Energy issues: reduce, replace, get stuck?

“The human body burns energy at a rate of about 100 watt.” Just recently I read an article in which this was stated. I already knew it – at least, I had read it before – but I’d forgotten. The author also pointed out that a modest car (I forgot which model, but definitely no SUV, pick-up truck or anything like it) uses energy at a rate of 50.000 watt. That’s 500 times as much.

Ever since then I’ve had this, well, mantra stuck inside my head buzzing by every now and then:

“A car burns energy at the rate of 500 humans.”

  • 100 watt, that used to be as little as one 60-watt light bulb plus one smaller 40-watt light bulb. You couldn’t even light your house with that energy. One human, one room with the lights on. Heating not included. Unless you count the heat generated by those inefficient ‘light’ or rather ‘heat’ bulbs.
  • 50.000 watt, that means the energy of 500 humans to propel your miserable behind to your job and back. I commute by train so I’d need to calculate a bit to find out how many human energy units my commute costs. Still, it paints a really odd picture, those 500 tiny humans (TH) powering the commute of one person.

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