http://www.kansascity.com/news/local/article197241499.html

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The post Small Houses For Vets – Why not small houses for all the homeless appeared first on Community Energy Systems.

http://www.latimes.com/business/la-fi-solar-panels-20180509-story.html

Go there and do a happy dance – I mean read. More next week

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The post California Demands Solar In New Housing – Only 49 to go appeared first on Community Energy Systems.

Ryan Tollefsen REALTOR®
Unity Home Group at Keller Williams Realty Alaska Group
101 W. Benson Blvd. Suite 101
Anchorage, AK 99503

Check out my all new Great Alaskan Getaway Guide

http://www.constructiondive.com/news/more-buyers-want-green-homes-real-estate-agents-say/439944/

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Go to the web links and read. More next week.

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The post Home Energy Efficiency – From a Realtor’s perspective appeared first on Community Energy Systems.

https://www.greentechmedia.com/articles/read/the-real-problem-with-energy-efficiency

We’re Doing Residential Energy Efficiency All Wrong

Utilities are now spending nearly $7 billion a year on energy-efficiency programs. It seems we have little to show for it aside from expensive consultants who will model any results you would like.

These programs tend to focus their marketing on the energy savings or money savings from the projects. Consumers don’t care. If they did, we would see geometric growth instead of a resounding “meh.”

Others focus on better financing products, slicker sales pitches, faster energy audits, higher rebates or any of a myriad of other things.

In the residential sector, none of these are the problem. The lack of sales is the problem.

Projects are not being sold and implemented in substantial numbers. We need to slow it down, build relationships with consumers and educate them, learn and think systemically about the problems they have, and arrive at solutions that fit homeowner budgets.

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Go there and read alot. It is a long article. More next week.

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The post A Comprehensive Approach To Energy Efficiency – Doing less with more appeared first on Community Energy Systems.

http://www.eia.gov/todayinenergy/detail.cfm?id=10271

March 7, 2013

Heating and cooling no longer majority of U.S. home energy use

For decades, space heating and cooling (space conditioning) accounted for more than half of all residential energy consumption. Estimates from the most recent Residential Energy Consumption Survey (RECS), collected in 2010 and 2011 and released in 2011 and 2012, show that 48% of energy consumption in U.S. homes in 2009 was for heating and cooling, down from 58% in 1993. Factors underpinning this trend are increased adoption of more efficient equipment, better insulation, more efficient windows, and population shifts to warmer climates. The shift in how energy is consumed in homes has occurred even as per-household energy consumption has steadily declined.

While energy used for space conditioning has declined, energy consumption for appliances and electronics continues to rise. Although some appliances that are subject to federal efficiency standards, such as refrigerators and clothes washers, have become more efficient, the increased number of devices that consume energy in homes has offset these efficiency gains. Non-weather related energy use for appliances, electronics, water heating, and lighting now accounts for 52% of total consumption, up from 42% in 1993. The majority of devices in the fastest growing category of residential end-uses are powered by electricity, increasing the total amount of primary energy needed to meet residential electricity demand. As described in yesterday’s Today in Energy, increased electricity use has a disproportionate effect on the amount of total primary energy required to support site-level energy use.

Other notable trends in household energy consumption include:

• The average U.S. household consumed 11,320 kilowatthours (kWh) of electricity in 2009, of which the largest portion (7,526 kWh) was for appliances, electronics, lighting, and miscellaneous uses.
• On average, residents living in homes constructed in the 1980s consumed 77 million Btu of total energy at home. By comparison, those living in newer homes, built from 2000 to 2009, consumed 92 million Btu per household, which is 19% more.
• Space heating accounted for 63% of natural gas consumed in U.S. homes in 2009; the remaining 37% was for water heating, cooking, and miscellaneous uses.

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Go there and read. More next week.

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The post Home Energy Use Has Shifted – Appliances now take more juice appeared first on Community Energy Systems.

http://www.greentechmedia.com/articles/read/a-peak-at-solarcitys-new-energy-efficiency-software?

Has SolarCity Created the Amazon 1-Click for Energy Efficiency?

“We believe SolarCity has the best database of residential energy use of anyone in the world.”

Stephen Lacey: June 28, 2013

After SolarCity shifted its energy efficiency strategy and pulled back from doing residential retrofits in-house, the solar services behemoth is moving straight into intelligent efficiency.

GTM’s Eric Wesoff recently reported on SolarCity’s evolving business plan and the resulting changes that company executives say will scale residential efficiency in the same way solar services have scaled residential solar.

But solar is very different from efficiency. For the most part, solar is very standardized and installations are uniform from home to home. Efficiency retrofits encompass an extraordinarily broad category of activities and skills. Incentives are also quite different for efficiency, making it more complicated from a financial perspective. That’s why only a handful of U.S. solar contractors have offered efficiency as an in-house service.

SolarCity decided that doing the retrofit work itself was not the best way to scale. Instead, it has turned from manpower to the power of big data.

The secret sauce is a “simulation engine” that shows homeowners exactly how much they’re spending on energy everywhere in their house. The initial database was created using information from 16,000 home energy audits performed over the last five years. It relies on an algorithm developed at the Department of Energy that crunches 100 million calculations per home for each individual energy efficiency audit (which is still performed by SolarCity when installing solar).

“The simulation software looks at every component in a home in relation to one another,” said SolarCity COO Peter Rive. “Every ten minutes, it thinks about what one thing is doing and about its effect on the rest of the systems within the home.”

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Go there and read. More next week.

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The post Should SolarCity Change Its Name – Changing their name to EfficiencyCity appeared first on Community Energy Systems.

http://www.homeenergy.org/show/article/id/1811/viewFull/

Nevada Energy Star Partners Demonstrate Peak Performance (Web Only)

Las Vegas may appear balmy and inviting with its sparkling pools and swaying palm trees, but those who live in Neon City know the truth: It’s too cold in the winter and too hot in the summer.

Unfortunately, hundreds of thousands of homes that were built during an amazing 50 years of rapid growth in the Southwest do not incorporate modern advances in energy performance to accommodate the wild swings of desert climate. As temperatures climb to 110°F in the summer, many homes leak large amounts of cooled air through gaps in ducts, roofs, windows, and doors. And when the frigid north wind drops the temperature below freezing in the winter, heated air escapes, leaving living rooms and bedrooms uncomfortably cold and drafty. While Las Vegans know their climate, they may not realize that they are paying to heat and cool the great outdoors.

The dramatic temperature shifts in the high-desert climate make Las Vegas an ideal place for homeowners who are looking to make their homes more comfortable and to save substantially on their energy bills. Funded in part by DOE’s Building America program, the Building America Retrofit Alliance is working with the Nevada ENERGY STAR Partners–Green Alliance (NESP–Green Alliance), and with Better Building Performance, a Las Vegas company, to upgrade two typical homes top to bottom. Their goal has been to show homeowners and remodelers how easy and effective energy performance upgrades can be.

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Go there and read. More Tomorrow.

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The post Las Vegas has made huge strides in conservation efforts appeared first on Community Energy Systems.

http://www.greenhomesamerica.com/

One Call… We Do It All!

• Comprehensive Home Assessments
• Heating & Cooling
• Attic & Wall Insulation
• Windows & Doors
• Solar
• Duct Repair

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More next week.

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The post Residential Energy Services – The Green Home way appeared first on Community Energy Systems.

http://www.hgtvpro.com/hpro/green_building/article/0,3142,HPRO_27916_6024083,00.html

Five Models of Energy Efficiency: A Guide to Beautiful, Energy-Efficient Homes

Five US builders are being honored for their exceptional achievements in high performance building at the second annual BASF Builders Challenge Awards.

Led by the U.S Department of Energy (DOE), the Builders Challenge is working with homebuilders across America to build a new generation of high-performance homes, working toward the ultimate goal of providing cost-effective, net-zero energy homes by 2030 for all Americans.

To qualify for the Builders Challenge, homes must meet at least a 70 on the EnergySmart Home Scale (E-Scale) — which means they must use at least 30 percent less energy than a typical new home built to code.

2010 BUILDERS CHALLENGE AWARDEES

Colorado Builder’s Net-Zero-Energy House Costs Just 7% to 8% More Ecofutures Building Inc. developed four certified Builders Challenge homes (two with minus-three HERS ratings). These net-zero-energy measures represented only 7% to 8% of the total building cost. See how they did it so cost-effectively >>

Treating the Home as a Whole System By treating houses as a complete system, David Weekley Homes qualified 280 homes for the Builders Challenge with HERS scores averaging 67. The homes ranged from 1,500 to 5,500 square feet. Get better results by treating the house as a whole system >>

College Students’ Habitat for Humanity Home Yavapai College students built a Habitat for Humanity house that achieved the remarkably low HERS score of minus-three. Their 1,207-square-foot home cost only $92 per sq. ft. cost to build. Learn how the students got it done >>

Homebuilder Adds Net Zero Energy Upgrade Package Artistic Homes of Albuquerque offers a net-zero-energy upgrade option on all their homes. They’ve completed and sold 11 true net-zero-energy homes ranging from 1,305 to 2,905 square feet and costing between $160,000 and $300,000. Find out about the upgrade option >>

Builder Promises Zero Energy Bill for Five Years Tim O’Brien, a fanatic about eliminating air infiltration, actually got $400 back from the utility the first month after construction was finished. He guarantees a zero energy cost for the first 5 years on his home. See what makes this builder so confident >>

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More next week.

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The post Beautiful Energy Efficiency – Most housing designs include solar appeared first on Community Energy Systems.

http://envirowriters.wordpress.com/2011/04/18/proposal-essay-less-wasted-light-equals-more-energy-savings/

Proposal Essay: Less wasted light equals more energy savings

The UAF campus uses electricity.  Some of the electricity is used to power fluorescent light bulbs which are much more efficient than incandescent bulbs but because they exist as a load in the power grid, use energy.  How much energy is being used by these lights, is it more than is necessary, and how bright to classrooms and computer labs need to be?  In 2010, UAF created its Office of Sustainability to utilize the $20 per student fee towards sustainable projects.  The goal is to supply the necessary funds to make sustainable projects happen but the projects must be cost effective with realistic financial return periods.  Although bright rooms are convenient, the UAF sustainability club should lobby the Chancellor and Facilities Services to implement a program that systematically removes bulbs from over-lit rooms because it will reduce the energy use of the UAF campus, make indoor conditions more comfortable, and save money.

The simplest way to reduce the energy use for lighting is to remove unnecessary bulbs.  Before someone begins pulling random lights from their fixtures at will, some simple calculations can be done to get “back of the envelope” numbers for a cost-benefit analysis.  The following calculations will use some simple energy units, the kilo-Watt (kW) and the kilo-Watt-hour (kWh).  A kW is a measurement of Power and is defined as 1,000 joules per second, how quickly work is being done.  A kWh is a measurement of energy, a fairly large amount of energy at that, being the amount of work by a one kW source for one hour.  Electricity is sold in kWh, because it doesn’t matter how fast someone or something is using the electricity but how much of it they are using.  Light intensity can be measured in lumens or foot-candles.  A lumen is a measure of the power of light perceived by the human eye and the foot-candle can be considered as the amount of light falling on a surface, being defined as one lumen per square foot.

The first thing to be determined is whether or not rooms are over lit.  If they are, then energy is being wasted.  The U.S. Occupational Safety and Health Administration (OSHA), recommends that in an office setting, the light intensity be between 20 and 50 foot-candles (OSHA).  As I write this essay, I am sitting in the Students of Engineering Computer Lab (SOECAL) in Duckering.  The room is quite bright and approximately 20 ft by 40 ft and holds 15 light fixtures, each containing three fluorescent bulbs.  The bulbs are GE Ecolux Starcoat bulbs consuming 32 Watts and producing 2800 lumens a piece (light bulb).  To determine if this particular room is over lit, the following calculation is made:

It appears that the SOECAL lab is over lit by three times the amount of recommended light for a work office, perhaps other similar classrooms and computer labs are as well.  Since we can assume the SOECAL lab and many other rooms are over lit, it can also be determined how much energy is being wasted and how much it is costing.  The following calculations are performed considering a single bulb for a single hour.

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In the room where he is writing no less. More tomorrow.

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The post We Even Waste Light During The Day – That’s right appeared first on Community Energy Systems.