Picture this: over 450 top companies have pledged to run on 100% renewable electricity by 2050 or sooner. That’s a massive 500 TWh a year—enough to power the entire UK. RE100 has sparked real change in boardrooms worldwide. Yet hitting that goal is just the warm-up act for true decarbonisation.
RE100’s Wins and Tough New Rules
RE100 members now get nearly half their power from renewables, with many smashing targets early. But 2025 brought stricter rules: new electricity must come from assets under 15 years old. From 2026, no credits for coal-mixed power. These shifts force firms to chase real grid upgrades through deals like power purchase agreements (PPAs).
Think of it as graduating from easy certificates to projects that truly add new green capacity.
Power Up: Making Electricity Count for Real
Once at 100%, the focus turns to proof: did your buy spark fresh wind farms or solar fields? Firms set milestones—60% by 2030, 90% by 2040—and report yearly via CDP. Their combined pull could unleash 100 GW of new renewables by decade’s end.
It’s not just buying green; it’s building the future grid.
Beyond Lights: Heat, Cooling, and Bigger Scopes
Electricity is Scope 2’s star, but heat and steam often trail due to thin markets. Groups like the Renewable Thermal Collaborative push electrification, geothermal, and hydrogen for factories. For fuels (Scope 1) and supply chains (Scope 3), Science Based Targets guide 1.5°C cuts across the board.
Many RE100 stars next join EV100 for electric fleets or EP100 for efficiency wins.
Your Roadmap to Lasting Change
Blend RE100 into net-zero plans: swap fossil fuels for green hydrogen, nudge suppliers green, and back smart policies like the UK’s Heat Contracts. Verify every step with outsiders to dodge greenwash traps.
Companies that act now don’t just meet pledges—they reshape energy markets.
Sources
- RE100 Explained: Committing to 100% Renewable Energy – CnerG; https://www.cnerg.net/resources/market-guides/what-is-re100
- RE100: How Global Corporations Are Powering the Transition; https://nzero.com/blog/re100-initiative-overview/
- RE100 – Tools of Change; https://toolsofchange.com/en/case-studies/detail/727/
- RE100 Technical Criteria Updates 2025 – Flexidao; https://www.flexidao.com/resources/re100-technical-criteria-update-what-it-means-for-your-business
- RE100 Leadership Report; https://resource-platform.eu/wp-content/uploads/files/statements/RE100_Leadership_report.pdf
- RE100 Technical Criteria Update 2025 LinkedIn; https://www.linkedin.com/pulse/re100-technical-criteria-update-2025-what-companies-need-know-irvac
- Key Learnings from RE100 2023 Report – Ecohz; https://www.ecohz.com/blog/learnings-re100-2023-report
- Renewable Thermal Collaborative; https://www.renewablethermal.org/
- Science Based Targets Standards; https://sciencebasedtargets.org/standards-and-guidance
- REA Heat and Cooling First 100 Days; https://www.r-e-a.net/wp-content/uploads/2024/06/Heat-Cooling-First-100-Days.pdf