With the PV Established as one of the pillars of the Spanish electrical system, the sector is going through an intense phase in which coexist more production, volatile prices and greater weight of self-consumptionThis balance requires adjustments to grids, regulation, and storage to efficiently utilize each kilowatt of solar energy.
At the same time, information resources and projects emerge that bring technology closer to citizens and industry: from a UPV's informative website with updated information, to university facilities and off-grid battery solutions that illustrate how to integrate photovoltaics in diverse contexts.
Solar energy continues to grow in Spain
La PV maintains a notable advance: in May it reached around 26% of national electricity production and the installed power is around 34 GW, compared to 11 GW in 2020. Spain is now the second country in Europe in terms of PV capacity, only behind Germany.
The path continues to rise with public support and private investment. Academic sources linked to the project Fesolar They highlight that the sector chains years of maximum generation and that have been authorized hundreds of projects that mobilize billions, with an eye on double capacity by the end of the decade.
The national bar is ambitious: the PNIEC sets a target of 76 GW of photovoltaic energy by 2030, with a special push towards self-consumption, which is growing strongly in the industrial and residential sectors.
Fesolar: A guide to answering questions based on scientific evidence
The Fesolar page, developed by staff of the Polytechnic University of Valencia (UPV), was created to provide a thorough answer to frequently asked questions: costs, subsidies, lifespan, panel recycling, and their installation in protected buildings. The portal covers everything from the basics to technical content.
Among the most consulted messages, the team emphasizes that the modules exceed 40 years of life with proper maintenance and that the current industry does not employ rare earth in the majority of technologies; it also explains how to calculate the carbon footprint payback time.
The website dedicates sections to materials and technologies in use (silicon, perovskites), as well as new deployment typologies: vertical panels, agrovoltaica y floating photovoltaics, among others.
The project takes as reference initiatives of the CNRS and the French Photovoltaic Federation and is continuously updated. Among the upcoming improvements, the team points to the incorporation of recent data on the sharp drop in panel prices registered last year.
Self-consumption: temporary slowdown and proposals to revive it
Photovoltaic self-consumption maintains a broad social and business base, although it creates a chain of slowdown with falls of around 31% in new power during 2024. Even so, the accumulated total exceeds 8.000 MW and settled around 1.182 MW In the last year, with more than 50.000 households joining to this modality.
At the 5th UNEF Self-Consumption Summit, administrations and the sector discussed measures to regain traction: eliminate administrative obstacles, adjust procedures and facilitate the deployment of the storage as a key piece of flexibility.
- Simpler processing: exempt from the file small installations that barely inject, expand the simplified route up to medium powers and increase distance allowed between generation and consumption.
- Collective self-consumption: : manager figure to streamline procedures, make distribution easier and reduce redundant technical requirements.
- Economic incentives: efficiency deductions, reduced VAT for certain components, and invoice rewards for real savings.
- Storage: clear regulatory recognition of their role and more capacity to smooth out solar peaks and valleys.
UNEF has also published a Manual of Good Practices in Fire Safety, with design, installation and maintenance guidelines, and emphasis on the Technical formation and the use of approved components.
Prices, grid and batteries: the reverse of the boom
Rapid growth brings challenges. During times of high radiation, Spain produces up to more electricity than it demands, which pushes hourly prices to very low levels, and even to zero or negative in certain bands, putting pressure on solar asset revenues.
According to an analysis published by Financial Times, the profitability of projects has narrowed with falls in valuation: developments that two years ago were closed at around €200.000/MW are reportedly being negotiated between 28.000 and 89.000 €/MWThe newspaper adds that the deployment of network and storage has not kept pace with the generation.
BloombergNEF data cited in that report indicate that, since 2020, Spain has invested $0,30 in networks for every dollar allocated to renewables, compared to the European average of 0,70. European system operators already warned in 2017 of the need to deploy equipment that stabilizes the network and advanced investors.
Projects that bring about the transition: campus and isolated solutions
La University of La Laguna promotes photovoltaics in its buildings with an installation of around 1,54 MWp and more than 3.000 panelsThe plan, co-financed by the Government of the Canary Islands and Next Generation EU funds, is expected to cover approximately 32% of electricity consumption from the center.
In remote environments, the combination of solar and batteries allows for off-grid operation. A recent example integrates 70,74 kWp of modules, high power investment and a storage system 97 kWh coordinated by a EMS which prioritizes, at all times, the most efficient source, with generator backup only when essential.
The off-grid system has been designed with room to grow: you can add a few 50 kWp extra and double battery without major works, demonstrating how the smart management reduces fuel consumption and emissions in locations without reliable grid access.
Objectives of the PNIEC and the role of storage
For twelve consecutive months, between October 2023 and September 2024, renewables exceeded 50% of the electricity mix in all months. Driven by the photovoltaic (+22,3%) and hydraulics (+67,5%), reached 56,8% in the last mobile year, with the FV already as third technology of the System.
The PNIEC projects a 81% renewable generation by 2030, with power goals of 76 GW PV, 62 GW of wind power and 22,5 GW of storage. Electricity demand should climb to 358 TWh, which requires accelerating the electrification (electric mobility, heat pumps) and allow for more batteries and flexibility.
- Electromobility to absorb solar surpluses and shift consumption to hours of higher production.
- Batteries in homes, industry and the grid to integrate renewables and reduce waste.
- Flexibility and demand response to match generation and end use.
Planning and social acceptance: the map matters
The deployment must be in line with local reality. In Granada, objections to a 4,95 MW project along with El Fargue for its possible urban and landscape impact, asking territorial planning finer, complete technical studies and priority to nearby solutions such as the consumption and energy communities.
In cities and neighborhoods, shared models are gaining strength: collective self-consumption allows the energy of a roof to be distributed among several users (usually within a radius of up to 2 km), while the community solar panels They bring PV closer to buildings where individual installation is not feasible, with stricter proximity criteria in some modalities.
Photovoltaics is advancing at a good pace, but its maximization depends on Streamline procedures, strengthen networks, deploy storage and listen to the territoryBetween reliable information for the public, useful campus projects, and technical solutions in isolated locations, Spain has sufficient leverage to accommodate more solar energy into the system without losing sight of supply quality or social support.
