Electricity

Spectral Extravaganza: The Ultimate Light

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What do you get when you cross an astronomically-inclined physicist with concerns over energy efficiency in lighting? Spectra. Lots and lots of spectra. In this post, we’ll become familiar with spectral characterization of light, see example spectra of a number of household light sources, and I’ll even throw in some mind-blowing photos. In the process, we’ll evaluate just how efficient lighting could possibly be, along the way understanding something about the physiology of light perception and the definition of the increasingly ubiquitous lighting measure called the lumen. Buckle your physics seat-belt and prepare to think like a photon.

Free energy does not occur in nature

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It’s not just that what we generally think of as free energy doesn’t occur in nature, but also that free energy does occur in the everyday lived environments of people in industrial nations, which we might thus say are unnatural. So what are instances of free energy that we experience in our lives, and why do they matter?

ODAC Newsletter – May 11

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Fears of a new phase in the European debt crisis, a decline in oil imports to China in April, and the prospect of a new round of international talks on Iran’s nuclear programme have seen oil prices drop back from recent highs in the past two weeks. Despite all this however, and reports from OPEC that it bolstered supply by 320,000 barrels in April, Brent oil still stands around $112/barrel.

Energy – May 10

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– Thomas Homer-Dixon: Exploring the climate “mindscape” (oil supplies and energy junk)
– Government influence is negative for energy fuel policy
– The German Switch from Nuclear to Renewables
– Scientists’ Arctic drilling plan aims to demystify undersea greenhouse gases
– Ancien directeur de TOTAL: Nouvelles découvertes et gaz de schiste retarderont à peine le pic pétrolier

ODAC Newsletter – May 4

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The shale gas ‘revolution’ suffered another blow this week as the US Securities and Exchange Commission announced an investigation into dealings between industry leader Chesapeake Energy and its chief executive Aubrey McClendon. It emerged recently that McClendon had been taking a private stake in each well the company drills and, unbeknownst to shareholders, borrowed over $1 billion against them…

My Neighbors Use Too Much Energy

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I have described in a series of posts the efforts my wife and I have made to reduce our energy footprint on a number of fronts. The motivation stems from our perception that the path we are on is not sustainable. Our response has been to pluck the low-hanging fruit, demonstrating to ourselves that we can live a “normal” life using far less energy than we once did. We are by no means gold medalists in this effort, but our savings have nonetheless been substantial. Now we shift the burden off of ourselves, and onto our neighbors. You don’t have to run faster than the bear—just faster than the other guy. In this post, I summarize our savings relative to the national average, add a few more tidbits not previously covered, put the savings in context, and muse about ways to extend the reach of such efforts.

Moving towards ethical energy

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A question that seems to garner a lot of debate whenever the topics of climate change and peak oil are raised is what our future sources of energy might look like. This is a common feature of groups involved in the Transition movement, since the vast majority of us in the north depend so much on finite sources of fossil fuels to power our modern, civilised lifestyles. Ever since the advances of the industrial revolution allowed us to harness the power of coal and oil, we have built our society around the potential of fossil fuels to provide us with the concentrated energy necessary for the processes involved in heavy industry. These days, access to affordable, reliable electricity is seen by many as a basic human need.

China’s looming conflict between energy and water

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In its quest to find new sources of energy, China is increasingly looking to its western provinces. But the nation’s push to develop fossil fuel and alternative sources has so far ignored a basic fact — western China simply lacks the water resources needed to support major new energy development.

Top 11 FAQs

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I’ve been giving lectures on Peak Oil for over a decade now, and always look forward to the question period after the main show. It’s an opportunity to interact with the audience and take questions…Here are the top 11, along with brief sample replies and some resources for further reading.

 

Can renewable energy sustain consumer societies?

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A new report has just been published which ought to provoke a Copernican revolution in dominant conceptions of renewable energy and of sustainability more generally. The message may not be one that environmentalists want to hear, but it is one that we must all take very seriously, or risk having our good intentions dedicated to goals that cannot actually solve the very real environmental crises that we face.