### **Customer Economics** - **Payback period to customer** (must be <5-7 years to drive adoption vs 10-12 years without VPP) - **Customer acquisition cost** (CAC) vs lifetime value (LTV) from VPP contracts - **Churn rate** (customers dropping out of program) ### **Technical Performance** - **Dispatch uptime** (% of time batteries respond when called - must be >98%) - **M&V accuracy** (actual delivery vs promised capacity) - **Response time** (seconds to ramp from idle to full discharge) ### **Business Metrics** - **Capacity secured** (MW under contract) vs **capacity deployed** (actual batteries online) - **Revenue capture rate** (% of theoretical max revenue actually earned from optimization) - **Gross margin** on VPP services (after customer payments, before overhead) - **Platform leverage** (incremental margin as fleet grows) ### **Market Position** - **Utility relationships** (# of signed contracts, quality of partners) - **Installer network size** (distribution reach) - **Device integrations** (# of battery manufacturers supported) ---