Increased energy use for adaptation significantly impacts mitigation pathways.

Area of Science:

• Environmental Science
• Energy Systems Analysis
• Climate Change Mitigation and Adaptation

Background:

• Current energy scenarios largely overlook the significant energy demands of climate adaptation measures.
• The feedback loop between climate adaptation strategies and energy systems remains under-quantified.

Purpose of the Study:

• To quantify the impacts of energy-intensive climate adaptation actions on energy investments, costs, greenhouse gas emissions, and air pollution.
• To integrate adaptation-energy feedbacks into climate change mitigation pathways and energy system planning.

Main Methods:

• Modeling the direct energy use changes associated with various climate adaptation actions.
• Analyzing the subsequent effects on power generation capacity, emissions, and economic factors.
• Assessing the implications for global carbon pricing and energy system costs under different climate mitigation scenarios.

Main Results:

• Energy needs for climate adaptation escalate significantly with increasing global temperatures and over time.
• The expansion of power generation capacity to meet adaptation demands results in elevated greenhouse gas emissions, local air pollutants, and energy system costs.
• Near-term increases in power generation capacity are predominantly reliant on fossil fuels.

Conclusions:

• Climate adaptation strategies have substantial, often overlooked, impacts on energy systems and environmental outcomes.
• Incorporating adaptation-energy feedbacks necessitates higher global carbon prices for effective climate mitigation.
• Ambitious mitigation efforts, when considering adaptation benefits, may lead to reduced energy system costs, potentially yielding net economic gains in scenarios limiting warming to well below 2 degrees Celsius.