It varies based on your chosen set up and how you use the ecosystem. However, if used optimally to reduce spending during peak hours, you could save over $1000 a year with 2 DELTA Pro’s, a smart home panel and 2400W worth of EcoFlow solar panels. That assumes average US energy rates. You can save up to double that if you use DELTA Pro’s extra batteries in addition, and if your home has a higher solar supply.