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Showing posts with label LEED. Show all posts
Showing posts with label LEED. Show all posts

Wednesday, September 22, 2010

Does LEED Fulfill It's Promises?

Critics Say:

"LEED certification has never depended on actual energy use, and it's not going to," he says. "You can use as much energy as you want and report it and keep your plaque."


The business of green building is growing rapidly, even though the construction market as a whole has been in a slump. The U.S. Green Building Council, or USGBC, and its certification system are changing the industy! The company is influencing policy, but some critics say it isn't delivering on its environmental promises. Here's one such story.

In Washington, LEED Is Law.


Stoddert Elementary School in Washington, D.C., is the site of a sparkling new building addition and rehab. Last month, crews were still putting the finishing touches on the landscaping and a new glass wall that blends into a beautiful 1932 brick schoolhouse. The school is expected to earn LEED Gold certification for its renovation and new addition.


"Architecture can no longer be just sculpture," says Rick Fedrizzi, head of the USGBC, the private nonprofit that runs the Leadership in Energy and Environmental Design certification system known as LEED. Architecture must be about performance, Fedrizzi says, especially in the case of schools.


"We have the ability through the bricks and mortar to change the way our kids learn, absorb information, interact with their teacher, and ultimately have the ability for a much more productive life," he says. "It's a moral objective of all of us to make sure that this happens across the board."


In Washington, it's more than an objective — it is the law. All new public buildings must achieve LEED certification.

LEED is a force to be reckoned with in the construction world. Fourteen federal departments and agencies, 34 states and more than 200 local governments now encourage or require LEED certification. Some places offer incentives to certify. Others, like Washington, mandate it as a kind of code.

Under LEED, the environmentally conscious features of Stoddert will be tallied up, and the USGBC will award a plaque certifying the school as a green building.

Noise Levels And Air Quality

Architect Mary Rose Rankin of Ehrenkrantz Eckstut & Kuhn says the designers paid a lot of attention to the acoustics of this building because noise levels are important for learning. It's one of the LEED requirements.

Indoor air quality is another priority. Rankin says she expects the school's new geothermal heating and cooling system to save a lot of energy.


"Our model shows a savings of around 29 to 30 percent over what a comparable baseline building would be of similar size," she says. "That's 30 percent a year. And payback, for instance, for our geothermal system should be around six to eight years."

Critics of LEED have long said it doesn't put enough emphasis on saving energy. One of the most assertive is Henry Gifford, a New York apartment building owner turned energy efficiency expert.

"It's impossible to go out and buy a building with a guarantee for how much energy it won't use," he says. "And the LEED system, by basing everything on energy predictions, continues that. This is one of the reasons why it's so popular — because it's painless."

Questioning The LEED Certification

A couple of years ago, Gifford sparked a firestorm by challenging a study funded by the USGBC that concluded that LEED buildings save energy. He says the methodology was flawed and the numbers really show that those LEED buildings used more energy than their peers.

Gifford's bottom line is that LEED awards certification before the energy savings are proved.

Gifford says LEED should have teeth. If the building doesn't perform as predicted, yank the certification. And as for the growing number of governments that require LEED?

At the USGBC's platinum-certified office space in Washington, Fedrizzi walks past the two-story waterfall in the lobby to show off some energy-saving features. Natural light streams in, bouncing off white carpet and ceiling panels to illuminate the workstations. He says the lights are rarely turned on.

"LEED buildings are significantly more energy efficient than your typical building stock," he says.

When asked about Gifford's charges that LEED doesn't live up to projections, Fedrizzi says ultimately it's not just about the design — it's about how the building is run.


"What really needs to happen is the transformation of the owners and the operators of the buildings to ensure that the building is being operated properly," he says. "I like to say you can get the same gas mileage out of a Prius that you get from a Hummer if you drive it incorrectly."


So should there be a system put in place of checks and balances to guarantee that what is being paid for in certification is indeed putting out as it says?  Should LEED be able to be written into law? With small towns and cities headed that way the criticism is sure to come out in heavier doses. 

The most striking thing about the business of LEED is how the system is being woven into the fabric of the building industry. Even in new buildings that are not LEED these days, many use it as a reference in the project specs. Regardless of the economic downturn, despite questions about performance, LEED is capitalizing on the desire for better buildings and pulling the market toward green.



Wednesday, September 15, 2010

Is LEED Really Worth It?

Is LEED Certification really worth it? 

While much of the U.S. real estate market has been floundering, one area has not seen a dip. Green building now accounts for nearly one-third of new construction in the U.S. That's up from 2 percent in 2005, according to McGraw-Hill Construction, which tracks the industry.

The numbers suggest a revolution is taking place within an industry that is historically slow to change. There are many factors — and many players — in this move toward green building.

The University of Michigan officials ran the numbers this year and decided that yes: the intangibles that come from LEED are worth the investment. The university committed to seek certification on all of its new building projects worth more than $10 million. -The cost of LEED certification is a relatively small percentage of the overall cost of a building.




-For a $100 million project of the average building type, the additional cost to reach LEED silver is only about 2 percent.
-LEED silver certification would add 4.7 percent to the cost of that same $100 million project.

Certified buildings get a plaque for prominent display. And if you already know all of this, it's a sign of the brand recognition LEED has developed.

How LEED Works

LEED is set up like an arbiter of a sort of building Olympics. Projects earn points for various features. Use renewable cork flooring, for instance, get a point in the materials and resources category. Use paint that doesn't give off toxic substances — score a point for indoor environmental quality. There are categories for water efficiency and energy. Pay the fees, rack up enough points, and win a basic, silver, gold or platinum rating. The Ross building achieved silver.

The word LEED meant nothing 10 odd years ago. And now that is literally like Kleenex is to tissues. I mean, you think of a LEED building and people think, 'Oh, it's a green building.' "


(www.npr.com)

Monday, August 30, 2010

A Green Seal of Approval for Your Home

Provided your home meets a minimum threshold for energy efficiency, you may be eligible for certification under a range of national and regional energy-efficiency certification programs. Even if you don’t already meet required thresholds, a few inexpensive improvements may be all that stand in your way.

Certification through programs such as ENERGY STAR, the National Association of Home Builders (NAHB) Green Building Program, LEED for Homes and others can show potential buyers that a home promises significant utility cost savings over homes without certification – a major selling point in today’s economy. Certification also helps ensure that homebuyers and sellers alike are making greener choices that reduce overall environmental impact.

Read on to learn more about a range of energy-efficiency certification programs and how to participate.


ENERGY STAR

To qualify for certification under the ENERGY STAR program, a home must meet strict guidelines for energy efficiency as set by the U.S. Environmental Protection Agency. Homes must be at least 15 percent more energy efficient than homes built to the 2004 International Residential Code (IRC), and typically include energy-saving features that make them as much as 20 to 30 percent more efficient than standard homes. Some of these features include effective insulation, high-performance windows, tight construction ducts, efficient heating and cooling equipment and energy-efficient appliances.

According to ENERGY STAR, homes certified through its program use substantially less energy for heating, cooling and water heating, resulting in average savings of $200 to $400 annually. Additional savings on maintenance can also be significant, and ENERGY STAR homes are eligible for financing through energy-efficient mortgages.

The EPA reported in July 2009 that nearly 17 percent of new homes built in 2008 earned the ENERGY STAR label, up from 12 percent in 2007. According to the EPA, American families living in ENERGY STAR homes slashed more than $250 million in annual utility bills in 2008 alone, saving enough energy to avoid greenhouse gas emissions equivalent to those from 29 million cars.

NAHB Green Building Program

The National Association of Home Builders (NAHB) launched the National Green Building Program in February 2008 – an education, verification and certification initiative for builders located anywhere in the United States. For a home to qualify, an independent home energy rater must verify that it adheres to the NAHB Model Green Home Building Guidelines and the ICC 700-2008 National Green Building Standard, which award point values across a range of categories, including lot and site development; resource, energy, and water efficiency, indoor environmental quality and homeowner education.

The NAHB website features an interactive scoring tool that helps homebuilders and homeowners alike guage how a home will score according to the Guidelines and Standard. The scoring tool also provides continual feedback, helping those who use it to understand what steps they can take to make a home more green.

Both single- and multi-family homes, including renovations, are eligible for certification through the NAHB program. To locate an accredited National Green Building Program verifier, use the state-by-state listing on the NAHB website or call the National Green Building Hotline at (877) NAHB-GRN begin_of_the_skype_highlighting (877) NAHB-GRN end_of_the_skype_highlighting.



LEED for Homes

LEED, which stands for Leadership in Energy and Environmental Design, is a rating system created by the U.S. Green Building Council (USGBC) in 1998. LEED ratings measure the overall performance of homes in the following eight areas:

1. Innovation and design process
2. location and linkages
3. Sustainable sites
4. water efficiency
5. Energy and atmosphere
6. Materials and resources
7. Indoor environmental quality
8. Awareness and education.


There are four levels of LEED ratings – certification, silver, gold, and platinum – awarded according to the number of points a home earns in each of the above eight categories.

Participation in the LEED for Homes program requires third-party inspection and verification through LEED for Home Providers and Green Raters. LEED for Home Providers are organizations selected by USGBC to provide certification services in local and regional markets, and Green Raters are individuals who work as part of the Home Providers team to perform field inspections and performance testing. The USGBC maintains an updated list of providers on its website.

New homes, renovated homes, and multi-family homes that meet LEED standards can be marketed and sold as LEED-approved, which can significantly increase their resale value.

(Better Homes & Gardens-Live Green)