Persefoni Pro
Carbon accounting is complex and time-intensive. If you're not a sustainability professional, you likely don't even know where to begin.
Many organizations either need to (due to regulation) or want to (for values or stakeholder pressure) calculate their carbon footprint, but the barrier to entry, both in complexity and cost, is too high.
What if we could empower any organization, in any industry, to calculate their carbon footprint?
What if we could make it a simple, guided, step-by-step experience that makes it impossible to get lost?
What if we could eliminate the barriers, technical, financial, and educational, that prevent organizations from taking climate action?
Role
Principal Product Designer
Timeline
3 months
Impact
6,000 orgs using tool
Persefoni’s goal was to lead the carbon accounting market. We had gained traction with our enterprise offering for organizations that:
Had dedicated sustainability teams who understood what they needed
Had the budget to commit to enterprise-level agreements
But a huge segment was being left behind. These were small and mid-sized organizations that needed or wanted to calculate their carbon footprint, but lacked the resources, knowledge, or budget to do so.
Enterprise Offering
Free Tier
Simple and supportive – Designed for users with zero sustainability experience
Accurate and credible – Not just another footprint estimator, but a true, reportable, auditable carbon footprint
Free (to try) – No upfront cost. Users could explore, get value, and upgrade only if and when it made sense for them
Once the journey was shaped, we interviewed potential users for feedback.
This step was critical. We needed signal from real users that this was the right approach.
One of my favorite product design principles came into play here:
A dollar in ideation costs 10 dollars in design and 100 dollars in development.
Validating early helps reduce risk and ensures we are solving the right problem in the right way.
I take notes in a spreadsheet during interviews, then import them into FigJam for affinity mapping.
At Persefoni, we always built high-fidelity designs alongside clickable prototypes. Every major feature was fully navigable from start to finish, with defined micro-interactions. This approach:
Gave engineers a clear reference
Helped us catch UX issues before they got expensive
Let stakeholders interact with the experience instead of just reviewing it
Engineers had been involved early on to stay aligned, but now we needed to turn designs into live software. On this project, I also stepped into a product manager role and wrote tickets for the engineering team.
This turned out to be a huge advantage. I was deeply familiar with the flow and design, so I could write clear and well-scoped tickets. It also helped close the gap between design intent and implementation.
Honestly, one of the best design tools is a well-written Jira ticket.
Persefoni Pro, our free carbon accounting tool, launched in Spring 2024, giving organizations an accessible way to measure and manage their emissions.
Post-launch, we focused on continuous improvement, enhancing features, streamlining the experience, and incorporating user feedback to drive real value.
By Spring 2025, Persefoni Pro had been adopted by over 6,000 organizations, solidifying its role as a go-to solution for businesses starting their sustainability journey.
