We combine engineering, analytics, and independent commercial assessment to uncover savings, improve reliability, and ensure systems perform as designed.
Make confident decisions with real numbers — not assumptions.
Ensure your systems deliver what you paid for.
Reduce water use, improve thermal efficiency, and cut unnecessary losses.
With a background spanning engineering, manufacturing operations, and business strategy, Brian helps organisations improve efficiency and cut operating costs. He focuses on water, energy, and emissions reduction and is skilled in uncovering value in capital projects. Brian’s unique database of optimisation opportunities gives teams a fast, insight‑rich starting point for performance improvement.
"Turning complexity into clarity, and ideas into impact."
Diarmaid has spent more than 25 years leading engineering and operations teams locally and internationally. He has headed major operations—most notably as General Manager of Newlands Brewery—and held senior technical leadership roles in Europe. Through Holistic Energy Solutions, he now helps businesses cut electricity costs and move toward cleaner, more resilient energy practices.
"Empowering businesses to thrive through energy intelligence."
We help you define, design, and deliver improvements across energy & automation and water & thermal systems—grounded in measurement, financial modelling, and vendor‑neutral comparisons.
We implement sub‑metering and dashboards to track PV generation, storage behaviour, power quality, and consumption. You’ll get clear alerts, performance baselines, and monthly reports so issues are diagnosed, not guessed.
We are technology‑agnostic and compare solutions that fit your context: PV, inverters, batteries, BMS/SCADA, variable speed drives, HVAC/chillers, heat pumps, boilers/steam, heat recovery, water metering and efficiency, and more.
Use the form above or email brian@invint.co.za (Johannesburg) or diarmaid@hesafrica.co.za (Cape Town). We’ll reply within one business day.
