Solar Energy Storage Market Size & Share 2026-2035
Market Size - By Composition (Lead Acid, Lithium-Ion), By Capacity (≤ 50 kW, 51 to 250 kW, 251 to 500 kW, 501 to 1,000 kW, 1,001 to 2,500 kW, 2,501 to 5,000 kW, 5,001 to 10,000 kW, > 10,000 kW), By Installation (On-Grid, Off-Grid), By Application (Residential, Commercial & Industrial, Utility), Growth Forecast. The market forecasts are provided in terms of revenue (USD) & volume (MW).
Report ID: GMI3507
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Published Date: May 2026
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Report Format: PDF
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Authors:
Ankit Gupta, Shubham Chaudhary
Solar Energy Storage Market Size
The solar energy storage market was estimated at USD 86.8 billion in 2025. The market is expected to grow from USD 99.9 billion in 2026 to USD 423.2 billion by 2035, at a CAGR of 17.4%, according to a recent study by Global Market Insights Inc.
Solar Energy Storage Market Key Takeaways
Market Size & Growth
Regional Dominance
Key Market Drivers
Challenges
Opportunity
Key Players
The industry is on a trajectory to grow significantly owing to increasing environmental awareness and stringent regulations to limit emissions. In addition, continuous upgrades and technological developments focused on improving the cost-effectiveness, and efforts to adopt effective energy-saving measures will also positively impact the industry.
Solar energy storage systems is a technology that stores the energy generated by solar power systems. Solar energy storage systems generally use batteries or other energy storage technologies to store excess electricity produced by solar power systems. This energy can subsequently be discharged to meet increased demand or when solar power is not available.
The adoption of rigorous environmental sustainability norms and increasing energy demand are likely to have a positive impact on the growth of the industry. Additionally, continuous technological developments and cost-effective measures are expected to have a positive impact on business growth.
For reference, in 2024, the Edwards & Sanborn Solar and Energy Storage Project in California stands out as a major project of solar energy storage installation. The project, developed by Terra-Gen, integrates a large-scale solar farm with a sophisticated battery energy storage system with a capacity of around 3,287 MWh.
This facility stores energy produced during the day, which can then be used to meet demand in the evening hours when solar output is low but demand is still high. This project demonstrates clearly the benefits of solar energy storage systems in improving grid stability, meeting energy demand during non-generating hours, and meeting the growing environmental sustainability targets, thus confirming the role of such storage systems in future energy systems.
Solar Energy Storage Market Trends
The market is witnessing growth owing to the growing energy demand across various application segments and the emergence of new technologies satisfying end-user demands. Solar energy storage systems especially in off-grid and small-scale units, have become critical due to their cost-effectiveness and reliability and are widely used to store excess solar energy. As the market progresses, there is a clear trend towards the development of enhanced and high-performance technologies and substitutes, impacting the outlook of the industry.
The increasing demand for grid stability and reliable power supply along with favorable policies is set to drive the systems' uptake across the world. Moreover, implementation of global energy policies coupled with the increasing need for distributed energy will positively impact the business dynamics.
For instance, in 2025, Germany hit a major milestone with more than 500,000 new domestic battery storage systems installed with rooftop PV systems, according to Bundesverband Solarwirtschaft. This growth was facilitated by the growing electricity costs for households and the growing awareness of energy security and environmental issues, leading to the adoption of energy-efficient measures. This trend was also driven by favorable government policies and incentives for renewable energy and energy efficiency.
Solar Energy Storage Market Analysis
The 2,501 to 5,000 kW solar energy storage industry size will exceed USD 76 billion by 2035. These measures such as portfolio standards, clean energy schemes, green bonds, and renewable certificates, have been introduced to promote renewable energy systems. Moreover, the growing deployment of battery energy storage (BES) systems, due to cost reduction, is expected to provide further impetus to the energy storage market, such as retrofitting batteries with small-scale photovoltaic systems.
Furthermore, the strong growth in electric vehicles in parallel to the deployment of stationary solar systems will have a positive impact on commercial applications. The increased energy demand in remote regions, cities, and suburbs, along with the upgrade of existing energy infrastructure will drive the industry prospects.
For citation, in 2026, the planned ramp-up of battery manufacturing and energy storage projects by BYD Company demonstrated the increased investment and technological advances in the solar energy storage industry. The company has recently ramped up its battery production to support electric vehicles and stationary energy storage, which will drive cost reductions through supply chain efficiency and material innovations.
U.S. solar energy storage market was valued at USD 23 billion in 2025. The focus of regulators has been on policy, reform and program development and improvement to facilitate the deployment of large-scale solar projects. The schemes such as portfolio standards, clean energy programs, green bonds and renewable certificates have been deployed to foster the uptake of renewable energy in different states. While the regulatory and industry environment indicates the market's significant growth opportunity, the market is currently experiencing slow growth due to ongoing financial constraints.
Increasing energy costs coupled with concerns about resource scarcity and environmental concerns have led to increased adoption of energy efficient technologies in the Asia Pacific. Growing energy demand due to urbanization, population growth and ongoing innovation propels the business scenario.
Regulatory requirements and harmonization policies to enhance energy efficiency will drive the industry landscape. A transition to clean energy and rural electrification programs have further accelerated the industry growth. In addition, a reduction in battery costs offers an added impetus for clean energy penetration, improving the business opportunity.
For illustration, in 2025, the fast-track adoption of off-grid and domestic solar energy storage systems in regions such as India showcased the new trends in the industry. Government-backed programs, including the deployment of rooftop solar, as part of national programs have promoted the use of battery-integrated systems to provide reliable power supply, particularly for regions with poor grid connectivity.
Solar Energy Storage Market Share
The players in the industry are taking up various measures to improve their competitiveness and capacity. These include investments in R&D to develop new battery technologies, enhance energy storage capacity, and prolong battery lifespan. Manufacturers are further working on ramping up production to gain economies of scale and optimize supply chains. Collaborations with renewable energy generators, utilities and governments are also prevalent to enhance market potential and drive innovation. Also, the ongoing technological improvements and increase in spending on research and development to enhance products are likely to propel the growth of the industry.
Solar Energy Storage Market Companies
Major players operating in the solar energy storage industry are:
ABB
Adara Power
Aquion Energy
BAE Batteries
BMW Group
BYD Company
Contemporary Amperex Technology
ENERSYS
Enphase Energy
ESS
FIAMM Energy Technology
Fluence
Honeywell International
Huawei
Innova Renewables
Leclanché SA
LG Electronics
Maxwell Technologies
NextEra Energy
Primus Power
Saft
SAMSUNG
Schneider Electric
Siemens Energy
Sol Systems
Tesla
Toshiba Corporation
V-land International
Market Share of 15.5%
Collective Market Share of 46.5%
Solar Energy Storage Industry News
In January 2026, Fluence was awarded to provide its Gridstack Pro battery energy storage system (BESS) for the Pioneer Clean Energy Center in Yuma County, Arizona. This is a hybrid project of 300 MWdc solar and 1,200 MWh (300 MW / 4 hr.) storage. The hybrid plant is constructed under a long-term tolling agreement with Arizona Public Service (APS) and is scheduled to come into operation in April 2027. Fluence's fully containerized BESS is powered by U.S.-made battery cells and thermal management, delivering dispatchable renewable energy to support peak demand and enhance grid stability in the region.
In December 2025, Tesla finished a 500 MW solar plus 2 GWh battery storage system in California, Kern County. The project comprises 559 Megapack units, paired with a nearby 500 MWac solar farm. Storing solar power during the day and releasing it during peak demand, the system provides clean electricity to about 467,000 homes and reduces CO₂ emissions by more than 1 million metric tons annually. This large-scale hybrid system is a model of combining renewables with storage to improve grid stability and reliability.
The solar energy storage market research report includes in-depth coverage of the industry with estimates & forecast in terms of revenue (USD Million) & volume (MW) from 2022 to 2035, for the following segments:
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Market, By Composition
Lead acid
Lithium-ion
Market, By Capacity
≤ 50 kW
51 to 250 kW
251 to 500 kW
501 to 1,000 kW
1,001 to 2,500 kW
2,501 to 5,000 kW
5,001 to 10,000 kW
> 10,000 kW
Market, By Installation
On-grid
Off-grid
Market, By Application
Residential
Commercial & industrial
Utility
The above information has been provided for the following regions and countries:
North America
U.S.
Canada
Europe
Germany
France
Italy
Spain
UK
Switzerland
Austria
Asia Pacific
China
Japan
India
Australia
South Korea
Middle East & Africa
Saudi Arabia
UAE
South Africa
Latin America
Brazil
Argentina
Research methodology, data sources & validation process
This report draws on a structured research process built around direct industry conversations, proprietary modelling, and rigorous cross-validation and not just desk research.
Our 6-step research process
1. Research design & analyst oversight
At GMI, our research methodology is built on a foundation of human expertise, rigorous validation, and complete transparency. Every insight, trend analysis, and forecast in our reports is developed by experienced analysts who understand the nuances of your market.
Our approach integrates extensive primary research through direct engagement with industry participants and experts, complemented by comprehensive secondary research from verified global sources. We apply quantified impact analysis to deliver dependable forecasts, while maintaining complete traceability from original data sources to final insights.
2. Primary research
Primary research forms the backbone of our methodology, contributing nearly 80% to overall insights. It involves direct engagement with industry participants to ensure accuracy and depth in analysis. Our structured interview program covers regional and global markets, with inputs from C-suite executives, directors, and subject matter experts. These interactions provide strategic, operational, and technical perspectives, enabling well-rounded insights and reliable market forecasts.
3. Data mining & market analysis
Data mining is a key part of our research process, contributing nearly 20% to the overall methodology. It involves analysing market structure, identifying industry trends, and assessing macroeconomic factors through revenue share analysis of major players. Relevant data is collected from both paid and unpaid sources to build a reliable database. This information is then integrated to support primary research and market sizing, with validation from key stakeholders such as distributors, manufacturers, and associations.
4. Market sizing
Our market sizing is built on a bottom-up approach, starting with company revenue data gathered directly through primary interviews, alongside production volume figures from manufacturers and installation or deployment statistics. These inputs are then pieced together across regional markets to arrive at a global estimate that stays grounded in actual industry activity.
5. Forecast model & key assumptions
Every forecast includes explicit documentation of:
✓ Key growth drivers and their assumed impact
✓ Restraining factors and mitigation scenarios
✓ Regulatory assumptions and policy change risk
✓ Technology adoption curve parameter
✓ Macroeconomic assumptions (GDP growth, inflation, currency)
✓ Competitive dynamics and market entry/exit expectations
6. Validation & quality assurance
The final stages involve human validation, where domain experts manually review filtered data to identify nuances and contextual errors that automated systems might miss. This expert review adds a critical layer of quality assurance, ensuring data aligns with research objectives and domain-specific standards.
Our triple-layer validation process ensures maximum data reliability:
✓ Statistical Validation
✓ Expert Validation
✓ Market Reality Check
Trust & credibility
Verified data sources
Trade publications
Security & defense sector journals and trade press
Industry databases
Proprietary and third-party market databases
Regulatory filings
Government procurement records and policy documents
Academic research
University studies and specialist institution reports
Company reports
Annual reports, investor presentations, and filings
Expert interviews
C-suite, procurement leads, and technical specialists
GMI archive
13,000+ published studies across 30+ industry verticals
Trade data
Import/export volumes, HS codes, and customs records
Parameters studied & evaluated
Every data point in this report is validated through primary interviews, true bottom-up modelling, and rigorous cross-checks. Read about our research process →