Knowledge Tree
variable renewables
Facts (11)
Sources
Impact of carbon dioxide removal technologies on deep ... - Nature nature.com Jun 17, 2021 5 facts
claimThe REGEN model includes a reserve requirement that firm capacity, excluding variable renewables, must exceed peak load in each region to ensure robustness against extended wind and solar droughts.
perspectiveSome analysts suggest that current trends are sufficient to make 100% renewable energy systems the least-cost option, but scenarios indicate that even with optimistic cost assumptions, this equilibrium is not necessarily achieved despite variable renewables likely comprising large shares of the power sector mix.
claimThe investment and operational dynamics of Bioenergy with Carbon Capture and Storage (BECCS) and Direct Air Capture (DAC) are less influenced by market fluctuations from variable renewables compared to other resources because they represent small components of regional power systems.
claimDirect Air Capture (DAC) utilization rates in the study scenarios tend to be close to 8000 hours per year, which contradicts the speculation that DAC can be used to integrate variable renewables by operating only during periods of curtailed power.
claimThe economic incentives for Direct Air Capture (DAC) investment do not align with operational profiles that would use DAC to integrate variable renewables by absorbing excess power during high-output periods.
Clean Energy Solutions Must Include Nuclear | ClearPath clearpath.org 3 facts
referenceA modeling study of a Texas-like power system indicates that the optimal share of variable renewables decreases when decarbonization targets exceed 80%, even in geographic regions favorable to wind and solar with long-duration energy storage available.
claimA power system that pairs dispatchable nuclear power with variable renewables can achieve lower carbon emissions than a system that relies on other complementary sources for wind and solar.
claimVariable renewables create grid management challenges because they are sometimes unavailable and prone to generating excess supply when weather conditions are favorable, which can increase system costs and depress wholesale electricity prices.
Sustainable Energy Transition for Renewable and Low Carbon Grid ... frontiersin.org Mar 23, 2022 2 facts
claimA sustainable electricity transition requires the integration of variable renewables, low carbon nuclear power, electrification of transportation and industrial processes, improved energy conversion efficiency, efficient energy use technologies, and the electrification of thermal energy applications.
claimSustainable energy transition strategies include the electrification of thermal applications and households, the implementation of smart grids, energy storage for variable renewables, carbon capture and sequestration, cogeneration, and energy efficiency measures to limit consumption and wastage.
Congressional testimony of Bob Perciasepe on advanced nuclear ... c2es.org Jun 4, 2019 1 fact
claimExcess generation from nuclear power and variable renewables can be used to produce hydrogen for long-term energy storage, which can then serve as fuel for power plants or vehicles.