Common
questions.

All SilicIndia BESS and ESS products use Lithium Iron Phosphate (LFP / LiFePO₄) prismatic cells — specifically 314 Ah format. LFP is the industry standard for stationary storage: it offers the best cycle life (≥ 6,000 cycles at 100% DoD), no thermal runaway risk at the chemistry level, and the lowest levelised cost of storage over a 15-year asset life.

We offer five standard configurations: SIE-ESS250 (250 kWh outdoor cabinet), SIE-BESS1500 (1.5 MWh), SIE-BESS3000 (3 MWh), SIE-BESS5000 (5 MWh 20-ft container), and SIE-BESS10000 (10 MWh 40-ft container). Custom capacities between 250 kWh and 50 MWh are available for projects requiring non-standard sizing.

Our systems are certified to IEC 62619 (safety requirements for secondary lithium cells in industrial applications), verified by Bureau Veritas. SilicIndia Energies holds MSME/Udyam registration under the Ministry of MSME, Government of India. UL 9540A, IS 16270 (BIS), and ISO 9001:2015 are in process for Phase 1 commissioning in 2026.

Primary use cases: utility-scale peak-shaving and frequency regulation (grid-forming capable), IPP/renewable-plus-storage hybrid projects, C&I behind-the-meter demand charge reduction, and critical-infrastructure backup. Our systems meet IP54 ingress protection and are rated for outdoor installation in Indian climate conditions.

We manufacture from cell intake to commissioned container on a single 17-station automated line at our Mandvi, Surat facility. Cells are sourced from a Tier-1 LFP supplier and IR-tested in-house before entering the line. BMS firmware, EMS software, thermal management, and pack structural design are all developed in-house. We do not resell or repackage imported rack assemblies.

Standard lead time for containerised BESS units (BESS3000–BESS10000) is 14–18 weeks from confirmed purchase order. SIE-ESS250 and BESS1500 cabinets are 10–12 weeks. Lead times may vary based on order volume and site-readiness scheduling.

Yes. All systems include factory acceptance testing (FAT) at Mandvi and site acceptance testing (SAT) with a SilicIndia commissioning engineer on-site. We coordinate with EPC contractors for civil and electrical interface. A 100-cycle break-in and EMS handover are included in the scope.

Standard product warranty: 2 years on all hardware from the date of SAT. Performance warranty: ≥ 80% capacity retention at end of year 10 under standard cycling conditions. Extended warranty and O&M packages are available as part of service agreements.

There is no minimum order quantity for standard products. Single-unit orders are accepted. Volume pricing applies for orders of 3 units or more. Framework agreements for multi-site or multi-year procurement are available.

Use the Request Quote form on our Contact page. Please include project location, required capacity (MWh), use case (C&I / IPP / utility), grid connection type, and target commissioning date. Our team will respond within 2 business days with a preliminary design and indicative pricing.