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In current study, Damage estimation is carried out using new methodology using parameters such as absorbed energy and degrading stiffness by pushover analysis. A new stiffness-based damage index is developed for each increasing step of pushover analysis, which takes into account the cumulative effects of increasing each lateral load and displacement. Non-cumulative absorbed energy-based damage index is calculated using the pushover curve's first maximal hysteretic cycle. These suggested methods can be utilised to quickly calculate the global damage index for low to medium rise vertical irregular buildings. The proposed two methods are evaluated using three regular and vertical irregular buildings considering various parameters such as varying heights, setback orientations, plastic hinges and monotonic loads. Furthermore, existing deformation and strength-based damage indices are used to calibrate the proposed damage indices. Both proposed damage indices may calculate damage index at any point on the pushover curve, however the damage indices are computed at different performance levels. The research based on damage index showed that two approaches for evaluating damage to irregular buildings are easy to use and accurate, Also, using the results of pushover analysis, structural designers may estimate the global damage index as a performance criterion in short period of time.

The world we live in, is becoming more and more dependent on electrical energy, which, sadly, still heavily relies on outdated techniques involving the burning of fossil fuels. Fortunately, more and more people are accepting the fact that this system simply isn’t sustainable in the longer-run. Even if air pollution wasn’t a huge factor, the shortage of these resources is something that is bound to happen in the nearest future, and it would pose an impassable obstacle towards the future growth of mankind. Hence, importance of renewable energy is such an important trend for the future of mankind. At present, net AC meters are available for measurement of four quadrant energy, which is used at output of both on grid and off grid solar inverter. This meter can measure both, energy fed into the grid and energy utilize from the grid. However Energy generated by solar panel cannot be measured directly. Even in off grid inverter the present net meter cannot measure energy generated by solar panel. In case of DC micro grid, where DC energy is used/ consumed directly by the load, the present net meter cannot be used as they can be used in AC energy measurement only. With the launch and implementation of national energy saving and emission reduction policies in relation to distributed power supply by renewable power generation, the DC energy metering technology will become an inevitable trend, breaking the landscape dominated by AC in the field of electric energy metering. This paper describes introduction, block diagram [1], Hardware and software description for development of dc energy meter.

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