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Data Science in Utilities

Opportunities in Utility Data Science

The Promise of Big Data

The utility industry is now entering a golden age of data. Efforts by the government and utilities to modernize infrastructures are bearing fruit. Smart grids have become the new norm. The much-heralded Internet of Things will make them even more extensive and ubiquitous.

What’s more:

  • Advanced Metering Infrastructures are generating real-time energy usage data as often as every 15 minutes. According to Accenture’s report on Realizing the Full Potential of Smart Metering, 500 million smart meters are predicted to deploy in the developed world by 2020.
  • With money from investment grants, utilities have been pouring funds into synchrophasors, or phasor monitoring units (PMUs). PMUs collect measurements such as voltage every 20 to 60 seconds.

Combine this with:

  • Historical, in-house customer datasets
  • Outage management system reports
  • Data from social media, online forms and customer calls
  • Video, photo and mapping
  • Not to mention publicly available sources (e.g., weather, credit, market)

All this may give you an idea of what data analysts mean by big.

Now, if only utilities can find a way to:

  • Harness and process the velocity, variety, volume and veracity of these data
  • Invest in the systems, including cloud-based components, as well as the experts needed to understand them
  • And commit to changing old operational habits

Then, they will have the means to make customers, businesses, regulators – and their accountants – very, very happy. Not to mention their data scientist employees.

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The Impact of Smart Grid Technology

It’s hard to overstate the impact of smart grid technology on utility performance. They have helped utilities go from being reactive to proactive overnight.

As Jeff Kelly points out in The Industrial Internet and Big Data Analytics: Opportunities and Challenges, utilities now have the technology to:

  • Improve their monitoring and forecasts of energy consumption
  • Manage energy procurement with greater precision
  • Pinpoint inefficiencies at macro (e.g., city-wide) and micro (e.g., household) levels
  • Predict potential power outages and equipment failures
  • Hone their customer segmentation and tailor their offerings based on customer behavior
  • Drastically reduce their operational costs

In a pleasing knock-on effect, accurate data predictions can also boost a utility’s performance on settlement markets.

Optimizing Efficiency and Forecasting Consumption

Utilities have always been creative in managing supply and demand. But today they’re using big data to refine that process. Utility data scientists are hard at work creating ways to maximize operational efficiencies and predict future consumption.

Forecasting is especially important for utilities that are diversifying their portfolios to include renewable – and fluctuating – energy sources (e.g., wind, solar and tidal). Simulations and models make it possible to determine when energy will be needed and at what level.

Lindsay Clark notes:

“By offering tariffs which discourage consumption while supply is weak, and releasing stored energy in anticipation of peaks in demand, utilities can avoid investing in production which matches only the maximum levels of demand.”

In Hawaii, for example, smart grid data is helping utilities understand what they can expect of solar facilities:

  • High noon produces the greatest power generation.
  • Late afternoon, when the sun is low relative to the roof angle, results in a significant drop off.

Utilities have adjusted their daily use of solar accordingly.

Managing Asset Health

Ailing assets are, as the old cliché goes, accidents waiting to happen. In response to the challenge, utility data scientists are getting aggressive, uniting asset data in a single system and using analysis to identify equipment, networks or pipelines that are headed for failure. This predictive approach also enables them to intelligently budget for replacements.

To get a comprehensive picture of an asset, data scientists may draw on:

  • Real-time sensor data
  • Historical data
  • Operating history
  • Maintenance reports
  • Technician notes
  • Flyover data from drones
  • Predictive models (e.g., expected earthquake effects)
  • Public datasets (e.g., weather reports)
  • And more

For instance, data analysts at the asset health center at American Electric Power Co., Inc. (AEP) are combining equipment-derived operational data with intelligent IT applications. By employing big data algorithms and analytic software, they can closely monitor AEP’s transmission infrastructure.

Yorkshire Water, a water supplier and waste management firm in the U.K., has been equally proactive. Its IT experts are using analytics to predict pollution in a network of 62,000 miles of water and sewer mains. When blockages threaten the sewage overflow, engineers can be deployed immediately.

Outage Management and Restoration

According to General Electric (GE), outages cost the U.S. economy $80 billion per year – $1.5 billion each week. For many businesses and the government, those figures are unacceptable.

Big data to the rescue. With information from smart grids, sensors, historical data, the Internet (e.g., twitter feeds) and asset health systems, utilities can:

  • Respond to outages quickly and efficiently
  • Avoid them completely

For instance, if they know a storm is on the horizon, utilities may use predictive models to pinpoint potential areas in the line of fire; divert utility crews to hot spots and services to shelters; and warn municipalities and customers.

If an outage does occur, the smart grid will report it immediately. Utility data scientists can then employ big data to:

  • Verify, isolate and assess the damage
  • Comb internal sources and the Internet for updates on real-time conditions
  • Analyze drone and spatial data to identify obstacles (e.g., downed lines, floods, blocked roads)
  • Broadcast customer information on social media (e.g., restoration efforts, timeline to power resumption)

Customer Behavior and Engagement

Data scientists are tapping into all kinds of sources – smart meters, call centers, social media, billing systems, mobile apps, etc. – to discover more about their customers. Cleaned up and analyzed, these data can help companies:

  • Understand consumption trends
  • Tailor rates more effectively
  • Identify those who are eligible for efficiency or demand-response programs
  • Soothe unhappy customers and reinforce loyalty
  • Educate individuals and businesses about steps to reduce consumption

Energy companies have already made strides in catering to their customers. In addition to monitoring call centers with sentiment analysis and searching social media and emails for customer opinions, they’re providing:

  • Website tools and mobile apps to help customers budget for monthly usage
  • Variable-rate structures that put usage into the hands of customers
  • Texts or emails when consumption is nearing a target budget
  • Consumption graphs and comparison statistics (“you vs. your neighbors”) on monthly bills
  • Instant responses to questions on Twitter
  • Text or phone messages with outage notifications and updates

As Jill Feblowitz highlights in a 2012 HP whitepaper:

“The ability to get rate increases approved by regulators depends on demonstrating customer satisfaction.”

Educated and satisfied customers + smarter utilities = better end-of-year profits.

Data Risks and Regulations

The Challenges Ahead

The utility industry isn’t setting off celebration fireworks just yet. Creating a data-driven company comes with its own set of challenges.

For utilities, these include:

  • Ignorance – Many CEOs are finding it difficult to understand the costs of, and requirements for, implementing big-data solutions. Nobody wants to waste money on systems that may be outdated in a year.
  • Apathy – U.S. utilities are largely regulated. Without fierce competition, interest in investing in data science and analytics solutions could weaken.
  • Complexity – Utilities and grids are grappling with increasingly complex real-time events. Distributed energy resources and new technologies are further complicating matters.

Data scientists who enter the utilities field may find themselves confronting data locked in siloed systems or the lack of a single, centralized data platform. Integrating existing systems can be a nightmare in and of itself.

A Matter of Privacy

Then, of course, there’s the not-so-small issue of privacy. With their giant data warehouses full of personal information, utilities are incredibly vulnerable to hackers.

In 2012, New York State Electric & Gas and Rochester Gas and Electric (NYSEG) sent out a letter to 1.8 million utility customers informing them that their data – including Social Security numbers, dates of birth, and, in some cases, financial account numbers – had been compromised.

In response, New York’s Public Service Commission was forced to review the data security policies and procedures of every utility operating in the state. Takeaway: if it can happen there, it can happen anywhere.

It gets worse. The more sources utilities draw upon for their data, the greater the likelihood of customer blowback:

  • Smart meters have already prompted complaints about safety and unwarranted data usage.
  • Utilities using sentiment analysis (e.g., social media) run the risk of being accused of privacy invasion.

Can You Handle the Data?

But perhaps the biggest headache for utility data scientists at the moment is volume. Utilities have been much more proactive than other industries in updating their infrastructures and investing in technology, but they’re still facing a data tsunami.

In Jeff McMahon’s 2013 article, Utilities Dumbstruck By Big Data From Smarter Grid, an interviewee points out that a single calculation might require access to 4 terabytes of data – more than the Library of Congress contains.

Moreover, even if utilities do have the means to handle data at present, they’re worried about the future. Where else could data come from? Which data will be important to keep?

In the same article, Dan Rosanova, a senior technology architect with the consulting firm West Monroe Partners, sums up the quandary:

“The reason big data is such a big challenge, is not only do we not know what tools we’re going to use, but the future demand on storage capabilities is pretty unclear at this point. We just know that they’re big.”

History of Data Analysis and Utilities

“Here is our poetry, for we have pulled down the stars to our will.” – Ezra Pound

In June of 1910, a wild-haired young poet arrived at the docks of New York City. By day, he would harangue the architects of the New York Public Library. By night, he would gaze at the skyscrapers ablaze with electric light.

A couple of years later, Ezra Pound put his impressions to paper:

“Squares after squares of flame, set and cut into the ether. Here is our poetry, for we have pulled down the stars to our will.”

It was a relatively new sight – electric lights in skyscraper windows. Poetically beautiful? Yes, but on the mundane level, that electricity still had to be monitored, managed, and paid for. And that requires data. Where did the modern analysis of utilities data begin?

Samuel Insull’s Light Bulb Moment

Chicago in the 1890s. Samuel Insull, president of the Chicago Edison company, was facing a conundrum. To meet peak power demand at dinner time, the company had purchased a lot of power-generating equipment. But this generating capacity was practically all wasted during off-peak periods.

Inspired by a trip to Brighton in England, Insull came up with a pricing plan that took into account not only total consumption, but also the timing of that consumption. Businesses like street railways and ice houses were offered low rates for off-peak usage, while customers using power during peak times paid more.

The company’s load factor – the average power divided by the maximum load in each time period – surged. Low rates attracted new customers. Insull’s business was charged to a new level – thanks to a strategic use of data.

The Early Days

As the 20th century progressed, utilities grew to be massive. And customer data grew right along with them.

Local power grids morphed into giant, interconnected systems with huge load centers and high-capacity power lines. To keep up with the ballooning data, in 1965, W.A. Duncan of Kentucky Utilities brought online the electric utility industry’s first all-digital system operation computer – the Westinghouse PRODAC 510.

Nevertheless, due to limited data collection and processing, the industry was still working with estimates:

  • Fixed and dual tariffs were the norm; nighttime power was generally charged at a lower rate than daytime.
  • Meters, which had been around since the 1880s, continued to be manually checked. Monthly water bills might be estimated from one annual reading.
  • Peak prices were averaged out and passed along to consumers equally.

Energy demand continued to increase, however, and during the 1970s, unprecedented usage levels led to a series of blackouts, power cuts and brownouts. Clearly, a little innovation was called for. Power loads and usage data were not about to go away.

Automatic Meter Reading (AMR): First Steps In Automation

Enter Ted Paraskevakos. During the late 1960s and early 1970s, this Greek inventor perfected a method for transferring electronic data (e.g., a phone number) via a telephone line. He dubbed it “Caller ID.”

Paraskevakos’s original idea eventually morphed into a new invention, a sensor monitoring system that used digital transmission to read utility meters. In 1977, Metretek, Inc. – the first commercially available, fully automated meter reading and load management system – made its debut, using IBM’s series 1 mini-computer.

Suddenly, utilities had a constant stream of data from automatic meter readings. This information could be stored and analyzed as a company wished. Utility data analysts were now – pun intended – cooking with gas.

There was more to come, though. Energy usage continued to grow exponentially. To keep up, engineers needed increasingly powerful equipment to deliver and track it. And of course, that meant a flood of data to deal with.

Advanced Metering Infrastructure (AMI): Remote Management

Throughout the 1980s, the utility industry continued to refine its Automated Meter Reading (AMR) technology. In addition to electronic meter readings, engineers now added capabilities like alarms (for tampering, leak detection, low battery, etc.), interval data and log meter events.

By the 1990s, AMR was supplanted by Advanced Metering Infrastructure (AMI). AMI brought smart meters capable of programmed data collection and remote reporting on command. Two-way, continuous communication with a central system had arrived on the scene.

Now utilities could monitor electricity usage data in real time. Demand forecasting, demand response, and flow monitoring made it possible to more intelligently conserve energy and to take rapid emergency action.

In 2000, Enel deployed its Telegestore Project. Using smart meters connected via low bandwidth power lines, this remote management system linked 27 million homes across Italy.

It was also at about this time when the term “smart grid” appeared. Smart grids manage and optimize electricity distribution by automatically analyzing data about customer usage and energy loads. Naturally, even more sophisticated sensing and quality management technology soon followed, producing yet more data.

Sensors and Synchrophasors: Automated Quality

Utility companies at this time became increasingly interested in the potential for increasing electricity quality and reliability. The best way to do this was by quickly detecting anomalies in quality throughout a power grid by means of synchronized detection and comparison. These synchronized measurements are carried out with devices called synchrophasors.

The 2012 book, Smart Grid Communications and Networking, describes a project led by the Bonneville Power Administration (BPA), a federal agency based in the Pacific Northwest. Beginning in the early 1990s, BPA started installing a network of sensors on its grid to enable high-speed monitoring and control of extensive geographic areas using synchrophasors.

It succeeded. In 2000, BPA became the the first utility to implement a comprehensive adoption of synchrophasors in its Wide Area Measurement System (WAMS). Several other similar projects are underway, as of early 2014, yielding, of course, an ocean of data.

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