Solar Panel Installation in European Union: Market Size, Businesses & Forecast 2026

The solar panel installation industry in the European Union encompasses the technical deployment, integration, and maintenance of photovoltaic (PV) systems across residential, commercial, and utility segments. Driven by the bloc's aggressive climate targets and energy security initiatives, the industry has established a robust regional presence, supporting an estimated employment of 764,400 people within the EU in 2024 according to the International Renewable Energy Agency (IRENA). However, after years of rapid expansion, the market entered a period of temporary consolidation, with annual EU installations slightly contracting by 0.7% to 65.1 GW installed in 2025 as reported by SolarPower Eur

Industry snapshot

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What does the Solar Panel Installation in European Union industry cover?

The solar panel installation industry in the European Union comprises the structural and electrical assembly, configuration, and grid-connection of solar photovoltaic (PV) and solar thermal systems. The scope spans utility-scale ground-mounted solar farms, commercial and industrial (C&I) rooftop arrays, and residential or plug-in balcony systems. It excludes the baseline factory manufacturing of PV cells and wafers, focusing instead on onsite engineering, procurement, construction (EPC), and subsequent operations and maintenance (O&M) services.

• •Covers both centralized power generation infrastructure and decentralized distributed networks like rooftop solar.
• •Includes the deployment of specialized co-location systems such as agrivoltaics and co-located battery storage.
• •Encompasses both photovoltaic electricity generation and solar thermal systems for water and space heating.

Who operates in the industry and how is it structured?

The EU market is structurally diverse, shifting heavily toward localized installation networks for small-scale projects while relying on large multinational EPC contractors for utility-scale deployment. In recent years, a distinct segment shift occurred as residential rooftop support schemes faced reductions across member states, changing the project mix significantly. For the first time, large-scale utility solar farms constituted over 50% of the newly installed capacity across the EU in 2025, altering the operating dynamics for installers.

• •The residential rooftop market contracted, dropping from a 28% share of EU installed capacity in 2023 down to 14% in 2025.
• •Market activity remains highly concentrated in key member states, with Germany and Spain maintaining their status as the largest regional deployment hubs.
• •Emerging eastern European corridors are expanding rapidly, with Romania and Bulgaria entering the top 10 EU solar markets for the first time in 2025.

What drives demand in the industry?

Demand is fundamentally underpinned by legislative mandates, national recovery funding, and corporate decarbonization goals. While the acute retail energy price pressures of prior years have softened, long-term electrification across the transport and industrial sectors sustains commercial demand. Additionally, public grid modernization investments and national funding programs provide direct financial lifelines to large deployment projects.

• •National recovery and resilience funding deadlines acted as primary deployment catalysts in faster-growing markets like Bulgaria in 2025.
• •Accelerating demand for commercial and utility-scale corporate Power Purchase Agreements (PPAs) drives persistent corporate procurement.
• •Aggressive building mandates requiring mandatory solar integration on new public and commercial properties act as long-term volume drivers.

Who are the notable companies in the industry?

The competitive landscape features intense fragmentation at the regional residential level, contrasted by a competitive cohort of large public utilities, independent power producers (IPPs), and engineering multinationals driving utility installations. These operators manage extensive pan-European project pipelines, navigating supply chain changes and localized grid constraints. Profitability for standalone utility operators faces challenges from increasing hours of negative electricity pricing during peak generation periods.

• •RWE AG actively operates as a prominent developer and installer, commissioning co-located agrivoltaic and storage assets across Europe.
• •Iberdrola SA commands large-scale utility installation pipelines, anchoring massive capacities particularly across the Iberian peninsula.
• •EDF Renewables, a subsidiary of Électricité de France (EDF), maintains a dominant footprint in commercial and utility-scale solar execution.
• •Enel Green Power, part of Enel SpA, designs and installs significant utility-scale PV infrastructure across multiple southern and central European markets.

What are the recent trends and outlook?

The industry is adjusting to a post-energy crisis stabilization phase, experiencing its first annual deployment slowdown in nearly a decade. Total annual additions decreased minutely from 65.6 GW in 2024 to 65.1 GW in 2025, signaling an immediate need for systemic structural changes. Industry trade groups project that installation volumes will experience an ongoing temporary dip through 2026 and 2027 before returning to expansion in the latter half of the decade.

• •Total cumulative operating capacity achieved an estimated 406 GW by the end of 2025, satisfying the intermediate milestones of the EU Solar Strategy.
• •The emphasis of deployment is transitioning from sheer capacity additions to system flexibility, smart grid infrastructure, and integrated battery storage.
• •The market is anticipated to return to sustained growth by 2028, with annual installations projected to rise back to approximately 67 GW by 2030.

How is the industry regulated?

Compliance within the industry is strictly governed by European Union climate frameworks, permitting updates, and grid connection rules. The Net-Zero Industry Act designates solar PV and solar thermal as strategic clean technologies, prompting streamlined administrative tracks. However, changes in localized subsidy structures, such as the phase-out of the Superbonus scheme in Italy or changes to net-metering in the Netherlands, directly alter regional project compliance and returns.

• •The 2022 EU Solar Energy Strategy originally established an official intermediate objective of achieving 380 GW of capacity by 2025, which the industry successfully surpassed.
• •The Renewable Energy Directive (RED) continuously dictates escalating national renewable targets, forcing member states to ease administrative bottlenecks.
• •Revised EU frameworks place increasing pressure on developers to address circularity, end-of-life solar panel recycling, and localized supply sourcing.

Government, statistical and trade sources used for this Claight analysis.

• IRENA Renewable Energy and Jobs Annual Review 2025 ·
• SolarPower Europe Global Solar Market Outlook 2026-2030 ·
• Eurostat Energy Statistics 2025-2026 ·
• European Commission Directorate-General for Energy 2026