Editor’s Note: This article is part of a short series on creating resilient cities, sponsored by Siemens. Please join us for a live Google Hangout with Siemens and Arup on October 1, where we’ll talk about this issue live! RSVP here.
The 9-foot storm surge from Superstorm Sandy, which came on top of a 5-foot high tide, inundated the low-lying areas of the city — wiping out electrical service to substantial portions of the city, and ultimately causing some $50 billion worth of damage. Approximately 800,000 customers lost power in the city, along with millions more along the East Coast. The question posed in a recent toolkit was was: What actions can be taken to reduce the impact of a similar event?
With our climate in upheaval, many cities, organizations and businesses are talking about building resiliency into their operations, in order to allow them to better deal with extreme events such as heavy storms, droughts and floods. While these expenditures are often high, given today’s reality they are considered necessary — in keeping with Ben Franklin’s adage that “an ounce of prevention is worth a pound of cure.”
While taking steps to improve the resiliency of, for example, a city’s electrical grid, won’t prevent the increasing number and intensity of storms from coming (only reducing our carbon emissions can do that), they can prevent the kind of system-wide damage that New York City and its residents suffered in the wake of Superstorm Sandy.
The grid’s 61 substations, 94,000 miles of underground cable and 34,000 miles of overhead cable are susceptible to damage and disruption caused by events ranging from tidal surges, flash floods, blizzards, droughts, high winds and heat waves, all of which are more likely to occur given the onset of global warming. Recommended actions fell into three categories: robustness and redundancy of equipment, keeping the demand from overwhelming supply, and enhanced coordination of resources through smart infrastructure. Click to continue reading »
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