About
One technical team for the energy project lifecycle.
Sustains Energy is the energy consulting vertical of Sustains.ai. We work where market forecasts, grid physics and site safety meet, from the first price forecast to the final relay setting.
Mission
Help energy leaders make decisions that hold up, on paper and on site.
The global energy system is being re-engineered in real time. Generation mix, market design, asset economics, and grid physics are all moving at once. Decisions made in this environment cannot rely on yesterday's heuristics or opaque vendor models.
We exist to close that gap. We pair classical power-system rigor with modern data tooling and hands-on field testing, and we put our methodology on the page. The result is analysis our clients can take to a regulator, a lender, or a board. And defend.
Principles
How we work.
A short list. We re-read it before every engagement.
Method transparency
Every deliverable names the model and the standard, the inputs, and the assumptions. No black boxes, clients should be able to defend the analysis to a regulator, a lender, or an investment committee.
Audit-grade rigor
Backtests, sensitivity analyses, and out-of-sample validation are non-negotiable. We benchmark forecasts against published indices and document deviations.
Domain over hype
AI is a tool, not a thesis. We use ARIMA where it wins, deep learning where it earns its compute, and classical power-system methods where physics is the answer.
Safe, compliant, reliable
Our reference frame covers both the grid in transition and the facility floor. Every audit and protection study is benchmarked against recognised standards such as ISO 50001, the GHG Protocol and NFPA 70E.
Team
The people behind the analysis.
In consulting, the team is the product. These are the leads on Sustains Energy engagements.
Arjun C Unni
Co-founder & CEO
9+ years in energy analytics, power system studies, portfolio management, and technical research. PhD in Energy Portfolio Management, Asian Institute of Technology. Leads simulation-driven research and analytics for energy optimisation and price forecasting.
Rohith C Unni
Co-founder & Senior Consultant
Energy researcher focused on decarbonisation, sustainability, renewable energy, and policy analysis. Master's in Energy Policy, Planning & Economics, Asian Institute of Technology. Previously a consultant at PwC on energy & sustainability advisory engagements.
Reshma Suresh
Partner · Lead Engineer
10+ years in power systems and energy engineering. Master's in Power System Analysis. Hands-on with MATLAB, DIgSILENT PowerFactory, PyPSA, ETAP, and PSS®E across load-flow studies, grid analysis, simulation, and infrastructure planning.
Nitin
Partner · Head of Sales & Marketing
Renewable energy, capital markets, and business development across Southeast Asia, with experience at both early-stage ventures and listed companies. Drives client engagement, strategic partnerships, and commercial growth within the energy sector.
Aishwarya Raut
Sales & Marketing Lead
Business development, client success, and digital growth across AI, SaaS, and technology-driven businesses. Expertise in B2B relationship management, SEO-driven digital marketing, AI-enabled customer engagement, and commercial strategy.
Kiran Gautham
Software Engineer
Builds the software and analytical tooling behind our forecasting and grid-study work. Python, web development, full-stack workflows.
Sreenidhi Harish
Software Engineer
Builds the software and analytical tools that support our consulting engagements. Interests span web development, Python and software engineering.
Engagement
Want our team on your next decision?
Tell us the question. We’ll tell you who from our team would lead it and what we’d bring.