If trends hold, batteries will simply continue their 7% per year natural price decline. Add that to the 30% promised by the gigafactory and you are talking a 60% reduction by 2018. What would that do for Tesla's profitability and pricing flexibility?
My understanding was the 30-40% numbers already are the total cost reduction targets for the gigafactory. I can't repeat my articles in detail here but as a summary I fail to see why large (mostly Asian) competitors couldn't match these price reductions over time, many of them have decades of experience in battery manufacturing and extensive supply chain ties (Asian conglomerates with direct stakes in mining/raw material logistics).
I see Asian companies (many of them new entrants or existing battery suppliers) dominate the EV mass-market segment over time.
On the R&D side of things, many smart people worldwide are working on better battery tech all the time. The major tech disruptions are still to come (nanowires, Li-Air, Li-Sulfur, supercapacitors...).
Market and technology leadership may change many times until EVs as a category mature within 1-2 decades.
Anyway, that's my summary.
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