InvestingWIDE OPEN
Vehicle-to-grid and battery arbitrage
Buy cheap off-peak power, sell high — genuinely early-stage tech with a real payback period.
Cost$$$$$$3,000–15,000
Ready in3–12 mo
Ceiling$100
Ceiling evidenceESTIMATED
SCORE 30
12 themes · every figure graded for evidence · four new every Monday
Ways to make extra money
What can you start, with what you’ve actually got?