Reality check: Green jobs greenwash?
Who doesn't love a green job? It puts the sustainability into growth. It makes you think you're earning money while saving the planet.
And it gives our politicians a warm glow too. LibDems are offering at least 40,000 by the end of the decade. Labour's offering 60,000.
While Tories and Greens are not putting a number to their hopes and plans, the SNP trumps them all by saying it wants to create 130,000 jobs by 2020, though it sometimes says it only hopes to reach that figure in total.
That may because the reckoning these parties are using starts with the assumption, dated 2009, that Scotland already had 73,000 green and low carbon jobs.
So how realistic is the target?
It depends on a report commissioned by Whitehall's energy department and provided by environmental economic consultants Innovas.
That shows that Scotland is under-performing, despite its obvious strengths in renewable power, with London and the south-east of England, doing far better.
Why? Well, perhaps because the report chooses to define green jobs very broadly.
If you're in the business of waste-water treatment or drive the truck that collects bottles for recycling, then you're already in a green job.
Likewise if you're making an energy-efficient design of window or door. But bear in mind that someone else's inefficient design of window or door is not going to be made, and that could mean jobs lost elsewhere.
There's quite a lot of replacement going on as well as job creation.
More than quarter of these low-carbon and green jobs are in alternative fuels, and that includes nuclear energy - not always seen as green but counted in because it requires relatively low carbon emissions, mostly in construction.
Only around a tenth of the UK total of 880,000, according to Innovas, were in wind energy. And although there's growth potential there, with Scotland one of the parts of the UK that's best placed to get them, jobs growth in that report is not looking quite as spectacular as you might think from the claims made on the hustings.
The growth rates being projected suggest growth of 33,000 green jobs by 2015. Keep that rate up to 2020, and you get more than 40,000.
What that then requires are the skills to fill these roles, and lots of finance - of the private, rather than the Holyrood variety.
It's in raising that capital investment that the biggest obstacle lies to all these campaign green job targets.