Demand response is a topic that can easily bring a sleepy man to dreamland.
So it was with some trepidation that I attended the New York Academy of Sciences' "Market Makers: Developing and Deploying Energy Efficiency Technology in NYC" event, part of Climate Week.
I was glad I did. Perhaps it's his "down under" accent or comedian's demeanor, but Colin Smart of Con Edison actually made utility scale demand response engaging and, well, almost electrifying.
Con Edison has been promoting green initiatives for some time now, but certain problems impede their progress: dense urban environments are ill-suited to the promise of smart meter technologies, consumer behaviors are hard to change, and there are those pesky window air conditioners.
Yes, window air conditioners. In fact, Smart, Con Ed's section manager for demand response, is more concerned about window air conditioners than the potential impacts of electric vehicles in the future.
"There are 6.1 million window air conditioner units in New York City," Smart told the audience. "That represents 2500 MW, approximately one-fifth of the peak load we have to manage."
Some units are operated as much as 24 hours a day, especially in peak summer months. Others are run throughout the day or overnight. They can't be controlled centrally and, because of their numbers and inefficiency put stress on the grid.
In the future, Smart posits, the adoption rate of window air conditioners will be greater than electric vehicles. The more air conditioners, the greater the impact.
"While I do not know exactly when the electric vehicles will charge, I do not expect them all to charge at the same time," says Smart. "With the air-conditioning units I only need a weather forecast to know exactly when they will be used and they will all operate in a coincidental fashion."
To solve this problem, Con Edison turned to ThinkEco, a New York City based start-up that has developed what it calls the "Modlet."
The Modlet, or "modern outlet" plugs into your existing electricity outlet and helps eliminate energy waste by shutting off your appliances when you're not using them. The unit is programmable by the consumer, who can use it to control energy use on a pre-set schedule or via their computer or smartphone.
"You can see the energy you are consuming and make adjustments." said ThinkEco's chief strategy officer Mei Shibata. "You can even use it to shut off your toaster if you accidentally leave it on."
The device, which was tested by Con Edison with 200 customers on their air conditioning units over the summer, will soon be available to consumers through retail stores.
"People like trying the Modlet on devices they're curious about, which may or may not necessarily correlate with the largest power hogs in the home, but it's their way to personalize what energy consumption means to them," Shibata said. "And that's great because personalized knowledge is what helps to change behavior around efficiency."
Con Ed has also partnered with Viridity Energy and the New York City Economic Development Corporation to optimize advanced building technologies and solar generation from city-owned properties.
Viridity's software platform evaluates the customer’s overall energy load and optimizes energy usage by integrating and aggregating load, storage, and any on-site generation resources, such as ice or solar, into a virtual generation system.
That not only reduces stress on the grid, especially during peak load times, but can help reduce costs for consumers through incentives and reducing the need for costly infrastructure investments that are passed on to the consumer.
The Trouble With Air-Conditioners
Authored by:
Scott Edward Anderson
Scott Edward Anderson is currently global marketing director for cleantech at Ernst & Young. He is the founder of the popular blog, The Green Skeptic, and the VerdeStrategy consultancy. He has held management positions with Ashoka and The Nature Conservancy and is co-founder of the Cleantech Alliance Mid-Atlantic. An award-winning poet, Scott was a John Sawhill Conservation Leadership Fellow, ...
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Thomas Garven says:
Hi Ed:
I guess I should have been more specific in my posting. My roof mounted unit is commonly referred to as a packaged unit. Here is the link to the Carrier site you provided that shows the efficiency for packaged units. They still seem to be stuck at 15 SEER.
http://www.residential.carrier.com/products/packaged/heatpump/index.shtml
By the way, do you know of any way to set the default font size to 10pt? I have to change it every time I post something. You know how us old folks are; blind in one eye and ... :-(
A guest says:
Central AC units with a 20 SEER are available.
http://www.residential.carrier.com/products/acheatpumps/heatpumps/infini...
Federal technology mandates are a major error. Set performance levels and allow the market to respond.
Thomas Garven says:
I have a love and hate relationship with my air conditioning [AC] units. Please let me explain.
Living in the desert Southwest is probably only possible if you have some form of cooling. A swamper or evaporative cooler as they are called and an AC unit. Up until last year my home was cooled using both methods depending on the time of the year. A 3 1/2 ton, 12 SEER roof mounted central AC unit and the swamper is used when the air is dry enough. The 12 SEER unit was the most efficient unit available when it was purchased 10 years ago.
Today the most efficient roof mounted AC unit you can buy is 15 SEER. That means in 10 years, AC efficiencies have only increased about 18% based on efficiency gains of about 6% per each unit of SEER rating increase. If I look at Asia, Japan, China and Europe they have AC units which are typically MUCH MORE energy efficient. In these countries they have AC units called Inverter units that only provide as much cooling as necessary. In the United States Westinghouse [and others] began selling inverter style ground mounted units in about 2008 I guess. However, sales have been slow due to the high cost of these units and the bad mouthing of the technology by the 'good-old-boy' network of existing manufacturers.
I am all for capitalism, growing businesses and job creation. I am also all for reduced energy consumption, greenhouse gas reductions and improved efficiency. BUT, in general, these things do not seem to be important to the average American consumer. Why would the average consumer buy a low efficiency AC unit when for $20 more you can have a higher efficiency model? Of course everyone reading this posting knows why; because its $20 cheaper.
For months before the Federal regulations were passed mandating the sale of AC units with a 13 SEER rating - the manufacturers were screaming to high heavens they can't meet the requirements. Then just a few days after the legislation was passed the industry announced the availability of 15 SEER rated units. What a joke.
I think we should MANDATE that only INVERTER style AC units should be sold in the U.S. Oh my good heavens I can hear the screams now. The units will cost thousands more to manufacturer and the manufacturers will have to spend billions to implement the new technology to which I will respond bull.
Old Spanish customs are hard to break but here are some of the advantages of inverter style AC units.
1. They are more energy efficient and only provide as much cooling as necessary.
2. They are less prone to failure since the compressors are not continuously starting and stopping.
3. They do not have high in-rush currents to start the compressors
4. On medium sized window units [typical 8,000 btu size] an inverter unit can cover the range of cooling from 4000 to about 9,500 btus. This simplifies inventory and manufacturing since fewer models need to be produced.
There is however a DOWNSIDE to inverter style window or ground mounted AC systems since they do COST more. How much can be debated for months. I am of the opinion that the cost differential is insignificant because:
AC units are very simple devices. They basically consist of a compressor, a receiver/dryer, a metering and/or reversing valve for heat pumps, control circuits and a bunch of tubing with fins pressed in place. The only difference between this type of unit and the inverter style unit is the addition of a control module to covert AC electricity to DC and then back to AC at a variably frequency and a different type of compressor. And lets not forget - these new style variable speed compressors are already being manufactured.
So I will bet anyone a good steak dinner that the difference in cost for the addition of a few transistor, a different style compressor, a couple of integrated circuits and a new printed circuit board will cost less than $20.00 when mass produced. That makes the price of the variable capacity 8,000 btu unit at Walmart $169.00 instead of $149.00.
The manufacturers would win since the mass production of almost anything drives down costs and increases profits. The consumer would win since they will be saving significant amounts of energy. The utilities would win since demand strategies might not be needed since inverter style units do not have high in-rush currents.
So can't we please just all get along and stop producing the 13-15 SEER junk we are now making. And remember - if you MUST have that window unit this year, please look for at least a 10.9 EER rating.
Scott Edward Anderson is a consultant, blogger, and media commentator who blogs at The Green Skeptic. More »
Christine Hertzog is a consultant, author, and a professional explainer focused on Smart Grid. More »
Gary Hunt Gary is an Executive-in-Residence at Deloitte Investments with extensive experience in the energy & utility industries. More »
Jesse Jenkins is a graduate student and researcher at MIT with expertise in energy technology, policy, and innovation. More »
Jim Pierobon helps trade associations/NGOs, government agencies and companies communicate about cleaner energy solutions. More »
Geoffrey Styles is Managing Director of GSW Strategy Group, LLC and an award-winning blogger. More »
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