72 Climate Comparisons We compare SBSP systems to other baseload renewable electricity production technologies, as well as nuclear power. Wind power without storage is included for comparison as the lowest cost and emissions intensive technology tracked by NREL. GHG emissions comparisons are drawn from NREL’s Lifecycle Assessment Harmonization effort (National Renewable Energy Laboratory, 2023). Table 25. GHG emissions Comparison. Source data from NREL: surveying thousands of publications, NREL documents the range of assessed GHG emissions, denoting low, median, and high impact assessment results for each technology. All units are in gCO2eq./kWh. Technology (gCO2eq./kWh) Low Impact Median Impact High Impact RD1 Baseline 26.58 RD2 Baseline 40.38 Nuclear 5 13 210 Hydropower 4 21 90 Utility-Scale Solar Photovoltaics 25 43 190 Concentrating Solar Power 10 28 90 Onshore Wind 6 13 50 Offshore Wind 6 13 50 Tidal 5 8 12 Geothermal 4 37 230 Natural Gas 350 486 950 Coal 840 1001 1690 Sensitivity Analyses We performed several sensitivity analyses to assess the necessary conditions for commercially viable SBSP systems as compared to 2050 projections for existing renewable electricity production technologies. Parameters that could reasonably be expected to vary with uncertainty were considered; these relate to launch, manufacturing, and solar cell efficiency. After varying individual variables separately, we conclude with a multiple-variable sensitivity analysis which considers
RkJQdWJsaXNoZXIy MTU5NjU0Mg==