From RenewEconomy more on the NEG modelling :
Energy Security Board chair Dr Kerry Schott has defended the modelling assumptions for the National Energy Guarantee, the controversial new policy idea put forward by the ESB and endorsed by the federal government, saying that it assumed costs at the “low end” for wind and solar.
Schott, in a webinar on Friday outlining the principles of the policy, noted that the cost of wind, solar and battery storage were falling at a “breath-taking” rate, and asserted that the ESB had assumed the “low end” of cost assumptions.
“Every time we look at them they have headed south. It seems to be best to go to the lower end” of the cost assumptions, she said.