
One team. One standard. One Accrona.
The same quality, methodology, and rigour in every engagement.

"If I don't understand how your business generates revenue, how you compete, or what keeps your CFO up at night, I have no business advising you on sustainability."
Bjarni Herrera, Founder & CEO

"If I don't understand how your business generates revenue, how you compete, or what keeps your CFO up at night, I have no business advising you on sustainability."
Bjarni Herrera, Founder & CEO

Bjarni Herrera
Founder & CEO and senior advisor
20 years in professional services. Acquired by KPMG and S&P Global. Sustainability and sustainable finance advisory across sectors and governments. Author of Supercharging Sustainability. GARP SCR. Runner and skier.

Karen Torres
Research Analyst
Environmental engineering, sustainability research, and data analysis. Experience at Bosch and TU Dresden in environmental systems. BE Environmental Engineering, Colombian, bilingual in Spanish and German.

Hildur Karen
Director
Legal and corporate finance with 15 years in complex Nordic market transactions. Former Legal Counsel at Íslandsbanki Corporate Finance. CFA ESG Certificate. Golfer.

Associate
Business development and client relationships in sustainability and sustainable finance. Bilingual in German and English. Former professional American football player in Europe.

Karin Gambe
Director
Climate and ESG risk, prudential oversight, and quantitative modelling. 18 years' experience across financial institutions and Big Four. GARP SCR. Mountaineer and cyclist.

Nuno Teófilo
Associate
Stakeholder communications, storytelling, and strategic positioning. Experience across firms and agencies in Portugal, Italy, and Norway. MSc Marketing. Portuguese at heart.
Team
Formerly at

Vision
An economy where sustainability and business are one.

North star
Our clients choose us again.
Mission
We help clients make better business decisions through senior advisors who bridge sustainability and sustainable finance.

North star
Our clients choose us again.
Vision
An economy where sustainability and business are one.
Mission
We help clients make better business decisions through senior advisors who bridge sustainability and sustainable finance.
Our Values
Trust
We keep our word and speak plainly. You get honest advice, not comfortable advice.
Excellence
We examine deeply before we advise. Our work holds up under scrutiny.
Growth
We stay current so our advice stays relevant. Continuous learning is not optional.
Focus
We spend time on what is material to you. No noise, no filler.
Our Values
Trust
We keep our word and speak plainly. You get honest advice, not comfortable advice.
Excellence
We examine deeply before we advise. Our work holds up under scrutiny.
Growth
We stay current so our advice stays relevant. Continuous learning is not optional.
Focus
We spend time on what is material to you. No noise, no filler.
Our Values
Trust
We keep our word and speak plainly. You get honest advice, not comfortable advice.
Excellence
We examine deeply before we advise. Our work holds up under scrutiny.
Growth
We stay current so our advice stays relevant. Continuous learning is not optional.
Focus
We spend time on what is material to you. No noise, no filler.
Careers
We hire people who do what they say they'll do and deliver work that holds up under scrutiny. If that sounds like you, we'd like to hear from you.
Reach out using contact details below.
Open applications
Even when we're not actively hiring, we want to get to know you.
Internships
Real client work from day one, alongside senior advisors.
Transitions
For experienced professionals who want to contribute between chapters.
Open applications
Even when we're not actively hiring, we want to get to know you.
Internships
Real client work from day one, alongside senior advisors.
Transitions
For experienced professionals who want to contribute between chapters.
Careers
We hire people who do what they say they'll do and deliver work that holds up under scrutiny. If that sounds like you, we'd like to hear from you.
Reach out using contact details below.
Careers
We hire people who do what they say they'll do and deliver work that holds up under scrutiny. If that sounds like you, we'd like to hear from you.
Reach out using contact details below.
Open applications
Even when we're not actively hiring, we want to get to know you.
Internships
Real client work from day one, alongside senior advisors.
Transitions
For experienced professionals who want to contribute between chapters.
