As electricity costs continue to rise and power reliability becomes a growing concern, many organizations are exploring solar plus battery storage as a long-term energy strategy.

By combining on-site solar generation with battery storage, commercial facilities can reduce utility expenses, improve resilience during outages, and maximize the value of available clean energy financial incentives. As battery technology becomes more affordable and incentive programs continue to expand, solar-plus-storage systems are quickly becoming a key component of modern energy management.

Key Takeaways

Why are businesses investing in solar plus battery storage?

• Solar photovoltaic (PV) systems generate electricity while battery systems store excess energy for later use.
• Battery storage helps reduce peak demand charges and electricity costs.
• Solar-plus-storage systems improve business continuity during outages and grid disruptions.
• Clean energy financial incentives can significantly reduce project costs and accelerate payback periods.
• Commercial battery storage capacity increased by 42% in 2025 as demand for reliable and flexible energy solutions continued to grow.

What Is Solar Plus Battery Storage?

Solar plus battery storage is a system that combines solar photovoltaic (PV) panels with a battery energy storage system (BESS) to generate, store, and deploy electricity when it provides the greatest financial or operational value.

Commercial facilities use solar-plus-storage systems to reduce utility costs, improve resilience, and increase energy independence. Rather than relying solely on the electrical grid, businesses can generate electricity on-site and store excess energy for use when demand or utility costs are highest.

How Does Solar Plus Battery Storage Work?

The process is straightforward.

The stored energy can then be used when:

• Utility electricity rates are at their highest peak.
• Demand charges increase during periods of heavy facility consumption.
• Solar energy production decreases during evening hours or cloudy conditions.
• Grid reliability becomes a concern due to weather events or infrastructure constraints.
• Power outages occur, and critical systems require backup power.

Why Is Battery Storage Growing So Quickly?

Battery storage has evolved from an emerging technology into a critical energy management asset.

Commercial and industrial battery storage capacity grew by 42% in 2025 as organizations sought greater control over energy costs and power reliability. Data centers, manufacturing facilities, healthcare campuses, warehouses, and other energy-intensive operations are increasingly adopting storage solutions to manage growing electricity demands.

The rapid expansion of artificial intelligence and data center infrastructure is also driving demand. Many operators are pairing solar generation with battery storage to secure reliable power while avoiding delays associated with new utility infrastructure.

Industry-wide adoption continues to accelerate. The United States added approximately 57 gigawatt-hours (GWh) of energy storage capacity in 2025, marking the largest year of energy storage deployment in American history. Industry forecasts suggest that an additional 70 GWh could be added in 2026.

Benefits of Solar Plus Battery Storage for Businesses

Lower Energy Costs

Reducing electricity expenses remains one of the primary reasons businesses invest in solar-plus-storage systems.

Solar generation reduces the amount of electricity purchased from the utility, while batteries allow facilities to use stored energy during expensive peak-demand periods. This strategy can reduce both consumption charges and demand charges, which often account for a significant portion of commercial utility bills.

Improved Energy Resilience

Unexpected outages can disrupt operations, impact productivity, and create costly downtime.

Battery storage provides backup power that can keep critical systems operational during utility interruptions. For many organizations, resilience has become just as important as energy savings.

Better Utilization of Solar Energy

Without battery storage, excess solar generation may be exported to the grid when electricity demand is low.

Battery systems allow facilities to store excess generation for later use when electricity is more valuable. This increases solar self-consumption and improves overall project economics.

Protection from Rising Utility Rates

Utility rates continue to increase across many regions of the United States.

Generating and storing electricity on-site gives facility owners greater control over future energy costs while reducing exposure to utility price volatility.

Support for Sustainability Goals

Organizations pursuing sustainability and Environmental, Social, and Governance (ESG) initiatives can use solar-plus-storage systems to reduce carbon emissions, improve energy efficiency, and support long-term corporate sustainability goals.

Because solar energy has no fuel costs and produces electricity without direct emissions, it remains one of the most effective ways to advance sustainability objectives while reducing operating expenses.

Clean Energy Financial Incentives for Solar and Storage Projects

Financial incentives continue to play a major role in accelerating adoption.

Many utilities, state energy organizations, and regional efficiency programs offer solar energy rebates, commercial storage incentives, and other clean energy financial incentives that help offset project costs.

For example, Wisconsin’s Focus on Energy program offers rebates for qualifying commercial solar installations. Eligible non-residential facilities can receive incentives of $600 per kilowatt for qualifying systems, with larger projects eligible for up to $25,000 in additional funding. These solar energy rebates help reduce upfront costs and improve return on investment for commercial PV projects.

Battery storage rebates are also expanding across the country. Efficiency Maine’s Energy Storage Systems Program offers performance-based incentives ranging from $20,000 to $3 million over five years for qualifying commercial battery storage projects. Facilities can earn annual payments based on their ability to reduce electric demand during peak summer grid conditions, creating a strong financial case for energy storage investments.

These examples demonstrate how commercial storage subsidies and renewable energy incentives can substantially lower project costs while improving long-term financial returns.

In many cases, businesses can combine utility incentives, state programs, and federal clean energy tax incentives to maximize savings.

Why Solar and Battery Storage Work Better Together

While solar panels and battery systems can operate independently, they create greater value when deployed together.

Solar generation produces electricity during daylight hours, while battery storage stores excess energy for later use in the day. This combination allows facilities to reduce peak demand, improve resilience, lower operating costs, and maximize renewable energy utilization.

The trend is already reshaping the energy market. In 2025, approximately 20 GWh of new energy storage capacity was installed alongside solar generation projects. As organizations continue searching for cost-effective and reliable energy solutions, solar-plus-storage systems are expected to play an increasingly important role.

Conclusion

Solar plus battery storage provides businesses with a powerful way to lower electricity costs, improve energy resilience, and gain greater control over their energy future. As battery technology continues to advance and incentive programs expand, the financial case for solar-plus-storage projects becomes even stronger.

For organizations exploring solar energy rebates, battery storage rebates, and other available funding opportunities, working with an experienced rebate management partner can help identify eligible programs, maximize incentives, and simplify the path to a successful energy project.