There is no denying that the Earth is heating up, that's an ironclad fact. Just look at the glacier retreating of the last 50 years in timelapse and you'll see it before your very eyes. How much of that is due to human activity is unknown, but considering the relationship between CO2 and heat retention (and we've double the amount of CO2 in the atmosphere in the last 150 years), it's not a stretch.

Having said that, the Sun is going through a very long peak season in intensity and activity, more than we've ever recorded before. What's causing it and how much it is contributing to our warming is up for debate.

Even if we're only responsible for a minutae of the Earth's heating, as the sentient species of this planet we have the implicit responsibility to protect it for all other species as well as our own. We hold this planet in escrow for our children, their children and so on. Anything we can do to keep it as pleasant (or habitable) as possible should be done.

I'm sure I read somewhere that Scotlands energy generation is roughly 20-24% renewable from wind and hydro. They're bringing up your national average.