6.8 earthquake hits southwestern Japan, USGS says there's no threat of tsunami 
With summer upon us, cranking up the air conditioning is the most comfortable option, but the electricity bill that goes with it can be shocking.
That’s why Australians who have a house, a roof and some money are increasingly getting solar panels.
But there is a problem because there is a thing as too much solar.
Today, energy reporter Dan Mercer explains that the surge of solar power is risking stability of the power grid and it’s a bit like riding a bike.
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Dan Mercer, ABC energy reporter
The Pulse of Washington D.C.
