For sunny example locations like Las Vegas, or cities in Africa, Middle East, they suggest that 6GW of solar and 17GWh of storage can provide 1GW 24hr power for ~95% of the year. And at a cost of just over $100/MWh. And similar costs for demand side at 5kWp and 17kWh to provide 1kW 24/7.
Obviously, this is more of a focus on sunny climes, as Birmingham comes in at 62% and $160, and I'll assume most of that is in the sunnier 8 months, so wind is our superpower. But of course most of the world population lives in areas sunnier than Birmingham.
Interestingly, the costs have fallen 22% v's last years estimate. I'd suggest that PV and storage is now simply unstoppable, and will become the main source of leccy in many areas, and perhaps for most of the people, especially those still developing and rolling out power to greater %ages of the population.
Worth a read, at least the first page/highlights and the world map showing the %ages and costs for different parts of the world. [Slight shame Aus isn't specified, as I suspect they'd do very well too.]
Solar electricity every hour of every day is here and it changes everything
This report unpacks the concept of 24-hour electricity supply with solar generation — how solar panels, paired with batteries, can deliver clean, reliable electricity around the clock. It compares cities across the world, showing how close they can get to solar electricity 24 hours across 365 days (24/365 solar generation), and at what price. Focused on project-level applications like industrial users and utility developers, the report shows how batteries are now cheap enough to unlock solar power’s full potential.
The economics are great in sunny cities – just $104/MWh to get 97% of the way to 24/365 solar, 22% lower cost than just a year earlier and cheaper than new coal or new nuclear.
In a sunny city like Las Vegas, the estimated Levelised Cost of Electricity (LCOE) at this 97% benchmark is $104/MWh. This is already 22% lower than the $132/MWh estimate based on global average capital costs of solar and battery a year earlier. It is also more cost-effective than coal in many regions ($118/MWh) and far cheaper than nuclear ($182/MWh).