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3.0 SUMMARY OF PROPOSED LOADING CONDITIONS When calculating the electrical load of a development two variables are evaluated, the total connected load and the diversified load. The total connected load of the proposed building represents the amount of electricity being consumed when all devices within the building are connected and drawing power at the same time. The total connected load scenario is the maximum value and may not represent realistic conditions, therefore the diversified load should also be analyzed. The diversified load is an estimate of the expected electric consumption during peak hours. The existing building is currently served from the 12.5kV line, however electric consumption for the building has not been provided and cannot be estimated. As a conservative approach the capacity evaluation will consider the total area of development as a new load and not as a net increase from the existing load of the building. For the basis of this analysis, this estimated load will be the diversified load which is the one used to determine potential electric system upgrades. The table below summarizes the estimated load and the information considered to calculate these. Refer to Appendix C for detailed calculations of the estimated loading. Table 2. Proposed Loads Parameters Quantities New Building 50,100 Total Interior Existing Building 25,703 Gross Area (sq-ft) TOTAL 75,803 Elevator 0 EV Charging Units 5 Estimated Load (kW) 1,199 Estimated Load (MVA) 1.20 4.0 GRID CAPACITY EVALUATION Based on the proposed diversified load, the new West Seneca project will increase the total peak load of the existing circuit to 6.91MVA. This additional load will increase the peak percentage rating of the existing conditions to 56.1%. Refer to Appendix D for detailed calculations. Based on experience, if the total peak percentage of the circuit is less than 90% the development can be serviced without any upgrades, this will be considered a GREEN condition. If the total peak percentage of the circuit post development is between 90% and 100% minor upgrades may be required, such as increasing conductor size, replacing equipment, increasing the size of service transformers, etc. This will be considered a YELLOW condition. If the total peak percentage of the circuit post development exceeds 100% then major infrastructure upgrades may be required, such as a new circuit design or substation upgrades. This will be considered a RED condition. The West Seneca project is in a GREEN condition, see chart below. -2- Utility Grid Capacity Evaluation GCE West Seneca LaBella Project No. 2243432 Page 31 of 110