Founder and Principal Consultant
Julie “Mae”
Gabato
Connecting evidence, operations, and finance to make climate action work.
Mae founded Ledger + Leaf Advisory to help organizations build reliable climate information systems, prepare defensible disclosures, and translate decarbonization goals into financially grounded action.
Work with MaeExperience before founding Ledger + Leaf
30 countries
Sustainability programs led across the Asia-Pacific region.
80+ countries
Reach of emissions-accounting systems Mae developed.
200+ facilities
Sustainability strategy and reporting directed across the Americas.
Meet Mae
More than 15 years at the intersection of climate and business.
Mae’s experience spans corporate sustainability, climate finance, greenhouse gas accounting, climate disclosure, risk management, and implementation. Her work has connected global programs with the systems and day-to-day decisions needed to deliver them.
Her previous roles include positions at Amazon, the World Bank Group and IFC, the U.S. Environmental Protection Agency, Persefoni AI, and DHL.
She brings that perspective to organizations working to strengthen accountability, make informed decisions, and build durable systems for climate action.
The Ledger + Leaf approach
Evidence that holds up. Advice that moves work forward.
A useful engagement leaves your team with stronger information, clear decisions, and a process it can own.
Make the evidence traceable
Document sources, methods, estimates, and limitations so others can understand how a conclusion was reached.
Connect it to the business
Bring reporting, risk, operations, and capital into the same conversation.
Build for continued use
Define owners, review points, and practical next steps that remain useful after the engagement.
A direct working relationship
Principal-led, from scope to handover.
Mae works directly with clients to define the business question, assess the evidence, and turn findings into an actionable plan. Specialist input from counsel, engineers, technology teams, or independent assurance providers can be coordinated within an agreed scope.
Explore the servicesBring your next climate decision into focus.
Talk with Mae about your reporting, data, or decarbonization priorities.