What "promised massive reductions" as you talking about?
$100kWh was thrown around:
https://cleantechnica.com/2014/09/05/teslas-gigafactory-may-hit-100-per-kilowatt-hour-holy-grail-ev-batteries-report-predicts/
Musk himself said he'd be “disappointed if it took us 10 years to get to $100 a kilowatt-hour pack.”
Looks like it's going to take them double that time. They are currently at $US187/kWh:
https://thedriven.io/2021/03/11/tesla-leads-on-ev-battery-costs-despite-soaring-lithium-prices/
$100 is not even projected by 2030, that would be 16 years and still not there.
Commodity prices aren't going to magically drop, and inflation is with us to stay. They couldn't even meet the "disspointing" target when commodity prices were low.
Let's be clear, he said he'd be "disappointed" to not reach a 100 $/kWh goal in 10 years during a Q2 earnings call in mid-late 2014. That's hardly promising and selling to the world that they WILL get 100$/kWh before 2024 as if he's trying to con the general public.
We should also note (in case anyone forgets) that
cell cost and
pack costs are different.
These "$100 is not even projected by 2030" estimates AFAIK are only coming from a single analyst source: Cairn Energy Research Advisors which appears to consistently give high estimates for Tesla's costs and give generous estimates for GM. The original report is also by CNBC which is known for heavy anti Tesla bias. Though even in this case, the relative performance to the Auto "industry average" is strong. Seems more like a lightly disguised GM puff piece to me.
May 2020, CATL (Tesla's Chinese battery partner) was cited by Reuters to have achieved beyond the goal with the help of Jeff Dahn at Dalhousie University.
The cost of CATL’s cobalt-free lithium iron phosphate battery packs has fallen below $80 per kilowatt-hour, with the cost of the battery cells dropping below $60/kWh, the sources said. CATL’s low-cobalt NMC battery packs are close to $100/kWh.
[...]
Battery expert Shirley Meng, a professor at the University of California San Diego, said NMC cells could cost as little as $80/kWh once recycling and recovery of key materials such as cobalt and nickel is factored in. Iron phosphate batteries, which are safer than NMC, could find a second life in stationary grid storage systems, reducing the upfront cost of those batteries for electric vehicle buyers.
https://www.reuters.com/article/us-autos-tesla-batteries-exclusive/exclusive-teslas-secret-batteries-aim-to-rework-the-math-for-electric-cars-and-the-grid-idUKKBN22Q1WCLatest 2020 annual survey from BloombergNEF "Battery Pack Prices Cited Below $100/kWh for the First Time in 2020, While
Market Average Sits at $137/kWh"
https://about.bnef.com/blog/battery-pack-prices-cited-below-100-kwh-for-the-first-time-in-2020-while-market-average-sits-at-137-kwh/Lithium-ion battery pack prices, which were above $1,100 per kilowatt-hour in 2010, have fallen 89% in real terms to $137/kWh in 2020. By 2023, average prices will be close to $100/kWh, according to the latest forecast from research company BloombergNEF (BNEF).
IEA has lithium automotive battery pack prices at
156 $/kWh in 2019 which matches
the BNEF 2019 findingIEA
, Evolution of Li-ion battery price, 1995-2019, IEA, Paris
https://www.iea.org/data-and-statistics/charts/evolution-of-li-ion-battery-price-1995-2019Mack Institute study: "the industry-wide average cost of battery packs in 2019 was
US $161 per kWh"
https://mackinstitute.wharton.upenn.edu/2020/electric-vehicle-battery-costs-decline/gmb42 also posted some sources
https://doi.org/10.1039/D0EE02681Fhttps://spectrum.ieee.org/energy/batteries-storage/chart-behind-the-three-decade-collapse-of-lithium-ion-battery-costsThese are also
industry average price trends
not Tesla's cost and they are well below the Cairn Energy Research Advisors reports.
Bloomberg Dec 2020 "Tesla, the world’s largest EV maker, pays an estimated average of
$115 per kilowatt-hour for batteries, according to the BNEF survey,
down from $128 last year."
https://www.bloomberg.com/news/articles/2020-12-16/electric-cars-are-about-to-be-as-cheap-as-gas-powered-modelsTrefis "We estimate that Battery costs for Tesla vehicles have declined from around
$230 per kWh in 2016 to
$127 in 2019...We estimate that Tesla's battery costs are about 20% below the industry average, driven by the company's higher volumes and battery chemistry."
https://dashboards.trefis.com/data/companies/TSLA/no-login-required/pNkbHhrb/A-Detailed-Look-At-How-Tesla-s-Battery-Costs-Impact-Its-Gross-MarginsBottom line:
Looks like they should get 100 $/kWh before 2024 if not already in some of their factories. <100 $/kWh has apparently already been achieved in least one partner factory.Please consider your sources and try to avoid biased single sources.
Aside: AFAIK Tesla only uses CATL's cobalt free batteries. Likely due to CATL's weak conflict materials policies and auditing.