BESS COLOMBIA - FREE SUMMARY R35 edition, October 27, 2026. Eleven lines: equipment; conversion/control; integration; development/ownership; energy; software/representation; O&M; second life; applications/service; end of life; finance/insurance. OLACDE attributes 15,20 MW operating in 2026 without a reconciled list. Chenche declares testing, without established BESS COD. La Martina has declared operation with BESS power unresolved. These phases are not additive sales. Analysis covers energy contracting, C&I purchasing, autonomy, arbitrage, continuity, warranties, finance and circularity. Twelve Enel tariff pairs fail to cover losses at efficiency up to 95%; this does not invalidate other functions. Includes cases, sources and conditional models, not exhaustive monetary TAM, equivalent installed prices or guaranteed returns. Observations retain their original periods.