About Caelion
A higher vantage point on energy and sustainability.
Our Story
Caelion was founded by energy professionals who saw a gap in the Canadian market: organizations pursuing ambitious energy and sustainability goals needed partners who could see the full picture, not just one piece of it.
Too often, strategy was disconnected from operations. Energy was disconnected from sustainability. Technology was disconnected from the people using it. Caelion was built to bridge those gaps.
The name Caelion is built from two roots: "cael" from the Latin caelum, meaning sky, and "-ion", the scientific suffix for charged particles. Together, it suggests energy from the sky: a nod to clean energy, electrification, and the higher vantage point needed to align policy, capital, technology and implementation into practical solutions.
Today, Caelion supports airports, building owners, utilities, government agencies and institutions across Canada with strategy, energy management, climate resilience, certification readiness and program delivery. We bring expertise from both the provider and the consumer side of the meter, and we combine it with modern technology to help our clients balance energy security, cost and sustainability.
Energy from the sky
A higher vantage point on energy and sustainability: aligning policy, capital, technology and implementation into practical solutions.
Leadership

Todd Ernst
Chief Executive Officer
Todd is an experienced energy and sustainability professional with extensive expertise in industrial and commercial energy programs on both sides of the meter. In his years with CLEAResult and Willis Energy, Todd led the delivery of the IESO's industrial energy conservation programs. As Director, Energy and Environment at the Greater Toronto Airports Authority (GTAA), Todd led a large and diverse energy and sustainability portfolio that encompassed energy management, energy resilience and reliability, transmission and generation assets, and energy export to the IESO grid.
Todd's decarbonization work at the GTAA included implementing low carbon hydrogen fuel infrastructure, renewable diesel, electrification, heat pumps and sustainable aviation fuels, among other technologies. He leads Caelion's strategy, client relationships and technical delivery.
Todd has also worked directly in asset management, finance and risk roles. He holds professional engineering (P.Eng), accounting (CPA), internal audit (CIA), energy measurement and verification (CMVP) and sustainability (ENV SP) designations. His perspective spans the technical and strategic dimensions of energy and sustainability.

Anirudh Challa
Co-Founder and Director
Anirudh is a serial entrepreneur and the founder of Passer, the technology and program delivery company that powers Caelion's operational capabilities. He brings extensive experience in technology platform development, program implementation, delivery operations and program administration within the Canadian energy efficiency sector.
Under Anirudh's leadership, his team has designed, built and administered energy efficiency programs managing over $85 million in incentives and processing more than 9,000 applications with 100% payment accuracy. He provides Caelion's technology backbone and operational expertise.
Our Approach
Clarity Over Complexity
We take complex energy and sustainability challenges and break them into clear, actionable paths. Our deliverables are precise, our communication is direct, and our recommendations are practical.
Accountability Without Exception
Every dollar tracked, every outcome documented, every commitment met. Our clients have direct access to reporting, financials and program data at all times.
Partnership, Not Vendorship
We work with clients, not for them. Their constraints are our constraints. Their success metrics are our success metrics.
Practical Innovation
We bring modern tools and approaches not because they are new, but because they produce better outcomes. Innovation in service of results.