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*Editorial Calendar is tentative and subject to change
2025 Editorial Calendar
Issue
Features
Bonus Distributions
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January/ February
WAMS/WACS/WAMPAC Field’s Lessons
Supplemental Issue: Grid Edge Technologies Conference Special Issue
The integration of variable renewable energy (VRE) sources into the modern-day power grid is growing fast, driven by global environmental and economic concerns, renewable energy subsidies, and deregulation in the energy sectors.
Title: Wide Area Monitoring Protection and Control Supported Operation and Planning in the Ecuadorian Power System.
Abstract: The article summarizes the experiences of the Ecuadorian National Electricity Operator CENACE regarding the implementation of WAMS and the different applications that have been developed to improve the power system operations. After implementing the WAMS, the data that are recorded and stored by WAMS are first analyzed by post-operative processes in order to learn about the phenomena existing in the power system and identifying vulnerability patterns. Afterwards, these analyses allow defining proper planning strategies to improve the power system behavior. Finally, all the discovered knowledge gives the operators enough information to structure adequate early warning and situational awareness strategies that allow them to response in real time.
Title: Enhancing Synchrophasor Reliability through Network Based Time Synchronization: The KEPCO’s Practical Approach.
Abstract: The article overviews a network-based concept for time synchronization, pointing out the improvements on the reliability of PMU measurements. Both SCADA and WAMS typically depend on GPS for time synchronization, but GPS is vulnerable to jamming and spoofing. South Korea, in particular, faces challenges due to frequent GPS signal disruptions from North Korea and geographical interference in mountainous areas. These issues threaten grid stability by affecting time synchronization. To address this, Korea Electric Power Corporation (KEPCO) implemented network-based time synchronization, using atomic clocks and optical communication lines to maintain accurate timing across substations. This method reduces reliance on GPS and enhances system reliability, while keeping costs manageable by leveraging existing infrastructure. GPS remains a backup solution. This approach is expected to improve the accuracy and availability of WAMS in challenging environments like South Korea.
Title: Enhancing the Operation of the Hellenic Transmission System through Wide Area Monitoring and Control.
Abstract: The article presents an augmented WAMPAC system with improved and new services. It summarizes the lessons learned during the demonstration including the quantifiable outcomes derived from a 200-day trial with six services running in parallel. These outcomes highlight the benefits that can be achieved through the deployment of the proposed WAMPAC system. Finally, based on the experience gained from the demonstration, a policy road map is discussed.
Space Reservation: 12/02/2024
Materials: 12/05/2024
March/April
FACTS/HVDC Technologies
The integration of variable renewable energy (VRE) sources into the modern-day power grid is growing fast, driven by global environmental and economic concerns, renewable energy subsidies, and deregulation in the energy sectors.
Title: Wide Area Monitoring Protection and Control Supported Operation and Planning in the Ecuadorian Power System.
Abstract: The article summarizes the experiences of the Ecuadorian National Electricity Operator CENACE regarding the implementation of WAMS and the different applications that have been developed to improve the power system operations. After implementing the WAMS, the data that are recorded and stored by WAMS are first analyzed by post-operative processes in order to learn about the phenomena existing in the power system and identifying vulnerability patterns. Afterwards, these analyses allow defining proper planning strategies to improve the power system behavior. Finally, all the discovered knowledge gives the operators enough information to structure adequate early warning and situational awareness strategies that allow them to response in real time.
Title: Enhancing Synchrophasor Reliability through Network Based Time Synchronization: The KEPCO’s Practical Approach.
Abstract: The article overviews a network-based concept for time synchronization, pointing out the improvements on the reliability of PMU measurements. Both SCADA and WAMS typically depend on GPS for time synchronization, but GPS is vulnerable to jamming and spoofing. South Korea, in particular, faces challenges due to frequent GPS signal disruptions from North Korea and geographical interference in mountainous areas. These issues threaten grid stability by affecting time synchronization. To address this, Korea Electric Power Corporation (KEPCO) implemented network-based time synchronization, using atomic clocks and optical communication lines to maintain accurate timing across substations. This method reduces reliance on GPS and enhances system reliability, while keeping costs manageable by leveraging existing infrastructure. GPS remains a backup solution. This approach is expected to improve the accuracy and availability of WAMS in challenging environments like South Korea.
Title: Enhancing the Operation of the Hellenic Transmission System through Wide Area Monitoring and Control.
Abstract: The article presents an augmented WAMPAC system with improved and new services. It summarizes the lessons learned during the demonstration including the quantifiable outcomes derived from a 200-day trial with six services running in parallel. These outcomes highlight the benefits that can be achieved through the deployment of the proposed WAMPAC system. Finally, based on the experience gained from the demonstration, a policy road map is discussed.
Space Reservation: 1/15/2025
Materials: 01/17/2025
May/June
Scheduling High RE-Systems
The integration of variable renewable energy (VRE) sources into the modern-day power grid is growing fast, driven by global environmental and economic concerns, renewable energy subsidies, and deregulation in the energy sectors. However, the inherent intermittency and variability of power generation from VREs may cause a serious problem for supply-demand deviations without proper coordination with energy storage and dispatchable generation units. On the other hand, power generation from conventional dispatchable generation units is at the expense of significant operating cost. To address these issues, optimally coordinated scheduling and economic load dispatch for look-ahead operation is a problem of paramount importance for power grids with a massive share of VREs. The generation scheduling and operation in the electricity market across the globe most of the time are tackled in day-ahead, intraday, and real-time market operations.
Meanwhile, the optimal coordinated generation scheduling problem for look-ahead (hour-ahead, day-ahead, week-ahead, etc.) power system operation is an ongoing research topic for various researchers, independent supply operators, and utility operators. Non-coordinated scheduling and operation of the power system under the proliferated penetration of VREs may cause a serious grid imbalance and reliability issues for the look-ahead power system operation. In this regard, the general overview for scheduling of generation in a power system with high penetration of renewable energy systems will address the state-of-the-art in power system scheduling, VRE, and electricity demand forecasting, optimization solutions, and advancements to robust optimal scheduling.
Furthermore, accurate prediction and modeling of generation from renewables is an essential part of generation scheduling in the modern-day power grids. Thus, this special issue also will cover the effective prediction models for electricity demand and generation from renewables for look-ahead power system operation.
Title: How can energy communities be part of the urban energy transition?
Abstract: The goal of achieving global climate neutrality and transitioning to sustainable energy is emphasized, with a focus on cities, energy production, and consumption. Europe aims to assist 100 cities in achieving climate neutrality by 2030 through the Mission Climate Neutral and Smart Cities initiative, serving as models for others by 2050. Efforts to improve the efficiency of existing power plants and transition to cleaner fossil fuel sources are crucial due to the ongoing high consumption rates. The increasing importance of renewable sources like solar, wind, and hydroelectric power is widely recognized, alongside gradual electrification of various sectors. In addition to research into hydrogen and nuclear energy, which is seen as vital for a diversified energy strategy, energy communities could cover up to 20% of urban energy consumption by 2030:this highlights the importance of electrical systems and smart grids, which constitute the necessary infrastructure.
Title: Unlocking the Potential of Renewables through Flexible Transmission Grids
Abstract: This article discusses the opportunities and challenges of utilizing energy storage as a non-wire transmission solution (NWS) to enable a cost-effective integration of large amounts of intermittent renewables. A key challenge facing NWS is the need for a long-duration storage capacity (greater than the typical 4 hours and in the range of 5–9 hours), which renders most solutions uneconomical. To address these challenges, this article proposes to extend the well-practiced framework of facility emergency ratings in terms of the long-term emergency (LTE) loading limits commonly designed for 4–12 hours and the short-term emergency (STE) loading limits typically designed for 15 minutes to also include a new rating (SME) suitable for sub-minute emergency operations. This new framework is more suited to smart and fast-acting technologies such as flexible AC transmission (FACTs), grid-enhancing technologies (GETs), and battery energy storage solutions (BESS). As demonstrated through illustrative examples, leveraging the rapid response of inverter-based resources (IBRs) along with investments in operational IT technologies and smart controls, transmission transfer capabilities can be increased without the need for multi-hour storage capacity.
Title: Look-Ahead Coordinated Generation Scheduling with Massive Share of VREs: Optimization Solution Methods, Challenges, and Trends
Abstract: This paper focuses on the growing challenge of integrating Variable Renewable Energy (VRE) sources, such as wind and solar, into power grids. With the global shift towards decarbonization, countries like South Korea have implemented policies to promote renewable energy, such as the Renewable Portfolio Standards (RPS). The paper discusses the technical and operational difficulties posed by VREs, such as intermittency, unpredictability, and grid stability concerns. It emphasizes the need for advanced forecasting methods, optimization techniques, and coordinated generation scheduling to balance the power supply from both renewable and conventional sources. By improving forecasting accuracy and integrating energy storage solutions, power grids can enhance flexibility, reduce operational costs, and ensure stability. This paper also highlights ongoing trends, including the use of machine learning and deep learning for forecasting, and the need for real-time re-dispatch to address uncertainties in electricity demand and VRE generation. Ultimately, the paper suggests that coordinated scheduling can optimize the use of renewable energy while maintaining grid reliability and minimizing costs, contributing to global carbon neutrality goals.
Space Reservation: 3/20/2025
Materials: 03/25/2025
July/August
EMT and Real-Time Simulation of T&D Grids
Electromagnetic transient (EMT) modelling and simulation has been increasingly used in power systems around the world to allow for a more accurate assessment of the dynamic response of individual plant and the overall power system with focus on scenarios with a high share of power electronic interfaced devices. However, similar to any other simulation platform, EMT programs cannot be considered without any limitations. As such a thorough understanding of the capabilities, limitations and enablers for broader uptake are essential as discussed in the first article. Existing and prospective methodologies for efficient development of wide-area EMT network models comprising up to several thousand nodes is discussed in the second article. This is followed by another article presenting the use of wide-area EMT modelling by various system operators across the world. Since a key value proposition for increased use of EMT modelling is to gain higher accuracy compared to conventional dynamic simulation tools, it is important to ensure that both the plant and overall power system models are sufficiently accurate as discussed in the fourth article. To date the key application of EMT modelling has been grid interconnection of inverter-based resources as discussed in the fifth article which also highlights challenges encountered and initiatives to address them. With increasing uptake of power electronic interfaced loads, the overall EMT model of the power system cannot be considered complete or accurate if it is not complemented by sufficiently detailed load models, commensurate with those used for
generators and the network, as discussed in the sixth article.
Title: Modern Approaches for Large-Scale Electromagnetic Transient (EMT) Modelling and Simulation
Abstract: This paper describes modern methods that are pursued in order to enable EMT simulation of large power systems approaching sizes of thousands of nodes. The paper describessolutions such as (i) co-simulation, where multiple solvers are assigned to solve specificareas of a large network in different detail, (ii) multi-solver simulation (e.g., dynamic phasorsand EMT), and (iii) network equivalents, wherein portions of a large network are replacedwith a computationally efficient equivalent. The paper explains the merits as well as limitations of these methods and points out contemporary directions for further research and development. Large-scale EMT-type simulation using real-time platforms is also addressed.
Title: Large Scale EMT Model Examples for High Share IBR systems
Abstract: The use of electromagnetic-transient (EMT) models to study the behavior of power systems with high share of IBR systems has become increasingly vital to ensure power system security over the last decade. Multiple system operators (SO) around the world have developed large scale EMT models to capture the interactions between the grid and IBR systems and between multiple IBR systems themselves. Four different SO, from Australia, Denmark, Finland and Texas, United States of America (USA), present learnings and examples of their methodologies for creating, maintaining and using large scale EMT models to ensure ongoing system security across their respective networks.
Title: EMT Modelling for Connection Studies
Abstract: The article provides an overview of the role of electromagnetic transient (EMT) modeling in power system interconnection process of newly connecting inverter-based resources (IBRs). EMT modeling has become vital for wider-area simulations due to the dynamic behavior of modern grids with high shares of IBRs. Use of EMT modeling during interconnection process ensures compliance with grid codes, identifies potential stability issues, and supports informed decision-making during the interconnection process, particularly for weak grid areas. The article also highlights the importance of collecting EMT models during interconnection process and ensuring these models reflect the plant as built in the field.
Space Reservation: 05/21/2025
Materials: 05/23/2025
September/ October
Grid Energy Stresses due to Crypto Mining
This special issue on Grid industrial demand of the future—large, elastic, and concentrated is to provide insight into the challenges surrounding the economics of large flexible loads, how flexible load behavior is orchestrated by the operator of the asset and managed by the grid operator, and how grid operators will need to change their planning methodologies to support this new type of customer. Covered will be articles that discuss how flexible load operators determine when and how to curtail, how grid operators are planning to address the impacts of voltage ride through due to large loads, potential energy market economic impacts and the value proposition of flexible load on wholesale markets, forecasting resource adequacy, and other planning considerations of large flexible loads with minimal grid operator coordination. This special issue will also cover “Behind-the-Meter (power-to-X)” co-located offtake structures as a model for renewable development or curtailment reduction. From a deeper perspective this issue covers five articles from bitcoin mining economics as a prototype of flexible load with transparent marginal revenue and minimal friction to curtail in real-time to a load owner’s perspective of developing, interconnecting, constructing, owning and managing a large flexible load in a market, including hydrogen and ammonia electrolysis, cooperation with grid operators and planners, transmission entities, and other regulatory entities to proper modeling of newer loads like data centers and crypto mining facilities for dynamic studies that play a crucial role in enabling transmission planners and operators analyze the reliability of the grid. A final article also covers potential economic impacts on putting large, price-sensitive loads on different places on the system and impacts generator revenue, improves generation curtailments and how it impacts retail pricing. As datacenter growth driven by AI, bitcoin miners, hydrogen, and ammonia facilities continue to fill up load interconnection queues and be announced through press releases, the challenges of planning, interconnecting, and operating/managing a grid with these assets are becoming more apparent. Hopefully this collection of articles can lead the industry toward helpful outcomes by broadening understanding of the challenges, and opportunities, provided by these large loads.
Title: Flexible Load and The Electricity Grid – A Bitcoin Story
Abstract: In this article we explore fundamental attributes of electricity markets and how flexible loads such as bitcoin miners interact with those markets today. Over the past few years, a strange electricity customer has taken the industry by storm—bitcoin miners. In 2021, the nascent bitcoin mining industry experienced a mass exodus from China following a government crackdown, resulting in the shipment of massive amounts of servers and opportunity to the United States. Savvy investors flocked to plug in servers in deregulated electricity markets to capture recently created price distortions in spot electricity pricing, or to regulated markets with friendly time-of-use tariffs.
The bitcoin “mines” themselves look more like datacenter infrastructure than any traditional mine. Large superstructures housing rows of racks of servers, sometimes immersed in fluid, or for more desolate or rapidly deployed locations, mobile shipping containers complete with all the electrical and IT infrastructure needed to operate. Some of these ventures flourished and were a net good for their community by providing new revenue to suppliers, revenue to struggling co-located generation assets, tax revenue to communities and opportunities for skilled labor that had previously been scarce. Other ventures proved to be absolute failures, or worse—fraudulent. Whether it was through taking on huge exposure and leaving before paying and before power suppliers understood the risk, or through taking advantage of small utilities’ infrastructure build-out, excited about the idea of a large consumer to replace their dwindling customer base, only again to leave before paying the bill. Underpinning these bitcoin mining ventures and the large electrical demand they bring to a community is a relatively new term—flexibility.
Title: Texas Loads Ride Toward Grid Stability -Voltage Ride Through of Large Power Electronic Loads in Texas
Abstract: ERCOT, the independent system operator (ISO) for the Texas region, USA, continuously assesses the reliability of its grid. With the increase of large loads interconnecting to the electric grid, including large data centers and crypto mining centers, the grid reliability is being tested under new stressed scenarios. Depending on the size of the load, its geographical location, its ramping up/down controls and network conditions, the load’s capability for voltage ride-through (VRT) and frequency ride-through (FRT) during severe events could degrade reliability. Additionally, such loads could introduce new vulnerabilities to sub-synchronous oscillations (SSO) or sub-synchronous control interactions (SSCI). This article will review realistic critical scenarios that require planning or operation level studies to assess reliability. These assessments will consider VRT and FRT tests with updated models, evaluations of large load on regions with known stability constraints, system impact of co-located load with generation, SSO/SSCI vulnerabilities and other similar network scenarios.
Title: Modeling of Emerging Loads for Transmission Reliability Studies
Abstract: Recent load forecasts from most utilities have indicated a significant growth in system load driven by the adoption of emerging electrical loads like data centers, hydrogen electrolyzers, electrification of the transportation etc. While dynamic modeling of loads has been recognized as an important part of transmission reliability assessment, existing practices may need to evolve to better capture the impact of emerging loads. Facilities like data centers and hydrogen electrolysis plants are significantly larger in size as compared to traditional industrial facilities and mostly consist of highly controllable power electronic devices as compared to direct connected motors. Therefore, it is important to revisit the topic of model development with these considerations in mind. To that end, this article provides an overview of modeling methods and practices as it pertains to development of load models for large emerging load facilities including guidance on the critical aspects a model development process should consider. Furthermore, the article also covers Australian Electricity Market Operator’s (AEMO’s) perspective on modeling of large load facilities and provides a glimpse of the guidelines AEMO has set forth to ensure proper models are available for transmission reliability studies
Space Reservation: 07/22/2025
Materials: 07/25/2025
November/ December
Flexibility for Resilience ISGAN/IEA
Targeting a sustainable, secure and competitive energy supply requires for more effective, efficient and flexible solutions. R&I actions are needed to make the energy supply side cleaner, more secure, and competitive, improving the performance and reliability of a broad portfolio of renewable energy solutions, in line with societal needs and preferences. The International Smart Grid Network (ISGAN) strives for the accelerated development and deployment around the world of smarter, cleaner electricity grids—as in “smart grids.” In coordination with the International Energy Agency (IEA), Clean Energy Ministerial (CEM), and other strategic partners, ISGAN is committed to identifying emerging advances, sharing best practices, and raising high-level government awareness on the value and impact of smarter grids. Established in 2011, ISGAN facilitates dynamic knowledge exchange, technical assistance, peer review, and activity coordination among its participants and stakeholders. Policy analysis and recommendations are among the top priorities. This issue of IEEE Power &Energy Magazine contains the input from two ISGAN Working Groups 6 (WG 6) – Power Transmission and distribution systems, and WG9 Flexibility Markets establishing long-term visions for the development of the future sustainable power systems and markets. To create and project the visions of flexibility implementation, WG 6 clarifies system-related challenges, with emphasis on the technologies, and WG9 focuses on different market solutions and tools, where both provides an input for R&I and policies, contributing to the development and implementation.
Title: Innovation Challenges, Use Cases, and Technologies for Distribution GridFlexibility
Abstract: Increasing penetration of distributed renewable energy sources, electrification of the energy end-uses and the uptake of electric vehicles represent relevant challenges to the way of operating low and medium voltage networks. To cope with them, grid operation procedures and responsibilities of system operators are evolving. In this view, the development of innovative solutions for grid management and operation is becoming increasingly important while infrastructure investments, including those in digital technologies, are a key option in order to face the mentioned challenges and to enhance the role of Distribution System Operators (DSO) to support the security and adequacy of the entire energy system.
This article summarizes some of the results obtained by the Flexibility Lab initiative launched by Enel and developed by RSE and EPRI. It focuses on the broad theme of distribution systems flexibility and the needed interactions and coordination of system level actors with Distributed Energy Resources (DERs) installed at low and medium voltage levels, such as photovoltaic plants with or without storage, Electric Vehicles (EVs), heat pumps or air conditioning systems. To be more effective, these topics have been addressed by three working groups: Observability and controllability, Distribution Energy Resources Management Systems (DERMS) and market platform, and e-Mobility.
Title: Co-operation of Converter Interfaced Devices for Enhancing Flexibility, Efficiency and Resilience
Abstract: The emerging penetration of converter-based generation through offshore wind turbines and battery energy storage systems (BESS) aims to reduce carbon emissions as much as possible in modern Offshore Oil and Gas Platforms (OOGPs). This complex system represents a unique and challenging test case for studies related to power system flexibility and resilience. The new onboard converter interfaced devices together ensure a stable and reliable power supply to these isolated grids. They can also provide various grid services, including voltage regulation, frequency response, reactive power control and peak shaving. Moreover, in the event of a disruption or an outage, BESS converters can help to restore power rapidly, thus enhancing power system resilience. Although the converter-based generation transition is theoretically feasible, it poses many practical challenges as it is nearly impossible to optimally design these systems without considering their co-operation. It can be established that enhanced flexibility and resilience on modern OOGPs is possible only with the co-operation of power electronic converters, such as those of variable frequency drives, wind turbines, BESS, and active-power filters. By working together, these technologies can maximize their exploitability, enhance efficiency of gas turbine generators and/or reduce the need for them, and increase resilience by integrating BESS endowed with grid-forming capability. Hence, this paper explores diverse case study scenarios, providing valuable insights into the necessity and opportunities for the co-operation among different devices on the platform. This marks a step forward in OOGP’s green transition, potentially serving as a useful paradigm for several other autonomous systems.
Title: Local Flexibility Markets: Coordination of Distributed Flexibility Resources
Abstract: Distributed Energy Resources (DERs) have emerged as a fundamental component in modern energy systems, promoting decentralization, sustainability, and resilience. Establishing flexible markets has become crucial in the global transition to a low-carbon future to optimize the integration and coordinate the utilization of DERs. This article explores and compares the experiences and innovations in developing flexibility markets in EU and the US. In Europe, the energy landscape is characterized by the dominance of renewable energy sources, and the integration of DERs has emerged as a key priority. Several countries have embraced ambitious renewable energy targets, resulting in a notable increase in distributed generation, such as solar panels and wind turbines. The deployment of smart grids and advanced metering infrastructure roll-out has facilitated the establishment of flexibility markets, which provide incentives for market participants to trade flexibility services such as demand response and short-term energy storage. These markets play a crucial role in coordinating flexible assets to support grid operations and effectively adapting to the variable nature of renewable generation.
Similarly, the United States has significantly progressed in DER deployment and flexibility market development. States like California and New York have adopted clean energy policies and frameworks that incentivize DER integration. This has fostered the emergence of innovative business models and technologies such as virtual power plants, microgrids, and energy community initiatives. Regulatory reforms have also played a vital role, enabling the creation of wholesale and retail markets for DER flexibility, fostering competition and encouraging innovation.
Space Reservation: 09/18/2025
Materials: 09/23/2025
Topics are tentative and subject to change.
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