Not really. Offshore wind only production electricity 5% more of the time than onshore wind (see the capacity factors here: https://www.eia.gov/forecasts/aeo/pd

Not really. Offshore wind only production electricity 5% more of the time than onshore wind (see the capacity factors here: https://www.eia.gov/forecasts/aeo/pdf/electricity_generation.pdf https://www.eia.gov/forecasts/aeo/pdf/electricity_generation...) Offshore only slightly mitigates the problems with wind--ie. the unreliability. You still need a grid to balance supply and demand with wind.