On July 9, 2026, at the Solarplaza Summit Italy 2026, leading storage analysts and traders gathered to analyze how energy storage developers can build bankable revenue stacks in Italy. The discussions focused on comparing the state-backed MACSE revenue contract against the technology-neutral Capacity Market and multi-market merchant trading.
Key takeaways
- MACSE revenue mechanics: Italy's MACSE scheme offers 15-year fixed revenues for utility-scale BESS, but takes back 80% of ancillary service market (MSD) profits.
- The Capacity Market alternative: Standalone BESS participating in the Capacity Market secure smaller fixed premiums (€45,000–€47,000/MW/year) but retain 100% of wholesale trading and balancing revenues.
- Wholesale volatility shift: As ancillary service markets saturate, intraday (MI/XBID) and day-ahead (MGP) spreads driven by solar penetration will form up to 80% of storage revenues by 2028.
- Duration matters: 4-hour to 8-hour battery storage configurations offer higher project profitability under current CapEx conditions because they can capture broader daily price spreads.
The search for fixed revenues in a volatile market
As Italy accelerates solar deployment toward its 2030 renewable targets, daytime wholesale electricity prices are being significantly suppressed during peak sun hours, particularly in Southern regions and the islands. For battery storage developers, this market volatility creates opportunities for energy arbitrage. However, project financiers require stable cash flows to authorize final investment decisions.
Italy offers two main state-backed mechanisms to support the bankability of utility-scale storage: MACSE (Meccanismo di Approvvigionamento di Capacità di Stoccaggio Elettrico) and the Capacity Market. Choosing between these schemes shapes the operational strategy, asset design, and financial returns of a BESS project.
MACSE: high security at a low clearing price
Designed specifically for long-duration storage systems, MACSE provides winning bidders with a 15-year fixed annual contract awarded through competitive auctions managed by Terna.
The inaugural MACSE auction in late 2025 awarded 10 GWh of battery storage capacity for delivery by 2028. Demand from developers was four times oversubscribed, resulting in a clearing price of €13,000/MWh/year—substantially lower than the €37,000/MWh/year price cap set by regulators.
The operational trade-off
While MACSE provides high revenue certainty, it limits market upside. Under the scheme's rules, Terna directs the dispatch of the asset for grid balancing. While operators can participate in the ancillary services market (MSD), 80% of all net revenues earned on the MSD are clawed back by the state.
Consequently, MACSE is primarily suited for risk-averse institutional capital, large utility developers, or brownfield thermal plant conversions with lower CapEx hurdles.
The Capacity Market: retaining merchant upside
For developers seeking higher returns, pairing the Italian Capacity Market with algorithmic multi-market trading presents a compelling alternative.
Unlike MACSE, the Capacity Market is technology-neutral and awards 15-year fixed contracts for new capacity, historically clearing between €45,000 and €47,000/MW/year.
By securing a Capacity Market contract, the BESS owner obtains a stable revenue floor covering 15% to 20% of total annual cash flows while retaining 100% of all profits generated in wholesale and balancing markets.
Data from Entrix shows that an optimized 4-hour battery operating on merchant wholesale markets and MSD in 2025 could generate between €135,000/MW/year in Central-South Italy and up to €180,000/MW/year in Northern Italy.
Trading dynamics: the shift to intraday arbitrage
As battery storage capacity connects to the Italian grid, the ancillary services market will experience rapid price compression. The total volume required by Terna for balancing mechanism (MB) services is relatively shallow—estimated at roughly 2.5 GW of 4-hour battery capacity nationwide.
As ancillary markets saturate, trading strategies must shift toward multi-market wholesale arbitrage:
- Day-Ahead Market (MGP): Optimizers lock in primary charge/discharge positions based on daily solar generation curves and evening peak demand.
- Intraday auctions and continuous trading (MI/XBID): Battery software re-optimizes positions in real time, taking advantage of short-term demand fluctuations and renewable energy forecasting errors.
- Virtual cycling: Advanced automated trading platforms execute virtual cycles across day-ahead and continuous intraday markets—capturing spreads without physical battery degradation until final dispatch.
Asset duration: why 4 hours is the sweet spot
Financial modeling by Clean Horizon and Entrix indicates that 4-hour storage assets currently offer optimal risk-adjusted returns for merchant and Capacity Market strategies in Italy.
While shorter 1-hour or 2-hour batteries can capture initial ancillary service pricing, 4-hour systems provide the capacity required to trade across broad evening peak price spreads and maintain necessary state-of-charge levels during continuous intraday trading. Furthermore, longer-duration assets benefit from improved de-rating factors in state capacity auctions, enhancing overall debt sizing and bankability.
If you want the full picture of market dynamics, grid-connection reforms, and project-finance discussions analyzed at The Solarplaza Summit Italy 2026, read our complete event report here: Italy's solar & storage market is evolving. Here's why.
