BESS Supplier Portfolio Comparator

Centralized CAPEX/OPEX comparison · Vienne 70 MW / 280 MWh · SESSA 100 MW / 832 MWh
Executive-summary local version · source-audited 13 Aug 2026 · BYD/EVE updates 20 Aug 2026 · Envision added 24 Aug 2026 · HiTHIUM string v4 commercial audited 28 Aug 2026 · technical performance populated 31 Aug 2026 · Envision AC architecture corrected 01 Sep 2026 · central-power proxy updated 01 Sep 2026 · sortable sections added 03 Sep 2026 · no Cloudflare/D1 dependency.
Source audit · 13 Aug 2026 + BYD/EVE update · 20 Aug 2026 + Envision add-on · 24 Aug 2026 + HiTHIUM string v4 commercial audit · 28 Aug 2026 + technical performance update · 31 Aug 2026 + Envision AC skid/PCS correction · 01 Sep 2026: commercial pricing, quantities, architecture, performance and lifecycle inputs were rechecked against the available supplier documents. BYD Vienne and Envision Vienne were added, the existing EVE Vienne 4h line was updated from the 14-Aug-2026 workbook, and the HiTHIUM string-inverter offer has been replaced by v4 dated 28-Aug-2026, then populated with its technical performance table from the 28-Aug-2026 technical proposal. Supplier-document inconsistencies are explicitly flagged. The legacy SESSA EVE annual performance curve is excluded from lifecycle ranking until the referenced Appendix 1a-7 performance table is provided.
Comparable equipment comparisons exclude central EMS/PPC/SCADA, engineering, FAT/SAT/commissioning, transport/DDP, spares, training and recycling. Mandatory supplier price adjustments directly tied to the equipment purchase may be included and are shown line by line.