Finding the generation mix with the lowest total system cost for deep levels of decarbonisation is critical for electricity consumers and taxpayers, who together need to cover the costs of the entire electricity system. MEGS is an electricity system scenario tool designed to explore options to approach the optimal mix for a particular decarbonisation target. A future system must also maintain system security and “keep the lights on”. To ensure this, MEGS also models grid services, such as firm capacity, inertia and frequency response, ensuring that there are sufficient volumes of these balancing mechanisms available to the grid operator. MEGS has been validated against outturn generation data for the Australian National Electricity Market and has been used to explore the lowest cost frontier at high levels of decarbonisation.

为深度脱碳找到总系统成本最低的发电组合对于电力消费者和纳税人来说至关重要，他们共同需要支付整个电力系统的成本。MEGS 是一种电力系统情景工具，旨在探索接近特定脱碳目标的最佳组合的选项。未来的系统还必须保持系统安全并“保持正常运行”。为确保这一点，MEGS 还对电网服务进行建模，例如固定容量、惯性和频率响应，以确保电网运营商可以使用足够数量的这些平衡机制。MEGS 已针对澳大利亚国家电力市场的产出数据进行了验证，并已被用于探索高度脱碳的最低成本前沿。