Search Climate Insights Directory

The study evaluates four primary technology pathways for Germany's power sector decarbonisation by 2050: 'All Tech.' (inclusive of nuclear and CCS), 'No CCS', 'No Nucl.', and 'No Nucl. No CCS'. The 'All Tech.' scenario is identified as the most competitive, offering the lowest total system costs and electricity prices. The 'No Nucl. No CCS' scenario, which most closely represents current German policy, results in the highest costs, highest electricity price volatility, and greatest reliance on transmission and hydrogen infrastructure. The analysis emphasizes that nuclear power and Carbon Capture and Storage (CCS) significantly enhance economic competitiveness and system resilience. It also explores the role of long-duration energy storage (LDES), finding that 24-hour systems can facilitate solar expansion and reduce reliance on costly hydrogen-fuelled power plants.

The document outlines how data centers can increase electricity demand flexibility by shifting workloads, reducing operations, or using onsite storage. It highlights that without policy changes, data center growth could lead to 25-50 GW of additional fossil generation by 2030. Conversely, curtailing just 0.5 percent of annual electricity use could allow 100 GW of load to be added nationwide without new peak resources. Proposed policy tools include tying tax incentives to demand response participation, enabling faster interconnection for flexible facilities, and implementing utility rates that align costs with system impact.

The document finds that reaching an 85% clean electricity target by 2030 is feasible and reliable for California, even under most simultaneous stress conditions. Analysis indicates that while solar and battery storage are primary drivers, a diverse portfolio including offshore wind and geothermal reduces dependence on imports and gas. Battery storage specifically reduces the 'duck curve' ramping requirements by an average of 42%. While the state can retire nearly a third of its in-state gas fleet under certain conditions, some gas remains necessary for reliability unless replaced by comparable firm clean resources. The study emphasizes that sharing power with the rest of the Western United States is more optimal than a 'go it alone' approach.

The document details the data sources and specific capacity estimates used by RMI for energy efficiency, virtual power plants, grid enhancing technologies, and clean repowering. It highlights a projected 53GW reduction from energy efficiency and 60GW of dispatchable capacity from flexible loads and storage by 2030, while adopting a conservative 20GW estimate for grid enhancing technologies and 14GW for clean repowering via generator replacement.

The document argues that large energy buyers must move beyond basic renewable energy procurement to adopt 'transformative procurement practices' to achieve a zero-carbon grid by 2050. It identifies six key approaches: matching clean energy purchases with the timing of use, incorporating demand flexibility, purchasing dispatchable clean electricity, adopting enabling technologies like energy storage, maximizing emissions reductions, and ensuring an equitable transition.