NERC Report Highlights Concerns About Long-term Electric Reliability

Over the next ten years, the electric industry will face a number of significant emerging reliability issues. The confluence of these uses will drive a transformational change for the industry, potentially resulting in a dramatically different resource mix, a new market for emissions trading, a need for enhanced modeling, and a new risk framework built to address growing critical infrastructure and protection concerns—both physical and cyber. Each of these elements of change is critically interdependent and industry action must be closely coordinated to ensure reliability. Page 1, NERC Reliability Assessment November 2011

The North American Electric Reliability Corporation (“NERC”) recently released its 2011 Long-term Reliability Assessment. The above quote taken from the report underscores what utilities have been discussing for the last few years. However, despite an increase in conversations about these issues, phrases like significant emerging reliability issues, transformational change and dramatically different resource mix are enough to send shock waves through an industry built on stability. Until recently, everyone valued the comfort and security of the traditional stable electric utility. But something has happened. Consumer demands regularly addressed by other industries have caught up with the electric industry. Customers, shareholders, employees and even competitors want more and they want it now – more information, more options and better overall services. To my surprise, I have nicknamed 2011 “The Year of the Opt-Out” thanks to Maine and California. Yet I have the strangest feeling we have not seen anything yet. Buckle up because I think 2012 will be akin to having a front row seat on the fastest, craziest ride coming to an amusement park near you this spring.

PJM's CEO Terry Boston discusses Cyber Security and Reliability

Although PJM headquarters is just minutes from Steven & Lee's Valley Forge office, it took a recent trip to Washington, DC, for me to catch up with its President and CEO, Terry Boston. PJM manages the largest power grid in North America and the largest electricity market in the world. It is a regional transmission organization (RTO) that coordinates the movement of wholesale electricity, operates a competitive wholesale electricity market and manages the high-voltage electricity grid to ensure reliability for more than 58 million people. While attending PJM's conference, Grid 20/20: Focus on Markets, Terry made time to discuss some key issues with me.

Evers: I really appreciate you taking the time to meet with me. This is a real privilege. Terry, what is the most exciting thing about your job?

Boston: I guess dealing with all of the customers that we have. We’re up to 756 customers now and being able to have innovative markets that they can play in is probably the most exciting part. I love the technology. I’m a geek at heart. At the end of the day, the customer service function is probably the most fun part.

Evers: What keeps you up at night?

Boston: Cyber security. It has changed in the last three to four years. It’s no longer just a matter of trying to keep kids out of the system. Making sure we have security built in not bolted on to all of our networks and systems is probably the most important part of what we do. You have to realize this is a new world we’re in. We have to be very diligent, and we need resilience. Resilience is the ability to recover after a breach or intrusion.

Evers: I’m glad to hear you say that because after today’s session, I sat there thinking about distributed generation and I wondered whether or not cyber security a paradox. Is it even real? Can we ever really have cyber security? So I love the focus on the resiliency part.

Boston: That’s interesting. I was pleased to read a report that went to the President last year that basically came to the conclusion that you can’t protect against everything. The President had an interesting quote, and it goes something like this: “We have to accept the world as it is.” There will be hurricanes, there will be snowstorms like the October snowstorm, and we have to be realistic. Resiliency is about how well you recover after that big event, like Hurricane Irene or a cyber-attack.

Evers: That is a perfect transition into my next question. I heard you talk about some of extreme conditions in the past year: an earthquake, very hot days or the early snowstorm that I call the “October surprise.” As a result of the snowstorm that hit the Northeast, some top executives came under fire and one even resigned. I thought, “Is this fair? What if people could see what linemen have to go through to restore service? Often the conditions are not great.” What ideas or suggestions do you have that can help the public have realistic expectations for reliability?

Boston: First of all, there is the weather roulette wheel. You never know what you’re going to have thrown at you in terms of extreme weather. This year has been extreme as I mentioned in the meeting here today. We had an ice storm in February, tornadoes in mid-April, the hottest day of record on July 22 of this year, Hurricane Irene, Tropical Storm Lee, and then an “October surprise” as you call it. It was an unusual snowstorm. A combination of the leaves still on the trees, very wet snow and high winds. Electric distribution is going to be affected. The one thing that I’ve always done is to show the linemen out there working. Show what they have to go through to make a storm restoration work. You have to get good information out. Our staff learned from Texas where they had some problems in February in an extreme cold spell. The social media got the word out to lots of people. When they had rotating brownouts, they used social media to get to people, not just television.

Evers: You know I recently took a trip to Kenya this summer with my church. We were in remote villages six hours outside of Kenya where there is no infrastructure.

Boston: You were thankful for any grid.

Evers: Exactly. Reflecting on it caused me to think about the snowstorm and how we complain, how we’re a victim of our own really good reliability. Have we created the expectation of perfect service?

Boston: Generally speaking, worldwide you don’t have five nines — 99.999% reliable service on most of the transmission network.  We are very fortunate that we do have that here in this country. We have a digital economy, though, that runs on electricity. It is the fuel of the digital economy and it just shows the importance of what we have to do every day. And while the innovation summit we’re at here is about markets, it’s also very much about how to improve reliability. Electricity is the lifeblood of our economy and the lifelines to our homes.

Evers: Absolutely.

Boston: And it’s not fun when the power’s off.

Evers: Right. And you really can’t do anything without electricity. You need electricity just to innovate and create new products like the iPhone. 

So here is my last question. What does the man responsible for the largest power grid in the U.S. do for fun? How do you take vacation with such heavy responsibility?

Boston: We have three kids. Two on the West Coast and one on the far West Coast in Hawaii, and we travel with them. We love to go boating and water skiing. Unfortunately, the kids are so far away now and busy that we have them one at a time. But recently we went hiking in Hawaii with our son, and it was a good trip. Our daughter, Rachel, is an actress. We are very tightly tied to her career. We go to her shows. She’s coming to visit in December. She just won an award, the Emergent Talent Award in the New York Film Festival. Celebrating with her is another thing that we do for fun.

Evers: Wonderful.

Boston: I have a world class woodworking shop. I can’t think of a single tool that I do not own.

Evers: You make your own furniture and stuff like that?

Boston: I’ve made a lot of walnut furniture from kids’ cradles to grandfather clocks to some of the furniture in our house. As a matter of fact, I built a passive solar home, and I did all of the finished crown molding. The house has 6,000 square feet, and it uses about the economic equivalent of a cappuccino from Starbucks’ in terms of energy. So about less than $5.00 of electricity and energy a day. I built it in 1988, but it is designed-built to energy standards that people would be very pleased with today.

Evers: Terry, thank you so much for your time. I appreciate it.

EPA's Rules Spark Debate Over Reliability of the Electric Grid

FERC, RTOs, ISOs, NARUC, Governors and Politicians… there is no shortage of concern over the potential impact of the new Environmental Protection Agency rules regarding clean air. Will the cost of compliance force the shut down of many coal-fired power plants? Will reliability suffer as a result? These issues are at the core of the debate regarding EPA’s aggressive moves to save the environment and our health. A group of governors sent a letter to President Obama requesting he intervene to get the EPA to slow down. Utah Gov. Gary Herbert is leading the multi-state gubernatorial effort seeking a delay in the Utility MACT (Maximum Achievement Control Technology) Rule. The governors believe implementation should not occur until the impact on electricity reliability is understood.

During a recent House Subcommittee on Energy and Power hearing, FERC Commissioners provided a preliminary report on the potential retirement of coal-fired power plants. It provides an excellent, high level overview of the many environmental laws and the potential impact by region. However, the Commissioners admit FERC has not fully investigated the impact of the new rules on reliability. Chairman Wellinghoff believes RTOs, ISOs and other transmission coordinators are in the best position to provide a detailed impact analysis. Ironically in its Joint Comments to the EPA, the RTOs/ISOs are requesting a Reliability Safety Valve as a stop gap measure to delay a power plant’s compliance when necessary to preserve reliability.

My take from current analysis is that in the aggregate there will be enough generation capacity. The risks are on a more localized and regional scale – similar to the outages that occurred in the Southwest earlier this year. A combination of generation outages, derates and unseasonably cold weather lead to a power shortage forcing rolling brownouts. Hopefully enough time for careful planning and the proposed Reliability Safety Valve can help to avoid this type of event.

Meanwhile, FERC has announced it will hold a technical conference beginning November 29, 2011 to discuss policy issues related to reliability of the Bulk-Power System, including concerns that may arise in the course of compliance with EPA regulations.

FERC Chairman Wellinghoff Will Testify Before House Subcommittee on Energy and Power

On Thursday, October 13, 2011 Chairman Wellinghoff will testify on “The American Energy Initiative: Transmission Issues, Including Topics Related to the Sitting, Planning, and Allocation of Costs for Electricity Transmission Infrastructure”, before the House Energy and Commerce Subcommittee on Energy and Power. It will take place at 9:30 a.m. in room 2322 of the Rayburn House Office Building.

According to the Committee on Energy and Commerce’s internal memo, the following issues will be examined at the hearing: 

  • The need for new electricity transmission infrastructure and the barriers and challenges to siting and constructing new transmission facilities.
  • The statutory authority of DOE and FERC with respect to the siting, planning, and pricing of electricity transmission infrastructure.
  • The roles and responsibilities of the following entities with respect to the siting, planning, and pricing of electricity transmission infrastructure:

    • DOE
    • FERC
    • State Public Utility Commissions
    • Regional Transmission Organizations
    • Electric utilities
  • The difference between traditional planning and cost allocation principles and those set forth in FERC Order No. 1000.
  • The scope, purpose, and implementation of Section 216 of the Federal Power Act, including its effect on jobs and the American economy.

Given the concerns over FERC Order No. 1000, this should be an interesting hearing. In addition to Chairman Wellinghoff, other panelists include: Ms. Lauren Azar, Senior Advisor, Office of the Secretary, U.S. Department of Energy, Commissioner Greg White, Michigan Public Service Commission, Commissioner Philip B. Jones, Washington Utilities & Transportation Commission, Mr. John DiStasio, General Manager & CEO, Sacramento Municipal Utility District, Mr. Steven A. Transeth, Principal, Transeth & Associates, PLLC,  Mr. Nicholas Brown, President & CEO, Southwest Power Pool, Inc. and Mr. Joseph Welch, Chairman, President & CEO, ITC Holdings Corp.

ENBALA Discusses Grid Balance

SaLisa BerrienI recently had a chance to talk with my friend, SaLisa Berrien, Senior Director of Business Development at ENBALA Power Networks to learn more about its grid balance service, also known as regulation service.

Evers: Please explain how Grid Balance services differ from DR. 

Berrien: The difference between Regulation Service (aka Grid Balance) and Demand Response is that Grid Balance works within the operational parameters of industrial and commercial clients. There are no curtailments for extended periods of time. Grid Balance is bi-directional, meaning clients add and take load off the grid, whereas Demand Response is only taking load off the grid. Grid Balance is capacity and energy neutral. Clients do not create a new peak or use more energy than they would typically use on a daily basis.

Evers: Who can participate in this?

Berrien: Ideal network participants have large electrical equipment that operates under relatively consistent workload and has some degree of process flexibility or functional range.

Evers: Will businesses have to shut down or limit their operations?

Berrien: No. The impact of the ENBALA Power Network is seamless to the client. Our technology respects the need for each asset to fulfill its primary duty and the network is designed to have no impact on process objectives, total energy consumption or operational costs.

Evers: How do they financially benefit?

Berrien: Clients are paid for the amount of Grid Balance their assets deliver to their regional electricity system operator. Each asset’s value is dependent on process flexibility, availability, and corresponding Grid Balance demand. The more flexible an asset, the more Grid Balance it can provide, and the more money the asset will make for the client. The average payment to clients is based on historical pricing, future projections and their asset availability. The estimated annual payment per MW is $35,000-$50,000.

Evers: Can you give us an example of how it works?

Berrien: Our videos walk visitors through exactly how the ENBALA Power Network consolidates asset flexibility to provide Grid Balance to regional electricity system operators.

Evers: Thank you SaLisa for taking the time to explain Grid Balance.

NARUC and 62 Others Concerned About FERC Order 1000

NARUC recently filed a Request for Rehearing and Clarification regarding FERC’s Order 1000 and it is not alone. At least 62 others have filed either a Request for Rehearing, Clarification or both, highlighting the widespread concern over FERC’s new order that addresses Transmission Planning and Cost Allocation by Transmission Owning and Operating Public Utilities. NARUC is the National Association of Regulatory Utility Commissioners. It is the national organization of state commissions responsible for economic and safety regulation of utilities. NARUC’s greatest concern is that it believes Order 1000 fails to acknowledge the state’s role as transmission decision makers:

i. NARUC seeks clarification that Order 1000 compliance filings can and should recognize the authoritative role that State regulators play in the planning process, especially with regard to State policy initiatives and integrated resource plans.

 ii. NARUC seeks clarification that compliance filings will ensure that State regulators that are requested to pass through costs under Order 1000 will have the opportunity to evaluate and select transmission projects.

 iii. NARUC requests confirmation and clarification that Order 1000 does not intend to interfere with State siting authority, or to provide a basis for expanding FPA Section 216 backstop siting authority that has been limited by the court decisions in the Fourth and Ninth Circuit Court of Appeals. 16 U.S.C. § 824p; California Wilderness Coalition v. U.S. Dep’t of Energy, 631 F.3d 1072 (9th Cir. 2011); Piedmont Environmental Council v. F.E.R.C. 558 F.3d 304 (4th Cir. 2009). NARUC Request at pages 3-4.

The requests that poured in read like a Who’s Who in the electric industry. Filings came from state commissions, RTOs, ISOs, the Rural Electric Coop Association and many utilities. We previously reported that Commission staff will convene three informational conferences to discuss the requirements of Order No. 1000. The notice says there will be an opportunity to ask questions, making for a few interesting and possibly long couple of days. Based on these filings, if you plan to attend in person, get there early. I have a feeling the Commission Meeting Room will be packed.

FERC Schedules Informational Conference on Order No. 1000

Last week, FERC  issued a notice that it will conduct  several informational conferences regarding Order No. 1000 on September 12 and 13, 2011, to address compliance issues. FERC will kick off the series on September 12, 2011, starting at 1 pm focusing on compliance issues related to Regional Transmission Organizations (RTOs) and Independent System Operators (ISOs). The morning conference on September 13, 2011, from 9 a.m. to noon will discuss compliance issues related to non-RTO/ISO regions in the Eastern Interconnection, and starting at 1 pm on September 13, 2011, the focus will shift to addressing concerns regarding  compliance issues related to non-RTO/ISO regions in the Western Interconnection.

The conferences will be held at:
Federal Energy Regulatory Commission
Commission Meeting Room
888 First Street, NE
Washington, DC 20426

Interested parties can participate  by phone for free but registration is required. Registration is not required to attend the informational conferences in-person or to watch the webcast. Order No. 1000 becomes effective  on October 11, 2011.  Here is a summary of the compliance filing requirements issued by FERC.

FERC Order No. 1000

The Federal Energy Regulatory Commission (FERC) recently issued Order No. 1000 whose purpose is to enhance the grid’s ability to support wholesale power markets by ensuring transmission services are provided at just and reasonable rates. Order No. 1000 builds on FERC’s open access reforms of Order No. 888 (1996) and the planning reforms of Order No. 890 (2007). FERC hopes the changes will provide consumers with greater access to efficient, low-cost electricity. The Order requires:

  • public utility transmission providers to improve transmission planning processes and allocate costs for new transmission facilities to beneficiaries of those facilities
  • alignment of  transmission planning and cost allocation
  • coordination between pairs of neighboring transmission planning regions
  • development of regional and interregional cost allocation methods
  • removal from FERC-approved tariffs and agreements and a federal right of first refusal for transmission facilities selected in a regional transmission plan for purposes of cost allocation, subject to certain limitation

FERC also issued a presentation that provides a nice summary of this new rule.

FERC seeks Comments on Energy Storage and Ancillary Services

Chairman Wellinghoff stressed that ancillary services are broader than energy storage and he made it clear the development of a vibrant ancillary services market is an important element of the Commission’s Notice of Inquiry (NOI). Commissioner Norris issued a statement highlighting the need to make sure regulatory policies and practices do not stunt the growth of energy storage technologies. Citing an EPRI study, Commissioner Norris points out energy storage systems “can move energy through time, providing it when and where it is needed.” This feature carries greater significance as we seek to connect variable renewable energy resources to the electric grid.

Energy storage presents numerous challenges for regulators because electric energy storage is the chameleon of the smart grid. It blends in where needed, able to resemble many smart grid components. It’s generation, it’s transmission, it’s a storage device (just to name a few). So how does the jack-of-all-trades get fairly compensated? Will it be forced to declare a major? Or will it be allowed to hop around the grid, providing assistance as necessary to stabilize the grid, hopefully providing lower prices to customers because of its flexible nature?

The NOI is 44 pages long and there are many questions to be answered as FERC seeks to encourage the development of a robust ancillary services market, as well as electric storage technologies. Below are a few random samples:

  • If the Commission retains the requirement of a formal market power study as described in Order No. 888 and Ocean Vista for third party provision of ancillary services to transmission providers, what specific information and tools would be useful to the development of these studies?
  • Should the Commission establish a capacity threshold to determine whether an entity has market power so that an entity that owns or controls less than a threshold amount of capacity would be presumed to lack market power in the market for provision of ancillary services? If so, what would be an appropriate level for this threshold?
  • Should the cost of new energy storage plant and equipment be recorded within existing utility plant functional classifications (i.e., transmission, distribution, and production) or should a new functional classification be created for energy storage? What are the benefits of one approach over the other? If the Commission were to create a new classification(s), please comment on the specific plant accounts and account instructions that would be created or modified for inclusion in the new asset class.

Comments are due by August 22, 2011.

Entergy Says Joining MISO Will Save Customers Over $1 Billion

Yesterday, Entergy announced plans to join the Midwest Independent System Operator (MISO). The New Orleans based utility had been evaluating its options regarding the best management structure for its transmission system, including proposals from the Southwest Power Pool (SPP) and MISO. The study done by Entergy included independent analysis of the savings and actual proposals from SPP and MISO on how certain costs would be shared. This evaluation summary shows that joining MISO could save customers more than $1 billion in power production costs for the 2013 to 2022 timeframe. While both MISO and SPP were assumed to have a Day 2 market, an advantage of joining MISO is that it has an operating Day 2 market today:

The analysis clearly shows there are compelling benefits to joining a regional transmission organization with substantial scale and a Day 2 market,” said J. Wayne Leonard, Entergy’s chairman and chief executive officer. He added, “An organized market design based upon centralized auction markets creates greater efficiencies than one that relies upon bilateral trading, particularly in electricity markets where some congestion is always present. We look forward to discussing in detail the benefits of joining MISO with regulators, their staffs and other stakeholders in the months ahead. As the analysis showed, MISO’s substantial scale and established market made it the clear choice for customer benefits.
Entergy Press Release, April 25, 2011

Given the anticipated departure of FirstEnergy and Duke Ohio, this decision by Entergy must have MISO execs doing the Second Line in Carmel. According to MISO’s news release, the integration of Entergy will create the largest RTO in the US. MISO is presenting to two half-day seminars on May 18 and 19, 2011, for those interested in meeting its leadership and learning more about the organization, its markets and its processes, including optional tours of its Carmel, IN control room. Given the concern about grid security, I question the appropriateness of an open invitation to view MISO’s control room. Hopefully the registration process is designed to carefully screen those allowed to tour the control room, although the invitation appears to be to any interested party.

Now that Entergy has made its decision, how hot will the battle between MISO and SPP over capacity sharing get? Initially, MISO requested expedited treatment to facilitate a decision by Entergy. Several parties opposed special treatment. FERC issued a notice stating that protests and motions are due May 9, 2011.


Update
: We were recently contacted by a representative from MISO regarding the control room concerns who provided the following information:
 
"In response to your posting on the 26th entitled “Entergy Says Joining MISO Will Save Customers Over $1 Billion” regarding an “open invitation to view MISO’s control room,” I’d like to provide clarity on this matter. While the MISO informational seminars those days are open, tours of the Control Room are subject to the company’s Tour Policy and Security requirements. Tours are conducted from the Overlook, not the control room floor, and are granted on a case-by-case basis with attendees being notified by MISO whether a Control Room tour has been approved. No power marketers are allowed to tour MISO’s operations." – MISO Representative, May 11, 2011
 
I thank MISO for this update.

DOE Funding Opportunity for Solar Energy Grid Integration Systems

As part of the Department of Energy's SunShot Initiative, on April 8, 2011, Energy Secretary Steven Chu announced approximately $170 million in available funding over the next three years to support a range of solar photovoltaic (PV) technology development. Close to $40 million will be awarded to support the integration of solar energy onto the electric grid. This project will be known as the Solar Energy Grid Integration Systems (SEGIS) – Advanced Concepts. The funding will promote a smarter grid, supporting projects focused on improved energy storage technologies and better system functionality, high voltage systems that reduce the overall installed costs associated with balance of systems components costs for installations and projects focused on technologies like micro-inverters that are capable of harvesting more energy from the sun.

Additionally, projects funded will demonstrate the feasibility of these new technologies in use and will directly support the objectives of the SunShot Initiative, which has a goal to reduce the total costs, including installation of solar energy systems by 75 percent to roughly $1 per watt.

The figure below demonstrates the possibility.

Thumbnail image for centralizedinverter.jpg

There are two topics that may be submitted under this FOA: 

  • Topic 1: Smart-Grid Functionality
  • Topic 2: Using Power Electronics to Address Balance of System Costs

Preliminary applications are due May 9, 2011.

EnerNOC wins Declaratory Judgment in PJM Battle

On February 22, 2011, demand side management (“DSM”) company EnerNOC, filed a Petition for Declaratory Order requesting that FERC find that EnerNOC and other companies may continue to register customers and settle under PJM’s GLD baseline methodology as they have in previous periods without enforcement action being threatened. GLD is one of three baseline methods prescribed in the PJM business rules for measuring event compliance. GLD is achieved by a customer reducing its load by a predetermined amount (i.e., by the Guaranteed Load Drop or GLD). PJM Tariff, Attachment DD, section H.

EnerNOC’s filing was in response to a joint statement issued by PJM and Monitoring Analytics, LLC, PJM’s Independent Market Monitor (“IMM”), that addresses a double counting issue. The Joint Statement says in part:

The following example illustrates the issue:

  1.  5,000 kW PLC (10/11 Delivery Year) – PLC represents how much capacity has been purchased for customer to ensure reliability. Since the customer actively reduces load during the peaks (“peakshaver”) the PLC is significantly lower than normal amount of load for the customer, which is 28,000 kW.
  2. 4,000 kW Nominated Installed Capacity – CSP commitment for quantity of customer load reduction when PJM needs during an emergency. The nominated amount may not exceed the PLC based on current market rules.
  3. Real time estimated load reduction = 25,000 kW measured as the difference between a baseline estimate based on recent days, 28,000 kW, less actual consumption during the event, or 3,000 kW.
  4. 21,000 kW over compliance – CSP resource will be deemed to have met nominated Installed Capacity commitment of 4,000 kW AND also receive an additional 21,000 kW of over compliance credit which may be used to offset resources within the zone than did not perform.

In addition to substantially overstating the demand side savings and overpaying CSPs, this behavior also provides a non-competitive advantage to CSPs in attracting customers. A CSP that is aware of this Program discrepancy may identify large customers with managed PLCs and offer such customers out of market revenues for any load reduction in excess of the nominated amount. This is profitable because once such a customer has been procured, the CSP has the ability to sign up customers in the same zone with no or only limited ability to reduce load when called upon and receive capacity revenues based on the apparent over compliance of the customers with managed PLCs.

In its Order, FERC states that the Commission does not intend to institute any enforcement actions against EnerNOC (or other similarly situated ARCs) for registering customers in good faith and settling under the GLD baseline methodology. Good faith participation in the PJM load management programs, including accurate customer GLD registration and aggregation during emergency events, is permitted. The Commission goes on to warn that this finding here does not exempt from challenge conduct prohibited under section 1c.2 of the Commission’s regulations. 18 C.F.R. § 1c.2 (2010).

FERC to hold Smart Grid Technical Conference January 31

On December 21, the Federal Energy Regulatory Commission ("FERC") announced plans to hold an additional Smart Grid technical conference on January 31, 2011 at 1 p.m. EST at FERC's headquarters at 888 First Street, Washington, DC, 20426. According to the notice, the purpose of the technical conference is to assist FERC in making a determination of whether there is “sufficient consensus” that the five families of standards posted by the National Institute of Standards and Technology ("NIST") and included in this proceeding are ready for Commission consideration in a rulemaking proceeding, as directed by section 1305(d) of the Energy Independence and Security Act of 2007. The conference is open to the public and those not able to attend will be able to listen via webcast. FERC held its first technical conference on the five families of standards last November in Atlanta, GA.

NIST has posted technical narrative summaries of the standards to assist FERC and other interested Smart Grid stakeholders. These five IEC standards are concerned with the structure of messages exchanged within and across Smart Grid domains and are fundamental to interoperability:

  • IEC 61970 and IEC 61968: Provide a Common Information Model (CIM) necessary for exchanges of data between devices and networks, primarily in the transmission (IEC 61970) and distribution (lEC 61968) domains.
  • IEC 61850: Facilitates substation automation and communication as well as interoperability through a common data format.
  • IEC 60870-6: Facilitates exchanges of information between control centers. 
  • IEC 62351: Addresses the cyber security of the communication protocols defined by the preceding IEC standards.

George Arnold, national coordinator for smart grid interoperability, states in a letter to FERC, these standards will be updated as Smart Grid requirements evolve.