  Net-zero emission policies, coupled with declining costs of renewables,
battery storage, and electric vehicles, require both direct and indirect
electrification (such as green hydrogen) of the energy infrastructure to
address climate change impacts, improve resilience, and lower energy expenses.
In this paper, a comprehensive techno-economic analysis was performed that
integrated net-zero energy buildings within the context of Florida energy
transition by the year 2050. The analysis compares the monthly cost savings of
owning photovoltaic (PV) on the roof, battery storage, and Electric Vehicle
(EV) to the cost of buying electricity from the grid for both existing and
newly built Orlando homes. The impact of income tax credits (ITC) and energy
efficiency improvements on monthly savings was taken into account. The
levelized cost of electricity for residential PV and PV + battery systems was
determined and extended to provide a cost equivalent to gasoline for an average
EV. Rooftop solar fueling an EV for 10,000 miles saves \$100 per month over
purchasing gasoline. Today, Florida residents can save on their monthly costs
of electricity and gasoline if they have both PV on their roof and a battery
system (sized for average daily residence load), and benefit from the federal
ITC. Florida residents can cost-effectively transition to their own solar,
battery storage, and electric vehicle to home systems. Allowing utility-scale
solar to be used for on-site EV fast-charging and hydrogen production through
electrolysis for fuel cell vehicles or blending with natural gas, minimizing
the need for electricity transmission and distribution costs across the power
grids.
