Tag Archives: efficiency

Help put Boulder’s Climate Smart Loan Program back on track

In the summer of 2010, Boulder’s innovative Climate Smart Loan Program screeched to a halt, because the Federal Housing Finance Agency (FHFA) decided that the property assessed clean energy (PACE) financing mechanism amounted to a lien on any property enrolled … Continue reading

Posted in journal | Tagged , , , , , , , , | Leave a comment

PACE Lives!

The Federal Housing Finance Administration is taking public comments on Property Assessed Clean Energy financing programs, at the insistence of California’s 9th Circuit court of appeals.  Here’s what I told them: Property Assessed Clean Energy financing programs, as have been … Continue reading

Posted in linkstream | Tagged , , , , , , , , | Leave a comment

Location Efficiency and Housing Type

According to this EPA study, regardless of the type of housing, living in an area with good transit access saves more energy than building a “green home”. Of course, living in a mixed use, transit accessible apartment that’s also energy … Continue reading

Posted in linkstream | Tagged , , , , , , , , , , | 2 Comments

Construction of a Canadian PassivHaus

A great slideshow with captions showing the construction of a PassivHaus in Ottawa.  Relatively high density, and relatively high end.  I’d love to build something along these lines… and live in it.

Posted in linkstream | Tagged , , , , , , , , , | Leave a comment

Energy Efficiency and Economics at Walnut Mews

Our condo HOA had a meeting last fall, and somebody brought up selling the flat plate collectors on the roof that are part of our defunct solar thermal hot water system.  The 750 gallon cylindrical storage tank rusted out in … Continue reading

Posted in journal | Tagged , , , , , , , , , , , , | 8 Comments

The (HVAC) Elephant in the Room

A look at the difficulties of getting good HVAC design in high performance homes.  Most HVAC professionals are not familiar with the design requirements of very energy efficient homes with tight envelopes.  Most rules of thumb and the very basic … Continue reading

Posted in linkstream | Tagged , , , , , | Leave a comment

Retrofits pick up the pace

A look at the current state of Property Assessed Clean Energy (PACE) financing across the US.  Legislation enabling this financing mechanism has been passed in half the country, and implemented at the city or county level in Berkeley and Boulder … Continue reading

Posted in linkstream | Tagged , , , , , | Leave a comment

German Passive House building robots

A short video from German home fabricator Hanse House.  They do both stock and custom homes, but both are fabricated off-site.  The video shows their production facility, and some of the techniques for putting together a building in pieces.  It’s … Continue reading

Posted in journal | Tagged , , , , , , , , , , , , | Leave a comment

A life cycle analysis of incandescent, CFL and LED light bulbs

Life cycle analysis of incandescent, CFL, and LED light bulbs – It’s important to make sure when you’re using a new technology that supposedly saves energy, that you haven’t just shifted the energy consumption from the operational to the manufacturing … Continue reading

Posted in linkstream | Tagged , , , , , , , , , , | 1 Comment

Boulder’s Passive Aggressive Building Standards

Usually when people say that “better is the enemy of good enough”, they’re pointing out that striving for perfection can be a distraction from just getting the job at hand done.  There are other dynamics that involve these concepts too.  … Continue reading

Posted in journal | Tagged , , , , , , , , , , | Leave a comment