Solar now ‘cheaper than grid electricity’ in every Chinese city

Re:Solar now ‘cheaper than grid electricity’ in every Chines... by martin_a on Tuesday August 13, 2019 @07:17AM (#20684614)

I'm no electrician myself, but I know that it's not easy to generate a really good sine wave with a constant frequency and match it to the grid.

While electronic componentes are making big steps in that direction, "classic" mechanical generators are still superior for this as they are running very constant.

That's why lots of people fear that solar panels with their sudden power generation (as in "clouds are gone, let's bring it on!") might be a danger to the grid as they are fluctuating quite a bit.

[ Parent | on HN ]

Re:Solar now ‘cheaper than grid electricity’ in every Chines... by pjc50 on Tuesday August 13, 2019 @08:55AM (#20685309)

It's definitely a variable, but in the UK "domestic" sizing is up to 4kW. I can induce the same variability in the grid by making a cup of tea with an electric kettle.

[ Parent | on HN ]

Re:Solar now ‘cheaper than grid electricity’ in every Chines... by martin_a on Wednesday August 14, 2019 @10:53AM (#20696146)

You mean the sizing of solar panels? I think in Germany it's higher, at least my landlord spoke about something like 25 kW, but I'm not totally sure about that.

[ Parent | on HN ]