300 hectares. Two sites. Four interlocking systems.
ISLTREH is structured across 300 hectares in Tumaco, Colombia — four interlocking systems designed to reinforce each other.
01 / Energy
Renewable Energy Complex + Solar SPV
A staged build-out in Tumaco, Colombia: a 15-ha Phase 1 hybrid solar–storage microgrid (~4.2 MWp) displaces diesel for the project and neighbouring communities. A separate, ring-fenced solar SPV scales the remaining 167 ha up to 167 MWp utility-scale solar, with a 15 kV–115 kV step-up substation enabling SSPD grid export and PPA offtake. CAPEX: USD 72–105M (SPV) — independent from the USD 30.6M core stack.
Phase 1: ~4.2 MWp hybrid microgrid (15 ha)
Solar SPV: up to 167 MWp on 167 ha (USD 72–105M)
15 kV–115 kV substation + national grid export PPA
4,200 t/yr CO₂e avoided via diesel displacement
02 / Water
Río Mira Water Treatment Plant
A 3-ha solar-powered river water treatment plant in Tumaco, Colombia supplying potable water to the ecological hotel, the cold-chain hub, and neighbouring communities — in a municipality where less than 60% of households have reliable potable water. Designed with zero-liquid-discharge greywater recycling targeting 80% reuse.
Solar-powered Río Mira intake (3 ha)
80% greywater reuse at the hotel
Potable supply to surrounding communities
Baseline water quality study under Phase 0
03 / Logistics
Local Distribution & Cold-Chain Hub
A 10-ha facility in Bucheli — Tumaco's first formal cold chain — closing the >30% perishable food waste gap that today exists south of Buenaventura. Integrated WMS/RFID digital logistics, multi-tenant warehousing, and last-mile distribution serve regional producers, fisheries and the future Tumaco Blue Port.
10 ha — first formal cold chain south of Buenaventura
WMS / RFID digital logistics platform
Multi-tenant warehousing + last-mile distribution
Designed for integration with the Tumaco Blue Port
04 / Tourism
Ecological Boutique Hotel
A 30-room low-impact boutique resort on 12 ha in Tumaco, Colombia — powered by on-site renewables and the Río Mira water plant. Operated alongside the adjacent 78-ha REDD+ conservation programme (30% of the project area, EU 30×30 aligned), the hotel doubles as a biodiversity and education platform.
30 rooms on 12 ha in Tumaco, Colombia
78 ha REDD+ mangrove & forest conservation
Carbon-neutral operations on renewable supply
Community-linked training and biodiversity research
