Local governments, putting IT out to tender, should describe the VALUE of each feature. EG can work in local dialect (Exxx), source code is openly available (Exxx), we can modify and rebuild (Exxx), nearby support teams are familiar with and can do source mods (Exxx). The statement "word processor must be open source" might not match TPP.
Neither are solar or wind farms, if you count everything that went into their construction. None of the three technologies have enough CO2 emissions to worry about, though.
90-140g/kWh sounds like a lot when 'carbon free' is also being bandied about. Nei states c02 emissions are 4-50g for the entire lifecycle,including construction mining fuel and decommssioning. Only hydro electric is lower.
That link says 2 to 59 grams too. Apparently the range is very high depending on how the extraction works, and all sorts of factors. Cement and steel for example have very different behaviours for emitting co2. Maybe the steel was melted by wind farm electricity for example.
But anyway, even at the high end of the estimates, that is still way lower than coal.
