• Manuel S M
• Rinu Susan Roy
• Jom Joseph
• Ebin Jose
• Anuraj M Nair

In this paper, we investigate the possibilities of reducing the grid based conventional energy consumption in large buildings through the integration of a microgrid supplemented by renewable energy sources. An educational building, with an average annual consumption of 317.55 MWh was chosen for the study. Based on the daily energy consumption pattern of the building and renewable energy resource potential at the site, a microgrid has been optimally designed for minimizing the Cost of Energy. It could be seen that, 38.8 % of the total energy demand of the building can be met by wind energy, by installing a turbine of 40kW rated capacity, which would contribute 129.3 MWh per annum to the proposed microgrid. This can also reduce the cost of electricity from the current rate of 0.12 $/kWh to 0.107 $/kWh. Sensitivities of the Cost of Energy, renewable energy system capacity and excess renewable energy, on the renewable penetration levels are presented. The sensitivity of the Cost of Energy on different levels of emission reduction through increased renewable penetration is also discussed. The technical feasibility and economic viability of renewable integrated microgrids, in reducing the grid dependency of large buildings, has been established under this study.

Microgrids, Cost of Energy, Life Cycle Emission, Net Present Cost, HOMER, Renewable Energy Fraction.

"Reducing the Grid Dependency of Large Buildings Through Renewable Integrated Microgrids ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 5, page no.44-52, May 2019, Available :http://www.jetir.org/papers/JETIRCV06007.pdf

"Reducing the Grid Dependency of Large Buildings Through Renewable Integrated Microgrids ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 5, page no. pp44-52, May 2019, Available at : http://www.jetir.org/papers/JETIRCV06007.pdf