Greenhouse Gas Dashboard is a web tool that integrates several carbon pollution-monitoring requirements. Performance Engineering is a process of aiming to improve operation efficiency above pure income from generation. Greenhouse Gas Dashboard allows performance engineers; managers and employees to easily enter, monitor and report power plant emissions. Coal fired and Gas fired power stations are supported by Dashboard in conjunction with SentientSystem resource servers. Researching Australian and International standards on carbon reduction and energy efficiency, common components were extracted that are used in the dashboard. Uncertainty analysis is conducted on the multiple pillar calculation method to lower and verify error margins. Once implemented in an excel spreadsheet with test data, the final prototype has been developed into a web server and hence accessed as a web tool. This prototype will then be integrated into the SentientSystemTM owned by Synergetic Engineering.