Online training takes aims at energy, water use in food service

According to the Food Service Technology Center You are leaving WAPA.gov. (FSTC), an energy-efficiency and appliance testing facility funded by Pacific Gas and Electric, the industry has a $40 billion utility bill and is five to 10 times more energy intensive than other commercial customers. Since food service employs one in 10 U.S. workers, the chances are good that you have at least one restaurant in your service territory. That gives you the opportunity to help an important customer segment succeed, support your local economy and conserve critical resources.

Teaching food service employees to manage energy and water costs the same way they manage their food cost has the potential to reduce billions of dollars of waste annually. But behavior change takes education, and delivering training to a diverse, busy and mobile workforce is a big challenge, to put it mildly. FSTC has tackled this challenge by introducing online sustainability training to turn food service professionals into energy-efficiency experts: FE3 You are leaving WAPA.gov. certification.

Industry-wide application
Based on 28 years of lab and field work, energy surveys and design consultations by industry experts, FE3 has built a practical curriculum focused on results. Like most industries, food service encompasses not only those involved in day-to-day operations, but also a wide network of supporting trades and employees. FE3 training can help all of these professionals understand their role in improving sustainability.

Restaurant owners, managers and staff will learn how to operate and maintain an efficient kitchen and how to choose more efficient equipment. Utilities and suppliers will learn about the industry’s energy challenges so they can develop programs and services to help restaurants become more profitable. Facility designers, equipment manufacturers and service agents can gain skills that will make them resources for restaurants seeking to increase sustainability.

Culinary and hospitality schools can add the sustainability curriculum to their programs. FE3 derived the online course material from classes taught live to university, college, community college and culinary students for over a decade.

Convenient, comprehensive learning
Recognizing that hectic schedules can be a big barrier to training in the food service industry, FE3 makes the six modules available online 24/7.

Each module covers a different area of food service energy and water use with interactive exercises. Topics include:

  • Intro to energy efficiency – How energy use relates to sustainability and why energy efficiency is a necessary component of a commercial food service sustainability program
  • Efficient and effective lighting – The basics of electric lighting and how to choose lighting products that use less energy, look good and meet the special needs of commercial food service
  • Efficient refrigeration – The basic principles of refrigeration and how to select and maintain energy-efficient refrigeration systems
  • Water conservation – The basic principles of water use and conservation in a food service operation and how to select and compare energy- and water-efficient dish machines
  • Energy-efficient cooking equipment – The basics of food-prep and cook-line energy use and how to reduce cooking appliance operating costs
  • Commercial kitchen ventilation – The basics and best practices to optimize kitchen ventilation systems

The material is narrated, loaded with easy-to-understand graphics and employs gamification and avatars to make learning more fun. Modules conclude with a short exam that reinforces learning.

After successfully completing the FE3 training, students will understand basic energy terms and have practical skills that will positively impact their restaurant’s bottom line. They will be prepared to choose the right lighting for specific tasks, calculate the cost of water leaks, properly maintain refrigeration, select energy-efficient cooking appliances with online tools and troubleshoot and optimize commercial kitchen ventilation systems.

Help for key accounts
Although FE3 training was developed by the California-based FSTC, the curriculum is relevant to food service employees across the country, as are many other resources the center offers.

Utility key account supervisors should explore FSTC, bookmark it and share it with their food service customers. Let restaurant owners and operators in your territory know about the recommendations for energy-efficient kitchen equipment, design guides for water and ventilation systems, equipment test results and a variety of calculators. Tell them about the presentations from FSTC seminars and webinars archived online. Share the industry links and publications with your local coffee shop or five-star dining establishment. In an industry with notoriously thin margins and high turnover, utilities can make a difference.

Webinar: Improve chances for success of your community solar project

Oct. 5
11 a.m.-12 p.m. MT

The Community Solar Value Project You are leaving WAPA.gov. is back with a free live webinar on Oct. 5.

What Makes the Biggest Difference in Achieving Community Solar Success? You are leaving WAPA.gov. will feature utility industry journalist Herman K. Trabish discussing case studies he covered for Utility DiveYou are leaving WAPA.gov. CSVP leaders will join Trabish to share case studies that illustrate their best-practice picks.

The discussion will be divided into coverage of the following questions and more:

  • Where’s the balance point between utility freedom and regulatory push?
  • Which lessons-learned are most often ignored—and at what price?
  • Which utilities have found the best pricing solutions, and how?
  • How do you speed up the program-design process?
  • Do pilot programs help or hinder?

Besides looking inside the machinery of successful community solar programs, speakers will explore the question of what kinds of policies most help—or hurt—community solar program innovation.

The webinar will also include an advanced look at CSVP’s new Solutions Toolkit, which offers practical approaches in the six top challenge areas CSVP has identified through its work with utility partners. In addition to some familiar analytic methods and guides that CSVP has field tested this year, the toolkit features brand new resources to help utility program designers make community solar better.

This webinar is free, but registration is required. Don’t miss this opportunity to learn the keys to making the most of your community solar project.

Source: Community Solar Value Project, 9/11/17

LES looks to cloud for better program implementation, evaluation

Maintaining a successful utility efficiency program involves a never-ending quest to improve the customer experience and evaluate the effectiveness of each measure. Moving its Sustainable Energy Program You are leaving WAPA.gov. to the cloud has given Lincoln Electric System (LES) of Nebraska a win on both fronts. 

Launched in 2009, the Sustainable Energy Program was intended to show that energy efficiency and demand-side management were viable alternatives to building new generation and buying expensive energy to meet peak demand. “It had a healthy participation rate relative to our expectations from the beginning,” said LES Energy Services Manager Marc Shkolnick. “But you still have to keep refining and evaluating.”

Always room to improve
In its current iteration, the program provides incentives to residential and commercial customers for whole-building sealing and insulation and high-efficiency heat pumps and air conditioners. Lighting and prescriptive energy-efficiency measures are available to commercial and industrial customers, as well.

The Sustainable Energy Program offers incentives for whole-building insulation and sealing to both residential and commercial customers.

The Sustainable Energy Program offers incentives for whole-building insulation and sealing to both residential and commercial customers. (Photo by DOE Weatherization Assistance Program)

For end users, participation in the program is simple and straightforward by design. Customers select a participating contractor to install the measure, LES pays the incentive to the contractor when the work is completed and the contractor passes it on to the customer as a credit on their invoice. Beyond searching the online trade ally list, the customer does very little paperwork, and that did not change with the move to the cloud. “The big difference for end users is that the system makes it easier to keep our trade ally list up to date,” Shkolnick noted.

For contractors and utility staff, however, the cloud system has significantly streamlined the process, Shkolnick said. “There was something of a learning curve the first year, with transitioning to a paperless system,” he recalled. “Once the contractors got their information entered, it became much more efficient for them.”

Given that more than 90 percent of the customers who use the Sustainable Energy Program come in through contractor recommendation, LES has a big stake in improving their trade allies’ experience. Make life easier for the people who are driving customer engagement in your efficiency program and your program will become stronger, too.

Learning from data
Evaluation, measurement and verification is one of the greatest challenges of customer program management, and one of the biggest attractions of automating program administration. In the two years since LES converted the Sustainable Energy Program to cloud management, the system has confirmed hunches and revealed trends.

LES customers who took advantage of the air conditioner incentive also had a high response rate to the post-project survey.

LES customers who took advantage of the air conditioner incentive also had a high response rate to the post-project survey. (Photo by Energy Star)

The post-project survey the customers can complete online has proven highly useful to Shkolnick. Air conditioning customers respond at a high 20-percent rate. One question in particular—“How much impact did the incentive play in your choosing the higher-efficiency unit?”—has allowed LES to adjust the deemed energy savings attributed to the program. “You know there are ‘free riders’ who were going to spring for a high-efficiency unit, incentive or not, but we now have a better idea of how many participants that is,” he said.

Another lesson from data is that incentives play different roles in motivating residential customers as opposed to commercial customers. This is a fact that experienced program managers already grasp intuitively, but, “The difference is just stark,” Shkolnick declared. “Businesses clearly look at efficiency as an investment, while a lot of homeowners give as much weight to comfort, convenience and other intangibles.”

A significant number of customers have given their names and addresses on their surveys, allowing LES to contact them for testimonials to include in future outreach. But negative responses are just as valuable. “Customer experience is the part of the program where we have the most control,” explained Shkolnick. “If someone rates their experience as poor, we can contact them, find out what went wrong and use that knowledge to improve our customer service.”

Future is cloud-y
In choosing the cloud system, Shkolnick observed that flexibility was a top priority. “We are in an ever-changing industry, so we needed a system that would be easy to modify from year to year,” he said.

The LES Technology Services department was very helpful in developing the requests for proposal (RFPs) and evaluating bids to ensure that the system was easy to use for trade allies, had robust reporting abilities and had a reasonable price tag. “One thing we learned in the RFP process is that the market space is not overly populated with services targeting utility programs,” Shkolnick acknowledged.

Perhaps software developers will take note and address that gap in the near future. A great deal of industry attention has been focused on systems and devices that track consumer energy use and assist with load management. But LES knows that building more responsive, effective customer programs is just as important, and the cloud has helped the utility do just that.

Source: Public Power Daily

Upcoming deadlines

Plan your celebration for Energy Efficiency Day 2017

Oct. 5 is fast approaching, and the message for Energy Efficiency Day 2017—save energy, save money—is one your customers will surely appreciate.

Following the success of last year’s first-ever national event, the American Council for an Energy Efficient Economy You are leaving WAPA.gov. is looking to expand participation and awareness of the event. More than 175 were official supporters in 2016. Your utility could join the more than 175 government agencies, companies, power providers, cities and other organizations that supported Energy Efficiency Day in 2016.

Outreach includes a website, a Facebook account, You are leaving WAPA.gov. more official declarations and a challenge to save energy in homes and businesses. An ACEEE blog post  lists four suggestions for challenging your community to save energy.

  • Sign up on the new event website You are leaving WAPA.gov. as an individual or as an organization. You will receive ideas and fun facts to share on social media as Energy Efficiency Day gets closer.
  • Urge your residential and commercial customers to take the Lightbulb Challenge or the Office Lighting Challenge.  Challengers agree to replace at least one light bulb with an LED. If each US household purchases just one LED bulb, consumers could save $500 million annually.
  • Share your own energy efficiency story. Promote your news about Energy Efficiency Day and the benefits of saving energy–and money–through blog posts, emails, newsletters and social media. Create your own content with videos, photos, graphics or other messages. Sign up on the EE Day website to get more material you can use from ACEEE.

You can use your imagination, too–creativity and humor are welcomed. And don’t forget to share your ideas with ACEEE and WAPA. We would love to highlight your activities in an Energy Services Bulletin story.

Source: American Council for an Energy Efficient Economy, 9/5/17

Long road leads to solar success for Southern Ute tribe

Tenacity paid off for the Southern Ute Indian Tribe on July 24, when they dedicated their newly commissioned and fully operational Oxford Solar Project on the Southern Ute Indian Reservation in Ignacio, Colorado.

The Southern Ute Tribe built their solar array on the mostly unusable Oxford Tract near a substation and just three miles from the tribal building campus.

The Southern Ute Tribe built their solar array on the mostly unusable Oxford Tract near a substation and just three miles from the tribal building campus. (Photo by the Southern Ute Indian Tribe)

The years it took to develop the 1.3-megawatt (MW), ground-mounted solar photovoltaic (PV) system ultimately ensured that the project was a winner for all involved. The array will reduce operating costs for the tribe by offsetting about 15 percent of the energy used by 10 tribal buildings. The siting of the project repurposes more than 10 acres of tribal land that was mostly unusable due to naturally occurring selenium contamination. The Oxford Tract, as the land parcel is called, has strong solar resources, is located near two substations and does not have any endangered or threatened species on it. La Plata Electric AssociationYou are leaving WAPA.gov. which is purchasing the power and providing the grid connection, counts the electricity toward its goal of 20 percent local generation by 2020.

Slow start gathers steam
The Southern Ute Tribe first began to explore the idea of building a PV system in 2006 as a way of diversifying its business interests, and launched the Southern Ute Alternative Energy LLC (SUAE) in 2008. As a for-profit business, the SUAE evaluated solar PV development opportunities on tribal lands from a business perspective. For several years, alternative energy projects remained stubbornly out of reach, too costly for SUAE to pursue.

The turning point came in 2011 when the tribe performed a new feasibility study to look at potential sites and business models. James Jensen, who had recently joined the SUAE staff, recalled that the study was very thorough. “We were open to projects either on or off of tribal land,” he said. “If it was on tribal land, what was the best location? We evaluated environmental factors like whether the land was arable or disturbed or in a floodplain.”

The study also considered the proximity of transmission and substations to potential sites and did economic modeling on hypothetical projects. “We came out of the process with a comprehensive understanding of what would make a successful solar project,” said Jensen.

The findings determined that the Oxford Tract was the most suitable location for a utility-scale solar development, and that a grant was needed to make the project economical.

JumpSTARTing project
Southern Ute Grant Specialist Jody Rosier began working with Jensen on the grant application to submit to the Department of Energy (DOE). Financial help wasn’t the only thing DOE had to offer the tribe, however.

Just as important, Rosier recalled, was the tribe’s participation in the Strategic Technical Assistance Response Team (START) Program. START, a program of the DOE Office of Indian Energy, provides technical assistance to help Native American tribes complete renewable energy and energy efficiency projects. “START analyzed and validated the findings of the feasibility study,” Rosier recalled, “and helped the tribe to establish a relationship with DOE.”

The program also helped the tribe determine the siting of the project near substations belonging to LPEA. “Initially, the project was planned as a ‘virtual metering’ situation, where any kilowatt-hours being generated would offset kilowatt-hours the tribe was using,” explained LPEA Engineering Manager Ron Meier. “Siting the array near a substation was key to making physics work. It really simplified the development process for them.”

Beyond that, Meier added, the purchase power agreement was pretty straightforward. With a budget of $3 million co-funded by the tribe and a $1.5 million grant from the DOE, it was time to start building.

Ready, set, install!
SUAE issued a request for proposals at the end of 2014 for an 800-kW system. It was around that time that the solar industry saw a significant drop in the price of panels. “We were pleasantly surprised when the bids came back to find that we could afford to build a somewhat larger project,” said Jensen.

The tribe chose Boulder, Colorado-based Namaste Solar to design the project for the tribe and install the tracking panels. Jody Rosier noted that tracking technology is becoming more common in new solar installations. “Panels that follow the sun across the sky generate more electricity and that improves a project’s economics,” she said.

The long process that culminated in the July 24 celebration provided the Southern Ute tribe with a thorough education in solar development. Jensen observed that the most important lesson they learned might be to keep the first project simple. He pointed to the selection of a site that did not require an environmental impact study as one factor that kept the project from getting too financially and legally complicated.

Although grants that require matching funds may put projects beyond a tribe’s reach, Rosier encourages tribes that are interested in developing renewable energy systems to investigate available grants. “Grants that require matching funds may not work for tribes,” she warned. “But once the renewable system is up and running, it provides years of sustainable electricity and needs little maintenance.” 

Source: Office of Indian Energy Policy and Programs, 7/25/17

ACEEE blog series explores energy-efficiency investments in US

Stacks of American dollar billsEnergy efficiency is a big and growing business with $231 billion invested globally in 2016, according to an estimate by the International Energy Agency You are leaving WAPA.gov. (IEA). The American Council for an Energy-Efficient Economy (ACEEE) used the release of the IEA Worldwide Investment report in July as a springboard to examine how much the United States invests in energy efficiency, what is driving that investment and how it could be increased.

We spend how much?
The first blog post, How Many Billions do US Businesses and Individuals Invest in Energy Efficiency Each Year?You are leaving WAPA.gov. gave $41 billion as the estimated figure for efficiency spending in our country. This was the first year that the IEA report gave a separate estimate for the U.S., but spending was not broken out by sector. Based on the worldwide estimate, about 58 percent of that spending is for buildings, 26 percent for transportation and 16 percent for industry.

Drawing on other spending reports to get a clearer picture, ACEEE concludes that our energy-efficiency investments may actually range from $60 billion to $115 billion annually. This wide-ranging estimate results from different studies employing different measurement methods and parameters. However, additional research by ACEEE and by the U.S. Green Building Council You are leaving WAPA.gov. suggest this range is reasonable.

Policy appears to be the primary driver in energy-efficiency investments, with building codes and appliance and vehicle standards responsible for about $20 billion worth. “Spillover” occurs when policies and programs, such as utility incentives and customer programs, indirectly influence consumer decisions.

Reasons why
Other factors driving the decision to invest in energy efficiency include income and education levels among residential consumers and type of industry for business customers.

Who Invests in Energy Efficiency and Why?, the second blog post, cites a survey by the U.S. Energy Information Administration (EIA) showing that large firms are more likely to engage in energy management activities than small companies. Businesses participating in the Shelton Group’s 2016 B2B Pulse study You are leaving WAPA.gov. rated how important sustainability and conservation were to their company’s operating and capital expenditure decisions. Commercial real estate development and property management were the industry groups that gave energy issues the most consideration.

The EIA’s 2015 Residential Energy Consumption Survey found that consumers with higher incomes are more likely to make energy-efficiency investments large enough to be eligible for federal energy-efficiency tax credits. Smaller investments, such as new lightbulbs, do not appear to be affected by consumer income. Another study found an education effect along with the income effect, but income and education are usually closely related. Households that have moved within the last three years spend more on efficiency improvements, as do younger families.

The reasons commercial customers offer for making efficiency upgrades, while not unexpected, show a subtle shift in priorities. From the Shelton Group study, business customers cited “energy savings or other cost reductions” as the leading motivation for investing in efficiency. Although concern about climate change ranked toward the bottom of the list, the percentage of respondents that mentioned it has nearly doubled in the last year.

Saving on electric bills also topped the reasons residential customers gave for undertaking energy-efficiency improvements at 61 percent. Making the home more comfortable followed with 35 percent and making the home healthier was mentioned by 27 percent of respondents. Taken together, comfort and safety are an equal consideration to financial concerns. The study recommends focusing homeowners on both the financial and non-financial benefits of energy efficiency to explain the value of their investment.

Let’s do more
The final post addresses the question on every utility program manager’s mind—How Can we Increase Energy Efficiency Investments?—and offers 10 suggestions to make it happen. According to ACEEE, only about one-quarter of households and businesses implement efficiency upgrades, in spite of the benefits.

The suggestions focus on expanding what is already working, while remaining open to new approaches. More measurement and benchmarking could help program providers identify successful programs and help customers see the value of energy-efficiency improvements. The article also recommends seeking partnerships with real estate, financial and construction industries to reach consumers through different channels.

Energy-efficiency investments were 8-9 percent higher in 2016 than in 2015. The ACEEE blog series offers some starting points to help utilities keep the momentum going. Energy Services looks forward to hearing about your ideas for getting more results from your existing programs and for creative new service offerings.

Source: American Council for an Energy-Efficient Economy

Conference highlights initiatives worth imitating

Rocky Mountain Utility Efficiency Exchange
Aspen Meadows Resort
Sept. 27-29

Rolling into its second decade, the Rocky Mountain Utility Efficiency Exchange You are leaving WAPA.gov. has now been around long enough for its many participants to see the fruits of meeting annually to swap program ideas and stories of successes and failures with colleagues from across the region.

Utility program managers will be gathering at the Gold LEED-certified Doerr-Hosier Center at Aspen Meadows Resort Sept. 26-29 to share their ideas for taking customer efficiency programs to the next level.

Utility program managers will be gathering at the Gold LEED-certified Doerr-Hosier Center at Aspen Meadows Resort Sept. 27-29 to share their ideas for taking customer efficiency programs to the next level. (Photo by Randy L. Martin)

Forward-looking agenda
This year’s theme, “Initiatives worth Imitating,” focuses on using lessons learned from past programs to address the new issues and opportunities utilities are facing. Programs incorporating time-of-use rates, community solar, the internet of things and big data will be in the spotlight. Sessions will also cover new spins on demand response, customer outreach, behavior change and incentive programs.

“Technology often integrates tools and strategies that were part of successful energy-efficiency and load management programs in the past,” explained Energy Services Manager Ron Horstman. “Load management today and going forward requires updates and changes in approach that will maximize the new resources and technology that are constantly being introduced to the industry. This year’s agenda encourages that kind of thinking.”

The future is on the minds of keynote speakers, too. Mark Martinez, the senior portfolio manager for emerging markets and technologies with Southern California Edison You are leaving WAPA.gov. will deliver the opening keynote, Preparing Today for an Integrated Demand Side Management Future. He will draw on his more than 25 years of experience in the design, management and evaluation of electric demand side management (DSM) programs to present a vision of how DSM needs to change.  

The closing keynote by Ellen Steiner, the vice president of Opinion Dynamics You are leaving WAPA.gov., will explore how utility customer programs can adapt to meet the needs of changing demographics. A master methodologist, Steiner has strong energy-efficiency industry experience encompassing workforce education and training, marketing, community outreach and HVAC program design and evaluation.

Hear from your peers
New and familiar faces host the regular sessions, including the dual track residential and commercial sessions on Thursday. Sponsors the City of Aspen You are leaving WAPA.gov. and Holy Cross Energy You are leaving WAPA.gov. will join Fort Collins Utilities You are leaving WAPA.gov., Colorado Springs Utilities You are leaving WAPA.gov., Nebraska Municipal Power Pool You are leaving WAPA.gov. and many more regional utilities to talk about the state of customer programs in 2017. Research agencies and nonprofits like Rocky Mountain Institute You are leaving WAPA.gov. and National Renewable Energy Laboratory team up with program vendors such as CLEAResult You are leaving WAPA.gov., Franklin Energy You are leaving WAPA.gov. and Nexant You are leaving WAPA.gov. to discuss the latest services and solutions available to help utilities manage their loads.

Friday offers a special treat with a focus on electric vehicles and storage. These topics were overwhelmingly popular at the 2017 Utility Energy Forum in California, and Rocky Mountain area utilities will be facing the same issues sooner than we expect.

Network toward your goals 
If the sessions are a great way to explore the nuts and bolts of program design and delivery, the networking opportunities let you take the pulse of the regional industry.

In addition to breaks and meals (pack your “comfortable” business casual wear), attendees will have plenty of time to mingle with their colleagues and swap ideas. On Wednesday, Sept. 27, grab a snack and a beverage and check out the poster session reception. These mini-presentations allow attendees to talk one-on-one with presenters about topics as diverse as community solar, connected home devices and infrastructure planning.

Relaxed networking continues Thursday night at the Limelight Hotel in downtown Aspen. This venue provides a low-key atmosphere where it is easy to carry on a conversation. If you hatch dinner plans at the end of the evening, the city’s world-class dining options are close by, or, you can catch an airport shuttle from the hotel lobby if need to depart early.

Enjoy Aspen
Of course, it would be a shame to cut your conference experience short, between the intriguing Friday sessions and the pleasures of September in the Rockies. We can’t promise good weather, but, most years, the days have sparkled with sunshine and fall colors and the nights have been crisp and clear.

Aspen Meadows Resort is now sold out, but you can still stroll the grounds. The city is close enough that you could park your car at your hotel and walk off the delicious meals—included in your registration fee—on your way to and from the conference.

If you need one more reason to attend the Rocky Mountain Utility Efficiency Exchange, the Building Performance Institute You are leaving WAPA.gov. awards continuing education units (CEUs) for many of the sessions. Download the instructions to find out how to verify your attendance.

UNL embraces proven storage technology to control costs

Architect rendering of the new $11.9 million thermal energy storage tank being built near landscape services buildings north of 17th and Y streets.

Architect rendering of the new $11.9 million thermal energy storage tank being built near landscape services buildings north of 17th and Y streets. (Artwork courtesy of University of Nebraska-Lincoln)

As in life, so it is in energy storage: maturity is often not considered very sexy. With all the attention lately being showered on lithium-ion battery energy storage systems, we might forget to consider an effective storage technology that has been around awhile. However, the facilities systems team at the University of Nebraska–Lincoln You are leaving WAPA.gov. (UNL) is showing its appreciation for maturity by planning a new chilled-water thermal energy storage (TES) cooling system at its City Campus.

Shaving the peak
Like many satisfied TES cooling system owners, including the California State University system You are leaving WAPA.gov. with 19 TES installations on 14 campuses, UNL is a repeat customer. The university’s first experience with the technology was a 2.4 million-gallon system installed at its East Campus location in 2009.

As the largest load served by Lincoln Electric SystemYou are leaving WAPA.gov. UNL was looking for a way to lower its high demand charges. TES uses off-peak electricity to chill water for cooling a building or a group of buildings during the hottest time of day when electricity is most expensive. “Electricity rates are not usually the driver for installing TES, especially in a state like Nebraska where electricity is very inexpensive,” explained Lalit Agarwal, interim director of utility and energy management for UNL’s facilities systems.

The City Campus TES will save UNL between $800,000 and $900,000 annually in demand savings by shifting chilled water production from peak to off-peak hours. Agarwal suspects that there are additional savings because chillers run more efficiently at night when it is cooler. “But we are not hanging our hat on those figures,” he added.

Right technology for right place
Before finalizing the decision to build a second TES cooling system on the City Campus, the facilities team weighed other options. Cool Solutions, a thermal energy storage consulting company, performed a scoping study for UNL.

The new thermal energy storage tank is located on the north side of City Campus, immediately south of the Devaney Sports Center (left) and Nebraska Innovation Campus (right).

The new thermal energy storage tank is located on the north side of City Campus, immediately south of the Devaney Sports Center (left) and Nebraska Innovation Campus (right). Photo by Craig Chandler / University of Nebraska-Lincoln Communication

In addition to being extremely cost effective, TES leads the other technologies in such areas as safety, ease of permitting and life expectancy. Siting flexibility is another advantage TES offers that was particularly important for UNL, as the City Campus is “landlocked,” observed Agarwal. “There is a certain amount of NIMBY-ism [not in my backyard] involved with other types of systems and only so many places we can build,” he acknowledged.

Related to the siting issue is the ease with which TES can be expanded. The system will be located on the edge of the campus and have oversized piping so it can be expanded in the future. Stefan Newbold, director of UNL Engineering Services, pointed out that the ideal time to look at installing TES is when a chilled water plant is already close to reaching its capacity. “It grows chilled water capacity significantly,” he explained. “TES is economical anyway, but it becomes more so when you throw in not having to expand a chilled water plant.”

Findings from the Cool Solutions study made up the basis of an article in District Energy’s quarterly newsletterYou are leaving WAPA.gov. The story also included a comparison of TES with a hypothetical battery system.

Tried and true pays off
The new TES system, which has four times the capacity of the East Campus plant, will be commissioned over the winter and spring, and be ready for the 2018 cooling season. The system controls will be centralized to eliminate the need for additional staff and to minimize new demands on existing staff. Using existing infrastructure and operators who already have chiller experience is another way the technology keeps costs down.

As the grid and the power supply continue to evolve, large facilities and municipalities will have to look at new solutions for managing their energy use. And while every end-user faces different circumstances, UNL’s story is a reminder that sometimes the best answer to a new challenge is an “old” idea.

Source: District Energy, 2nd Quarter 2017

White paper, training explore evolution of demand response

Utilities have long used demand response to deal with high wholesale electricity prices or generation shortfall. What was once accomplished with phone calls to large industrial customers or one-way controls on aggregated residential loads is now done in near-real time with sophisticated two-way communication. Yet, despite the fact that this strategy has become an integral part of grid operations in the U.S., there has been no agreement on a definition of demand response.

The Peak Load Management Association You are leaving WAPA.gov. (PLMA) set out last year to develop a consistent definition for demand response to use across its three training courses on the topic. A demand response dialogue that included several experts in the field took place in September 2016 and was recorded and archived on the PLMA website. At the 2016 PLMA conference later that year, the discussion continued with a panel presentation, Defining the Evolution of Demand Response: From 1.0 to 3.0 and Beyond.

Demand response evolution

Artwork by Peak Load Management Association

Three epochs
The white paper from these discussions breaks down demand response into three periods beginning with the first interruptible tariffs for large commercial and industrial customers. Demand response was primarily used to provide energy (MWh) and capacity (MW) during periods of high wholesale prices, shortfall of generation or transmission capacity or unexpected emergency grid-operating situations. Utility staff contacted a commercial customer, usually a day or hours ahead of a forecasted event, to manually change power consumption onsite. Also, residential customers voluntarily allowed utilities to install load-control devices to cycle their water heaters and air conditioners. Verification usually came from the utility meter which was read on its regular cycle.

Current demand response strategies provide more precise energy and capacity to support the wholesale marketplace, along with sophisticated, near-instantaneous ancillary services such as non-spinning and spinning reserves and frequency and voltage support. Measurement and verification occur in almost real-time measurements (either utility or non-utility) and often serve as confirmation of customer performance during demand response events. Two-way communication also allows for greater customer feedback and engagement.

Demand response is evolving to be a component of broader distributed energy resources both behind and in front of the meter. The service benefits demand response offers in this capacity, both to the grid operator and to the customer, include volt/var control, renewable energy integration and localized distribution system congestion management. The future of demand response may move away from traditional utility control to automatic, pre-programmed triggers based on price thresholds.

Learn more
Two upcoming courses expand on PLMA’s demand response white paper to provide utility and regulatory staff and industry trade allies with a greater understanding of the evolution of demand response. Join subject matter experts from PLMA member organizations in Portland, Oregon, Sept. 26 or in San Francisco, California, Oct. 25.

Presentations will cover current technology and market conditions, utility case studies and more. Demand response will be compared to other load management strategies, and participants will discuss how to design a load management portfolio that serves your utility’s needs.

The training is open to all industry stakeholders, with significantly discounted rates to PLMA member organization staff.

Source: Peak Load Management Association, 8/8/17