Luis Mac Culloch

• Designed and executed sourcing strategies for emerging technologies and new projects, aligned with innovation, sustainability, and cost-reduction goals. • Led a multifunctional team of 13 professionals (3 coordinators, 9 buyers), fostering a high-performance, collaborative, and talent-driven culture. • Managed a portfolio of 200+ active contracts totaling approx. USD 1 billion, ensuring compliance, timely execution, and alignment with financial targets. • Oversaw the entire Procurement chain for operational, construction, and development projects, conducting regular (daily and semi-annual) strategic reviews to ensure alignment with corporate objectives. • Strategically managed ~200 active suppliers, with emphasis on compliance, technical requirements, HSE standards, and continuous performance programs. • Procurement lead for 6.3 GW of operational assets across Wind (3.5 GW), Hydro (1.3 GW), and Solar (1.5 GW) energy sources. • Supported 50 operational and under-construction plants across Brazil’s five regions, adapting logistical and contractual approaches to each local context. • Managed strategic contracts for wind and solar projects under construction (~1 GW), including BoP, BoS, Substation and Transmission Line EPC packages, all delivered on time and on budget. • Played a key role in the economic feasibility of projects in wind, solar, battery storage, and hydro repowering, integrating Procurement into strategic decision-making. • Embedded ESG (Environmental, Social & Governance) criteria into RFPs and sourcing processes, enhancing corporate sustainability and reputation. • Monitored Procurement KPIs monthly, including: new contracts and amendments, lead times, savings generated, supplier performance (SLAs/KPIs), contractual compliance, and risk mitigation.

• Led a 22-member team (5 coordinators, 17 buyers), focused on performance, talent development, and high-delivery culture. • Accountable for procurement strategy covering 8 GW in O&M projects (wind, solar, hydro, thermal, and geothermal) across northern, central, and southern Chile. • Oversaw 17 capital-intensive projects (1.7 GW) valued at ~USD 800 million, from strategic sourcing to risk management and contract execution. • Led innovative technology procurement (e.g., battery storage and green hydrogen ~150MW), focusing on contractual, technical, and financial feasibility. • Managed complex crises involving suppliers, subcontractors, and government agencies, delivering multi-phase action plans ensuring business continuity. • Represented EGP Chile in the Chilean Generator Association's working group, co-developing a market best practices guide for suppliers and contractors. • Developed and implemented a new large-scale solar procurement strategy focused on cost efficiency, risk mitigation, and ESG compliance. • Mentored and prepared internal leaders for strategic roles within the Procurement function.

• Led a 13-member team, executing a structured growth plan with 8 additional positions. • Oversaw the full procurement lifecycle, including planning, supplier evaluation, and performance tracking. • Participated in the development of 3.5 GW in wind and solar projects across Brazil. • Introduced a new negotiation methodology to reduce risks in strategic contracts. • Active member in Compliance and Procurement Planning Committees, ensuring governance and operational efficiency.

• Led major BoP material and service acquisitions for wind and solar energy auction projects. • Responsible for procurement in 8 winning projects between 2014–2016.

- Buyer responsible for the revitalization and modernization of the Inhaúma Shipyard. - Conversion of a VLCC (Very Large Crude Carrier) into the FPSO (Floating Production, Storage and Offloading) P-74 platform.

- Contracting demands for the IT, Communications, and Finance departments. - Delivered end-to-end Supply Chain support for sourcing and contracting activities related to corporate sponsorship projects, including UPP Project and RJX Volleybal team

- Procurement of goods and services for multiple privately held companies within EBX Group, including aviation, Marina da Gloria concession and real estate operations .

- Responsable for the procurement of goods and services in close coordination with technical teams across three Endesa Brasil Group power generation companies: CGTF (thermal power plant), CDSA (hydroelectric plant), and CIEN (energy interconnection/converter operations).