Shell and Sumitomo Buy 15 Percent Stake in Minigrid Firm PowerGen


Africa-focused PowerGen, a market leader in minigrids, adds to Shell’s expanding investments in off-grid energy access.

Shell is among a number of energy majors chasing

Shell and Sumitomo have taken a minority stake in African minigrid firm PowerGen.

The pair will have a combined ownership of 15 percent after leading the most recent funding round alongside six other investors. Shell will get a seat on the board, with Sumitomo taking an observer seat. Financial details of the Series B round were not revealed.

PowerGen has connected around 15,000 homes and business via its minigrid installations in Kenya, Tanzania, Sierra Leone and Nigeria. It will use the new funds to build out its presence on the ground, but not for project finance.

Shell CEO Ben van Beurden has set a target for the company of providing reliable power 100 million people who don’t already have it by 2030

Ben Attia, a research analyst at Wood Mackenzie Power & Renewables, said PowerGen’s claim to be the market leader for African minigrids is well founded.

“They have scale and first-mover advantage,” said Attia.
“They are also involved in a fund with CrossBoundary Energy Access that effectively enables the securitization of a portfolio of minigrid assets,” he added. “This is so important because it’s very difficult for minigrid companies to scale because they are building capital-intensive infrastructure that makes infrastructure level returns.”
“So the payback periods for these systems can be quite long,” Attia said. “PowerGen has worked out an innovative way to offload a number of projects, get paid for them, and then go out and build some more.”
PowerGen recently became the first company in the minigrids sector to buy a competitor when it acquired Rafiki Power from E.ON in August.
Attia said this latest deal fits with the pattern of Shell’s previous acquisitions, as it moves toward a “utility of the future” business model tying energy access to other products and services such as internet provision and the sale of electrical appliances.
Shell has invested in a number of companies as it looks to hit that 100-million-people target. Earlier this year it secured access to India’s commercial and industrial solar market with a stake in Orb Energy. It also has a stake in minigrid firm Husk Power and has made several investments in off-grid metering manufacturer SteamaCo.
The other six participating investors in the Series B round were Omidyar Network, Acumen, Renewable Energy Performance Platform, EDFI ElectriFI, DOB Equity, and Microgrid Catalytic Capital Partners.
Sam Slaughter, CEO at PowerGen, told GTM the challenge of helping the company hit its 100-million-customer target was an exciting one.
“Shell has a lot of depth in Africa, so geographically they’re really strong,” Slaughter said. “They’re entering the utility market at a time when things are changing and evolving, and it is going to take new thinking and new ideas.”
PowerGen’s focus is presenting itself and its peers as an alternative, or complementary, solution to Africa’s frequently failing national utilities, Slaughter added.
“It’s about changing the rhetoric about minigrids from being a niche application for certain communities with certain characteristics to a conversation about how private companies like PowerGen can be alternative utility operators to these national utilities,” he said.
To better influence these conversations, Slaughter said the company will need to continue to scale. He considers a critical mass to be around 200,000 connections, up from the current tally of 15,000. Building the systems and infrastructure required to deliver that will be the focal point for the new funds.
“Our immediate priorities are scaling up in Nigeria and Sierra Leone as aggressively as we can, while continuing steady growth in our more mature markets of Kenya and Tanzania,” said Slaughter.



Vestas: Renewables Sector Should Be ‘Outraged’ at Footing the Bill for Grid Upgrades



Senior executive at the world’s leading wind turbine supplier thinks fossil fuel companies should cover the investments needed for a flexible grid.

The cost of doing business.

PARIS — Laying the costs of integrating more variable power into the grid at the feet of the renewable energy sector is an “outrage,” a Vestas executive has said.

Morten Dyrholm, senior vice president at the world’s leading maker of wind turbines, was responding to claims that grid-integration costs undercut the notion that renewables can now thrive without government support in many markets.

Speaking as part of a conference session at European Utility Week, Dyrholm said the wind sector has worked hard to get to the point of subsidy-free deployment.

Fellow panelist Dominique Jamme, managing director of the French energy regulator CRE, said that as renewables grow from 30 percent of the mix to 70 percent and beyond, the system costs required to stabilize the grid aren’t being factored into claims that wind and solar are viable without government support.

“But at 60, 70 and 80 percent, you have the issue of sustaining stability of the system. As you put in more renewables, you are adding cost,” Jamme added, before asking, “Who is going to pay for the [energy] storage?”

Dyrholm, who leads Vestas’ marketing, communications and public affairs efforts, responded strongly.

“And now we have finally become unsubsidized, andwe have to support system costs? In the meantime, we let the young kids do the hard work for us. They go on the streets. They go and fight for change, and we sit here as an industry and talk about ‘system cost’?”

“We should be as outraged as them, and we should be united [as an industry] in asking for change. We have a special obligation in our industry, and I am not just saying that to sell more turbines. I’m saying that on behalf of my kids. We need to be more outraged when we see examples of something not working just because of the regulations in place.”

Project developers cover system costs like grid connections in many markets, and these are typically factored in when calculating the levelized cost of electricity for new projects.

In most markets, additional costs to support renewables on the network, including energy storage, are ultimately passed to consumers and generators. Any increased charges on consumer bills can become highly political.

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Mark Zuckerberg grilled over Facebook’s spotty track record on diversity

Author: Salvador Rodriguez      Published: 10/23/19       CNBC

  • Mark Zuckerberg did not have many answers when asked about the details of Facebook’s civil rights work by Rep. Joyce Beatty during a Congress hearing on Wednesday.
  • Beatty, who is the chair of the Financial Services Diversity and Inclusion Subcommittee, grilled Zuckerberg on a number of topics related to race, diversity and civil rights.
  • Beatty used her time during a hearing that was focused on Facebook’s libra cryptocurrency project to emphasize Facebook’s checkered past with minorities.

Facebook’s Mark Zuckerberg testified on Project Libra — Here are some key moments

Facebook CEO Mark Zuckerberg has talked a lot about civil rights this week. But when Rep. Joyce Beatty, D-Ohio, asked him for details during a congressional hearing on Wednesday, Zuckerberg did not have many answers.

close dialog

Beatty, who is the chair of the Financial Services Diversity and Inclusion Subcommittee, grilled Zuckerberg on a number of topics related to race, diversity and civil rights. She asked about Facebook’s contracting of minority or women-owned firms, allegations that Facebook’s ad systems allowed housing discrimination, and the company’s on-going civil rights audit, which is being conducted by Relman Dane & Colfax, a Washington D.C. civil rights law firm.

“Do you know who the firm that you employ for civil rights is?” Beatty asked.

“Congresswoman, I don’t off the top,” Zuckerberg said.

Facebook’s behavior broadly is an issue: Axios’ Ina Fried

“How could you not know when you have employed the most historical, the largest civil rights firm to deal with issues that are major, and this is what’s so frustrating to me. It’s almost like you think this is a joke when you have ruined the lives of many people, discriminated against them,” Beatty said.

Beatty used her time during a hearing that was focused on Facebook’s libra cryptocurrency project to emphasize Facebook’s checkered past with minorities. The company has been accused of having a “black people problem” by a former employee, and it’s been accused of censoring black people by users.


“Do you know what the percentage of African Americans are on Facebook in comparison to majority folks? Do you know what the percentages are?” Beatty asked.

“People using the Facebook?” Zuckerberg responded.

“Yes. Do you know what the percentages are for African Americans?” Beatty asked.

“I don’t because we don’t collect the races of people,” Zuckerberg said.

“Well it came out in a report in the Pew Research Center that was sent to you. So maybe you just don’t read a lot of things that deal with civil rights or African Americans,” Beatty said.

Zuckerberg spoke about Facebook’s civil rights audit in hisprepared remarks for his testimony before the House Financial Services Committee on Wednesday. He also talked about civil rights during a speech on free expression on Thursday at the Georgetown University, invoking civil rights leaders Frederick Douglass and Martin Luther King Jr. to explain why Facebook will not fact-check political ads. Zuckerberg’s remarks were criticized by Bernice King, the daughter of King Jr.

“I have a lot of questions I’m going to send to you that I’m not going to be able to get through, and I would like an answer because this is appalling and disgusting to me,” Beatty told Zuckerberg.

WATCH: Here’s how to see which apps have access to your Facebook data — and cut them off

DC will now allow solar panels in historic districts! (Mostly.)

Author:  David Alpert (Executive Director)   Published: 11/8/19       Greater Greater Washington

Homeowners may be able to put solar panels on the fronts of their roofs in historic districts, under new sustainability guidelines released by DC’s Historic Preservation Office Friday. HPO may still push homeowners to adjust colors, appearance, and so forth of their panels, but won’t outright prohibit them.

This move follows a firestorm which erupted when the Historic Preservation Review Board, the mayorally-appointed body which makes most preservation decisions,forbade Takoma homeowner Steven Preister from putting solar panels on the front of his house.

Preister argued that saving the planet required doing everything possible to increase renewable energy generation. He pointed to DC’s Clean Energy law which mandates DC reach 100% renewable energy by 2032 including 10% from locally-generated solar power.

Multiple board members said they understood the severity of the climate crisis, but at the same time, they simply weren’t willing to tolerate the level of visual intrusiveness it involved. “I am in favor of sustainability,” said Gretchen Pfaehler, but “this detracts from the slope of the roof.” Chris Landis said “I realize that we are in crisis… But I just have this vision of a row of houses with solar panels on the front of them and it just — it upsets me.”

HPO changes the guidelines

For years, the presevation office has been working on a document outlining guidelines for integrating sustainability and historic preservation. The drafts extol the fact that reusing an existing building is greener than tearing it down and building a new one. But early drafts also said that green features like rain barrels, green roofs, and solar panels shouldn’t be visible from the street at all.

Slowly, with successive drafts, HPO has revised its language to be more tolerant of sustainability features, but stopped short of actually allowing solar panels on the most visible front of a roof in most cases. Following the Preister case and pressure from inside and outside the government, that has changed.

A press release from the DC government says the newest version of the guidelines “allow for solar on front facing sloped roofs if they are compatibly designed with low-profile panels set flush with and in a complementary color with the roof.” It quotes Mayor Muriel Bowser in saying, “By streamlining the ability to install solar and other green infrastructure in our historic neighborhoods, we are aiming to make Washington the healthiest, greenest, and most livable city in the country.”

The guidelines themselves aren’t quite so explicit. The relevant sections say:

4. For buildings with sloped roofs, locate solar installations on secondary elevations to minimize their visibility from public street view. If visible from public street view, use low-profile panels set flush with the roof and in a complementary color with the roof finish to avoid a discordant appearance.

5. If it is necessary to install panels on a primary elevation to achieve solar efficiency, installations should be pulled away from roof edges and ridges, compositionally balanced on the roof, and not result in irregular “saw-tooth” compositions. Use low-profile panels set coplanar and flush with the roof, and panel and panel frames that match the color of the surrounding roof. The use of a solar skin or solar shingles that match the texture and appearance of the roof is encouraged.

It sounds that the preservation office still would really rather people not put panels on the fronts of their roofs. It’s not clear what “if it is necessary” to — will the preservation office argue with homeowners about whether it is necessary? Will the board be asking applicants to prove necessity?

Or, is it just that this will be allowed if the front face is the side of the roof with the most sun (so, for instance, people with north-facing houses with sloped roofs can’t put low-performing panels on their north roofs, but for south-facing houses, that’s fine).

This reflects common practice in documents coming from the preservation office, which will readily tell people what they can’t do but never say “you can do this.” At best, they will say, essentially, that a homeowner isn’t not allowed to do something.

In fairness, the preservation office is in fact often quite flexible at working with property owners, and allow a fair amount of development or changes to historic buildings. They simply resist, to the bitter end, ever explicitly writing down that something is okay. They prefer to have applicants bring ideas and then they will discuss. The problem is that leaves homeowners in the dark about what is and isn’t okay, and more at the whims of whether neighbors choose to oppose or support.

Ask the preservation office to be more clear

It’s terrific that the preservation office is allowing solar panels. They should go one step further and clearly say so, period. For instance, it could say “Solar panels may be located on primary elevations if they are south-facing, provided they use low-profile panels.”

Forcing homeowners to set panels away from the edges will reduce the potential for solar generation and seems unnecessary. There will and can be differences of opinion on whether seeing the undersides of panels is so anathema to a historic district, but this kind of thing only makes the panels a little bit more expensive instead of truly cutting down on the power they can create.

They should also allow HPO staff to approve front-facing panels without forcing homeowners to go to a full board meeting. (I’d even more prefer that DC law state that solar panels which don’t damage the roof underneath aren’t subject to historic review at all, but of course the preservation office and board would never voluntarily limit their ability to control anything.)


US power grid attack points surge with proliferating DERs: A hacker ‘will eventually get in’ Critical infrastructure protection standards are essential —

Author: Robert Walton   Published: 11/4/19     Deep Dive

As the United States’ electric system becomes more distributed, security experts say the growing array of internet-connected sensors and industrial control systems presents a potential vulnerability that is not clearly understood and could be exploited to cause blackouts.

So far, utilities have kept hackers from disrupting the grid and Critical Infrastructure Protection (CIP) standards have helped to keep defenses robust. But the attack surface is only growing.

“[W]e cannot pretend that standards themselves equate to security.”

Scott Aaronson

VP of security and preparedness, Edison Electric Institute

“Regulations and standards and associated penalties are important,” Scott Aaronson, vice president of security and preparedness for the Edison Electric Institute (EEI), told Utility Dive. “But we always look to go beyond simply having standards. They have a role … but we cannot pretend that standards themselves equate to security.”

EEI represents investor-owned utilities, and Aaroson said that as more distributed resources come online it is vital they are operated in coordination with utilities and allow for sufficient visibility.

“As soon as you interconnect with the grid in any two-way [power] flow, now there needs to be some elevated sense of security,” Aaronson said.  “And if you then start to aggregate those resources to the level they have an impact on the [bulk electric system], then you really need to have a baseline level of security.”

Security experts agree that the baseline level of security provided by CIP compliance is a starting point and not an end goal.

“It’s critical not to confuse compliance with security,” Sharon Chand, principal with Deloitte Cyber Risk Services, told Utility Dive. The CIP standards set out minimum security requirements for assets critical to the nation’s bulk electric system, she said, which “scopes out a lot of things” utilities control in their operations.

The National Institute of Standards and Technology is seeking technology vendors to help develop solutions to secure the “Industrial Internet of Things,” potentially including sensors, network monitoring, system monitoring, and data acquisition devices related to grid analysis. It’s a welcome effort at a more “holistic” approach to security said Chand.

Because threats are growing more varied and dispersed.

For example, researchers at New York University’s Tandon School of Engineering have concluded multiple high-wattage electric vehicle charging stations could be used in tandem to launch an attack and potentially cause a blackout in Manhattan. A September report from U.S. Government Accountability Office concluded industrial control systems and the rise of distributed resources mean the grid “is becoming more vulnerable to cyberattacks.”

“The GAO report is exceedingly important but unfortunately somewhat late,” Paul Steidler a senior fellow at the Lexington Institute, told Utility Dive. “There’s a real dearth of public information about the dangers of grid attacks.”

Could residential solar pose a vulnerability?

Perhaps the most visible sign of the growth of distributed resources is residential rooftop solar, but could your neighbor’s small array pose a grid threat?

“The thing is, we don’t know and we can’t say for sure,” said Steidler. “But someone is going to try to exploit it.”

The North American Electric Reliability Corporation’s (NERC) CIP standards cover infrastructure critical to the bulk system and that typically means resources under 75 MW won’t be covered, according to Nor-Cal Controls, which provides engineering and training services.

“If I am able to hack into to a single solar array, I can probably disable those. It can have a local impact.”

Sharon Chand

Principal, Deloitte Cyber Risk Services

“It is only in the last two or three years that there’s been enough solar on the grid to impact utilities and grid reliability,” security expert John Franzino wrote in a July 2019 blog for Nor-Cal Controls. “Now that we’re having substantial amounts of solar penetration, both the utilities and NERC have to pay more and more attention to solar. They have not caught up with solar yet, but that will change.”

The thing to remember, says Chand, “it’s not about the size of the asset on the grid — it’s about what it is connected to, and what the function of the device is.”

“If I am able to hack into to a single solar array, I can probably disable those. It can have a local impact,” said Chand. “But I probably can’t use that access to make them catch fire or do harm.”

Utilities have pretty good security already, but cracks are showing

Compared with other industries, the utility sector actually does a pretty good job of keeping systems safe but constant improvement will be necessary to maintain security, CyberX Vice President of Industry Security Phil Neray told Utility Dive.

The firm recently assigned a median security score to industries, recommending its clients attain a minimum of 80 points out of 100. The oil and gas sector averaged 74 points; electric utilities averaged 70 points; the manufacturing sector scored 63; and the pharmaceutical and chemical sectors scored 62 points.

“As these smart devices get deployed, they increase the attack surface” of the distributed grid … “Most experts recognize you can’t prevent a determined and sophisticated attacker. They will eventually get in.”

Phil Neray

Vice President of Industry Security, CyberX

“Energy utilities are ahead of the other industrial sectors in terms of paying attention to security and eliminating vulnerabilities,” Neray said. The advantage is due to the widespread security regulations in place, he said, though “the regulations don’t really go far enough.”

Some utilities are using outdated operating systems and unencrypted passwords the firm’s “2020 Global IoT/ICS Risk Report” concluded. Two thirds of sites the report monitored lack automatic antivirus updates.

“As these smart devices get deployed, they increase the attack surface” of the distributed grid Neray said. “Most experts recognize you can’t prevent a determined and sophisticated attacker. They will eventually get in.”

Industrial control devices increasingly targeted

The industrial control systems and sensors used to operate and gain visibility into distributed resources are increasingly being targeted. In the past, these systems were relatively unknown. “Security by obscurity,” Neray calls it. Control systems had specific functions and were often unconnected to other systems, making attacks less likely and more difficult.

But last year, security firm Dragos said it had tracked 163 public vulnerability advisories with an industrial control system impact that were issued by groups like the U.S. Cybersecurity and Infrastructure Security Agency.

Companies are adding sensors and embedded devices to control networks, said Neray, in order to monitor operations and boost efficiency. Those operating systems are increasingly connected to corporate internal tech systems, to transfer data.

Network-level monitoring is the only way to manage security on some of these devices, he said, but there are no regulations requiring it.

“In a sense, utility control and security teams are blind,” Neray said.

The threat from inside

Russia, China and North Korea are the actors commonly thought to threaten the United States’ electric grid. But security experts warn the most disruption could be caused if a hacker is able to get some help from the inside of a utility.

A report from the U.S. Department of Energy last year identified more than a half dozen “capability gaps” in the power sector’s defenses, including supply chain and trusted partner issues.

“Internal threats from inadvertent human error and disgruntled employees and contractors pose a far great cyberthreat to the critical infrastructure than a nation-state.”

Eddie Habibi

CEO and Founder, PAS Global

“The electric utility industry, and the IT consultants that serve it, cannot forget the human element in cyberattacks,” said Steidler. “A bad actor on the inside can do damage and/or collaborate with outside attackers. It is critical to have proper and thorough background checks on those leading the fight to prevent cyberattacks.”

Eddie Habibi, CEO and founder of cybersecurity firm PAS Global, said enhanced background checks for critical private sector employees would be a good step to improve security.

“Internal threats from inadvertent human error and disgruntled employees and contractors pose a far great cyberthreat to the critical infrastructure than a nation-state,” Habibi told Utility Dive in an email.

Utilities will have a chance to work closely with supply chain partners in a couple of weeks, when NERC holds the biennial GridEx simulation. This will be the fifth GridEx event, which has grown to encompass thousands of participants.

The exercise, a simulated grid attack,  gives utilities the opportunity to test their response plans. But an assessment of the 2017 event concluded none of the utilities participating in that year’s exercise turned to vendors for help or information. In response, NERC recommended a focus on communication and coordination in the 2019 event, including broadening the involved stakeholders and developing processes for sharing critical information.

NERC officials are keeping a tight lid on the GridEx V scenario details, but spokesman Martin Coyne told Utility Dive that “each entity looks at its plans, infrastructure and unique aspects of its systems, which increasingly includes distributed energy resources.”

GridEx this year will run Nov. 13-14, with an executive tabletop exercise occurring at the same time.

IOUs see downside to identifying CIP violators

While standards and security requirements can help make the grid safer, the real work must be done by utilities say experts.

“The problem is not the standards, it’s more the implementation,”  Steidler said. “Standards have to be continually evolved and they’re not going to be perfect.”

“It’s a constant process to keep regulations up to date, responding to innovations and advanced threats. CIP requirements do a good job in terms of minimum protection,” Deloitte’s Chand agreed.

But there is disagreement on how to handle grid participants who do not meet those standards.

“Utilities are image-conscious and frankly the fines for grid violations are not that expensive … There needs to be some pain; you need a punitive aspect to encourage the best behavior.”

Paul Steidler

Senior Fellow, Lexington Institute

Currently, entities that violate cybersecurity standards are not publicly named by NERC or the Federal Energy Regulatory Commission, though there is a proposal to change that. Under the proposal, NERC would include a public cover letter with each notice that discloses the name of the violator,the reliability standards violated and the amount of penalties assessed.

Steidler said the move is a step in the right direction. He called for not just naming violators but also increasing penalties.

“The mere fact there is no public embarrassment for a utility that is slipshod in its practices is quite alarming,” he said. “Utilities are image-conscious and frankly the fines for grid violations are not that expensive. It’s a modest cost of doing business. There needs to be some pain; you need a punitive aspect to encourage the best behavior.”

The utility sector sees this a bit differently, though there is broad agreement on the need for greater security. But EEI’s Aaronson said it is possible that naming violators in combination with other data could actually give a hand to would-be attackers.

“Generally speaking, the naming of a violator in and of itself is not problematic,” Aaronson said. But when that information is combined with other data points, it can help attackers design new exploits or identify patched weaknesses.

“I would much rather keep adversaries in the dark,” Aaronson said. “It’s a new world order. We are living in a time when adversaries are taking advantage of our transparency.”

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Tesla, Walmart settle lawsuit over fires; solar panels to remain in place

Author:  Robert Walton       Published: 11/6/19      Utility Dive

Dive Brief:

  • Walmart and Tesla have settled a lawsuit in which the big box retaileralleged solar panels had sparked rooftop fires at more than a half dozen stores, causing millions of dollars in damages. Terms of the deal were not disclosed.
  • The Nov. 4 agreement, filed in the Supreme Court of the State of New York, requests that Walmart’s complaint be “voluntarily discontinued without prejudice.”
  • Walmart had accused Tesla of “gross negligence” and requested the company deenergize more than 240 solar systems at its stores. According to a statement from the companies addressing the settlement, the solar arrays will continue operating in place.

Dive Insight:

With the lawsuit settled, Walmart and Tesla will now go about reenergizing the solar systems that were taken offline. The retailer is aiming to supply 100% of its energy from renewables eventually, but currently uses around 24%.

Walmart says it has more than 300 renewable energy projects in operation or under development worldwide, and in the U.S., the company says it is the largest on-site green power generator.

So far, the company has leaned on Power Purchase Agreements to grow its renewable footprint. “We are still exploring direct investment in projects — an ownership model — that meet the company’s financial requirements,” Walmart said in a document explaining its approach to renewables.

In its lawsuit, Walmart claimed Tesla solar panels sparked fires at at least seven stores in 2018. The retailer accused Tesla of “gross negligence,” and claimed the company failed to follow “prudent industry practices” in installing, operating and maintaining its solar systems.

The lawsuit was filed this summer around the same time Tesla “relaunched” its flagging solar division. The company rolled out a plan to rent rooftop panels to homeowners in six states, starting at $50/month for a 3.8 kW system.

Tesla bought SolarCity in 2016, when it was the leading solar installer in the United States. The company’s market share has sagged since the deal, however.

More airports consider going off the grid as power outages ground flights

Author: Harriet Baskas           Published:  11/3/19               CNBC Markets

  • Power outages have disrupted operations at several of the nation’s airports.
  • To provide a more reliable source of power, or a better backup system, airports are turning to new power sources.
  • Pittsburgh International Airport plans to become the first major U.S. airport to create a self-sufficient energy system, or microgrid.
  • It will use solar and natural gas sources from its own property.
H/O: Pittsburgh International Airport aerial view
Aerial view of the Pittsburgh International Airport
Source: Pittsburgh International Airport

Should airports go off the grid? Pittsburgh International Airport — and others — think so.

Remember that 11-hour power outage at Hartsfield-Jackson Atlanta International Airport in December 2017 that canceled hundreds of flights, stranded thousands of passengers and costDelta Airlines alone an estimated $50 million in lost business?

Since then power outages linked to everything from equipment failures, faulty wires and an explosion at an electric power station have disrupted operations at Ronald Reagan Washington National Airport, Los Angeles International Airport, New York’s LaGuardia Airport, John Wayne Airport in Orange County, California, Philadelphia International Airport and McCarran International Airport in Las Vegas.

And just last Saturday, power at Louis Armstrong New Orleans International Airport went out — twice — due to high winds associated with Tropical Storm Olga. In addition to flight cancelations and delays, a celebratory open house for the new $1 billion terminal opening Nov. 6 had to be postponed by a few hours.

Microgrids to the rescue

During power outages at airports, generators and other forms of back-up power usually kick-in to power essential emergency lighting, but boarding, deplaning, airfield activity and the business of the airport often comes to a standstill.

H/O: Pittsburgh International Airport solar farm rendering
Pittsburgh International Airport: rendering of the solar farm for microgrid.
Source: Pittsburgh International Airport

That’s just one reason Pittsburgh International Airport recently declared its intention to become the first major U.S. airport to create a self-sufficient energy system, or microgrid, using only energy sources — solar and natural gas — from its own property.

“After watching what happened in Atlanta and Los Angeles, I think every airport CEO across the country, and probably around the world, wondered if they were ready and prepared,” said Christina Cassotis, CEO of the Allegheny Airport Authority, which operates the Pittsburgh airport. “Here the answer is yes, but we’d like to make sure we can continue to operate in any circumstance.”

To that end, Pittsburgh International Airport plans to have its microgrid in place by 2021 to power the entire airport, including the airfield, the on-site Hyatt hotel and a Sunoco station.

H/O: Veolia operator inside TWA Hotel microgrid plant
Veolia operator inside TWA Hotel microgrid plant
Source: Christophe Majani-D’Inguimbert | Veolia North America

Power for PIT’s microgrid will be generated through the airport’s onsite natural gas wells and almost 8,000 solar panels covering eight acres of the airport land. A connection to the traditional electrical grid will remain, but only as an option for emergency or backup power when needed.

“It has everything to do with resiliency and redundancy,” said Cassotis. “We wanted to make sure we could do everything with the assets we have to enhance the safety of the traveling public and insure continued operations. As a bonus, we get to lower the cost of energy.”

PIT airport officials project an energy bill savings of $500,000 in the first year of the project alone. In addition to lowering its energy costs, the airport also will receive annual lease payments from Peoples Natural Gas through the project.

Many military facilities, college campuses, hospital complexes, industrial parks and other large institutions already have some sort of microgrid in place to insure uninterrupted power. In general, these systems are connected to existing grids but can disconnect and operate on their own with power from batteries, diesel-powered generators or, ideally, solar or another source of renewable power, said Craig Schiller, a manager specializing in aviation at the global energy nonprofit Rocky Mountain Institute.

While Detroit Metro Airport already has a microgrid in place, airports in Los Angeles, Denver, San Diego, Boston, Orange County, California and elsewhere are now exploring and creating microgrids as well.

Early next year, RMI will be publishing an airport microgrid toolkit funded by a $450,000 grant from the National Academies of Sciences, Engineering and Medicine’s Transportation Research Board to help speed the process.

Microgrids can give airports greater control over the energy they need and use and, in many cases, save airports money on energy costs, said RMI’s Schiller. “But the bottom line is maximizing an airport’s ability to meet its function.”

Airports not only fuel the economic vitality of a community, but in an emergency, an airport with its own power grid can become a critical community asset.

“99% of the time customers won’t notice whether an airport is using its microgrid resources or not,” said Schiller. “But if there’s a local, regional or natural disaster, the airport will be able to provide people a place to go or a way to get out of the city.”

Airport hotel with a microgrid island

Most microgrids are designed to connect to existing power grids. But the 512-room TWA Hotel and conference center opened in May 2019 in the landmark Eero Saarinen-designed TWA Flight Center at John F. Kennedy International Airport’s Terminal 5 is an “islanded microgrid” operating independent of New York City’s electric grid.

H/O: TWA hotel lobby bar
TWA hotel lobby bar
Christophe Majani-D’Inguimbert | Veolia North America

The hotel has its own 9,000-square-foot microgrid/cogeneration power plant on the roof, fueled by natural gas.

The plant generates all the electricity for the hotel campus and harvests waste heat from engines for hot water and other uses. A battery storage system helps with peak loads and backup.

“Think of it as a Tesla on the hotel’s roof,” said Tyler Morse, chief executive of MCR/Morse Development.

“The entire city and the airport could be down, but the hotel would still be operating, with people having cocktails at the bar,” said Mike Byrnes, senior vice president for Veolia North America, which has operators on duty 24/7 to operate and maintain the hotel’s microgrid.

Beyond ensuring that cocktails can continue to be served during a blackout, the TWA Hotel’s power plant will also contribute to the business’ bottom line.

Hotel developer Morse said the Con Edison electric bills would have cost $5 million per year.

“The $15 million we spent to build the plant will be paid back in three years,” said Morse. “And we’ll be saving $4 million annually.”

Which should be enough to buy everyone a round of drinks, or three, in the lobby bars in the next New York City blackout.

Microgrids have a big role to play in the energy sector: Here’s why


An Energy Breakthrough Could Store Solar Power for Decades

Author: Adam Popescu            Published:   11/3/19      Bloomberg Businessweek

relates to An Energy Breakthrough Could Store Solar Power for Decades

For decades, scientists have sought an affordable and effective way of capturing, storing, and releasing solar energy. Researchers in Sweden say they have a solution that would allow the power of the sun’s rays to be used across a range of consumer applications—heating everything from homes to vehicles.

Scientists at Chalmers University of Technology in Gothenburg have figured out how to harness the energy and keep it in reserve so it can be released on demand in the form of heat—even decades after it was captured. The innovations include an energy-trapping molecule, a storage system that promises to outperform traditional batteries, at least when it comes to heating, and an energy-storing laminate coating that can be applied to windows and textiles. The breakthroughs, from a team led by researcher Kasper Moth-Poulsen, have garnered praise within the scientific community. Now comes the real test: whether Moth-Poulsen can get investors to back his technology and take it to market.

The system starts with a liquid molecule made up ofcarbon, hydrogen, and nitrogen. When hit by sunlight, the molecule draws in the sun’s energy and holds it until a catalyst triggers its release as heat. The researchers spent almost a decade and $2.5 million to create a specialized storage unit, which Moth-Poulsen, a 40-year-old professor in the department of chemistry and chemical engineering, says has the stability to outlast the 5-to 10-year life span of typical lithium-ion batteries on the market today.

relates to An Energy Breakthrough Could Store Solar Power for Decades
Moth-Poulsen with a small sample of his molecular solar thermal liquid.

The most advanced potential commercial use the team developed is a transparent coating that can be applied to home windows, a moving vehicle, or even clothing. The coating collects solar energy and releases heat, reducing electricity required for heating spaces and curbing carbon emissions. Moth-Poulsen is coating an entire building on campus to showcase the technology. The ideal use in the early going, he says, is in relatively small spaces. “This could be heating of electrical vehicles or in houses.”

A big unknown is whether the system can produce electricity. While Moth-Poulsen believes the potential exists, his team is focused for now on heating. His research group is one of about 15 trying to tackle climate change with molecular thermal solar systems. Part of what motivates them is the Paris Agreement, which commits signatories to pursue efforts to limit global warming to 1.5C (2.7F).

Moth-Poulsen plans to spin off a company that would advance the technology and says he’s in talks with venture capital investors. The storage unit could be commercially available in as little as six years and the coating in three, pending the $5 million of additional funding he estimates will be needed to bring the coating to market. In May he won the Arnbergska Prize from the Royal Swedish Academy of Sciences for his solar energy projects.

The professor doesn’t have precise cost estimates for the technology but is aware that it will need to be affordable. One cost advantage is that the system doesn’t need any rare or expensive elements. Jeffrey Grossman, a professor in the department of materials science and engineering at the Massachusetts Institute of Technology who’s also developing energy storage molecules, calls the Chalmers University team’s work “crucial if we want to see this energy conversion storage approach commercialized.”

Peter Schossig, who runs the Fraunhofer Institute for Solar Energy Systems in Freiburg, Germany, says he wants to help turn the Swedish team’s research into a product. But, he says, “There’s still a ways to go.”

First cyberattack on solar, wind assets revealed widespread grid weaknesses, analysts say

Author: Robert Walton         Published: 11/4/19        Utility Dive

New details of a denial-of-service attack earlier this year show an energy sector with uneven security.

A March 5 cyberattack of U.S. wind and solar assets is back in the news, with fresh documents helping shed light not just on the extent, but also the simplicity of the first-of-its-kind intrusion. Cybersecurity experts say it reveals a utility sector not sufficiently vigilant, and failing to employ the most simple fixes.

The North American Electric Reliability Corporation (NERC) in Septemberrevealed details about the denial-of-service (DoS) attack, urging utilities to keep firewalls patched and up to date, but held back the name of the impacted entity. E&E News last week revealed, based on documents obtained through a public records request, the victim was sPower.


Owned by AES and AIMCo, sPower bills itself as the United States’ largest private owner of operating solar assets. Though there was no loss of generation, the March cyberattack impacted the company’s visibility into about 500 MW of wind and PV across California, Utah and Wyoming.

The attack is widely being called the “first” on renewable generators, though it is not clear the grid intrusion was entirely intentional. Attackers exploited a known vulnerability in an unpatched Cisco firewall, causing a series of reboots over 12 hours. But intruders did not press the attack further and E&Ereports it is unclear they understood the firewall was connected to the energy grid.

Security experts say the attack is a wake-up call for the electric sector and a sign that clear vulnerabilities remain.

“The news begs a bigger question about cybersecurity regulations for the energy industry,” Phil Neray, vice president of security firm CyberX, said in an email. “The manner in which it was carried out was very basic — exposing some essential weaknesses in the way energy companies currently patch and monitor their network devices.”

Utilities must do basic security maintenance

CyberX released a report last month that concluded utility networks and unmanaged devices are “soft targets for adversaries.” Many utilities use outdated operating systems and unencrypted passwords that leave them vulnerable, the firm found.

That means in some instances utilities are not even maintaining the most basic of protection: keeping systems up to date.

“The simplicity of this attack should make generators sit up and take notice.”

Jason Haward-Grau

Chief information security officer, PAS Global

Neray said the grid is made vulnerable by network appliances like the ones that were compromised in the attack on sPower: directly exposed to the internet, unpatched and with limited malware capabilities. “We’ve seen attackers go after unpatched network devices in the past,” he said.

The March 5 attack is “one more example …. that cyber risk in the industrial space is not only real, but operant,” Jason Haward-Grau, chief information security officer at cyber firm PAS Global, said in an email.

“The simplicity of this attack should make generators sit up and take notice,” Haward-Grau said. “This was a ‘simple’ IT attack on an unpatched firewall, which was still vulnerable, in spite of the patch being available.”