Spain has the sun, but it lacks 10 GW: What's holding back industrial self-consumption?

Spain needs to incorporate an additional 10 GW of self-consumption capacity by 2030 to reach the 19 GW target set in the Integrated National Energy and Climate Plan (PNIEC). With approximately 47% of the target achieved by the end of 2025, the country is entering a new phase of expansion in which industrial competitiveness is playing an increasingly important role.

Currently, the pace of expansion is far from that seen during the sector's boom. According to APPA Renovables, Spain added 1,214 MW of self-consumption capacity in 2025, 15% less than the previous year , marking its third consecutive year of decline in new installations. Of that capacity, 846 MW corresponded to the commercial and industrial segment , almost 70% of the total.

But what prevents an industry from fully utilizing its own renewable resources?

The availability of capacity in the networks, administrative authorizations and the conditions for marketing surpluses can determine both the power that is installed and the economic return of each project.

For large industrial consumers, generating their own electricity reduces their exposure to market volatility. Adding batteries expands this possibility by shifting energy to peak consumption hours, while active demand management allows for adapting certain production processes to renewable energy availability.

The opportunity extends beyond the Spanish market. Fossil fuels still account for 49.9% of final industrial energy consumption in the European Union , with natural gas representing 31.9%, while renewables and biofuels barely reach 11.3%. Meanwhile, the European Commission aims to raise the continent's electrification rate from 23% to 46% by 2040.

In this context, a study by EsadeGeo , prepared with Amazon's support and published in October 2016 , identifies six key areas for unlocking industrial self-consumption: permitting processes, municipal governance, social acceptance, grid access, surplus management, and energy optimization. Its recommendations include differentiated permits, energy storage, and mechanisms to better utilize existing electrical infrastructure.

Permits, networks and surpluses: the obstacles that hinder industrial investment

In Spain, industrial facilities that sell surplus energy may be subject to the same authorization regime as large power plants , with requirements for measurement, settlement and market representation that increase costs and prolong the process.

To address this, EsadeGeo proposes recognizing the strategic importance of industrial self-consumption and implementing expedited procedures to halve certain administrative timeframes . This measure would encompass hybrid projects, energy storage, and evacuation infrastructure.

It also calls for unifying municipal criteria, simplifying tax procedures related to IBI, IAE and ICIO, and improving the coordination of the 2.085 billion euros in self-consumption aid included in the PRTR , whose administrative fragmentation may hinder access for SMEs.

Access to the networks constitutes another bottleneck. Although Spain has regulated the release of 10% capacity at certain transmission nodes reserved for tenders , its reach is limited for consumers connected to distribution networks. Therefore, the study proposes extending these mechanisms, making available capacity more transparent, and introducing flexible permits for facilities with surplus capacity.

The impact already has an economic dimension. APPA estimates that 2,183 GWh of self-consumption could not be utilized during 2025 due to grid limitations and operational restrictions, with an estimated value of €82 million . The wasted energy is equivalent to approximately 21% of the production actually used that year.

In previous dialogues with Energía Estratégica , Jon Macías, president of APPA Autoconsumo , warned about the underutilization of renewable generation when analyzing the electrical needs of data centers.

“ Spain does not have a structural problem of insufficient electricity generation. On the contrary, we are reaching very high levels of renewable energy curtailment due to technical constraints and a lack of demand, resulting in us wasting around a quarter of the potential renewable generation according to the periods and criteria considered ,” he noted.

Macías also advocated objective criteria for allocating capacity at congested nodes and mechanisms that allow for distinguishing mature projects from speculative initiatives, without establishing priorities by sector.

Also, in a recent LinkedIn post, the president of APPA Autoconsumo reiterated EsadeGeo's conclusions and emphasized the challenge of translating Spain's renewable potential into new investments.

“ Spain has an extraordinary advantage in renewable resources. The challenge now is much more difficult: to convert that energy advantage into a competitive advantage ,” he argued, pointing to implementation as a condition for realizing industrial opportunities.

Storage and sale of surplus: the next business opportunities

EsadeGeo proposes dynamic tariffs and remuneration mechanisms for flexibility services so that industrial consumers can profit from managing their demand and participate in balancing markets.

It also proposes simplifying the sale of surplus energy, establishing transparent and, where appropriate, compensated dumping restrictions, and avoiding the double application of tolls and charges to electricity stored for own consumption .

These measures would allow renewable generation to be used during peak production hours, reduce peak demand, and optimize existing networks.

With the 2030 target on the horizon, the challenge will not only be to install more power, but to ensure that the industry can store, consume and market its own electricity under competitive conditions .

Amazon achieves 76% self-sufficiency: 8 MWh batteries and hybrid generation

Energy storage is gaining ground in the Spanish self-consumption sector. According to APPA Renovables, 339 MWh of battery storage were installed in 2025, a 119% increase over the previous year , in a market seeking to make better use of its own generation and reduce its dependence on the grid.

An example of this integration is Amazon's BCN4 logistics center in El Far d'Empordà (Girona) , which combines photovoltaic installations on roofs and canopies, a 2.2 MW wind turbine and 8 MWh batteries .

According to company estimates, the project achieves 76% annual energy self-sufficiency . Its intelligent management system allows for the storage of surplus energy, the shifting of consumption, and the reduction of injections during periods of congestion, thus improving the utilization of the electricity generated.

But incorporating these technologies also poses administrative challenges. Adding batteries or wind power to existing installations may require new permits and urban planning assessments , even when it doesn't increase the power fed into the grid.

Precisely to facilitate this type of project, Catalonia introduced changes through Decree Law 22/2025 , which simplifies certain procedures for self-consumption wind power installations, eliminates the building permit in certain cases and establishes height criteria linked to aeronautical easements.