The US Energy Information Administration (EIA) published on August 9, 2022 that they report electricity costs on a national average have increased 6.1% from 2021. The forecast for 2023 is an additional 2.5% increase from 2022. 2023 forecast is a 13.4% increase from 2020*.
The majority of electric is produced using natural gas and the current price is around all time highs with the potential to go higher due to current geo political events.
So when you do you return on investment for your solar system you might want to factor in the price of electricity continuing to climb higher for the foreseeable future.
*Independent Statistics & Analysis, U.S. Energy Information Administration, eia.gov/outlooks/steo/report/electricity.php