Battery cost based on Power Pack 2 price: $437 per kWh

• PowerPack orders

Giga factory:

• sources: https://www.tesla.com/gigafactory, https://en.wikipedia.org/wiki/Gigafactory_1, https://insideevs.com/elon-musk-says-gigafactory-output-could-soar-to-150-gwh-annually/
• construction began June 2014, estimated completion 2020
• estimated cost $5 billion, shared with Panasonic ($1.6 billion originally, upped to ~$3 billion)
• Tesla spent $608 million by September 2016
• started making powerwalls and powerpack in Q1 2016
• planned capacity 50 GW in 2018, 150 GW in 2020, half for car batteries, enabling ~1 million cars / year (assuming average 70kw battery per car)

Factories from others:

• SK Innovations (provides Kia Soul EV, some cars made in China, will supply Mercedes), increasing production capacity to 4 GW/year by end of 2018 (capacity on March 2016 is 1.9) https://electrek.co/2017/03/06/sk-innovation-expanding-battery/
• CATLS (supplies NEVS), plans 50 GW by 2020 https://electrek.co/2017/03/01/chinese-battery-maker-catl-nevs-gigafactory/

Predictions:

• Panasonic predicts 3 million cars / year in 2026
• Total world battery production 174 GW by 2020. China: 108 GW, US: 38GW, Korea: 23GW, Poland: 5GW (https://electrek.co/2017/03/01/chinese-battery-maker-catl-nevs-gigafactory/)

Other car makers EV plans:

• Volswagen to build 1500 ev cars a day (~500k / year) in Zwickau factory https://electrek.co/2018/01/31/vw-electric-car-production-zwickau-factory/

Misc numbers:

• BMW makes 2 million cars a year (https://www.fastcompany.com/3052889/elon-musk-powers-up-inside-teslas-5-billion-gigafactory)
• growth of electric cars (including hybrids) up to 2016 https://www.titleproloans.com/discovery-center/travel-touring-and-transportation/electric-vehicle-sales-and-usage/