Archive for the ‘Case Studies’ category

Chipotle chain will become the largest solar power producer in industry

October 21st, 2009

Chipotle, already one of my favorite fast food restaurants, has earned more points with me. Is this another sign that Colorado is becoming the model state for renewable, sustainable energy? Chipotle’s headquarters is based in Denver.

From TreeHugger.com we got this:

Here’s one more reason to feel good about heading out to Chipotle for a burrito: The Denver-based Mexican restaurant chain has just announced that is making a big solar power push, partnering with Standard Renewable Energy to install solar panels at approximately 75 of its restaurants over the next year:

20,500 Tons of CO2 Avoided Annually
Installation of the solar panels is currently underway in Denver, Colorado and Austin, Dallas, and San Antonio, Texas. All together, Chipotle says the solar power initiative is expected to avoid some 20,500 tons of CO2 emissions of the life of the project — and that when completed Chipotle can boast being the largest direct producer of solar power in the restaurant industry.

Keep in mind, that’s not all of the restaurants’ electricity usage, but it’s certainly a good start.

Eco-Commitment Extends Beyond Food Sourcing
Touting his restaurants’ green efforts, Chipotle founder and co-CEO Steve Ellis said,

Our effort to change the way people think about and eat fast food began with our commitment to serving food made with ingredients from more sustainable sources. Today we’re following a similar path in the way we design and build restaurants, looking for more environmentally friendly building materials and systems that make our restaurants more efficient.

Regarding the eco-friendly building materials part: Chipotle soon will have three LEED-certified buildings in its chain, one in Illinois (with an on-site wind turbine), one in Long Island, and one in Minneapolis (pending certification).

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Wind-generated energy accounts for 100% of Larkburger’s electricity

October 21st, 2009

larkburger_hamburgerFrom the ElephantJournal blog:

Larkburger, the Vail Valley and Boulder-based quick-gourmet burger restaurant, announced today that wind-power now generates 100% of the electricity needs for its two Colorado restaurant locations.

As of September 1, 2009, the company is offsetting electric energy use through wind-power broker Renewable Choice Energy Inc. of Boulder, Colo., which

“…connects wind-power producers with wind-power consumers.”

Larkburger has purchased 201,000-kilowatt hours of wind-power, to date.

“Larkburger is committed to minimizing its environmental footprint, and using a renewable energy source reinforces this,” said Larkburger President Adam Baker. “From all-natural ingredients to compostable corn cups and containers to reclaimed wood paneling on walls to purchasing wind-power credits, it’s important to us to be as progressive as we can.”

They probably don’t have enough parking lot space to put up their own small wind turbines, but at least they they’re doing everything they can.  Good for them, all of us.

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McGlynn Middle School Northwind 100 turbine web interface

October 9th, 2009

Northern Power Systems offers administrative software to monitor their Northwind 100 Wind Turbine. Here is a website that shows the McGlynn Middle School’s turbine in Medford, MA.

northwind100_interface

A quote from the Northern Power Systems website says it best:

PublicView: Your Community’s Window Into Your Northwind 100 Turbine

The turbine is up and spinning, the ribbon cutting is over, and most of the news camera crews have gone home. But neighbors, residents, and customers are still calling, inquiring, and visiting the newest addition to their town. PublicView is a web-based tool that can provide answers to the questions people may have, such as:

  • How much power is the Northwind 100 producing?
  • How windy is it today?
  • How much energy has the Northwind 100 made to date?

Your turbine will be the center of attention for at least the first few years of operation. Giving your neighbors a window into its operation and impact can encourage long-term support and a sense of community involvement in your wind project.

Good for ‘em!

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Great pics of Northwind 100 turbine going up at Bolton Valley Ski Area

October 9th, 2009

Workers from Alteris Renewables and Northern Power Systems install a rotor assembly on a windmill turbine tower at the top of the Vista Quad lift at the Bolton Valley Resort in Bolton on Thursday October 8, 2009.

Click here to see series of pictures on BurlingtonFreePress.com

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The value of renewable energy credits or make your own

October 8th, 2009

Perhaps it’s more cost effective in the short term for ski areas to buy renewable energy credits rather than set up their own turbines to produce their own green energy for the long term.

The Durango Telegraph reported today, in their “Mountain Exchange” section that Vail Resorts knows how to line up politicians to get good press.

Three years ago, when announcing its purchase of renewable energy credits sufficient to power all of its five ski areas, the company held a press conference and managed to get two of Colorado’s most prominent politicians – a Democrat and a Republican – together. The story and photos ended up on the front page of what were then Denver’s two daily newspapers.The New York Times also gave the story prominent play.

The cost of that commitment for 152,000 megawatts, the second largest corporate purchase in the country at that time, was never revealed. But a conservative estimate of the value of publicity was $800,000.

For this announcement, Katz had the Denver mayor, the Colorado governor, a Congresswoman, a U.S. senator, and one member of President Barack Obama’s cabinet on hand to lend a few comments, mostly laudatory to Vail.

The company has not renewed its purchase of renewable energy credits, but this time will donate 1,500  hours of company labor coupled with a $750,000 donation to the U.S. Forest Service to help restore portions of the 2002 Hayman Fire, which burned across 138,000 acres southwest of Denver.

I’d like to think that the ski industry is beginning to understand the effect of global warming, and the real reasons we need to reduce our carbon footprint. But in the short term, buying credits is laudable if you keep it up. It’s okay to leverage it for publicity.

I think what really deserves respect are the ski areas installing their own wind turbines. They’re reducing our carbon footprint, getting lots of positive recognition, and saving themselves lots of money in the long run. That’s smart.

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Solar heated hot tub!

September 4th, 2009

A solar heated hot tub is great if you also want to install either a domestic
hot water solar system or a solar heating system for your home as it
allows any excess heat to be used. In other words, it’s great if you do it in conjunction with the installation of a Solar Hot Water (SHW) system to capture any excess heat.

Building an SHW just for a hot tub by itself is not cost effective. Also, just heating a hot tub or pool disallows the Federal Tax credit.

Basically involves routing your tub water thru a heat sink. The heat sink uses the excess heat genetated from your SHW after your domestic hot water is satisified.

Heat_sink_hot_tub_solar

So, bottom line, if you’re going to install a SHW system for your home, and you want to capture any unused heat, you might as well route that unused heat through your hot tub. Going green doesn’t necessarily mean sacrifice after all!

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Turbine envy: everybody wants one

September 2nd, 2009
Turbines at Logan International Airport in Boston produced fewer kilowatt hours than anticipated in May and June. -- Jodi Hilton for The New York Times

Turbines at Logan International Airport in Boston produced fewer kilowatt hours than anticipated in May and June. -- Jodi Hilton for The New York Times

Here’s an article in the NY Times about the value of small wind turbines in urban areas. Seems that at the moment their greatest value in the city is as a fashion statement! Small wind turbines are the latest trend according to this chart.

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Are small wind turbines worthy?

September 2nd, 2009

turbine_going_upAn article on NPR’s website (http://bit.ly/2uns1M), Big Dreams For Small Wind Turbines talks about issues regarding small wind turbines, if they are worth while, among other questions. It generated some good discussion in the comments section. Comments range from “they suck” to “no solution is perfect, 50% of something is better than 100% of nothing.”  Seems the general concensus is urban areas tend not to have enough wind, so solar is probably better there. Then again, it depends on where you’re at. I know from experience that the wind blows a lot here in Chaffee County, Colorado!

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Xcel Energy & Black Hills Energy solar rebate programs

September 1st, 2009

I just received a message from Mike Brown of Eco Depot USA outlining two scenerios that take advantage of Xcel Energy and Black Hills Energy PV Solar Rebate programs.

Xcel pays $3.50 a watt for an installed system up to 10 kW (that’s up to $35,000).

Black Hills pays up to $45,000 for a 10 kW system (that’s up to $45,000).

He says a typical home requires a 5 kW system . Installed turn key cost $32,500.

So the Xcel rebate on a 5 kW system would be $17,500. Then there is the Federal tax credit of 30% or net of $4,500.

So the total installed cost of a 5 kW system after rebate and tax credit would be $10,500. The typical payback time for that would be 7-9 years.

Extrapolate that out for Black Hills Energy $4.50 a watt and payback is 5-7 years (32,500 – 22,500 = 10,000 – 30% = 3000.00 = $7,000.00 after rebate and credit).

Here are a couple links to the utility company programs:

Excel Energy solar rebate program

Black Hills Energy solar rebate program

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