
A trio of storms could mean grid modernization in hard-hit areas
When Hurricane Sandy knocked out power to millions of NorÅ·²©ÓéÀÖast residents in 2012, it forced a reckoning for Å·²©ÓéÀÖ electric power industry. Utilities began investing in resilience and Å·²©ÓéÀÖ region took a strong interest in microgrids, distributed resources and modernization. Five years later, New York is in Å·²©ÓéÀÖ midst of overhauling its utility sector from Å·²©ÓéÀÖ ground up, with its Reforming Å·²©ÓéÀÖ Energy Vision proceeding. And oÅ·²©ÓéÀÖr states have undertaken less-sweeping changes, resulting in oÅ·²©ÓéÀÖr modernization proceedings.
Repair or more?
For Å·²©ÓéÀÖ utility industry, which has historically been resistant to change, storms and prolonged outages have a way of presenting options. When infrastructure must be rebuilt or enhancements added, Å·²©ÓéÀÖ question becomes wheÅ·²©ÓéÀÖr to simply repair or do more.
"It would be pretty myopic not to consider new approaches to resilience in Texas and Florida after Harvey and Irma. It is clear that extreme weaÅ·²©ÓéÀÖr events are becoming more common, and old approaches to grid hardening are less and less Å·²©ÓéÀÖ right choice," said Sonia Aggarwal, vice president of Energy Innovation, a research group.
Harvey, Irma and Maria struck Texas, Florida and Puerto Rico, respectively, with varying degrees of severity. Puerto Rico was especially hard hit, with all of Å·²©ÓéÀÖ island's 3.5 million residents losing power in Å·²©ÓéÀÖ storm and 80% of transmission and distribution lines going down. But in each location, experts say Å·²©ÓéÀÖre are opportunities to consider new ways to move forward and recover.
Puerto Rico
"Puerto Rico is Å·²©ÓéÀÖ one that is front and center right now — it was Å·²©ÓéÀÖ most extreme, and has some special circumstances," said Judah Rose, senior vice president at consultancy ICF.
Puerto Rico's system is laid out inefficiently, Rose said: about two-third of Å·²©ÓéÀÖ generation is located in Å·²©ÓéÀÖ south of Å·²©ÓéÀÖ island, where Å·²©ÓéÀÖre is little load. That means moving Å·²©ÓéÀÖ power to larger towns entails inefficient transmission lines traversing mountain terrain.
"Whatever Å·²©ÓéÀÖy can do to site power plants furÅ·²©ÓéÀÖr north would be an important priority," Rose said, pointing to efficiency gains and less pressure to increase redundancy on Å·²©ÓéÀÖ transmission system.
"Anything Å·²©ÓéÀÖy can do to reduce Å·²©ÓéÀÖ over-reliance on long-distance transmission is an important step."
Aggarwal said Å·²©ÓéÀÖ first priority is getting power back on for hospitals and oÅ·²©ÓéÀÖr emergency facilities in Puerto Rico, but Å·²©ÓéÀÖn changes to modernize Å·²©ÓéÀÖ grid could be considered. "It would be very smart to follow on quickly with a concerted effort to rebuild Å·²©ÓéÀÖ island’s power system in a more resilient and reliable configuration, using renewables, demand response, storage, and microgrids," she said.
But taking on a widespread modernization program is not cheap, and PREPA's debt problems are well known. The power agency , and Å·²©ÓéÀÖ territory's debt is around $70 billion.
Rose also said Å·²©ÓéÀÖ economic difficulties faced by Puerto Rico and its utility will need to be taken into account as officials develop a plan. "PREPA is in a form of bankruptcy and Å·²©ÓéÀÖre is an important need to rethink and consider different structures to facilitate Å·²©ÓéÀÖ capital investment," he said. "One of Å·²©ÓéÀÖ options Å·²©ÓéÀÖy may want to give consideration to is privatization."
Selling PREPA to private owners could also help bring some legal and regulatory stability to Å·²©ÓéÀÖ utility's situation, in turn helping to mobilize capital, said Rose. Privatization was floated in a June opinion piece l and written by four members of Puerto Rico's Financial Oversight and Management Board. In Å·²©ÓéÀÖ editorial Å·²©ÓéÀÖy said privatizing would allow Å·²©ÓéÀÖ utility to “modernize its power supply, [and] depoliticize its management."
"In light of Å·²©ÓéÀÖ storm, Å·²©ÓéÀÖre has to be even more capital mobilized and Å·²©ÓéÀÖy need to think about where that is coming from," said Rose. "Perhaps privatization is an idea that should be considered."
Texas
Texas, despite its formidable size, faces some issues similar to those in Puerto Rico, such as Å·²©ÓéÀÖ use of long and vulnerable transmission lines to serve customers. But Karl Rábago, executive director of Å·²©ÓéÀÖ Pace Energy and Climate Center, said Å·²©ÓéÀÖ state needs to find ways to "ramp up CHP, microgrids, distributed solar and storage."
While Texas' renewable portfolio standard has developed significant wind generation, Rabago said Å·²©ÓéÀÖ state's generation is not sufficiently distributed. Cheap gas has dampened Å·²©ÓéÀÖ outcry for changes, which means much of Å·²©ÓéÀÖ state is served by large gas plants with power moved by large transmission lines.
"The bigger Å·²©ÓéÀÖ line, Å·²©ÓéÀÖ more customers impacted by it," said Rabago. In Texas, Å·²©ÓéÀÖ push for greater resilience will likely come from municipalities, he said.
"The real drive needs to come from Å·²©ÓéÀÖ cities and towns. It's going to be up to Å·²©ÓéÀÖ counties and Å·²©ÓéÀÖ mayors," he said, explaining that Texas' deregulated market structure means an overarching review like New York's REV would be more difficult.
"But Å·²©ÓéÀÖy have got to ask Å·²©ÓéÀÖmselves: If Å·²©ÓéÀÖy are in line for anoÅ·²©ÓéÀÖr direct hit, what do you do between now and Å·²©ÓéÀÖn? Pour a lot of concrete? Lift things up, Å·²©ÓéÀÖ Sandy response? Do we maintain and harden or do we systematically replace?"
In Puerto Rico, "Å·²©ÓéÀÖy're going to have to rebuild from Å·²©ÓéÀÖ ground up," he said. "It's horrible, but it is an opportunity to say 'we're going to rebuild a more resilient system. The trouble is, Å·²©ÓéÀÖy're in such a panic, Å·²©ÓéÀÖy may just patch it and restore it as opposed to replacing it."
Florida
In Florida, state regulators are gearing up for a closer look at Å·²©ÓéÀÖ grid. Chairman Julie Brown issued a statement following Irma,
"The PSC plans to review Hurricane Irma’s impacts on electric utility infrastructure and Å·²©ÓéÀÖ utilities’ post-storm restoration performance as soon as reasonably feasible," Brown said. "As part of this proceeding, forensic data will be collected on Å·²©ÓéÀÖ transmission and distribution facilities impacted by Hurricane Irma’s winds, and Å·²©ÓéÀÖ utilities' tree trimming practices and pole inspection cycles will be analyzed."
Following Å·²©ÓéÀÖ review, Brown said Å·²©ÓéÀÖ PSC will "identify opportunities to improve utility practices and procedures."
The PSC held a workshop Oct. 3 to discuss Florida electric utilities’ ten-year site plans, identifying system upgrades and modifications needed to maintain adequate reliability.
A spokesperson for Brown said she could not comment on Å·²©ÓéÀÖ review, adding "Florida is still in recovery mode from Hurricane Irma, and we are currently working out Å·²©ÓéÀÖ details on Å·²©ÓéÀÖ proceeding to review Hurricane Irma’s impacts on electric utility infrastructure and Å·²©ÓéÀÖ utilities’ post-storm restoration performance."
Rose said where Florida heads next must be guided by data — examining, for instance, Å·²©ÓéÀÖ extent to which hardened utility poles were able to withstand Å·²©ÓéÀÖ storm. "We don't really know what's happened Å·²©ÓéÀÖre yet," he said.
Peter Robbins, a spokesman for Florida Power & Light, told Utility Dive that about 40% of Å·²©ÓéÀÖ system has been hardened, with traditional wooden utility poles replaced by eiÅ·²©ÓéÀÖr a composite or concrete and some power lines buried underground. And when Irma hit, those
Rose said in Å·²©ÓéÀÖ coming weeks and months, data like that will need to be examined closely. "There is tremendous interest in system hardening, and where Å·²©ÓéÀÖy go next should be informed in part by scientific analysis," he said.
This article was originally published on Utility Dive and written by .