All Blog Posts (1,353)

Charging Stations for Electric Cars: Forming the future

As charging stations for electric cars become more widespread so will the use of electric vehicles. But the future is not based solely on building these charging stations for electric cars, rather on the advanced technology employed in them.

Smart charging for millions of cars

Charging stations for electric cars offer multiple charging possibilities to vehicles throughout the whole day. In many charging stations for electric cars today you simply plug in and begin to…

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Added by James E. Ragland on October 23, 2010 at 3:30am — No Comments

Efficiency Lives -- The Rebound Effect Not So Much

While the following discussion (originally published in Climate Progress) extends to energy opportunities well outside the residential sphere, it's the latest example an overstatement of the so-called "Rebound Effect". Although there are certainly times that a portion of the…

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Added by Evan Mills on October 22, 2010 at 11:30am — 2 Comments

Window Shade Study Shows Positive Results

(This is from Robb Aldrich of Steven Winter Associates.)



It’s no secret that windows are a liability when it comes to heat loss in homes. Conductance of quality insulated, low-e windows is typically 0.30-0.35 Btu/ft2hr°F, or about R-3. If installed in a wall that performs at R-20, heat lost through windows is 6-7 times higher (per unit area) than heat loss through the rest of the wall.…

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Added by Jim Gunshinan on October 20, 2010 at 12:52pm — No Comments

Home Performance Business—Getting In the Door



There is a hot and heavy dialogue taking place in an online group that I belong to, made up mostly of people who are in the business of auditing homes and then making homes more energy efficient, healthy, and comfortable. The main gist of the discussion is, Do we rely on the government to encourage people to make their homes more efficient, or is it up to the market? Does this sound familiar? Tune into any election debate in the…

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Added by Jim Gunshinan on October 19, 2010 at 12:56pm — No Comments

The Seattle Permaculture Convergence, 2010

Wikipedia’s definition of permaculture works. It’s a fancy word to describe biology, but complex enough that there are certification systems for it all over the world, workshops, and events such as the Northwest Permaculture Convergence, which was in Seattle Washington over the weekend of September 15 and 16. Three hundred people… Continue

Added by Leslie Jackson on October 13, 2010 at 9:45am — 1 Comment

Across the Green Home Spectrum

Two weeks ago I was in Charleston, South Carolina for a meeting of the National Association of State Community Services Programs (NASCSP). Last week I stopped by West Coast Green taking place at Fort Mason Center in San Francisco. NASCSP is a group of state managers for the Department of Energy’s Weatherization Assistance Program (WAP) for low-income families. West Coast Green is an interactive conference focusing on innovation for the built environment. From crawlspaces to sheep’s wool… Continue

Added by Jim Gunshinan on October 5, 2010 at 11:30am — No Comments

Welcome to Home Energy Pros!

Welcome to Home Energy Pros – the unique digital community by and for those who work in the home energy performance arena.



It is no secret that we are on the cusp of a major transformation in how energy efficiency is deployed in the housing sector. After all, the U.S. President even went on television in a major…
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Added by Evan Mills on October 4, 2010 at 5:00am — 4 Comments

ERVs Get The Yellow Flag



As we make homes tighter, we need to provide ventilation, which costs energy. One way to reduce the energy impact of that ventilation is to use an air-to-air heat recovery system. A heat recovery ventilator (HRV) recovers sensible heat by exchanging heat between incoming and outgoing airstreams. An energy recovery ventilator (ERV) is similar to an HRV but also allows moisture to be exchanged.…

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Added by Home Energy Magazine on September 1, 2010 at 11:00am — No Comments

A Cottage Industry with High Electricity Use

Can growing marijuana change the way homes use electricity? In rural Humboldt County, in far-northern California, there’s no doubt that it can. Figure 1 tracks average monthly residential electricity use in Humboldt County and in California. Until the mid-1990s, these two values were almost identical. But after 1996, Humboldt County’s electricity use suddenly turned upward. What happened? In 1996, California voters passed Proposition 215, which legalized the medical use of marijuana. In… Continue

Added by Home Energy Magazine on July 1, 2010 at 4:30pm — No Comments

Targeting the High Users

Homes with high energy consumption are likely to provide us more opportunities to save energy. If that’s true, then why don’t we see more programs and businesses geared toward the high users?



Regulatory authorities discourage utilities from creating programs targeting the high users. It is politically unpopular for utility programs funded by ratepayers to support the wealthy. High users, the logic goes, are probably wealthy and therefore able to save energy…
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Added by Home Energy Magazine on May 1, 2010 at 4:30pm — No Comments

Home Energy Monitors

Home Energy Monitors, that is, devices that display a home’s energy consumption have been touted as Silicon Valley’s contribution to the national energy conservation effort. A Home Energy Monitor (or HEM) constantly informs the occupants of their home’s electricity and gas consumption, along with conversions to monthly costs and comparisons with previous periods. Some models can (or will) communicate with heating and air conditioning systems. These devices will…

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Added by Home Energy Magazine on March 1, 2010 at 2:00pm — No Comments

LEDs: Avoiding the CFL Debacle

The lighting efficacies of LEDs have been rising steadily and are poised to overtake CFLs. Fluorescents and CFLs still outshine LEDs with respect to general applications and cost of light, but LEDs are already superior for some niche applications and offer many new exciting illumination opportunities. Now we need to ensure that the reputation of this new energysaving lighting source won’t be undermined by a tidal wave of shoddy products. Tests for quality, efficiency, and durability of LEDs… Continue

Added by Home Energy Magazine on January 1, 2010 at 2:00pm — 1 Comment

Say Good Bye to Toxic Emission with Rooftop Solar Panel Installation

In a machine-driven, machine dependent world, power is the basic need. Power outage can bring all the activities to a grinding halt. Solar energy can provide a solid power boost to the bustling cities like Tampa, while helping the households and commercial establishments to reduce their carbon footprints.…

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Added by Olivia Taylor on November 30, 1999 at 12:00pm — No Comments

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