My thinking for the future is something like this:
2017:
Tesla Energy: 6.5 GWh, 2.5 billion USD revenue, 10% margin, 250 million gross profit
Tesla Model 3: 57k cars, 3.5 billion USD revenue, 10% margin, 350 million gross profit
Tesla Model S/X: 100k cars, 9 billion USD revenue, 30% margin, 2.7 billion gross profit
Solar Roof: 250 MW, 1.25 billion USD revenue, 10% margin, 125 million gross profit
Tesla Network: Zero.
Total gross profit would be 3.425 billion. Assuming 2.5 billion goes to run the company, the net profit could be 925 million. And a P/E multiplier of 50 means the company would be worth 46.25 billion USD. Assuming 170 million shares, that would be a SP of 272 USD.
2018:
Tesla Energy: 12.5 GWh, 5 billion USD revenue, 15% margin, 750 million gross profit
Tesla Model 3: 373k cars, 20 billion USD revenue, 20% margin, 4 billion gross profit
Tesla Model S/X: 120k cars, 10.5 billion USD revenue, 30% margin, 3.15 billion gross profit
Solar Roof: 1 GW, 5 billion USD revenue, 15% margin, 750 million gross profit
Tesla Network: Zero.
Total gross profit would be 8.65 billion. Assuming 3.65 billion goes to run the company, the net profit could be 5 billion. And a P/E multiplier of 20 means the company would be worth 100 billion USD. Assuming 180 million shares, that would be a SP of 555 USD.
2019:
Tesla Energy: 30 GWh, 10 billion USD revenue, 15% margin, 1.5 billion gross profit
Tesla Model 3/Y: 500k cars, 25 billion USD revenue, 20% margin, 5 billion gross profit
Tesla Model S/X: 120k cars, 10.5 billion USD revenue, 30% margin, 3.15 billion gross profit
Solar Roof: 2 GW, 10 billion USD revenue, 15% margin, 1.5 billion gross profit
Tesla Network: Zero.
Total gross profit would be 11.15 billion. Assuming 4.15 billion goes to run the company, the net profit could be 7 billion. And a P/E multiplier of 20 means the company would be worth 140 billion USD. Assuming 190 million shares, that would be a SP of 736 USD.