On the day when Alex Salmond announced that Scottish and Southern Electric has been given permission to build Europe's largest wind farm it emerges that he overstated his case somewhat. The wind farm will in fact generate 456MW of power not the 548MW of power Mr Salmond claimed. That's a 20% error in your favour Mr Salmond. Oops.

Adopted Domain is fully supportive of the wind farm development, but the announcement does highlight how the SNP are spinning renewable energy. It's one thing to talk up and support the Scottish renewables industry. It's another thing altogether to go telling porky pies about it. That road lies public cynicism and distrust. - but then given the SNP support for the climate busting M74 motorway extension project, perhaps we shouldn't be surprised to see the SNP trying to make hay whilst they can, in the hope not many people notice their contradictory environmental policies.

If we are to build a nuclear free, renewables powered economy in Scotland, as the SNP claim to want to do - it's likely we'll need a few more developments of this scale. And the SNP will also need to do a lot more to promote microgeneration, low energy building and sustainable travel before anyone should take their green claims remotely seriously.

However, I  doubt these observations will have the slightest effect on the big  Scottish political event of this week - The Glasgow East byelection. However, it does make me wonder, what else are the SNP 20% wrong on? Perhaps the size of the swing from Labour to them in Glasgow East for starters? Let's see will we?