Large rolls of black tubing sat like super-sized balls of yarn next to the playground outside Weller Elementary School Wednesday. The sun shined brightly on the south-facing hillside, where a bulldozer carved out a 12-foot hole.

The balls, which are actually polyethylene ground loops, were then rolled out and buried in the ditch, where they will harvest heat from underground to use in the school during the winter. In the summer, six solar thermal panels soon to be mounted on the school will replenish heat to the earth through the same tubes. The system will not only reap savings on heat for the school district but also will test a technology that is young in Fairbanks.

“I would like to see a system that would work well in the Interior and that the public can utilize and save dollars,” said Larry Morris, projects manager for the Fairbanks North Star Borough School District.

The project is an experiment to see how well the systems work in tandem and to collect data on ground source heat pumps, which are common in the Lower 48 but rare in Fairbanks.

“What we’re trying to do here is pair that system with a solar system that will recharge the heat you take out of the ground. In warmer climates, the sun can recharge how much you take out,” said Aaron Sirois, an engineer for PDC Engineering. “We were trying to come up with a solution that’s kind of adapted to Fairbanks.”

The federal government is giving Alaska $700,000 to take steps to improve energy efficiency in the state by 2020.

The U.S. Department of Energy funding is intended to go toward efforts such as expanding current energy efficiency programs and outreach and creating necessary policy to lead to a 15-percent improvement in efficiency over the next decade.

The department says this is part of nearly $30 million going to 12 states and territories.

Mention “new lighting technology” and what leaps to mind is probably a compact fluorescent curlicue. Shaped like a soft ice cream cone, it is viewed as a replacement for the ubiquitous 60-watt incandescent light bulb, which looks almost like it did 90 years ago.

But a profusion of light-emitting-diode lamps is about to hit the market, many of them in applications that are awkward or impossible for compact fluorescents.

LED’s are still mostly specialty items sold on the Web. But by the end of this month, the 2,200 Home Depot stores around the United States will stock seven types, including two substitutes for the classic incandescent bulb, one of which my colleague Leslie Kaufman reported on recently.

But those are “not the most compelling use” of LED technology, according to Zachary S. Gibler, chief executive of the Lighting Science Group Corporation, which makes the lamps that Home Depot will stock. Replacing a standard 60-watt bulb, an LED will produce roughly the same amount of light per watt of electricity as a compact fluorescent; its only advantages, he said, is that it is fully dimmable and lasts a lot longer.

Another product his company is marketing is something most consumers can identify, but not name: a round lamp with a face about the size of a silver dollar, with a base consisting of two metal pins, often used for accent lighting in kitchens or retail stores. Called an MR16, it is almost always halogen, which is only slightly more efficient than a standard incandescent. It is much too small to allow for a fluorescent version.

But Lighting Science is selling an LED version. Installed over my kitchen sink, it casts a much whiter light than the yellowish halogen it replaced. It can take a bit of getting used to, but vegetables in the sink seem truer in its light. A 6-watt version can replace a 35-watt halogen, which is a consideration if it’s the light you leave on all night.

Continue reading: LED Lamps Go Where Compact Fluorescents Cannot

Last week as part of Vice President Biden’s announcement of 200,000 homes weatherized under the Recovery act, we asked you to send us your questions and comments about the weatherization process. Today, we’re following up with answers experts from the Department’s Weatherization and Intergovernmental Program:

1) From edmooney via Twitter: @Energy Besides caulking, what are the best values in weatherization for the Northeast region. #weatherization

Nationwide, the energy-efficient retrofits that consistently provide the best return on investment involve sealing gaps in the building envelope which allows conditioned air – either heated or cooled – to escape the interior of the home. States in the Northeast region, which on average have an exceptionally high number of heating degree days each season, are particularly susceptible to energy loss through poor air sealing of the building envelope.

These gaps in the building envelope can include joints between materials, gaps around doors and windows, and penetrations for piping, wiring, and ducts. A blower door test can be used identify these gaps and measure the aggregate degree of air infiltration into your home. Retrofit measures such as caulking, weather stripping, gaskets, and duct sealing can be used to seal these gaps and improve the energy efficiency of your home.

Continue reading: Response to Weatherization Questions

The success of an innovative new home in Anaktuvuk Pass – which uses a wind power, solar panels and design features of traditional Nunamiut sod housing – is changing the way houses will be designed and built on the North Slope.

“This is a huge leap forward – I hope it has tremendous impact,” said Daryl Kooley, of the Tagiugmiullu Nunamiullu Housing Authority.

The house used just 87 gallons of heating fuel from November to June. Other homes typically use about 100 gallons of fuel per month.

It also cost a lot less to build – just $220,000, compared to a normal three-bedroom home in Anaktuvuk Pass, which runs upwards of $570,000.

The house was the prototype in an effort to find ways of building better, more cost-effective houses in rural Alaska, which “grew out of the fact that estimates for new housing were so extraordinary,” Kooley said. A modest, three-bedroom home in Nuiqsut constructed in the usual way, for example, can cost over $1 million to build.

That is a real problem in North Slope villages, which suffer over-crowded, crumbling homes in desperate need of replacement. To find a solution, TNHA teamed up with the Cold Climate Housing Research Center, a nonprofit that works on developing housing designs for the circumpolar north.

“We are going to have diminishing financial resources for building in rural Alaska given the economic reality of the U.S. So how can we together address the high cost of housing? We can do that together so the future is a little brighter for these communities,” said CCHRC president and CEO Jack Hebert.

The Anaktuvuk Pass prototype house was the first structure built as part of CCHRC’s Sustainable Northern Communities project, a program begun in 2008 to engineer housing solutions for rural northern communities.

Continue reading: Taking the chill out of Arctic Homes

When it comes to saving energy, many Americans seem to get it — and at the same time they don’t get it at all.

That’s the takeaway from a new study by researchers from Columbia University, Ohio State University and Carnegie Mellon University who found that people are far more likely to focus on switching off lights or unplugging appliances than on buying new bulbs or more efficient refrigerators. But people’s perceptions of the relative savings of various actions are significantly at variance with reality.

“Participants estimated that line-drying clothes saves more energy than changing the washer’s settings (the reverse is true) and estimated that a central air-conditioner uses only 1.3 times the energy of a room air-conditioner (in fact, it uses 3.5 times as much),” the researchers wrote.

Continue reading: Delusions Abound on Energy Savings, Study Says

The recession is lingering, and so is the unspent stimulus money that was meant to help end it.

The latest example is the $3.2 billion that Congress voted in February 2009 as part of an economic stimulus package to simultaneously provide jobs and improve energy efficiency through block grants to states and cities.

Only about 8.4 percent of the money had been spent by the beginning of this month, according to an audit released on Friday by the inspector general of the Energy Department, and it has produced or saved only about 2,300 jobs as of the second quarter of this year.

The program was to provide money for the purchase of better lighting or heating and cooling equipment for buildings like city halls and schools. But it is off to the same slow start as a bigger program that was initiated at the same time to weatherize the homes of low-income people around the country. An audit of that program in February, also by the  inspector general, found that only $368.2 million of $4.73 billion, or less than 8 percent, had been spent.

Continue reading: Energy Funds Went Unspent, U.S. Auditor Says

BY CCHRC STAFF

The “Ask a Builder” series is dedicated to answering some of the many questions Fairbanks residents have about building, energy and the many other parts of home life.

Q: Many people are fixing their old home and getting a rebate from the state. Is there still rebate money available for building a new home?

The statesponsored Energy Rebate Program for new construction is still active, although continuous longterm funding is uncertain. Any homeowner who builds a home that meets the Alaska Housing Finance Corporation (AHFC) 5Star Plus energy standards is eligible for a $7,500 rebate, however there are some important details that determine who qualifies and a specific process that must be followed.

The program operates from a statewide waiting list on a firstcome, firstserved basis. So the sooner you sign up, the better your chances are for benefiting from the program. The first step is to get on the waiting list. Locally, the staff of CCHRC’s Portal on Retrofits Training and Loans (PORTAL) can guide you every step of the way.

Call 455HEAT (4-328) or contact the AK Rebate Call Center tollfree at1-877AKREBATE (1-877-257-3-228). Once your name reaches the top of the list, AHFC sends out two forms: “5 Star Plus New Construction Energy Rebate Encumbrance Request” and the “5 Star Plus New Construction Energy Rebate Form.” As an ownerbuilder, when you submit the completed forms, you must also include a copy of an energy rating taken from the building plans that validates that the home will meet 5 Star Plus standards, which can be found on the AHFC website: www. ahfc. state.

ak. us. Once AHFC receives and approves the forms, $7,500 is set aside for one year during which the house must be completed.

There are several criteria to meet to be eligible for the program.

Only the original owner qualifies for the rebate, and the home must serve as the primary residence.

If the home is purchased from a builder, it cannot be more than one year old at the time of the first sale. Ownerbuilders can qualify too, however the home cannot be occupied for more than one year from the date of completion.

To qualify if you are an ownerbuilder , you will have to submit the right forms to the state once the home has been completed. These forms include the “Building Energy Efficiency Standard Certification (BEES),” which certifies that the home was built to meet the 5 star Plus thermal and ventilation standards. The form can be signed by a certified home inspector , engineer , energy rater , architect, or the builder if he/ she is approved to certify and has met the current BEES training and testing requirements.

A “Summary of Building Inspection” form must also be submitted, which validates that the home was built in compliance with local building codes. This form must be signed by a statecertified building inspector who has conducted all the inspections during the construction process, starting with the building’s footings. For this reason, it is important to begin the rebate process and hire an inspector before breaking ground on the home. Finally , the finished home must also have an energy audit.

These three forms must be completed, signed by the appropriate authorities, and submitted to AHFC with the reimbursement form. Although this process may sound complicated, the new home construction rebate is a great opportunity for an ownerbuilder or new homebuyer to offset a significant portion of the construction costs, and ultimately enjoy the long term financial and environmental benefits of building an energy efficient home.

Alaska HomeWise articles promote home awareness for the Cold Climate Housing Research Center (CCHRC). If you have a question, email us at akhomewise@cchrc.org.You can also call the CCHRC at (9-07) 457-3-454.

When you think of sustainable dining, you probably don’t think of fast-food restaurants like Subway, Starbucks and Chipotle. And yet, these fast food chains are some of the few who have successfully pursued LEED certification.

LEED stands for Leadership in Energy and Environmental Design and is an internationally recognized third-party certification that a building meets high standards for energy savings, water efficiency, emissions reduction and improved environmental quality.

So far, only 38 restaurants have received LEED certification — and a shocking 40 percent of those are chain restaurants. For many of these large chain organizations, LEED certification is a relatively cost efficient way for not particularly green companies to flex their corporate social responsibility muscles.

One surprise on the list: sandwich chain Subway currently has one LEED certified restaurant in Chapel Hill, NC. “We believe that building stores in an environmentally responsible way is a good business practice,” says Subway’s public relations specialist Les Winograd.

Read on for more LEED-certified fast food chains — as well as some independent restaurants that are taking the LEED leap.

Continue reading: 9 Surprising LEED-Certified Restaurants

Thanks to clever marketers, if I said I had a problem with ED, you might immediately have an idea what I’m talking about. But I have a problem with EE. It’s no cause for embarrassment — EE is a great thing. EE can save you money, create jobs, help protect our environment and safeguard our children’s future. Unfortunately, many people just don’t find EE that exciting.

EE is energy efficiency, and if you’re a building or business owner you needed EE yesterday. It’s the cheapest way to boost your profit margin, and in these tough times who doesn’t want that?

Oil spewing in the Gulf presents yet another reminder of our unsustainable addiction to fossil fuels, amplifying calls to move toward “clean” energy systems. Energy costs in Alaska can stifle economic development, especially in rural areas. Renewable energy generation — wind, solar, hydro, geothermal — is crucial to Alaska’s clean energy future, and this is what most people think of first when looking for truly sustainable energy solutions.

Continue reading: Perhaps energy efficiency needs sex appeal