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The global climate change creates a dire need to mitigate greenhouse gas(GHG) emissions from thermal generation resources (TGRs). While microgrids areinstrumental in enabling the deeper penetration of renewable resources, theshort-term planning of microgrids needs to explicitly assess the full range ofimpact of GHG emissions. To this end, we propose a novel unit commitment (UC)approach, which enables the representation of GHG emissions from TGRs, thespecification of GHG emission constraints, and the ex-ante evaluation of carbontax payment with all other costs and benefits. We quantify the relative meritsof the proposed approach vis-\`a-vis the classical UC approach viarepresentative studies. The results indicate that the proposed UC approachyields lower costs than does the classical UC approach and achieves a greaterreduction in costs as carbon tax rate increases. Further, increasing carbon taxrates can markedly disincentivize TGR generation under the proposed approach.

Quantification of the Impact of GHG Emissions on Unit Commitment in Microgrids