Generalized framework for micro gas turbine techno-economic assessment

•Novel State-of-the-Art, standardized framework proposed for MGT techno economic assessment.•Comprehensive technical and economical modelling approach illustrated.•Universally adoptable off-design TEA method proposed and validated using MGTs part-load operations.•Ranking of MGTs based on TEA performance using MCDM-TOPSIS method.•Innovative strategies for stakeholders in making informed investment decisions. The urgent need for sustainable energy solutions in the face of escalating climate change and global warming has propelled the transition towards net-zero emissions. Central to this transition is the evolution of energy generation from fossil fuel-based centralized grids to decentralized microgrids, with a focus on renewable energy sources (RES) like solar PV and wind. However, the inherent intermittency of RES presents challenges that necessitate cost-effective and mature solutions. Micro gas turbines (MGTs) have emerged as promising alternatives, offering fuel flexibility, quick startup times, and low emissions. Despite their potential, the lack of a standardized techno-economic assessment (TEA) framework hampers the widespread adoption and commercial viability of MGTs. This paper addresses this gap by proposing a generalized TEA framework for MGTs, tailored to current energy market dynamics and global business models. The framework integrates technical and economic concepts, facilitating ease of programming and logical progression. Novel methodologies, including part-load fuel flow estimation and MCDM-TOPSIS ranking techniques, enhance the accuracy and applicability of MGT assessments. A case study involving 65 kW, 100 kW, and 200 kW MGT units demonstrates the framework’s effectiveness in evaluating MGT performance and profitability. By providing insights into both technical feasibility and economic viability, the proposed framework serves as a valuable tool for decision-making in energy sector investments. Moreover, it fosters standardized assessments, enabling comparative analysis and informed decision-making amidst evolving energy landscapes. Ultimately, the development of a comprehensive TEA framework for MGTs represents a significant step towards achieving sustainable energy solutions and advancing towards a net-zero future.