They look like they belong in a modern art museum.

Photo from J Henry Fair, used with permission.

But this isn't an oil painting.

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For 7 hours last week, Germany paid its citizens to use electricity. For reals.

The question facing the shift to clean energy is 'when' not 'if.'

For a few hours on May 8, Germany was generating so much renewable electricity that people were actually getting paid to use energy.

Seriously. Here's a chart:

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