[2] Rooftop mounted systems are small compared to utility-scale solar ground-mounted photovoltaic power stations with capacities in the megawatt range, hence being a form of distributed generation.

[6] The urban environment provides a large amount of empty rooftop spaces and can inherently avoid the potential land use and environmental concerns.

[9] Sophisticated models can even determine shading losses over large areas for PV deployment at the municipal level.

Customers could pay for their solar panels over a span of years, and get help with payments from credits from net metering programs.

"Based on the findings of the study, GTM researchers estimate that the four solar markets include more than 100,000 installations at low-income properties.

"[15] A report released in June 2018 by the Consumer Energy Alliance that analyzed U.S. solar incentives, showed that a combination of federal, state and local incentives, along with the declining net cost of installing PV systems, has caused a greater usage of rooftop solar across the nation.

According to Daily Energy Insider, "In 2016, residential solar PV capacity grew 20 percent over the prior year, the report said.

"[16] In fact, in eight states the group studied, the total government incentives for installing a rooftop solar PV system actually exceeded the cost of doing so.

[16] In 2019, the national average cost in the United States, after tax credits, for a 6 kW residential system was $2.99/W, with a typical range of $2.58 to $3.38.

It has also increased the ability for localized production and embedded generation reducing transmission losses through power lines.

[2] For consumers, a solar PV system can help them reduce their reliance on fossil fuels by using the sun’s free energy to produce electricity that they can use in their home.

Solar panel installers would have to come out twice to do the uninstall and re-install at a later date when the roof is finished, and their labor is typically more expensive than asphalt shingle roofers pay rate.