Tags » Photovoltaics

Comfort is key in a passive house

Maybe your private fantasies don’t include an attic insulated to R-100, twice what’s required by the building code. Or a motion-activated gizmo that provides immediate hot water when you enter the bathroom so you don’t send thousands of gallons a year down the drain while waiting for it to warm up for a wash or shower. 2,089 more words

Ottawa

duanetilden reblogged this on duanetilden and commented:

[caption id="attachment_3085" align="alignnone" width="300"]0620 home green  Rendering of the home Chris Weissflog, who operates the renewable energy firm Ecogen Energy, is building for his family. Among other green features, its solar panels will meet most of the 3,000-square-foot home‚Äôs heating and cooling needs as well as powering a greenhouse with an extended growing season. With story by Patrick Langston. 0620 home green Rendering of the home Chris Weissflog, who operates the renewable energy firm Ecogen Energy, is building for his family. Among other green features, its solar panels will meet most of the 3,000-square-foot home‚Äôs heating and cooling needs as well as powering a greenhouse with an extended growing season. With story by Patrick Langston.[/caption] >" [...] The falling price of technology may still help us out of the quandary. The CHBA is currently developing a net zero and net zero-ready labelling program for home builders and renovators. A net zero home typically uses photovoltaic panels to produce as much energy as it consumes, generally selling excess electricity to the grid. A net zero-ready home is set up for, but does not include, the photovoltaic system. The CHBA’s Foster says that a net zero home including photovoltaic panels now costs $50,000 to $70,000 more than a conventional home. That’s 50 per cent of the cost of just five years ago, and the price of PV panels continues to drop. With rising energy prices, the CHBA says the extra monthly mortgage costs associated with a net zero home are now comparable to the savings in energy costs, making it net zero in more ways than one. [...]"<

Flawed arguments: A critique of “Upper Limit to Variable Renewable Energy”

My readers will pardon that I am, for the third time in a row, writing a piece inspired by a post by David Roberts of Vox. 2,737 more words

Energy

From 2GreenEnergy Supporter Brian McGowan: Living on Solar PV After the Storm

A large storm came through Tuesday night and we lost power for 43 hours. During that time I ran the house on my little solar PV system and batteries. 76 more words

Photovoltaics

La revolución del autoconsumo de energía solar, en manos de los ciudadanos

Ha sido ampliamente reconocido que la humanidad debe cambiar el sistema energético actual, basado en el consumo de combustibles fósiles, que produce contaminación y el calentamiento global lento pero inexorable. 1,440 more words

Photovoltaics

A Bit of the History of Solar PV Photovoltaics

Robert Benedict, a fellow I met at last year’s Intersolar show in San Francisco writes:

Amazingly solar (photovoltaics) have already passed its golden anniversary (50 years) by the 11th year now or 61 years total. 177 more words

Photovoltaics

How Much Energy Is Needed To Produce Solar Panels?

What’s the carbon footprint of solar panels? Do they need more energy to produce than what they would produce in their entire life?

Readers who aren’t familiar with the website… 17 more words

Photovoltaics

Lots of Good News in the Renewable Energy Space

Here’s a post that’s strictly about the pic I’ve used (left).  It’s a screen shot from the sidebar of GreenTechMedia.com as it exists right this minute (probably won’t last).  49 more words

Photovoltaics