This thesis explores how individuals, firms and policymakers make decisions that influence climate-relevant technology uptake and behavioral change. Chapter 1 evaluates a novel lending model in rural Pakistan that combines loans for solar systems with a novel index insurance scheme, which lowers repayments during periods of low electricity production. Using a randomized controlled trial with over 1,500 entrepreneurs, the study finds that the insurance increases solar adoption, reduces electricity spending, and improves welfare. Chapter 2 investigates how Fridays for Future protests affect household behavior in the U.S., showing that only households with young individuals temporarily reduce meat consumption after nearby protests, while others do not. Chapter 3 analyzes municipal subsidy programs for plug-in photovoltaic systems in Germany, demonstrating that subsidies causally boost installations. By exploring the granularity of the programs, this chapter demonstrates that their effectiveness could have been increased by offering higher upfront payments without raising the overall program cost.
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