in the plan include significant differences from previous years, as shown in the table below. Each NERC region must consider these risks as they develop their monitoring and audit scopes for utilities. Utilities should be prepared to be audited and implement any necessary compliance initiatives in these areas.
NERC Calls for New Approach to Reliability Planning Due to Gas Supply Disruption Risks
December 14, 2017
A recently published NERC report concludes that as reliance on natural gas to meet electric generation requirements increases, additional planning and operational measures must be considered to mitigate power system reliability risks.
Hardening Cyber Defenses at Chemical Facilities a Key Part of Federal CFATS Regulations
October 24, 2017
Federal CFATS regulations cover more than just the handling, transport and storage of dangerous chemicals. They also deal with tools and methods terrorists could use to acquire the deadly agents – such as a cyber attack.
NERC CIP-013-1 Standard for Supply Chain Risk Management
September 29, 2017
NERC has filed mandatory standard CIP-013-1 for supply chain risk management, requiring controls to mitigate cyber threats and their impact to the reliable operation of the Bulk Electric System.
NERC Identifies New Reliability Risk due to Utility Scale Solar Generation Inverter Design
June 13, 2017
NERC has released a report documenting its findings and recommendations related to reliability risks from utility scale solar generation projects with implications for PRC-024 compliance, as well as generation, interconnection and protection system technologies.
NERC Standard Extends Maintenance Program Obligations to Generators
February 3, 2014
The approval of NERC Standard PRC-005-2 extends protection system maintenance obligations to Generators and crates one comprehensive standard establishing minimum maintenance activities and maximum time intervals for protection systems and load shedding equipment affecting the bulk electric system.
FERC Issues Guidance to Improve Power System Security and CIP Compliance
September 30, 2024
This update provides details from FERC 2024 staff report from CIP audits, so utilities can improve compliance and reduce security risks.
Prevent NERC Compliance Failures with Readiness Reviews
February 20, 2024
Every NERC-registered utility must strive for continuous compliance with their portfolio of applicable NERC Reliability Standards
NERC & FERC Release Winter Storm Elliott Report
January 2, 2024
NERC and FERC have released their final report on Winter Storm Elliott which provides reinforcement for recommendations in prior cold weather-related disturbance event reports. The Report identifies critical reliability performance shortcomings and the reliability related near misses. NERC states that a crisis was “narrowly dodged.” The Report outlines the steps the industry must take to avoid a repeat in the future.
FERC Order 901 Calls for Standards to Address IBR Reliability Gaps
November 27, 2023
Inverter Based Resources are playing central role when it comes to adding new electric generation capacity into the bulk power system.
FERC Issues Order 2023 to Resolve Interconnection Process Issues
September 25, 2023
The Federal Energy Regulatory Commission has approved Order 2023 to facilitate and improve the speed and reliability of adding new energy resources to the power system
FERC Hosts Technical Conference on the Effectiveness and Improvements to CIP-014-3
August 30, 2023
Expert Discussions and Key Takeaways Focus on Physical Security
FERC Extreme Weather Initiative Will Change the Transmission Planning Process
July 26, 2023
FERC issued a Final Rule directing NERC to develop a new or modified reliability standard addressing transmission system planning performance requirements for extreme heat or cold weather events.
FERC Approves Plan to Register Certain Inverter-Based Resources as part of NERC Mandatory Standards Compliance Program
June 21, 2023
FERC issued an order approving NERC’s compliance filings.
NERC Files Report on Effectiveness on CIP-014 Physical Security Standard
May 25, 2023
On behalf of the North American Electric Reliability Corporation (NERC), its President and CEO Jim Robb, recently presented to the Federal Energy Regulatory Commission (FERC) a summary of NERC’s report on the effectiveness of NERC’s CIP-014 Physical Security Standard. There were almost 1,700 physical security incidents reported to the Electricity-Information Security Analysis Center (E-ISAC) in 2022, an increase of 10.5% from 2021.
FERC Issues Order on Cold Weather Reliability Standards
April 27, 2023
FERC has approved two NERC proposed cold weather-related reliability standards.
FERC Orders Internal Network Security Monitoring Rule to be Finalized
March 14, 2023
FERC directed NERC to develop Reliability Standards to implement INSM within trusted CIP environments.
NERC Files Comments in the FERC Generator Interconnection Notice of Proposed Rulemaking
November 21, 2022
The rulemaking addresses improvements needed to reliably facilitate the power industry’s transition to renewable and distributed generating resources utilizing inverter-based technologies.
Revisions to FAC-001 and FAC-002 Submitted for FERC Approval
July 12, 2022
Reliability Standards FAC-001-4 and FAC-002-will resolve uncertainty regarding the meaning of “materially modify” under the currently effective standards.
FERC Order No. 881-A Has Implications for NERC Compliance Programs
June 23, 2022
Updated Order will have significant impact on NERC compliance programs related to both PRC standards and facilities ratings. Utilities should review the Order’s requirements and prepare for changes needed to remain compliant.
NERC’s Revised PRC-024-3 Standard for Inverter-Based Generation Effective in October 2022
May 11, 2022
Changes to PRC-024-3 in support of inverter-based generation performance are going into effect in October of this year. Interconnection programs and documentation procedures may need to be updated in order to maintain compliance.
FERC Issues Notice of Inquiry Regarding Dynamic Line Ratings
April 25, 2022
There are significant technical challenges involved in implementing Dynamic Line Ratings in the planning and operation of utility systems. Utilities should be prepared to modify their NERC compliance programs as necessary to address the potential introduction of DLR in their businesses.
NERC Recommends Approaches for Underfrequency Load Shedding Programs
February 24, 2022
In a recently released reliability guideline, NERC recommends additional approaches for Underfrequency Load Shedding (UFLS) program design to help utilities effectively consider the effects of Distributed Energy Resources (DERs). The guidance was developed to address the accelerated transition of the power system to locally installed, decarbonized resources that depend on inverters. These new technologies introduce operational controls issues into the electric grid. UFLS data gathering and analysis methodologies may require modification to address reliability risks.
NERC and FERC Recommend Protection System Commissioning Improvements
January 18, 2022
Between 18 and 36 percent of reported utility misoperations were attributed to issues that could have been detected through a properly implemented PSC.
FERC & NERC Issue Joint Report on Freeze Reliability Failures
December 15, 2021
The in-depth report outlines twenty-eight recommendations to address freeze reliability failures, including operating practices and recommendations for NERC standards modifications surrounding generator winterization and gas-electric coordination.
NERC Accelerates Additional Cold Weather Standards Changes
November 22, 2021
At its November 2021 meeting, NERC’s Board of Trustees took aggressive action to advance critical cold weather Reliability Standards. Most notably, the group approved the 2022-2024 Reliability Standards Development Plan, which prioritizes standards projects for the coming years including a resolution to include new cold weather operations, preparedness and coordination standards as high priority development projects.
PRC-002-2 Disturbance Monitoring and Reporting Standard: Initial Mandatory Implementation Plan Dates Approach
November 18, 2021
The Federal Energy Regulatory Commission approved PRC-002-2 in September, 2015. The initial due date for system studies necessary to identify locations for the collection of disturbance related data under Requirement R1 is January 1, 2017.
New Potential Compliance Standards Identified at FERC Technical Conference on Reliability
October 18, 2021
With a focus on the reliability impact of extreme weather and the shortcomings of current system planning approaches, both NERC and FERC conference participants opened the door to potential forthcoming compliance standard enhancements or changes.
FERC Approves Modifications to NERC’s Cold Weather-Related Standards
September 7, 2021
The Federal Energy Regulatory Commission has approved changes to three mandatory NERC Reliability Standards that aim to better prepare the North American power system to withstand extreme cold weather events.
NERC’s FAC-008 Guidance on Facility Ratings
May 24, 2021
FAC-008 is one of the most data-intensive standards in the NERC regulatory framework. Compliance has been difficult for many utilities. Recently, FERC made public it’s intent to address serious allegations of facility ratings violations, including a lack of rigor by one utility.
NERC and FERC Take Action on Facilities Ratings
December 4, 2020
There has been significant work across the electric industry to improve facility ratings related processes, programs, frameworks, internal controls and best practices. Yet this continues to be a challenging area for utilities, particularly from an asset management and regulatory compliance perspective.
FERC Issues Annual Report on Critical Infrastructure Protection (CIP) Reliability Audits
November 17, 2020
In its 2020 Report on CIP Reliability Audits, the Federal Energy Regulatory Commission found that most of the cybersecurity protection processes and procedures adopted by utilities met the mandatory CIP requirements for protecting the Bulk Electric System. However, there are areas for improvement.
INGAA Foundation Interview with Lauren O’Donnell
June 22, 2020
TRC’s own Lauren O’Donnell is currently the elected Chair of the INGAA Foundation. The Foundation’s primary activity is to sponsor research aimed at promoting natural gas use and safe, efficient pipeline construction and operation.
NERC Addresses Single Points of Failure in Protection Systems Among Other FERC Concerns
October 25, 2018
Under the proposed NERC TPL-001-5 standard, utilities with transmission planning responsibilities will be required to identify reliability risks related to protection system failures and take mandatory corrective action. It will be critical to have an in depth understanding of your company’s protection system settings and to perform the system studies necessary to identify where single points of failure may result in cascading tripping of transmission elements. Mitigation actions may require the installation of redundant protection systems which in turn may lead to significant substation redesign. Transmission planners and planning coordinators should begin preparing for any necessary protection system changes. TPL-001-5 Overview NERC began studying the reliability risk associated with single points of protection system failure starting in 2011 as directed in FERC Order 754. TPL-001-5 will bring significant changes for Planning Coordinators and Transmission Planners as they perform annual Planning Assessments. There is a new obligation to adequately account for the reliability risk posed by single point of protection system failure via risk-based Assessment. This reliability risk management approach will be implemented through modifications to the Category P5 Planning Event which is described in Table 1 of the TPL-001-5 standard. NERC believes that the most cost-effective Corrective Action Plans to address unacceptable system performance for the P5 Planning Events will likely be to add protection system component redundancy in certain cases. Protection system redundancy changes to address Category P5 Event system performance violations should reduce or even negate non-redundant component related risks that need to be considered in assessing transmission system performance. These risks will be identified during simulations of certain extreme events as required under the standard. TPL-001-5 also addresses reliability risks related to outage management as directed in FERC Order 786. The standard requires utility planners to consider maintenance outages of significant facilities as well as outages for critical long lead time to repair or replace equipment. Specifically, it addresses stability analysis to assess system performance for conditions expected during possible unavailability of long lead time equipment. Although it is not a NERC defined term, it is believed that a “spare equipment strategy will be sufficient to allow flexibility for utilities to conduct both steady state and stability analysis required by TPL-001-5. For example, a utility’s spare equipment strategy may include the warehousing of a replacement transformer to be installed given the failure of an in service transformer. When a utility’s spare equipment strategy may prevent major transmission equipment from being out-of-service for one year or more, this possible equipment unavailability need not be assessed as part of TPL-001-5.
Seeking a new FERC license for your hydroelectric project? Here are the 2 key questions to ask.
March 22, 2017
Across the U.S., Department of Energy data show that some 2,200 hydroelectric projects produce more than 6 percent of all the electricity we consume, which amounts to more than one-third of all power generated in 2015 from renewable sources. Operations of many existing hydroelectric projects are governed by 30- to 50-year licenses issued by the…
Dylan Achey
Dylan Achey is TRC’s Manager of Generation Engineering Services. He has been leading the effort with TRC generation clients on evaluating and providing updates/information so that clients can meet applicable NERC standards. His highly technical staff perform NERC compliance standard evaluations as well as studies for both generation and transmission clients that need assistance on technical issues concerning NERC compliance. Contact Dylan at mailto:dachey@trccompanies.com.
Jim Whitaker
Jim Whitaker, PE is Supervisor of Power Systems Studies at TRC. He has over 30 years of experience in Transmission and Distribution Planning, and Substation, Transmission and Distribution Engineering. His Transmission Planning projects include coordinating joint/regional 10-year transmission plans, generator interconnections, regional system assessments, as well as NERC compliance studies. His projects have included studies for both Utilities and Project Developers across the United States in the Eastern and Western Interconnection transmission systems as well as ERCOT. Prior to joining TRC, Jim worked for Xcel Energy, Peak Power Engineering, Tucson Electric Power and Virginia Power. Contact Jim at JWhitaker@trccompanies.com