YOUR report that Mackay Consultants claim the Scottish Government s target  of generating 100% of Scotland s electricity from renewable sources by 2020 is unrealistic and unachievable. This is simply not the case ( Experts warn 100% green energy plan is unrealistic , The Herald, June 10).  a recent report from one of the world s leading energy consultants, GL Garrad Hassan, shows that Scotland s renewable electricity generation can grow to comfortably exceed our electricity needs, and that the Scottish Government s target of 100% renewables by 2020 is completely and relatively easily achievable.  In fact, Scotland could phase out all fossil fuel and nuclear power by 2030, maintain a secure electricity supply, and have renewables providing 185% of Sco