Independent power producer Prosalia has commissioned a 15 MW/60 MWh battery at a solar photovoltaic plant in Portugal, while utility EDP has integrated storage into a hybrid wind-and-solar facility in Spain, marking the first commercial-scale deployments of co-located renewables-plus-storage in both countries. These projects move hybridisation beyond pilot status and signal that Iberia’s grid operators and market designers are beginning to value the firming and flexibility services batteries provide alongside variable generation.
Prosalia’s four-hour duration system in Portugal is designed to shift midday solar output into the evening peak, reducing curtailment risk and capturing higher price periods in the Iberian wholesale market. The asset operates under a merchant revenue model supplemented by ancillary service contracts, a structure that developers across Southern Europe are watching closely as a template for bankable storage business cases without long-term capacity payments.
EDP’s Spanish installation takes the concept further by adding batteries to a site that already combines wind and solar generation, creating a multi-technology portfolio that can smooth output across daily and seasonal cycles. The utility has not disclosed the storage capacity, but the project’s commercial operation status indicates that the Spanish market’s evolving balancing mechanisms and intraday trading windows are already providing sufficient price signals to justify the investment.
Both deployments reflect a broader shift in Iberian energy policy: Portugal’s updated National Energy and Climate Plan and Spain’s storage strategy explicitly target hybrid projects as a cost-effective way to meet 2030 renewable targets while maintaining system adequacy. Grid operators in both countries have streamlined connection procedures for co-located assets, and regulators are refining market rules to allow stacked revenues from energy arbitrage, frequency response, and capacity remuneration mechanisms.
The next test will be how quickly the market rewards the flexibility these hybrid plants deliver. As solar saturation deepens in Spain and Portugal, the marginal value of midday generation falls, while evening ramp needs rise — precisely the profile batteries are built to address. If current revenue streams prove durable, the Prosalia and EDP projects will likely trigger a wave of similar retrofits across the peninsula’s existing renewable fleet, accelerating the transition from standalone generation to integrated clean energy hubs.
Read the full report at Energy Storage News.