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Thembelani Nhlakanipho Nxumalo

@thembelaninhlakaniph

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Energy and sustainability specialist at Fidelity Services Group who built utility reporting across 200+ branches.

South Africa

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At Fidelity Services Group, I built environmental, utilities and resource-reporting processes across a national footprint of 200+ branches. I analysed electricity, water and fuel data, and led a smart-meter installation programme across 28 branches that helped identify billing discrepancies with projected savings of R766,212.79.

I'm developing an energy-technology concept at Ohwr to improve the operational performance and useful life of solar PV, battery-storage and inverter systems through data-driven optimisation. I developed an initial backend architecture using Python, FastAPI, SQLAlchemy and Pydantic, and I'm building deeper capability in BESS and energy optimisation.

Experience

Work history, roles, and key accomplishments

Current

Founder / Energy Optimisation Product Project

Current

Ohwr

Jan 2025 - Present (1 year 10 months)

Developing an energy-technology concept focused on improving operational performance and useful life of solar PV, battery-storage and inverter systems through data-driven optimisation. Defined data requirements and developed initial backend architecture using Python, FastAPI, SQLAlchemy and Pydantic.

Environmental Specialist

Fidelity Services Group

Oct 2022 - Jul 2026 (3 years 9 months)

Built environmental, utilities and resource-reporting processes for a 200+ branch national organisation. Led smart-meter installation, identified billing discrepancies with projected savings of R766,212.79, and supported ESG reporting including GRI and ISSB IFRS S1/S2.

Programme Support Officer

Duzi uMngeni Conservation Trust

Oct 2021 - Oct 2022 (1 year)

Mentored and trained 86 Project Officers, managed a team of 22, and trained 600+ individuals in citizen-science tools. Monitored approximately 200 km of rivers and supported environmental data collection and reporting.