Electricity

Tom Murphy Interview: Resource depletion is a bigger threat than climate change

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Rising geopolitical tensions and high oil prices are continuing to help renewable energy find favour amongst investors and politicians. Yet how much faith should we place in renewables to make up the shortfall in fossil fuels? Can science really solve our energy problems, and which sectors offers the best hope for our energy future? To help us get to the bottom of this we spoke with energy specialist Dr. Tom Murphy, an associate professor of physics at the University of California. Tom runs the popular energy blog Do the Math which takes an astrophysicist’s-eye view of societal issues relating to energy production, climate change, and economic growth.

If only we had free energy

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I thought I’d do a thought experiment. Suppose tomorrow morning a hypothetical university—let’s call it T.I.M.—sends out their weekly press release claiming a “revolutionary breakthrough” that will change the way we think about energy. Unlike every other time in the past decade they’ve made this claim, though, suppose this time it’s actually true: they’ve discovered a way of producing extremely cheap energy—as near to “free energy” as can be imagined.

Space-Based Solar Power

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A solar panel reaps only a small portion of its potential due to night, weather, and seasons, simultaneously introducing intermittency so that large-scale storage is required to make solar power work at a large scale. A perennial proposition for surmounting these impediments is that we launch solar collectors into space—where the sun always shines, clouds are impossible, and the tilt of the Earth’s axis is irrelevant.

Energy in East Africa

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In most East African countries access to electricity is very low. Besides electricity, there is a basic need for energy. In Eastern African countries most of the energy consumed is produced from traditional solid biomasses, such as the burning of wood.

The search for combustibles begins early in the morning, includes several hours of walking, and, in cases where no trees are to be found, digging for roots with bare hands; in some regions this activity is accompanied by the constant danger of violent and sexual assaults. In areas where there is no wood left for burning, cow dung or other waste is used for fuel.

Nuclear – Mar 16

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-Older nuclear plants pose safety challenge: IAEA
-Protesters link arms around the world to decry nuclear power
The Fukushima Nuclear Disaster – One Year Later – Radio Ecoshock
-No Primrose Path
-Australia passes controversial nuclear waste bill
-IAEA: “significant” nuclear growth despite Fukushima

World energy consumption since 1820 in charts

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In this post, I provide…charts showing long-term changes in energy supply, together with some observations regarding implications. One such implication is how economists can be misled by past patterns, if they do not realize that past patterns reflect very different energy growth patterns than we will likely see in the future.

ODAC Newsletter – Mar 16

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Finally, a plausible explanation for the Obama-Cameron political orgy — ‘love-in’ doesn’t quite do it — in Washington this week. For Cameron the benefit of this floorshow was obvious — like Blair with Bush, revelling in the reflected glory of US power — but Obama’s motive remained a mystery. What could possibly justify gifting all that folderol and face time with the world’s most powerful man? Yesterday we got the answer: international cover for a politically motivated release from strategic petroleum reserves, that’s what.

Home Heating for the Hardy

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If you are on-board with the sentiment that we should strive to reduce the amount of energy we consume as a means to relieve pressure on a world suffering impending energy scarcity, then you probably want to know how one might proceed. In this post, I will describe the single-biggest energy-saving strategy I have employed in my home in the past five years, which slashed my natural gas consumption by almost a factor of five.

Renewable Energy – March 7

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-Sun, sewage and algae: a recipe for success?
-One of Largest Wind Farms Built in Ohio
-‘Germans Are Willing to Pay’ for Renewable Energies- Interview
-Wadebridge, the UK’s first solar-powered town – video
-Packing some power
-Controversial renewable energy report branded ‘shoddy nonsense’

How Boulder freed its electric company

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The city of Boulder, Colo., has won the right to take its power supply—and carbon emissions—away from corporate control. The change for Boulder came in November when voters passed two ballot measures that allow the city to begin the process of forming its own municipal power utility.