This publication was prepared by IRENA’s Renewable Energy Roadmap (REmap), Policy, Finance and Socio-economics teams. The 1.5°C Scenario including a technology pathway and investment needs, was developed by Dolf Gielen, Ricardo Gorini, Rodrigo Leme and Gayathri Prakash, with significant support and contributions from Nicholas Wagner, Luis Janeiro, Maisarah Abdul Kadir, Sean Collins and Elisa Asmelash. The finance, policy and socio-economic analyses were developed by Rabia Ferroukhi, Diala Hawila, Divyam Nagpal, Costanza Strinati, Ulrike Lehr, and Xavier Garcia Casals. This publication benefited from insights and contributions by Elizabeth Press who also developed the Executive Summary. 

Valuable input, support and comments were provided by IRENA experts: Paul Durrant, Seungwoo Kang, Karan Kochhar, Martina Lyons, Trish Mkutchwa, Carlos Ruiz (end-use and bioenergy), Emanuele Taibi, Herib Blanco , Raul Miranda, Carlos Fernandez (power system transformation and hydrogen), Francisco Boshell, Arina Anise, Elena Ocenic (innovation and technology standards), Roland Roesch, Gabriel Castellanos, Gayathri Nair, Barbara Jinks (grid integration, greening the gas and shipping), Asami Miketa, Pablo Carvajal (power sector investment planning), Michael Taylor (renewable energy cost status and outlook), Simon Benmarraze, Paula Nardone, Josefine Axelsson (Renewable Energy Markets and Technology), Sandra Lozo and Kingsmill Bond (renewable energy finance), Emanuele Bianco (hydrogen policy), Sara Pizzinato (power sector restructuring), Jinlei Feng (end-use policy), Stephanie Weckend and Kelly Tai (community energy and circular economy), Sufyan Diab (targets and NDCs), Michael Renner, Celia García-Baños and Bishal Parajuli (labour markets and socio-economics), Samah Elsayed (education and skills), Anastasia Kefalidou, Kathleen Daniel, Claire Kiss and Waiman Tsang (planning and programme).