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Stationary Energy Storage Systems

Should every campus building generate its own power? Sustainability workgroups are vulnerable to speculative hype about net-zero buildings and microgrids. We remind sustainability trendsniffers that the central feature of a distributed energy resource–the eyesore known as the university steam plant–delivers most of the economic benefit of a microgrid. [Comments on Second Draft due April 29th] #StandardsMassachusetts

“M. van Marum. Tweede vervolg der proefneemingen gedaan met Teyler’s electrizeer-machine, 1795” | An early energy storage device | Massachusetts Institute of Technology Libraries

We have been following the developmental trajectory of a new NFPA regulatory product — NFPA 855 Standard for the Installation of Stationary Energy Storage Systems — a document with ambitions to formalize the fire safety landscape of the central feature of campus microgrids by setting criteria for minimizing the hazards associated with energy storage systems.

The fire safety of electric vehicles and the companion storage units for solar and wind power systems has been elevated in recent years with incidents with high public visibility.  The education industry needs to contribute ideas and data to what we call the emergent #SmartCampus;an electrotechnical transformation — both as a provider of new knowledge and as a user of the new knowledge.

Transcripts of technical deliberation are linked below:

2026 Public Input Report (705 pages) § 2026 Second Draft Meeting Agenda (912 pages)

Comment on the 2026 revision received by March 27, 2025 will be heard at the NFPA June 2025 Expo through NFPA’s NITMAM process.

University of Michigan | Average daily electrical load across all Ann Arbor campuses is on the order of 100 megawatts

A fair question to ask: “How is NFPA 855 going to establish the standard of care any better than the standard of care discovered and promulgated in the NFPA 70-series and the often-paired documents NFPA 110 and NFPA 111?”  (As you read the transcript of the proceedings you can see the committee tip-toeing around prospective overlaps and conflicts; never a first choice).

Suffice to say, the NFPA Standards Council has due process requirements for new committee projects and, obviously, that criteria has been met.   Market demand presents an opportunity to assemble a new committee with fresh, with new voices funded by a fresh set of stakeholders who, because they are more accustomed to advocacy in open-source and consortia standards development platforms, might have not been involved in the  more rigorous standards development processes of ANSI accredited standards developing organizations — specifically the NFPA, whose members are usually found at the top of organization charts in state and local jurisdictions.  For example we find UBER — the ride sharing company — on the technical committee.  We find another voice from Tesla Motors.  These companies are centered in an industry that does not have the tradition of leading practice discovery and promulgation that the building industry has had for the better part of two hundred years.

Our interest in this standard lies on both sides of the education industry — i.e. the academic research side and the business side.  For all practical purposes, the most credible, multi-dimensional and effective voice for lowering #TotalCostofOwnership for the emergent smart campus is found in the tenure of Standards Michigan and its collaboration with IEEE Education & Healthcare Facilities Committee (E&H).  You may join us sorting through the technical, economic and legal particulars and day at 11 AM Eastern time.   The IEEE E&H Committee meets online every other Tuesday in European and American time zones; the next meeting on March 26th.  All meetings are open to the public.

University of California San Diego Microgrid

You are encouraged to communicate directly with Brian O’Connor, the NFPA Staff Liaison for specific questions.  We have some of the answers but Brian is likely to have all of them.   CLICK HERE for the NFPA Directory.  Additionally, NFPA will be hosting its Annual Conference & Expo, June 17-20 in San Antonio, Texas; usually an auspicious time for meeting NFPA staff working on this, and other projects.

The prospect of installing of energy storage technologies at every campus building — or groups of buildings, or in regions — is clearly transformational if the education facilities industry somehow manages to find a way to drive the cost of operating and maintaining many energy storage technologies lower than the cost of operating and maintaining a single campus distributed energy resource.  The education facility industry will have to train a new cadre of microgrid technology specialists who must be comfortable working at ampere and voltage ranges on both sides of the decimal point that separates power engineers from control engineers.  And, of course, dynamic utility pricing (set by state regulatory agencies) will continue to be the most significant independent control variable.

Finding a way to make all this hang together is the legitimate work of the academic research side of the university.   We find that sustainability workgroups (and elected governing bodies) in the education industry are vulnerable to out-sized claims about microgrids and distributed energy resources; both trendy terms of art for the electrotechnical transformation we call the emergent #SmartCampus.

We remind sustainability trendsniffers that the central feature of a distributed energy resource — the eyesore known as the university steam plant — bears most of the characteristics of a microgrid.   In the videoclip linked below a respected voice from Ohio State University provides enlightenment on this point; even as he contributes to the discovery stream with a study unit.

Ohio State University McCracken Power Plant

Issue: [16-131]

Category:  District Energy, Electrical, Energy, Facility Asset Management, Fire Safety, Risk Management, #SmartCampus, US Department of Energy

Colleagues: Mike Anthony, Bill Cantor (wcantor@ieee.org). Mahesh Illindala

Standards Massachusetts, Standards Texas, Standards Ohio

*It is noteworthy that (NFPA 70) National Electrical Code-Making Panel 1 has appropriated vehicle-to-grid installations into its scope.

 

Princeton University Power Plant | Click on image

LEARN MORE:

Related Post: Electrical Safety Research Advisory Committee

Bibiography: Campus Microgrids

Higher Education Facilities Conference: The Rise of University Microgrids

 

Mahesh Illindala enlightens understanding of what microgrid is, and is not:

Readings: The “30-30” Rule for Outdoor Athletic Events Lightning Hazard

Thunderstorm | Shelter (Building: 30/30 Rule)

The standards for delaying outdoor sports due to lightning are typically set by governing bodies such as sports leagues, associations, or organizations, as well as local weather authorities. These standards may vary depending on the specific sport, location, and level of play. However, some common guidelines for delaying outdoor sports due to lightning include:

  1. Lightning Detection Systems: Many sports facilities are equipped with lightning detection systems that can track lightning activity in the area. These systems use sensors to detect lightning strikes and provide real-time information on the proximity and severity of the lightning threat. When lightning is detected within a certain radius of the sports facility, it can trigger a delay or suspension of outdoor sports activities.
  2. Lightning Distance and Time Rules: A common rule of thumb used in outdoor sports is the “30-30” rule, which states that if the time between seeing lightning and hearing thunder is less than 30 seconds, outdoor activities should be suspended, and participants should seek shelter. The idea is that lightning can strike even when it is not raining, and thunder can indicate the proximity of lightning. Once the thunder is heard within 30 seconds of seeing lightning, the delay or suspension should be implemented.
  3. Local Weather Authority Guidelines: Local weather authorities, such as the National Weather Service in the United States, may issue severe weather warnings that include lightning information. Sports organizations may follow these guidelines and suspend outdoor sports activities when severe weather warnings, including lightning, are issued for the area.
  4. Sports-Specific Guidelines: Some sports may have specific guidelines for lightning delays or suspensions. For example, golf often follows a “Play Suspended” policy, where play is halted immediately when a siren or horn is sounded, and players are required to leave the course and seek shelter. Other sports may have specific rules regarding how long a delay should last, how players should be informed, and when play can resume.

It’s important to note that safety should always be the top priority when it comes to lightning and outdoor sports. Following established guidelines and seeking shelter when lightning is detected or severe weather warnings are issued can help protect participants from the dangers of lightning strikes.

National Weather Service
NCAA Guideline: Lightning Safety
Noteworthy: NFPA titles such as NFPA 780 and NFPA 70 Article 242 deal largely with wiring safety, informed by assuring a low-resistance path to earth (ground)

There are various lightning detection and monitoring devices available on the market that can help you stay safe during thunderstorms. Some of these devices can track the distance of lightning strikes and alert you when lightning is detected within a certain radius of your location. Some devices can also provide real-time updates on lightning strikes in your area, allowing you to make informed decisions about when to seek shelter.

Examples of such devices include personal lightning detectors, lightning alert systems, and weather stations that have lightning detection capabilities. It is important to note that these devices should not be solely relied upon for lightning safety and should be used in conjunction with other safety measures, such as seeking shelter indoors and avoiding open areas during thunderstorms.

Theatre: Lighting Design

Artificial lighting was first introduced to theater dramatic performance stages in the 17th century. The use of candles and oil lamps initially provided a means to illuminate the stage, allowing performances to take place in the evening and enhancing the visibility for both actors and the audience. Before this development, theatrical performances were typically held during daylight hours due to the reliance on natural light.

In the early 17th century, theaters in England began experimenting with various lighting techniques. Thomas Killigrew’s Theatre Royal, Drury Lane, in London, is often credited as one of the first theaters to use artificial lighting. The use of candles and later oil lamps evolved over time, leading to more sophisticated lighting setups as technology advanced.

The 18th and 19th centuries saw further innovations in stage lighting, including the use of gas lamps. Eventually, the introduction of electric lighting in the late 19th and early 20th centuries revolutionized stage lighting, providing theaters with a more reliable and controllable source of illumination. This allowed for greater creativity in the design and execution of lighting effects, contributing significantly to the overall theatrical experience.

Oklahoma City University

More

Stage Lighting 101 — Everything You Need to Know

Boston University: Theater, Lighting Design

Wayne State University: Lighting Design

Illumination 100

 

 

Canadian Parliament Debate on Standards Incorporated by Reference

“The Jack Pine” | Tom Thomson (1916) | National Gallery of Canada

 

Originally posted January 2014

In these clips — selected from Canadian Parliamentary debate in 2013 — we observe three points of view about Incorporation by reference (IBR); a legislative drafting technique that is the act of including a second document within a main document by referencing the second document.

This technique makes an entire second (or referenced) document a part of the main document.  The consensus documents in which we advocate #TotalCostofOwnership concepts are incorporated by reference into legislation dealing with safety and sustainability at all levels of government.  This practice — which many consider a public-private partnership — is a more effective way of driving best practices for technology, and the management of technology, into regulated industries.

Parent legislation — such as the Higher Education Act of 1965, the Clean Air Act and the Energy Policy Act – almost always require intermediary bureaucracies to administer the specifics required to accomplish the broad goals of the legislation.  With the gathering pace of governments everywhere expanding their influence over larger parts of the technologies at the foundation of national economies; business and technology standards are needed to secure that influence.  These standards require competency in the application of political, technical and financial concepts; competencies that can only be afforded by incumbent interests who build the cost of their advocacy into the price of the product or service they sell to our industry.  Arguably, the expansion of government is a reflection of the success of incumbents in business and technical standards; particularly in the compliance and conformity industries.

About two years ago, the US debate on incorporation by reference has been taken to a new level with the recent statement released by the American Bar Association (ABA):

16-164-Incorporation-by-Reference-ABA-Resolution-and-Report

The American National Standards Institute responded to the ABA with a statement of its own.

16-164-ANSI-Response-to-ABA-IBR-06-16 (1)

The incorporation by reference policy dilemma has profound implications for how we safely and economically design, operate and maintain our “cities-within-cities” in a sustainable manner but, admittedly, the results are only visible in hindsight over a time horizon that often exceed the tenure of a typical college or university president.

A recent development — supporting the claims of ANSI and its accredited standards developers — is noteworthy:

The National Institute for Standards and Technology (NIST) manages a website — Standards.GOV — that is a single access point for consensus standards incorporated by reference into the Code of Federal Regulations: Standards Incorporated by Reference Database.   Note that this database does not include specific reference to safety and sustainability codes which are developed by standards setting organizations (such as NFPA, ICC, IEEE, ASHRAE and others) and usually incorporated by reference into individual state public safety and technology legislation.

LEARN MORE:

 

Gallery: Supercomputers & Data Centers

Pytorch | TensorFlow | JAX

454c656374726f746563686e6f6c6f6779

print(“Python”)

 

August 14, 2003

“The world is changed by examples, not by opinions.”

– Marc Andreesen (Founder of Netscape, the first dominant web browser)

 

August 14, 2003 Power Outage at the University of Michigan

Electric Service Metering & Billing

Electrical Safety

Today at 16:00 UTC we review best practice for engineering and installing the point of common coupling between an electrical service provider its and an purchasing — under the purview of NEC CMP-10.

Committee topical purviews change cycle-to-cycle.  Here’s the transcript for today’s session:  CMP-10 Second Draft Report (368 pages)

Use the login credentials at the upper right of our home page.

The relevant passages of the National Electrical Code are found in Article 230 and Article 495.  We calibrate our attention with the documents linked below.  These are only representative guidelines:

University of Michigan Medium Voltage Electrical Distribution

Texas A&M University Medium Voltage Power Systems

University of Florida Medium Voltage Electrical Distribution

Representative standards for regulated utilities for purchased power:

Detroit Edison Primary Service Standards (Green Book)

American Electric Power: Requirements for Electrical Services

Pacific Gas & Electric Primary Service Requirements

The IEEE Education & Healthcare Facilities Committee curates a library of documents similar to those linked above.

Design of Electrical Services for Buildings

We are in the process of preparing new (original, and sometimes recycled) proposals for the 2026 National Electrical Code, with the work of Code Panel 10 of particular relevance to today’s topic:

2026 National Electrical Code Workspace

First Draft Meetings: January 15-26, 2024 in Charleston, South Carolina

Electrical meter billing standards are generally regulated at the state or local level, with guidelines provided by public utility commissions or similar regulatory bodies.  These tariff sheets are among the oldest in the world.  There are some common standards for billing and metering practices, including:

  1. Meter Types: There are various types of meters used to measure electricity consumption, including analog (mechanical) meters, digital meters, and smart meters. Smart meters are becoming more common and allow for more accurate and real-time billing.
  2. Billing Methodology:
    • Residential Rates: Most residential customers are billed based on kilowatt-hours (kWh) of electricity used, which is the standard unit of energy.
    • Demand Charges: Some commercial and industrial customers are also subject to demand charges, which are based on the peak demand (the highest amount of power drawn at any one point during the billing period).
    • Time-of-Use Rates: Some utilities offer time-of-use (TOU) pricing, where electricity costs vary depending on the time of day or season. For example, electricity may be cheaper during off-peak hours and more expensive during peak hours.
  3. Meter Reading and Billing Cycle:
    • Monthly Billing: Typically, customers receive a bill once a month, based on the reading of the electricity meter.
    • Estimation: If a meter reading is not available, some utilities may estimate usage based on historical patterns or average usage.
    • Smart Meter Readings: With smart meters, some utilities can provide daily or even hourly usage data, leading to more precise billing.
  4. Meter Standards: The standards for electrical meters, including their accuracy and certification, are set by national organizations like the National Institute of Standards and Technology (NIST) and the American National Standards Institute (ANSI). Meters must meet these standards to ensure they are accurate and reliable.
  5. Utility Commission Regulations: Each state has a utility commission (such as the California Public Utilities Commission, the Texas Public Utility Commission, etc.) that regulates the rates and billing practices of electricity providers. These commissions ensure that rates are fair and that utilities follow proper procedures for meter readings, billing cycles, and customer service
  6. Large University “Utilities”.   Large colleges and universities that generate and distribute some or all of their electric power consumption have developed practices to distribute the cost of electricity supply to buildings.  We will cover comparative utility billing practices in a dedicated colloquium sometime in 2025.

Michigan Public Service Commission | Consumer’s Energy Customer Billing Rules

“Tea, Earl Grey, Hot”

The command issued by the character Captain Jean-Luc Picard in the television series “Star Trek: The Next Generation” finds its way into the archive of photographs of Nobel Laureates consorting with politicians at the University of Michigan and elsewhere.

Attendees of the Theoretical Physics Colloquium at the University of Michigan in 1929.

American Institute of Physics Archive

Ex Libris Universum

…”There’s not good math explaining forget the physics of it.  Math explaining the behavior of complex systems yeah and that to me is both exciting and paralyzing like we’re at very early days of understanding you know how complicated and fascinating things emerge from simple rules…” — Peter Woit [1:16:00]

Coffee & Tea Standards

Since 1936 the Brown Jug has been the ancestral trough of generations of University of Michigan students and faculty — notably. Donald Glaser (inventor of the bubble chamber) and Samuel C. C. Ting (Nobel Laureate) whose offices at Randall Laboratory were a 2-minute walk around the corner from The Brown Jug.  As the lore goes, the inspiration happened whilst watching beer bubbles one ordinary TGIF Friday.

The Brown Jug is named after the Michigan vs Minnesota football trophy, which is the oldest in college football.

Critical Operations Power Systems

Disaster 500


The original University of Michigan codes and standards enterprise advocated actively in Article 708 Critical Operations Power Systems (COPS) of the National Electrical Code (NEC) because of the elevated likelihood that the education facility industry managed assets that were likely candidates for designation critical operations areas by emergency management authorities.

Because the NEC is incorporated by reference into most state and local electrical safety laws, it saw the possibility that some colleges and universities — particularly large research universities with independent power plants, telecommunications systems and large hospitals  — would be on the receiving end of an unfunded mandate.   Many education facilities are identified by the Federal Emergency Management Association as community storm shelters, for example.

As managers of publicly owned assets, University of Michigan Plant Operations had no objection to rising to the challenge of using publicly owned education facilities for emergency preparedness and disaster recovery operations; only that meeting the power system reliability requirements to the emergency management command centers would likely cost more than anyone imagined — especially at the University Hospital and the Public Safety Department facilities.  Budgets would have to be prepared to make critical operations power systems (COPS) resistant to fire and flood damages; for example.

Collaboration with the Institute of Electrical and Electronic Engineers Industrial Applications Society began shortly after the release of the 2007 NEC.  Engineering studies were undertaken, papers were published (see links below) and the inspiration for the IEEE Education & Healthcare Facilities Committee developed to provide a gathering place for power, telecommunication and energy professionals to discover and promulgate leading practice.   That committee is now formally a part of IEEE and collaborates with IAS/PES JTCC assigned the task of harmonizing NFPA and IEEE electrical safety and sustainability consensus documents (codes, standards, guidelines and recommended practices.

Transcripts of 2026 Revision:

Public Input Report CMP-13

Public Comment Report CMP-13

The transcript of NEC Code Making Panel 13 — the committee that revises COPS Article 708 every three years — is linked below:

NEC CMP-13 First Draft Balloting

NEC CMP-13 Second Draft Balloting

The 2023 Edition of the National Electrical Code does not contain revisions that affect #TotalCostofOwnership — only refinement of wiring installation practices when COPS are built integral to an existing building that will likely raise cost.  There are several dissenting comments to this effect and they all dissent because of cost.   Familiar battles over overcurrent coordination persist.

Our papers and proposals regarding Article 708 track a concern for power system reliability — and the lack of power  — as an inherent safety hazard.   These proposals are routinely rejected by incumbent stakeholders on NEC technical panels who do not agree that lack of power is a safety hazard.  Even if lack of power is not a safety hazard, reliability requirements do not belong in an electrical wiring installation code developed largely by electricians and fire safety inspectors.  The IEEE Education & Healthcare Facilities Committee (IEEE E&H) maintains a database on campus power outages; similar to the database used by the IEEE 1366 committees that develop reliability indices to enlighten public utility reliability regulations.

Public input on the 2026 revision to the NEC will be received until September 7th.  We have reserved a workspace for our priorities in the link below:

2026 National Electrical Code Workspace

Colleagues: Robert Arno, Neal Dowling, Jim Harvey

 

LEARN MORE:

IEEE | Critical Operations Power Systems: Improving Risk Assessment in Emergency Facilities with Reliability Engineering

Consuting-Specifying Engineer | Risk Assessments for Critical Operations Power Systems

Electrical Construction & Maintenance | Critical Operations Power Systems

International City County Management Association | Critical Operations Power Systems: Success of the Imagination

Facilities Manager | Critical Operations Power Systems: The Generator in Your Backyard

Electric Vehicle Power Transfer System

Updated July 15, 2025

 

2026 National Electrical Code Table of Contents

2026 NEC First Draft: How Did We Get Here?

2026 National Electrical Code

Public Input Transcript: First Draft | Public Comment Transcript: Second Draft

 

2023 National Electrical Code | Current Issues and Recent Research

 

2026 National Electrical Code Workspace

August 5, 2021

The 2020 National Electrical Code (NEC) contains significant revisions to Article 625 Electric Vehicle Power Transfer Systems.  Free access to this information is linked below:

2023 National Electrical Code

2020 National Electrical Code

You will need to set up a (free) account to view Article 625 or you may join our colloquium today.

Public input for the 2023 Edition of the NEC has already been received.  The work of the assigned committee — Code Making Panel 12 — is linked below:

NFPA 70_A2022_NEC_P12_FD_PIReport_rev

Mighty spirited debate.   Wireless charging from in-ground facilities employing magnetic resonance are noteworthy.  Other Relevant Articles:

  • Article 240: Overcurrent Protection: This article includes requirements for overcurrent protection devices that could be relevant for EV charging systems.
  • Article 210: Branch Circuits: General requirements for branch circuits, which can include circuits dedicated to EVSE.
  • Article 220: Load Calculations: Guidelines for calculating the electrical load for EVSE installations.
  • Article 230: Services: General requirements for electrical service installations, which can be relevant for EVSE.
  • Article 250: Grounding and Bonding: Requirements for grounding and bonding, which are critical for safety in EVSE installations.

 

Technical committees meet November – January to respond.   In the intervening time it is helpful  break down the ideas that were in play last cycle.  The links below provide the access point:

Public Input Report Panel 12

Public Comment Report Panel 12

Panel 12 Final Ballot

We find a fair amount of administrative and harmonization action; fairly common in any revision cycle.   We have taken an interest in a few specific concepts that track in academic research construction industry literature:

  • Correlation with Underwriters Laboratory product standards
  • Bi-Directional Charging & Demand Response
  • Connection to interactive power sources

As a wiring safety installation code — with a large installer and inspection constituency — the NEC is usually the starting point for designing the power chain to electric vehicles.   There is close coupling between the NEC and product conformance organizations identified by NIST as Nationally Recognized Testing Laboratories; the subject of a separate post.

Edison electric vehicle | National Park Service, US Department of the Interior

After the First Draft is released June 28th public comment is receivable until August 19th.

We typically do not duplicate the work of the 10’s of thousands of National Electrical Code instructors who will be fanning out across the nation to host training sessions for electrical professionals whose license requires mandatory continuing education.  That space has been a crowded space for decades.   Instead we co-host “transcript reading” sessions with the IEEE Education & Healthcare Facilities Committee to sort through specifics of the 2020 NEC and to develop some of the ideas that ran through 2020 proposals but did not make it to final ballot and which we are likely to see on the docket of the 2023 NEC revision.   That committee meets online 4 times monthly.  We also include Article 625 on the standing agenda of our Mobility colloquium; open to everyone.   See our CALENDAR for the next online meeting

Issue: [16-102]

Category: Electrical, Transportation & Parking, Energy

Colleagues: Mike Anthony, Jim Harvey

Workspace / NFPA

More

U.S. NATIONAL ELECTRIC VEHICLE SAFETY STANDARDS SUMMIT | DETROIT, MICHIGAN 2010

Gallery: Electric Vehicle Fire Risk

 

 

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