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The document details the baseline and new system efficiencies for air source heat pumps (ASHP) and heat pump water heaters (HPWH), the use of NREL ResStock for hourly energy load profiles, and the specific utility rates for electricity, natural gas, and propane applied across California's climate zones.

The document specifies the technical parameters used for modeling the transition from electric resistance heating to heat pumps in the United States. It details rated efficiencies for space and water heating systems, the use of EIA RECS 2020 microdata and NREL ResStock for home archetypes and load profiles, and the methodology for calculating electric volumetric prices based on 2024 EIA residential state-average revenue.

The document details the methodology and assumptions for a comparative analysis of heat pumps versus delivered fuels in US homes. It specifies the use of 2020 EIA RECS microdata for building archetypes, 2024 state-average energy prices, and specific efficiency ratings (HSPF2, SEER2, and UEF) for air source heat pumps (ASHP) and heat pump water heaters (HPWH) across different climate zones. Hourly energy load profiles were sourced from NREL's ResStock, with ASHP performance curves based on TMY3 temperature data and the Northeast Energy Efficiency Partnerships' database.

The document describes a framework for calculating residential utility bills by combining NREL ResStock building load data with electric and gas tariff data from Genability and RateAcuity. It details specific adjustments made to tariffs for Xcel Energy (Minnesota), Pepco (Maryland), Central Maine Power (Maine), and Eversource Energy (Massachusetts) to ensure analytical consistency. The analysis specifically models upgrades to high-efficiency cold-climate air-to-air heat pumps and evaluates the impact of 'electrification-friendly' rate designs on customer costs.

The document provides the technical and financial basis for LCOE ranges for electricity generation technologies. It specifies that all technologies are assumed to be online in 2015, with costs expressed in real 2010 dollars over a 20-year recovery period. The analysis incorporates overnight capital costs, fixed charge rates, O&M costs, and fuel price assumptions, while accounting for federal tax credits, loan guarantees for nuclear power, and future carbon prices.

The report outlines the assumptions used to model transportation emissions reductions by 2030, including fuel economy targets, the adoption of plug-in hybrids, and the deployment of cellulosic ethanol. It describes adjustments made to the AEO 2008 model to reflect more aggressive efficiency standards and the impacts of smart growth policies.