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Smart Grid: Digging The Foundations

Because today's energy efficiency and renewable energy technologies lack connective infrastructure, they provide only first steps toward climate change mitigation.

Quantitatively they only make dents. This applies to building efficiency methods, such as improved lighting and insulation, and transportation efficiency methods such as higher fuel economy standards. The same for onshore wind and concentrated solar thermal, the first (after hydro) competitively-priced renewable technologies. In almost all cases, they lack integration with long distance or even local distribution systems to reach their markets.

These limitations are the main reasons a “smart” electrical grid, empowered by $4.5 billion in federal stimulus funds, is starting to graduate from R&D into products and services.

It's not an easy transition, though, as it surfaces large technology challenges as well as the positions of competing business sectors, technologies, and interests, and the less Machiavellian problems of industries that are working together for the first time. Splashing around now in one pool are the electrical utility, energy feedstock, information technology, building design and management, transportation, and electrical devices and appliances sectors.

With so much taxpayer money involved, President Obama's energy team is mandating up-front standards to ensure that what is built by these disparate forces works and is efficient.

The initial results illustrate the technology and business challenges, but also, a culture of innovation and the experience in business and industrial reinventions of the IT sector.

Driven by these conflicting agendas, and perhaps by IT's preferring to move fast, competing models of the smart grid are emerging. In one, the smart grid grows out from the center, conquering a transmission and distribution infrastructure comprised of 3200 utilities and over fifty regulatory bodies. In the other, it grows in from the edges: that is, from innovations in building energy efficiencies and in newly-emerging “microgrids” that are loosely coupled to the grid.


The National Institute of Standards' Roadmap

In June, the National Institute of Standards (NIST) published an interim report on the Smart Grid Interoperability Roadmap, prepared under contract by the Electric Power Research Institute (EPRI), a utility industry think tank.

The report defines a first dozen of what will eventually be hundreds of standards. It also begins to define the stakeholder groups, their self interests, what they know and don't know about smart grid issues previously outside their interests. In one paragraph, it summarizes the opportunities and the difficulties:

The greatest benefit from the smart grid will be interoperability that will open up every aspect of the generation, distribution, and use of energy to innovation. Innovation will create change, and change will increase diversity. Diversity is always, and always will be, one of the greatest challenges not only to initial integration, but to maintenance management and to operational integrity of the grid.

That is, the grid has thus far been reasonably reliable and safe because it is under centralized control. Yet innovation will distribute energy potential throughout the grid, much as PCs and the Internet distributed information and communications potential to individuals and distributed groups. The management and security challenges in this reinvention are striking. Interoperability refers to the many domain systems (electricity distribution, buildings, electric vehicles, factories, home networks, etc.) being able to work together automatically, effectively, and securely. Interoperability's medium is information technology.

Energy Storage is Key

Nice exposition on the establish players. We can assume that those who benefit from the status quo cannot be relied upon to change it. Our hopes in this area involves some redefinition of the how the power distribution game is played. It would be foolish to imagine that the centralized approach will dissapear anytime soon. But in the quest to make renewables a significant part of the national energy mix, a decentralized approach to power distribution could be an enormous boon. In order for that to happen local energy storage will be key.

I'm talking about game-changing products which give local entities of all sorts, down to individual households, economic incentive to generate their own juice as part of a revamped grid. Nanotech batteries spring to mind, of course, as well as new developments in supercapacitors, and composite material flywheels -- a long neglected tech that's been providing sattelite energy storage for decades now.

You say at one point that "today's grid excludes consumers except as rate payers." That's not quite true. Some utilities will buy back the excess juice their customers produce from photovoltaic or other sources, and I believe some states in fact require them to do so. So there's already some precedence for a grid which can not only dish it out to the provinces, but suck it back up in return. We should be looking to maximize this dynamic.

The greater the extent to which people succeed in producing their own power locally, the better the security of the overall grid will become, not only because the system won't need to strain at the uttermost limits of it's capacity, but because a growing percentage of overall capacity won't be directly dependent on central control. If I'm producing my own juice and a terrorist takes down cybercentral, chances are I'm not going down with it, especially if the new grid has been done right.

The dynamic which should be seeking is the macro equivalent of a hybrid car. Just as a hybrid can can use local battery power as a huge mileage multiplier by repeatedly spurning gasoline to run errands in the hood, so too will a grid richly endowed with local resources be buffered from the sort of wide-area brittleness our current balls-to-the-wall centralization breeds. There an important national security argument to be made here. We can use decentralization to discourage not only catastrophic breakdowns in general, but terrorists who aim to attack infrastructure in the interest of creating catastrophes!

Interoperability, as you note, is key. Seems to me this is an open & shut case of proper governance. We can't tolerate systems which don't play well with each other. As for the IT approach, as a computer geek I'm all for it, and it sound fine in theory. But it seems to me that a note or two of caution is warranted. First, physical INERTIA is a tremendous problem dulling the prospects of the most brilliant theory. Where the smart grid is concerned, much will depend on a new generations of products with the requisite intelligence built in, things like smart refrigerators which can back down their power requirements a bit in the face of a brown out. The theory is fine, but it will be years before such refrigerators are in the field in serious numbers. I also suggest is that we need to ground ourselves in the realization that America is the Saudi Arabia of wasted energy! We're great at coming up with cool ideas about how stuff might work. But what's really pressing right now is to fix what's leaking!

Good balanced summary

The National Institute of Standards and Technology (NIST) is accepting public comments on the interim roadmap. Comments must be received on or before July 30, 2009. Send comments to: smartgridcomments@nist.gov

Distributed generation and distributed storage of energy are critical parts of the Smart Grid vision. Buildings may be both producers and consumers and energy, and intermittent power sources, such as wind and solar, will account for growing shares of the energy supply. Distributed generation will make energy flows on the Smart Grid more complex than today, posing difficult challenges for managing power reliability and quality. Through demand-response and dynamic-pricing mechanisms, owners of commercial and residential buildings will be able to respond to time-based price signals that encourage them to reduce or shift energy usage during peak demand periods, when rates are highest.

These and other Smart Grid capabilities are anticipated to spur innovation in energy-related building technologies.

Smart Grid = Security ?!?

I read with interest up to the point where you equate the concept of a smart grid for electricity with security. At that point, my suspension of disbelief broke.

Computers are by their very nature vulnerable. The classic line is, "There are two types of computers - those that have been compromised, and those that will be". Why should we put something as life-threatening as the electrical distribution network at risk any more than it currently is today? You're talking about centralizing to improve security. What you're also doing is upping the price of any failure of security.

You're also going against the last quote in your article, where Bob Metcalfe said "go distributed". Note that this IMO doesn't modify the risks and challenges, just changes from the 'left hand' set of problems to their mirror image 'right hand' set of problems.

Sincerely,
John B

NIST smart grid security wiki

John B

NIST has a cross-industry security team hard at work, both on the centralized and the distributed components of the smart grid. Their wiki is here:

http://collaborate.nist.gov/twiki-sggrid/bin/view/SmartGrid/CyberSecurit...

Thanks for your comment. Time will tell if you are right.

L.D.

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