I just feel the need to say the yard and meter weren't randomly established distances. They were chosen. Meter being the earth's circumference divided by 40 million (or rather the distance from the pole to the equator divided by 10 million). Useful for map making and navigating.
And the yard being the distance from the nose to the thumb of some British monarch, Henry I, I think. Useful for buildings and making sure things are within reach for the average person
In the future, private individuals will be able to operate mini solar systems as balcony power plants without complicated registration
This is the coolest part. As I understand it you'll be able to export 500w to the grid without requiring approval of your provider. The new units just plug into the wall and back feed power into your house to reduce your bill.
Depending on how the law is written, I can imagine people putting a battery between the solar and inverter so they could capture more energy and export the maximum 500w all day & night