This document is a guide detailing Fluence Smart Service Plans, which are designed to enhance the performance and longevity of Smartstack battery storage systems. The plans include performance guarantees across key areas such as availability, energy capacity, dispatchable energy accuracy, and efficiency. The document outlines the guarantees offered, including a 99% availability guarantee and financial protections if performance metrics fall below specified thresholds. It describes the support services provided, including 24/7 remote monitoring and predictive maintenance alerts, which aim to minimize downtime and improve operational efficiency. Additionally, the guide explains how Fluence's guarantees extend to energy capacity and round-trip efficiency, with coverage lasting up to 25 years. The document emphasizes the importance of these guarantees in maximizing return on investment and reducing operational costs, thereby supporting customers in navigating the energy market with confidence.