Battery energy storage solutions for IPPs and developers FlexGen gives independent power producers (IPPs) and project developers the software performance, supply chain depth, and bankability credentials to maximize returns throughout the entire battery energy storage system (BESS) lifecycle. Talk to an expert Revenue Optimization Across Markets Stack revenue streams with stronger dispatch decisions Build a battery energy storage system that can intelligently dispatch against multiple revenue streams including energy arbitrage, ancillary services, and capacity payments —adapting in real time as market conditions change. Frequency regulation and spinning reserve dispatch Energy arbitrage and peak demand management Multi-market, multi-site portfolio optimization Power Quality & Ride-Through Hold steady through grid events. Protect compliance posture. Grid voltage dips and frequency excursions can trigger forced outages, penalty provisions, and compliance violations. Each of these can affect your project’s financial profile. FlexGen’s grid-forming power conversion and low-voltage ride-through capabilities keep your asset online through short-duration disturbances, meeting evolving ISO and utility requirements. Grid-forming power conversion Low-voltage ride-through (LVRT) Grid resynchronization Transient disturbance absorption Supply Chain Resilience Stay adaptable through supply and market changes Avoid risk from hardware concentration: a single configuration dependency can threaten your schedule, your budget, or your tax credit position. FlexGen's software-forward model means HybridOS™ is adaptable across every commercial energy storage project. From a proven global supply network, we match the right equipment to your use case, keeping your hardware adaptable as policy and market conditions evolve. 80+ validated battery and PCS configurations Global supply chain with full ITC compliance and traceability Risk mitigation across tariff and FEOC exposure One-Touch Commissioning™ Long-Term Service. Peak Performance. Operational Certainty. Ensure accountability, from COD through exit Your projects need to perform across a 20+ year asset life, through ownership transfers, market changes, and evolving grid requirements. An LTSA with FlexGen bundles software, remote operations, and field services under a single lifecycle management agreement. Site availability and performance guarantees 24/7 remote ops with real-time dashboards and digital twin benchmarking Predictive, preventative, and corrective maintenance 150+ field technicians with regional coverage across a global footprint HybridOS™: the EMS built for grid-scale operations Lenders, tax equity investors, and offtakers want performance certainty. HybridOS™ delivers the uptime guarantees, audit-ready monitoring, and revenue stack optimization that underpin a bankable project — from financial close through end of asset life. Learn more about HybridOS Learn more about Flexgen in action Every kilowatt counts: Optimizing Hybrid Power Plants with a Master Plant Controller (MPC) Co-located solar and storage adds complexity. Uncover how HybridOS™ reduces integration risk and maximizes generation and value. HybridOS PPC Navigate FEOC compliant battery supply FEOC rules are changing how energy storage projects are planned and contracted. Learn how battery storage supply chains are evolving and how FlexGen’s global supply chain specialists can help developers balance risk. Read the blog 17 years of experience across energy markets 200+ Projects completed. Serving customers with unique needs including developers, IPPs, EPCs, utilities, munis, co-ops, data centers and more. 10+ Countries with active and contracted deployments. FlexGen supports a variety of energy projects across all 10 U.S. markets and internationally. 13 million Hours of runtime. HybridOS’ single codebase is built off and improves from the cumulative experiences of 200+ global projects and 80+ equipment configurations. 25+ GWh completed and under contract. That’s enough storage to power approximately 5 million homes for 4 hours. Get in touch Ready to build a stronger investment case? The right lifecycle partner closes faster, performs longer, and hands off cleaner. Talk to an expert Frequently Asked Questions What markets does FlexGen operate in? FlexGen has completed projects across all 10 U.S. energy markets and internationally, with deep integration experience in ERCOT, PJM, CAISO, MISO, and SPP. How does HybridOS™ handle multi-site fleet management? HybridOS™ is designed for both single-site and multi-site fleet operations, giving IPPs with assets across multiple markets a unified view and dispatch capability from a single platform. Does the 98% availability guarantee support project financing? Yes. FlexGen’s availability guarantees and warranty structure are designed to satisfy lender and tax equity requirements. Audit-ready monitoring and reporting give investors the performance visibility they need. What does “software-forward” mean for supply chain flexibility? HybridOS™ is the constant in every FlexGen project. Because our software is validated across 80+ battery and PCS configurations, you’re not locked into a single OEM, and you can adapt as tariff, FEOC, and raw material conditions shift without restarting the software integration process. Can FlexGen support a project I plan to sell? Yes. FlexGen regularly supports early-stage developers who intend to transfer the asset. Experts help structure performance documentation, commissioning records, and LTSA terms that make the project attractive to the next investor. Does FlexGen provide long-term service agreements? Yes. FlexGen bundles software, LTSA, and field services under a single agreement, eliminating the multi-vendor complexity that creates accountability gaps on long-duration assets. What cybersecurity certifications does FlexGen hold? FlexGen holds ISO 27001:2022 and ISO 27001:2013 certifications and has completed a NIS 2 Directive assessment. HybridOS™ is US-built, with security-first architecture designed for critical infrastructure environments. For the full certificate stack, visit trust.flexgen.com.
Every kilowatt counts: Optimizing Hybrid Power Plants with a Master Plant Controller (MPC) Co-located solar and storage adds complexity. Uncover how HybridOS™ reduces integration risk and maximizes generation and value. HybridOS PPC
Navigate FEOC compliant battery supply FEOC rules are changing how energy storage projects are planned and contracted. Learn how battery storage supply chains are evolving and how FlexGen’s global supply chain specialists can help developers balance risk. Read the blog
