There appears to be no gameplay effect, but it looks weird in my save. It says 250k/10.9MW (+4248%). The turbine might be also used in Pelagos though (it's in the chain of mods displayed on the tooltip) so maybe that's what's causing it.

Thank you for the report. This is a UI side effect of solar panels.

Solar panels give power as a proportion of the default value of the given surface condition. In this case, Rubia has 300 km/hr wind speed, with the default being 6.9 km/hr. As the relevant part of the solar panel UI cannot be modified, the only way to address this is to set the default wind speed to 300 km/hr, and manually change every surface to 300 km/hr. The issue here is that if any surface escapes this modification, then it will inadvertently have other Rubia logic applied to it (eg no logi chests etc). We deemed the risk to be too great, so we chose not to fix this.