Three main ways. First, energy arbitrage: charge during off-peak hours when electricity is cheap and discharge during expensive peak hours. Second, peak shaving: discharge during high-consumption periods to reduce maximum demand and lower demand charges. Third, solar integration: store excess solar your facility can't use immediately and discharge it later, increasing self-sufficiency and reducing grid purchases.
We can support your battery project at any point in the process: system sizing and modeling, system design, battery procurement, EMS, installation and commissioning, O&M, warranty and more. We also provide complete service from conceptual design to site commissioning — a true turnkey package.
It varies with electricity prices, consumption patterns, application type and available incentives. In our experience, ROI typically ranges from three to six years when incentives and depreciation are factored in. Sites with high demand charges often see shorter payback, and solar-plus-storage projects generally outperform standalone storage. Many customers also value the backup and resilience benefits beyond pure ROI.
In several ways: storing energy during low-demand periods and discharging during peaks, peak shaving, maximizing renewable self-consumption, smarter energy management, improved grid stability, a smaller carbon footprint and lower energy costs overall.
Turnkey systems, integrated cloud-based controls, high safety standards, string-inverter architecture and environmental sustainability across all of our solutions. We also maintain strong partnerships with tier-one LFP battery suppliers and third-party software providers to ensure an optimal solution for every project.
The optimal size depends on the return-on-investment target and the space available for the equipment. We use modeling software that takes a full year of your facility's load profile and calculates savings across different system sizes. Space, clearance requirements and local codes are evaluated carefully — especially in urban projects. Share your electricity usage data with us and we'll propose a PV + BESS sizing with strong ROI.
Yes. Our systems are designed for off-grid use. Additional equipment such as an Automatic Transfer Switch (ATS) and critical-load panels may be required. To coordinate other generation sources off-grid, we recommend our microgrid controller add-on or a compatible third-party controller.
Yes. Our systems integrate with existing PV through AC coupling at standard voltages (480Vac or 208Vac as needed). Our EMS treats solar generation and load consumption as a net load in its control logic. For hybrid solutions, our M90 outdoor cabinets can be equipped with a hybrid inverter for DC coupling, supporting up to three DC inputs.
No. Every Marwell Solar system ships with our built-in Energy Management System. If you prefer, you can still use your own EMS provider for advanced features — our EMS offers full compatibility with mainstream third-party systems.
Yes — a variety of programs support the financial viability of energy storage, including self-generation incentive programs, investment tax credits, accelerated depreciation schemes, federal and state grants, and utility-specific programs. Availability depends on your country and region; contact us and we'll help you identify what applies to your project.
Still Have Questions?
Our engineering team is happy to walk you through the details of your project.