Slashdot Mirror
Samoa Plans Switch To 100% Renewable Electricity -- Using Tesla's Batteries and Grid Controller (fastcompany.com)
An anonymous reader quotes Fast Company:
In seven years, the island nation of Samoa plans to run on 100% renewable electricity. Over the last year, the local utility has worked with Tesla to install a key piece of that plan -- battery storage, and also a software system that can control Samoa's entire electricity supply. In the past, like many islands, the country ran mostly on imported, expensive, and polluting diesel power. As recently as 2012, the country brought in 95 million liters of diesel.
Spurred by the cost and the threat of climate change -- Samoa is at particular risk from sea level rise and new outbreaks of climate-related diseases -- the country has been ramping up the use of renewables, with five large solar plants, a wind farm, and hydropower plants. But as renewable energy grew, the grid struggled with reliability.
"It had gotten to the point where just the solar, combined, could provide over half of the entire peak demand for the island, but they were having quite a few challenges managing that efficiently," says JB Straubel, Tesla's chief technical officer.... Tesla installed two of its "Powerpack" battery systems, and also developed and implemented island grid controller software that can control both the batteries and all of the power plants. "If a big cloud comes over the island and the solar drops very quickly, we can control the battery to make up the difference so we don't have to start a generator immediately, and we don't have to keep a generator running even when it might not be needed," says Straubel.
"It had gotten to the point where just the solar, combined, could provide over half of the entire peak demand for the island, but they were having quite a few challenges managing that efficiently," says JB Straubel, Tesla's chief technical officer.... Tesla installed two of its "Powerpack" battery systems, and also developed and implemented island grid controller software that can control both the batteries and all of the power plants. "If a big cloud comes over the island and the solar drops very quickly, we can control the battery to make up the difference so we don't have to start a generator immediately, and we don't have to keep a generator running even when it might not be needed," says Straubel.
It will be disconnected from the public internet.
No. Tesla doesnt sell user data to advertisers, nor do they place ads on any of their platforms.
Glad I could clear that up for you
Better for two reasons, it actually provides some data about the battery installation (it is 13.2 MWh of storage) and the site isn't packed with auto-play unstoppable video ad force-feeding like the FastCompany site.
But American Samoa, the U.S. territory, got Tesla batteries two years ago. This installation is 6 MWh, but since the population is much smaller (55,000 vs 195,000 for Samoa) it is enough to run the main island (Tutuila) for three days without needing any power production, and is nearly 100% renewable powered now.
Starships were meant to fly, Hands up and touch the sky - Nicky Minaj
Is on Saipan, part of the Commonwealth of the Northern Marianas Islands. It was constructed back in 2014. And yes, Saipan is American and the system was built and is operated by a private business. It also works a hell of a lot better than the local government run utility company that the US government has poured millions into.
"The average reporter we talk to is 27 years old......They literally know nothing." - Ben Rhodes
Woo woo - 100% free renewable power! But no mention of up-front capital costs. Given that batteries wear out and have to be replaced, some discussion of life-cycle cost would be interesting.
The summary links to a poor quality, ad-filled site, but this seems par for the course for /. these days. Even a tiny bit of effort Googling brings up more data though.
The entire project cost $8.8 million to install 13.5 MWh of storage, or $650/kWh, which is pretty good. The NREL (National Renewable Energy Laboratory) estimates the lifetime of a grid battery at 10 years. Estimates of swapping out new for old runs $250 kWh (the infrastructure and controllers are still in place, old batteries are recycled) so the average annual replacement cost runs $350,000, or about 3.8% of the original capital cost.
Pretty darn good! Woo hoo!
Starships were meant to fly, Hands up and touch the sky - Nicky Minaj
And where are they sourcing lithium, cobalt, rare earth metals? Any consequences?
They've been reducing the amount of cobalt required, down from 11 kg per car for the original Roadster and early Model S to 7 kg for S and X beginning in 2016 and an estimated 4.5 kg for the Model 3
Pain is merely failure leaving the body