Global Solar Slowdown Threatens Climate Goals—What Comes Next?
Shanghai, Saturday, 13 June 2026.
For the first time in over 20 years, global solar demand is set to decline in 2026, casting doubt on renewable energy targets. Market saturation, policy shifts, and supply chain disruptions are stalling growth, with the Netherlands and other nations facing slower progress in their energy transitions. Yet, breakthroughs in energy storage and rising demand from data centers and electric vehicles could revive the sector. Will innovation outpace the slowdown?
The Solar Industry’s Historic Slowdown
For the first time since the early 2000s, the global solar industry is facing an annual decline in demand, according to projections presented by BloombergNEF (BNEF) lead solar analyst Jenny Chase at the SNEC 2026 conference in Shanghai [1]. This downturn marks a significant shift in an industry that has seen exponential growth over the past two decades, driven by falling costs and supportive policies. The slowdown is attributed to a combination of market saturation, policy shifts, and supply chain disruptions, which have collectively dampened installation rates worldwide [1]. In the first quarter of 2026 alone, the Iberian Peninsula experienced an ‘all-time high’ of negative-price hours, approaching 555 hours for the year—over a third of the ~1,080 daytime hours in the quarter [1]. Such market conditions underscore the challenges facing solar deployment, particularly in regions where grid infrastructure and energy storage solutions have not kept pace with solar capacity growth.
The Netherlands at a Crossroads
The Netherlands, a leader in Europe’s renewable energy transition, is particularly vulnerable to this global slowdown. Solar energy has been a cornerstone of the Dutch strategy to reduce carbon emissions and meet climate targets, with the country ranking among the top five in the European Union for solar capacity per capita [GPT]. However, the projected decline in global demand threatens to slow the momentum of solar deployment in the Netherlands, where land constraints and grid congestion have already emerged as critical bottlenecks [GPT]. Industry experts warn that without innovative policies and technological advancements, the Dutch solar sector could face increased competition for investment, potentially delaying the nation’s transition to a fully sustainable energy system [1].
Energy Storage: The Silver Lining
Amid the gloomy outlook for solar, energy storage is emerging as a key driver of future growth. BNEF projects that global energy storage deployment will reach 158 GW / 459 GWh in 2026, a 41% increase over 2025’s record of 112 GW / 307 GWh [1]. This surge in storage capacity is critical for addressing one of solar’s fundamental limitations: intermittency. In regions like California, where ‘free’ daytime solar has become commonplace, energy storage is already proving its value by stabilizing grid operations and preventing negative pricing [1]. Jenny Chase of BNEF notes, ‘Energy storage is showing that it can arrest the downward pricing trend leading to “free” daytime solar’ [1]. The integration of storage solutions not only enhances the viability of solar but also opens new revenue streams for developers and investors.
Data Centers and EVs: New Frontiers for Solar Demand
While traditional solar markets show signs of saturation, two emerging sectors—data centers and electric vehicles (EVs)—are poised to reignite demand. Data centers, which consumed 501 TWh of electricity globally in 2025, are projected to require 1,114 TWh by 2035, accounting for 3.6% of global electricity demand [1]. Meeting this demand will necessitate an additional 250 GW–450 GW of new solar capacity, presenting a significant opportunity for the solar industry [1]. Similarly, the EV sector is experiencing rapid growth, with Europe reporting a 24% year-on-year increase in EV demand in April 2026 [1]. BNEF’s Net Zero Scenario projects that the global road fleet will require 8,313 TWh of electricity by 2050, a figure 80% higher than the projected demand from data centers [1]. These sectors represent untapped markets for solar, particularly in regions where energy security and decarbonization are prioritized.
Policy and Collaboration: Keys to Sustained Growth
The global solar slowdown underscores the need for innovative policies and cross-sector collaborations to sustain momentum in the energy transition. Governments and industry stakeholders must work together to address challenges such as grid congestion, permitting delays, and financing barriers [1]. In the Netherlands, for example, policies that incentivize energy storage and grid modernization could help unlock the full potential of solar energy [GPT]. Similarly, international collaborations, such as those fostered at the SNEC 2026 conference, can facilitate knowledge sharing and accelerate the adoption of best practices [3]. As the industry undergoes what BNEF describes as ‘soft consolidation,’ the focus must shift toward creating a resilient and adaptable solar ecosystem that can weather market fluctuations and capitalize on new opportunities [3].
Looking Ahead: A Conservative Growth Trajectory
Despite the current slowdown, the long-term outlook for solar remains optimistic. BNEF’s 2050 Net Zero Scenario forecasts that solar will account for ~30% of the global electricity mix, with cumulative capacity reaching 30.8 TW—representing a 900% increase from the current ~3 TW [1]. Gas and coal are projected to contribute ~17% and ~10%, respectively, highlighting solar’s central role in the energy transition [1]. However, achieving this vision will require sustained investment in grid infrastructure, energy storage, and technological innovation. The question facing the industry is not whether solar will rebound, but how quickly it can adapt to new market realities and emerging demand drivers. As Jenny Chase of BNEF puts it, ‘The defining question facing the industry now is clear: what trends will step up to pull solar growth back upward?’ [1].