In recent years, residential solar energy has acted as one of the most important growth anchors in the European solar market. Rooftop installations in key markets helped absorb production capacity, accelerate consumer adoption and normalize solar energy as a mainstream investment for households. During periods of market uncertainty, residential demand has repeatedly provided stability and momentum for the broader PV sector.
However, that role is now evolving. As European solar markets focus on larger-scale C&I and utility projects, residential PV installations showed a year-on-year decline in 2025, due to a combination of market saturation, reduced support incentives, restrictions on network exports and increasingly selective consumer behavior, a dynamic explored in more detail in our recent analyzes of broader market adjustments.
This shift does not indicate a loss of relevance for the residential segment. The momentum generated by residential solar energy following Ukraine’s war, energy insecurity and higher electricity prices is now branching out into adjacent technologies and upgrades, such as digitally enhanced energy management solutions that improve flexibility, self-consumption and control at the household level. Energy storage, balcony systems, smart energy management platforms and AI-driven optimization solutions are increasingly determining where residential solar growth is taking place.
What do prosumers and installers ask?
Insights from EUPD SolarProsumerMonitor© 2025/26based on surveys and interviews with more than 7,900 solar energy prosumers in Germany, indicate a clear shift in expectations within the residential segment. Research results show that residential demand is increasingly driven by system upgrades and complementary technologies, rather than initial PV adoption, with many existing PV owners prioritizing energy storage, smart control and system optimization. Prosumers consistently emphasize the importance of further advances in decentralized storage to better manage self-consumption and local overcapacity under constrained grid conditions. Many respondents also explicitly highlight bi-directional charging and vehicle-to-grid (V2G) capabilities as an important next step, more closely linking electric vehicles and home storage within the household energy system.
At the same time, prosumers report that there are more and more challenges with purchasing decisions. Responses indicate that price comparisons alone are no longer seen as reliable indicators of product quality, while the lack of widely trusted, unbiased benchmarks makes it difficult to assess long-term reliability and performance. Battery life and reliability are consistently among the top decision criteria, often outweighing initial price considerations, reflecting prosumers’ increasing focus on system sustainability and total cost of ownership.
These expectations are also closely reflected on the installer’s side. According to feedback recorded in EUPD’s PV & EES InstallerMonitor©Installers increasingly expect residential systems and supporting technologies to be seamlessly integrated into home automation environments. Intelligent tools that transparently track energy savings and performance, along with system-level integration of AI-driven storage, charging infrastructure and charge management, are increasingly seen as core requirements rather than optional add-ons.
Why do residential customers remain relevant beyond solar energy?
Prosumers’ responses indicate that they are increasingly prioritizing improving system performance and control, and increasing long-term economic value. For private suppliers, this signals a shift from one-off hardware sales to longer-term engagement models, as value creation increasingly follows households through subsequent system expansions and renovations.
In mature rooftop markets, this evolution is already visible in the way demand priorities are changing. German prosumers report a growing focus on self-consumption optimization and the use of dynamic tariff structures, reinforcing interest in residential energy storage and intelligent energy management. At the same time, feedback from installers in the Netherlands points to rising expectations for storage deployment as net metering systems approach phase-out, further increasing the relevance of smart control and automated load optimization.
In addition to these developments, balcony PV and balcony storage are emerging as fast-growing residential sub-segments, especially among apartment dwellers and urban households previously excluded from rooftop PV adoption. When asked about primary purchasing motives, prosumers most often mention reducing electricity costs and expanding existing PV systems to better cover household electricity needs. Ease of installation is also among the most important motivations, in addition to interest in the technology itself. In European markets, Germany has established itself as the leading market for balcony PV, supported by simplified registration frameworks for systems below 2 kW. According to the EUPD matrix for global energy transition (GET).©In Germany, the segment recorded year-on-year growth of more than 42%, while the number of confirmed balcony storage spaces rose from around 13% in 2024 to around 35% in 2025. Similar regulatory easing is now taking place in other European markets, including Belgium and Poland, where new frameworks for small plug-and-play systems from less than 800W to 1kW are expanding access and reinforcing the role of compact, storage-enabled residential configurations strengthen.
Taken together, these developments illustrate that while residential PV installation volumes are declining, the residential customer base itself remains highly relevant as demand shifts to adjacent energy technologies. Rather than exiting the market, households continue to invest in upgrades, add-ons and system expansions that build on existing PV installations. In an increasingly selective market environment, feedback from installers highlights that manufacturers’ ability to support retrofits, ensure cross-brand compatibility and enable seamless integration between storage, EV charging and energy management systems is becoming a key factor in maintaining the relevance and growth of the residential market.
Innovation is already responding to a more selective housing market
As home energy technologies continue to diversify, leading brands are already differentiating themselves through targeted product innovation that closely aligns with the evolving expectations of prosumers and installers. To further support informed decision making and recognize manufacturers’ progress, EUPD’s Top Innovation Award (TIA) highlights technologies that demonstrably meet the expectations of real prosumers and installers.
Recent TIA recognized technologies provide concrete examples of how leading manufacturers are responding to these evolving residential system requirements. Zendure’s SolarFlow 2400 AC introduces an AI-enabled, AC-coupled plug-and-play storage solution that simplifies installation while enabling scalable capacity and intelligent charging and discharging in residential setups. EcoFlow’s STREAM Series Plug & Play solar power plant connects modular batteries, microinverters and solar power generation in an AI-managed home energy network designed to maximize solar energy use and reduce grid dependence, especially in urban and balcony PV applications. FENECON’s FEMS provides an open, AI-enabled energy management platform that integrates PV, storage, EV charging and adjustable loads under dynamic tariff conditions, reflecting the growing demand for vendor-agnostic system intelligence. BYD’s residential energy storage system uses vehicle-grade LFP battery technology in a modular, compact design, emphasizing long-term safety, durability and ease of installation, while supporting flexible system expansion and compatibility with multiple inverter platforms. AIKO’s NAVIGATOR Intelligent Module integrates module-level intelligence directly into PV hardware, enabling real-time monitoring, fault detection and performance optimization without additional system complexity.
These examples show how residential innovation is increasingly focused on intelligence, integration and reliability, tailoring product development to the practical requirements of European prosumers and installers as the residential PV market becomes more selective.
Demand for housing is being redefined, not withdrawn
Developments in European residential solar markets point to a recalibration rather than a retreat. While volumes of rooftop PV installations have declined, insights from prosumers and installers show that engagement in residential energy technologies remains active and evolving. Households that adopted PV in earlier growth phases continue to invest, but increasingly through upgrades, extensions and improvements that build on existing systems.
Survey feedback shows that increasing attention is being paid to long-term reliability and better control over energy consumption under changing grid and price conditions. This is reflected not only in the increasing interest in home storage and intelligent energy management, but also in the rapid adoption of smaller-scale and accessible formats such as balcony PV and balcony storage. This shift shows that demand for housing is spreading across a wider range of applications and use cases.
What emerges is a residential energy market that remains highly relevant, even as its growth profile changes. The direction is clear and leading players are already responding. Innovation-driven portfolios built around complementary residential technologies are shaping the next phase of growth in the European residential energy market.
Authors: Saif Islam and Varun Mahankali
Saif Islam is a Senior Consultant at EUPD Research, contributing to the organization’s mission to deliver high-quality market intelligence, strategic insights and industrial research in the global renewable energy and sustainability sectors. With 12 years of experience in energy market analysis and sustainability-based strategy, he supports stakeholders in understanding market dynamics, emerging technologies and evolving policy landscapes. He can be reached at s.islam@eupd-research.com.
Varun Mahankali is a senior consultant and manager of the Top Innovation Awards at EUPD Research. He has more than five years of experience in clean technology research and consulting. His expertise includes market information, innovation analysis and advice within the sustainable energy sector. He can be reached at v.mahankali@eupd-research.com.
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