How can we make funds for tackling climate change to be deployed far more effectively?

Over the next few decades, diverse entities and stakeholders will be deploying trillions of dollars towards projects related to climate change mitigation, energy security and environmental sustainability. Given the vast scale and significant diversity of such deployment, effective frameworks and solutions to deploy these optimally will make a dramatic difference to global sustainability. What are the concepts, frameworks and avenues that ensure that these deployments are far more effective and optimal?

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