There's always the opinion that solar is useless on cloudy days. It's my understanding that on a normal cloudy day they're only 25% as efficient as when sunny,

There's always the opinion that solar is useless on cloudy days. It's my understanding that on a normal cloudy day they're only 25% as efficient as when sunny, and 10% when it's really cloudy. So, not great, but it's something that is being improved upon all the time. > In some cases, clouds can actually result in better panel performance than standard sunny weather. A cloud can reflect or sometimes even magnify sunlight, which results in additional power output from your solar panels. [0] In my country (Oz) we have two states that are into solar: SA has a tesla battery plant (built in <100 days) [1], but more as a 'surge saver', and WA which has recently mentioned it's about to reach serious trouble because solar is now getting in the way of it's existing non-renewable coal (meaning there's an over supply). WA doesn't have battery storage up and running, whereas in SA the tesla plant can ramp up demand almost instantaneously and is saving a bucket load of cash per year (because the coal plants don't need to spin up another turbine to meet demand: something which takes hours to achieve AND is costly) > "We know that the 100 megawatt capacity of the existing Hornsdale battery has saved South Australian electricity consumers $40 million per year since its inception," he said. [1] [0] https://news.energysage.com/solar-panels-work-night-cloudy-day/ https://news.energysage.com/solar-panels-work-night-cloudy-d... [1] https://www.abc.net.au/news/2019-11-19/sa-big-battery-set-to-get-even-bigger/11716784 https://www.abc.net.au/news/2019-11-19/sa-big-battery-set-to... In short, the good thing about solar is: - easy to set up, low cost, easy to maintain, easy to upgrade, easy to switch off if over supply ever happens. - good for moving away from coal provided you have storage. As other's have mentioned, the nuclear option costs billions and takes years to set up whereas battery storage of renewables is very very quick indeed to set up, and instantly produces savings.