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Clean Trillion

In order to limit global warming to 2°C and avoid the worst effects of climate change, the world needs to invest an additional $44 trillion in clean energy—more than $1 trillion per year for the next 36 years. Ceres is calling this clean energy investment gap the Clean Trillion. Closing this gap will be a tremendous challenge, but it is possible if businesses, investors and policymakers join forces.

In order to limit global warming to 2°C and avoid the worst effects of climate change, the world needs to invest an additional $44 trillion in clean energy—more than $1 trillion per year for the next 36 years.

Ceres is calling this clean energy investment goal the Clean Trillion. Meeting this goal will be a tremendous challenge, but it is possible if businesses, investors and policymakers join forces.

Hear from investor and business leaders about the Clean Trillion in the video below.

Clean Energy Investment Gap

Businesses can help reach the Clean Trillion by investing in clean energy solutions throughout their supply chains. Review Ceres’ corporate sustainability benchmarking report, Roadmap for Sustainability, to check the progress many companies are already making to:

  • Reduce greenhouse gas emissions by 25% by 2020
  • Improve the energy efficiency of operations by at least 50% by 2020
  • Reduce electricity demand by at least 15% by 2020
  • Obtain at least 30% of energy from renewable sources by 2020


Businesses also play a critical role in closing the clean energy investment gap by supporting policies that expand investment in clean energy.


Investors can continue to accelerate the transition to a clean energy economy, helping to reach the Clean Trillion by:


For detailed recommendations related to clean energy investment, download Ceres’ paper Investing in the Clean Trillion.

Total Assests Institutional Investors

Policymakers should level the playing field by adopting policies that accelerate and expand investment in clean energy. Companies and investors should advocate for:

  • Policies that stimulate investment in energy efficiency, renewable energy and clean transportation
  • Policies that put a limit & price on greenhouse gas emissions
  • A new global climate change agreement by 2015


More than 1000 global companies have signed the
Climate Declaration, calling for national action on climate change.

Clean Trillion Downloads: