To be a bit more pessimistic - the competition that's driving out coal isn't just renewables. It's more efficient and cheaper fossil fuels, most notably natural

To be a bit more pessimistic - the competition that's driving out coal isn't just renewables. It's more efficient and cheaper fossil fuels, most notably natural gas. These are way better than coal in carbon emissions, but won't get us nearly low enough unless they are in turn replaced by renewables fairly quickly