7 key questions shaping Italy’s solar & storage market

Introduction

According to Terna, Italy reached more than 43 GW of installed solar capacity at the end of 2025 (Terna, 2026). Energy storage is also scaling rapidly, with nearly 5 GWh added in 2025 alone, signaling a shift from pipeline to real system integration.

Yet this growth is increasingly exposing structural challenges. Italy’s power system remains constrained by grid bottlenecks, particularly between the generation-heavy South and demand centers in the North, limiting the system’s ability to absorb new renewable capacity (Aurora Energy Research, 2025). As a result, curtailment is expected to rise sharply, with Aurora forecasts pointing to a sixfold increase by 2030 from approximately 338 GWh in 2024, alongside potential revenue losses for affected assets (Montel, 2025).

In response, storage is moving from a complementary technology to an inevitable part of the system. New market mechanisms such as MACSE, alongside evolving revenue structures, are reshaping how storage projects are financed and deployed, shifting the market from merchant-driven opportunities toward more structured models (Modo Energy, 2025) (Pexapark, 2025). Meanwhile, investor interest is increasingly shifting toward hybrid solar & storage projects, which are seen as a way to mitigate curtailment risk, optimize revenues across multiple streams, and improve overall project bankability (Energy Storage News, 2026).

As Italy’s energy landscape evolves, new questions are emerging about market development. These questions will define how solar and storage develop in the years ahead. This article brings together insights from recent market reports and industry analyses to frame the most pressing topics shaping Italy’s solar and BESS landscape today. Rather than providing definitive answers, it highlights the key uncertainties, trade-offs, and structural shifts currently influencing project development, investment decisions, and system design.

The questions, ranging from grid constraints and curtailment risk to evolving revenue models and policy mechanisms, offer a structured way to understand where the market is heading.