Hanna Hakko
Senior Policy Advisor
Hanna Hakko is E3G’s Senior Policy Advisor based in Helsinki focusing on Japan’s coal phase-out, power sector decarbonisation and energy diplomacy.

Hanna in the media
Hanna focuses especially on Japan’s international role in climate and energy transition, monitoring its energy diplomacy and finance in the Asian region and globally. She has produced analyses on Japan’s public finance to international energy sector, technological approaches in the fossil fuel sector, as well as the overall direction of Japan’s climate and energy policy landscape. Hanna works with a wide range of diplomatic stakeholders, civil society and academia to encourage Japan to play a leading role in the global transition from fossil fuel reliance to a decarbonised energy system. Besides her collaboration with various players in Japan, she advises international partners on Japan’s climate and energy issues.
Before joining E3G in 2020, Hanna worked for nine years in various environmental civil society organisations as a campaigner and project leader. Civil society movements she coordinated have e.g. led to the adoption of the Climate Act in Finland, and to the decision to phase out coal power plants in the capital Helsinki. She has also interned at the research institute Finnish Environment Institute, where she contributed to development of an online climate change data base for the general public, popularising findings from various academic fields. In Japan, Hanna worked on shifting the Japanese private finance from coal to clean, collaborating with private sector stakeholders and civil society alike.
Hanna has previously served as a city councillor in the city council of Tampere, Finland, from 2012 to 2017.
Hanna holds a master’s degree from the University of Tampere, majoring in Regional Studies and Environmental Policy.
Hanna lived in Japan for seven years from 2018 to 2024, and now visits semi-regularly, with her base in Japan located in Yokohama. In her free time she likes to read, study Japanese and play tennis. She holds a rank in iaido, one of the traditional Japanese martial arts.
Hanna focuses especially on Japan’s international role in climate and energy transition, monitoring its energy diplomacy and finance in the Asian region and globally. She has produced analyses on Japan’s public finance to international energy sector, technological approaches in the fossil fuel sector, as well as the overall direction of Japan’s climate and energy policy landscape. Hanna works with a wide range of diplomatic stakeholders, civil society and academia to encourage Japan to play a leading role in the global transition from fossil fuel reliance to a decarbonised energy system. Besides her collaboration with various players in Japan, she advises international partners on Japan’s climate and energy issues.
Before joining E3G in 2020, Hanna worked for nine years in various environmental civil society organisations as a campaigner and project leader. Civil society movements she coordinated have e.g. led to the adoption of the Climate Act in Finland, and to the decision to phase out coal power plants in the capital Helsinki. She has also interned at the research institute Finnish Environment Institute, where she contributed to development of an online climate change data base for the general public, popularising findings from various academic fields. In Japan, Hanna worked on shifting the Japanese private finance from coal to clean, collaborating with private sector stakeholders and civil society alike.
Hanna has previously served as a city councillor in the city council of Tampere, Finland, from 2012 to 2017.
Hanna holds a master’s degree from the University of Tampere, majoring in Regional Studies and Environmental Policy.
Hanna lived in Japan for seven years from 2018 to 2024, and now visits semi-regularly, with her base in Japan located in Yokohama. In her free time she likes to read, study Japanese and play tennis. She holds a rank in iaido, one of the traditional Japanese martial arts.