Consumers in Power Markets Will Soon Change the Industry

Puerto Rico Microgrid Regulations outline renewable energy, CHP, and storage standards, enabling islanded systems, PREPA interconnection, excess energy sales, and IRP alignment to boost resilience, distributed resources, and community power across the recovering grid.

Key Points

Rules defining microgrids, requiring 75 percent renewables or CHP, and setting interconnection and PREPA fee frameworks.

✅ 75 percent renewables or CHP; hybrids allowed

✅ Registration, engineer inspection, and annual generation reports

✅ PREPA interconnection fees; excess energy sales permitted

The Puerto Rico Energy Commission unveiled 29 pages of proposed regulations last week for future microgrid installations on the island.

The regulations, which are now open for 30 days of public comment, synthesized pages of responses received after a November 10 call for recommendations. Commission chair José Román Morales said it’s the most interest the not-yet four-year-old commission has received during a public rulemaking process.

The goal was to sketch a clearer outline for a tricky-to-define concept -- the term "microgrid" can refer to many types of generation islanded from the central grid -- as climate pressures on the U.S. grid mount and more developers eye installations on the recovering island.

“There’s not a standard definition of what a microgrid is, not even on the mainland,” said Román Morales.

According to the commission's regulation, “a microgrid shall consist, at a minimum, of generation assets, loads and distribution infrastructure. Microgrids shall include sufficient generation, storage assets and advanced distribution technologies, including advanced inverters, to serve load under normal operating and usage conditions.”

All microgrids must be renewable (with at least 75 percent of power from clean energy), combined heat and power (CHP) or hybrid CHP-and-renewable systems. The regulation applies to microgrids controlled and owned by individuals, customer cooperatives, nonprofit and for-profit companies, and cities, but not those owned by the Puerto Rico Electric Power Authority (PREPA). Owners must submit a registration application for approval, including a certification of inspection from a licensed electric engineer, and an annual fuel, generation and sales report that details generation and fuel source, as well as any change in the number of customers served.

Microgrids, like the SDG&E microgrid in Ramona in California, can interconnect with the PREPA system, but if a microgrid will use PREPA infrastructure, owners will incur a monthly fee. That amounts to $25 per customer up to a cap of $250 per month for small cooperative microgrids. The cost for larger systems is calculated using a separate, more complex equation. Operators can also sell excess energy back to PREPA.

Big goals for the island's future grid

In total, 53 groups and companies, including Sunnova, AES, the Puerto Rico Solar Energy Industries Association (PR-SEIA), the Advanced Energy Management Alliance (AEMA), and the New York Smart Grid Consortium, submitted their thoughts about microgrids or, in many cases, broader goals for the island’s future energy system. It was a quick turnaround: The Puerto Rico Energy Commission offered a window of just 10 days to submit advice, although the commission continued to accept comments after the deadline.

“PREC wanted the input as fast as possible because of the urgency,” said AES CEO Chris Shelton.

AES’ plan includes a network of “mini-grids” that could range in size from several megawatts to one large enough to service the entire city of San Juan.

“The idea is, you connect those to each other with transmission so they can have a co-optimized portfolio effect and lower the overall cost,” said Shelton. “But they would be largely autonomous in a situation where the tie-lines between them were broken.”

According to estimates provided in AES’ filing, utility-scale solar installations over 50 megawatts on the island could cost between $40 and $50 per megawatt-hour. Those prices make solar located near load centers an economic alternative to the island’s fossil-fuel generating plants. The utility’s analysis showed that a 10,000-megawatt solar system could replace 12,000 gigawatt-hours of fossil generation, with 25 gigawatt-hours of battery storage leveling out load throughout the day. Puerto Rico’s peak load is 3,000 megawatts.

In other filings, PR-SEIA urged a restructuring of FEMA funds so they’re available for microgrid development. GridWise Alliance wrote that plans should consider cybersecurity, and AEMA recommended the commission develop an integrated resource plan (IRP) that includes distributed energy resources, microgrids and non-wires alternatives.

An air of optimism, though 1.5 million are still without power

After the commission completes the microgrid rulemaking, a new IRP is next on the commission’s to-do list. PREPA must file that plan in July, and regulators are working furiously to make sure it incorporates the recent flood of rebuilding recommendations from the energy industry.

Though the commission has the final say when it comes to approval of the plan, PREPA will lead the IRP process. The utility’s newly formed Transformation Advisory Council (TAC), a group of 11 energy experts, will contribute.

With that group, along with New York’s Resiliency Working Group, lessons from California's grid transition, the Energy Commission, the utility itself, and the dozens of other clean energy experts and entrepreneurs who want to offer their two cents, the energy planning process has a lot of moving parts. But according to Julia Hamm, CEO of the Smart Electric Power Alliance and a member of both the Energy Resiliency Working Group and the TAC, those working to establish standards for Puerto Rico’s future are hitting their stride.

“Certainly over the past three months, it has been a bit of a challenge to ensure that everybody has been coordinating efforts. Just over the past couple of weeks, we’ve seen some good progress on that front. We’re starting to see a lot more communication,” she said, adding that an air of optimism has settled on the process. “The key stakeholders all have a very common vision for Puerto Rico when it comes to the power sector.”

Nisha Desai, a PREPA board member who is liaising with the TAC, affirmed that collaborators are on the same page. “Everyone is violently in agreement that the future of Puerto Rico involves renewables, microgrids and distributed generation,” she said.

The TAC will hold its first in-person meeting in mid-January, and has already consulted with the utility on its formal fiscal plan submission, due January 10.

Though many taking part in the process feel the once-harried recovery is beginning to adopt a more organized approach, Desai acknowledges that “there are a lot of people in Puerto Rico who feel forgotten.”

Puerto Rico’s current generation sits at just 72.6 percent, in a nation facing longer, more frequent outages due to extreme weather. The government recently offered its first estimate that about half the island, 1.5 million residents, remains without power.

In late December and into January, 1,500 more crewmembers from 18 utilities in states as far flung as Minnesota, Missouri and Arizona will land on the island to aid further restoration through mutual aid agreements.

“The system is getting up to speed, getting to 100 percent, but there’s still some instability,” said Román Morales. “Right now it’s a matter of time.”

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Synchrophasors deliver PMU-based, real-time monitoring for the smart grid, helping NYISO prevent blackouts, cut costs, and integrate renewables, with DOE-backed deployments boosting reliability, situational awareness, and data sharing across regional partners.

Key Points

Synchrophasors, or PMUs, are grid sensors that measure synced voltage, current, and frequency to enhance reliability.

✅ Real-time grid visibility and situational awareness

✅ Early fault detection to prevent cascading outages

✅ Supports renewable integration and lowers operating costs

Have you ever heard of a synchrophasor? It may sound like a word out of science fiction, but these mailbox-sized devices are already changing the electrical grid as we know it.

The grid was born over a century ago, at a time when our needs were simpler and our demand much lower. More complex needs are putting a heavy strain on the aging infrastructure, which is why we need to innovate and update our grid with investments in a smarter electricity infrastructure so it’s ready for the demands of today.

That’s where synchrophasors come in.

A synchrophasor is a sophisticated monitoring device that can measure the instantaneous voltage, current and frequency at specific locations on the grid. This gives operators a near-real-time picture of what is happening on the system, including insights into power grid vulnerabilities that allow them to make decisions to prevent power outages.

Just yesterday I attended the dedication of the New York Independent System Operator's smart grid control center, a $75 million project that will use these devices to locate grid problems at an early stage and share these data with their regional partners. This should mean fewer blackouts for the State of New York. I would like to congratulate NYISO for being a technology leader.

And not only will these synchrophasors help prevent outages, but they also save money. By providing more accurate and timely data on system limits, synchrophasors make the grid more reliable and efficient, thereby reducing planning and operations costs and addressing grid modernization affordability concerns for utilities.

The Department has worked with utilities across the country to increase the number of synchrophasors five-fold -- from less than 200 in 2009 to over 1,700 today. And this is just a part of our commitment to making a smarter, more resilient grid a reality, reinforced by grid improvement funding from DOE.

In September 2013, the US Department of Energy announced up to $9 million in funding to facilitate rapid response to unusual grid conditions. As a result, utilities will be able to better detect and head off potential blackouts, while improving day-to-day grid reliability and helping with the integration of solar into the grid and other clean renewable sources.

If you’d like to learn more about our investments in the smart grid and how they are improving our electrical infrastructure, please visit the Office of Electricity Delivery and Energy Reliability’s www.smartgrid.gov.

Patricia Hoffman is Assistant Secretary, Office of Electricity Delivery & Energy Reliability

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US Electricity Sales Decline amid population growth and GDP gains, as DOE links reduced per capita consumption to energy efficiency, warmer winters, appliances, and bulbs, while hotter summers and rising AC demand may offset savings.

Key Points

US electricity sales fell 3% since 2010 despite population and GDP growth, driven by efficiency gains and warmer winters.

✅ DOE links drops to efficiency and warmer winters

✅ Per capita residential use fell about 7% since 2010

✅ Rising AC demand may offset winter heating savings

Since 2010, the United States has grown by 17 million people, and the gross domestic product (GDP) has increased by $3.6 trillion. Yet in that same time span, electricity sales in the United States actually declined by 3%, according to data released by the U.S. Department of Energy (DOE), even as electricity prices rose at a 41-year pace nationwide.

The U.S. decline in electricity sales is remarkable given that the U.S. population increased by 5.8% in that same time span. This means that per capita electricity use fell even more than that; indeed, the Department of Energy pegs residential electricity sales per capita as having declined by 7%, even as inflation-adjusted residential bills rose 5% in 2022 nationwide.

There are likely multiple reasons for this decline in electricity sales. Department of Energy analysts suggest that, at least in part, it is due to increased adoption of energy-efficient appliances and bulbs, like compact fluorescents. Indeed, the DOE notes that there is a correlation between consumer spending on “energy efficiency” and a reduction in per capita electricity sales, while utilities invest more in delivery infrastructure to modernize the grid.

Yet the DOE also notes that states with a greater increase in warm weather days had a corresponding decrease in electricity sales, as milder weather can reduce power demand across years. In southern states, the effect was most dramatic: for instance, from 2010 to 2016, Florida had a 56% decrease in cold weather days that would require heating and as a result, saw a 9% decrease in per capita electricity sales.

The moral is that warm winters save on electricity. But if global temperatures continue to rise, and summers become hotter, too, this decrease in winter heating spending may be offset by the increased need to run air conditioning in the summer, and given how electricity and natural gas prices interact, overall energy costs could shift. Indeed, it takes far more energy to cool a room than it does to heat it, for reasons related to the basic laws of thermodynamics. 

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EU Smart Meter Analytics integrates AMI data with grid edge platforms, enabling back-office efficiency, revenue assurance, and customer insights via cloud and PaaS solutions, while system integration cuts costs and improves utility performance.

Key Points

EU smart meter analytics uses AMI data and cloud to improve utility performance, revenue assurance, and outcomes.

✅ AMI underpins grid edge analytics and utility IT/OT integration

✅ Cloud and PaaS reduce costs and scale data-driven applications

✅ Focus shifts from meter rollout to back-office and revenue analytics

Europe's investment in smart meters has begun to open up the market for analytics that benefit both utilities and customers.

Two new reports from GTM Research demonstrate the substantial investment in both advanced metering infrastructure (AMI) and specific customer analytics segments -- the first report analyzes the progress of AMI deployment in Europe, while the second is a comprehensive assessment of analytics use cases, including AI in utility operations, enabled by or interacting with AMI.

The Third Energy Package mandated EU member states to perform a cost-benefit analysis to evaluate the economic viability of deploying smart meters and broader grid modernization costs across member states. Two-thirds of the member states found there was a net positive result, while seven members found negative or inconclusive results.

“The mandate spurred AMI deployment in the EU, but all member states are deploying some AMI. Even without an overall positive cost-benefit outcome, utilities found pockets of customers where there is a positive business case for AMI,” said Paulina Tarrant, research associate at GTM Research and lead author of “Racing to 2020: European Policy, Deployment and Market Share Primer.”

Annual AMI contracting peaked in 2013 -- two years after the mandate -- with 29 million contracted that year. Today, 100 million meters have been contracted overall. As member states reach their respective targets, the AMI market will cool in Europe and spending on analytics and applications will continue to ramp up, aligning with efforts to invest in smarter infrastructure across the sector, Tarrant noted.

Between 2017 and 2021, more than $30 billion will be spent on utility back-office and revenue-assurance analytics in the EU, reflecting the shift toward the digital grid architecture, according to GTM Research’s Grid Edge Customer Utility Analytics Ecosystems: Competitive Analysis, Forecasts and Case Studies.

The report examines the broad landscape of customer analytics showing how AMI interacts with the larger IT/OT environment of a utility.

“The benefits of AMI expand beyond revenue assurance -- in fact, AMI represents the backbone of many customer utility analytics and grid edge solutions,” said Timotej Gavrilovic, author of the Grid Edge Customer Utility Ecosystems report.

Integration is key, according to the report.

“Technology providers are integrating data sets, solutions and systems and partnering with others to provide a one-stop shop serving broad utility needs, increasing efficiencies and reducing costs,” Gavrilovic said. “Cloud-based deployments and platform-as-a-service offerings are becoming commonplace, creating an opportunity for utilities to balance the cost versus performance tradeoff to optimize their analytics systems and applications.”

A diverse array of customer analytics applications is a critical foundation for demonstrating the positive cost-benefit of AMI.

“Advanced analytics and applications are key to ensuring that AMI investments provide a positive return after smart meters are initiated,” said Tarrant. “Improved billing and revenue assurance was not enough everywhere to show customer benefit -- these analytics packages will leverage the distributed network infrastructure, including advanced inverters used with distributed energy resources, and subsequent increased data access, uniting the electricity markets of the EU.”

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Hydro One Bill Redesign Spending sparks debate over Ontario Energy Board regulation, rate applications, privatization, and digital billing upgrades, as surveys cite confusing invoices under the Fair Hydro Plan for residential, commercial, and industrial customers.

Key Points

$15M project to simplify Hydro One bills, upgrade systems, and improve digital billing for commercial customers.

✅ $9M spent; $6M proposed for C&I and large-account changes.

✅ OEB to rule amid rate application and privatization scrutiny.

✅ Survey: 40% of customers struggled to understand bills.

Ontario's largest and recently privatized electricity utility has spent $9-million to redesign bills and is proposing to spend an additional $6-million on the project.

Hydro One has come under fire for spending since the Liberal government sold more than half of the company, notably for its CEO's $4.5-million pay.

Now, the NDP is raising concerns with the $15-million bill redesign expense contained in a rate application from the formerly public utility.

"I don't think the problem we face is a bill that people can't understand, I think the problem is rates that are too high," said energy critic Peter Tabuns. "Fifteen million dollars seems awfully expensive to me."

But Hydro One says a 2016 survey of its customers indicated about 40 per cent had trouble understanding their bills.

Ferio Pugliese, the company's executive vice-president of customer care and corporate affairs, said the redesign was aimed at giving customers a simpler bill.

"The new format is a format that when tested and put in front of our customers has been designed to give customers the four or five salient items they want to see on their bill," he said.

About $9-million has already gone into redesigning bills, mostly for residential customers, Pugliese said. Cosmetic changes to bills account for about 25 per cent of the cost, with the rest of the money going toward updating information systems and improving digital billing platforms, he said.

The additional $6-million Hydro One is looking to spend would go toward bill changes mostly for its commercial, industrial and large distribution account customers.

Energy Minister Glenn Thibeault noted in a statement that the Ontario Energy Board has yet to decide on the expense, but he suggested he sees the bill redesign as necessary alongside legislation to lower electricity rates introduced by the province.

"With Ontarians wanting clearer bills that are easier to understand, Hydro One's bill redesign project is a necessary improvement that will help customers," he wrote.

"Reductions from the Fair Hydro Plan (the government's 25 per cent cut to bills last year) are important information for both households and businesses, and it's our job to provide clear, helpful answers whenever possible."

The OEB recently ordered Hydro One to lower a rate increase it had been seeking for this year to 0.2 per cent down from 4.8 per cent.

The regulator also rejected a Hydro One proposal to give shareholders all of the tax savings generated by the IPO in 2015 when the Liberal government first began partially privatizing the utility. The OEB instead mandated shareholders receive 62 per cent of the savings while ratepayers receive the remaining 38 per cent.

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U.S. power grid cyberattacks expose critical infrastructure to Russian hackers, DHS warns, targeting SCADA, smart grid sensors, and utilities; NERC CIP defenses, microgrids, and resilience planning aim to mitigate outages and supply chain disruptions.

Key Points

U.S. power grid cyberattacks target utility control systems, risking outages, disruption, requiring stronger defenses.

✅ Russian access to utilities and SCADA raises outage risk

✅ NERC CIP, DHS, and utilities expand cyber defenses

✅ Microgrids and renewables enhance resilience, islanding capability

The U.S. Department of Homeland Security has revealed that Russian government hackers accessed control rooms at hundreds of U.S. electrical utility companies, gaining far more access to the operations of many more companies than previously disclosed by federal officials.

Securing the electrical grid, upon which is built almost the entirety of modern society, is a monumental challenge. Several experts have explained aspects of the task, potential solutions and the risks of failure for The Conversation:

1. What’s at stake?

The scale of disruption would depend, in part, on how much damage the attackers wanted to do. But a major cyberattack on the electricity grid could send surges through the grid, much as solar storms have done.

Those events, explains Rochester Institute of Technology space weather scholar Roger Dube, cause power surges, damaging transmission equipment. One solar storm in March 1989, he writes, left “6 million people without power for nine hours … [and] destroyed a large transformer at a New Jersey nuclear plant. Even though a spare transformer was nearby, it still took six months to remove and replace the melted unit.”

More serious attacks, like larger solar storms, could knock out manufacturing plants that build replacement electrical equipment, gas pumps to fuel trucks to deliver the material and even “the machinery that extracts oil from the ground and refines it into usable fuel. … Even systems that seem non-technological, like public water supplies, would shut down: Their pumps and purification systems need electricity.”

In the most severe cases, with fuel-starved transportation stalled and other basic infrastructure not working, “[p]eople in developed countries would find themselves with no running water, no sewage systems, no refrigerated food, and no way to get any food or other necessities transported from far away. People in places with more basic economies would also be without needed supplies from afar.”

2. It wouldn’t be the first time

Russia has penetrated other countries’ electricity grids in the past, and used its access to do real damage. In the middle of winter 2015, for instance, a Russian cyberattack shut off the power to Ukraine’s capital in the middle of winter 2015.

Power grid scholar Michael McElfresh at Santa Clara University discusses what happened to cause hundreds of thousands of Ukrainians to lose power for several hours, and notes that U.S. utilities use software similar to their Ukrainian counterparts – and therefore share the same vulnerabilities.

3. Security work is ongoing

These threats aren’t new, write grid security experts Manimaran Govindarasu from Iowa State and Adam Hahn from Washington State University. There are a lot of people planning defenses, including the U.S. government, as substation attacks are growing across the country. And the “North American Electric Reliability Corporation, which oversees the grid in the U.S. and Canada, has rules … for how electric companies must protect the power grid both physically and electronically.” The group holds training exercises in which utility companies practice responding to attacks.

4. There are more vulnerabilities now

Grid researcher McElfresh also explains that the grid is increasingly complex, with with thousands of companies responsible for different aspects of generating, transmission, and delivery to customers. In addition, new technologies have led companies to incorporate more sensors and other “smart grid” technologies. He describes how that, as a recent power grid report card underscores, “has created many more access points for penetrating into the grid computer systems.”

5. It’s time to ramp up efforts

The depth of access and potential control over electrical systems means there has never been a better time than right now to step up grid security amid a renewed focus on protecting the grid among policymakers and utilities, writes public-utility researcher Theodore Kury at the University of Florida. He notes that many of those efforts may also help protect the grid from storm damage and other disasters.

6. A possible solution could be smaller grids

One protective effort was identified by electrical engineer Joshua Pearce at Michigan Technological University, who has studied ways to protect electricity supplies to U.S. military bases both within the country and abroad. He found that the Pentagon has already begun testing systems, as the military ramps up preparation for major grid hacks, that combine solar-panel arrays with large-capacity batteries. “The equipment is connected together – and to buildings it serves – in what is called a ‘microgrid,’ which is normally connected to the regular commercial power grid but can be disconnected and become self-sustaining when disaster strikes.”

He found that microgrid systems could make military bases more resilient in the face of cyberattacks, criminals or terrorists and natural disasters – and even help the military “generate all of its electricity from distributed renewable sources by 2025 … which would provide energy reliability and decrease costs, [and] largely eliminate a major group of very real threats to national security.”

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