A utility offers the following rates to its commercial customers:

The on-peak season includes the months of June through October. The off-season includes the remainder of the months of any year.
The billing demand is defined as the maximum demand as determined above, corrected for the power factor (refer to the power factor clause defined below), provided that no billing demand shall be considered as less than a percentage of the highest on-peak season maximum demand corrected for the power factor previously determined during the 12 months ending with the current month.
The following power factor clause applies to all the utility rate structures.
Power factor clause: The consumer shall at all times use power so that the power factor shall be as close to 100 percent as possible, but when the average power factor as determined by continuous measurement of lagging reactive kilovolt-ampere hours is less than 80 percent, the billing demand shall be determined by multiplying the maximum demand, shown by the demand meter for the billing period, by 80 and dividing the product thus obtained by the actual average power factor expressed in percent.
i. A large manufacturing company is on the level 3 rate schedule. Its peak demand for the previous year is shown below. It found a way to reduce demand in the off-peak season by 100 kW, but the peak season demand will be the same (i.e., the demand in each month of November through May would be reduced by 100 kW). Assuming the company is on the 65 percent ratchet clause specified in the rate schedule, what is the dollar savings? Assume the high month was July of the previous year at 1,150 kW. If the demand reduction of 100 kW occurred in the peak season, what would be the dollar savings (i.e., the demand in June through October would be reduced by 100 kW).
ii. Determine among the three available rate structures the rate level that minimizes the annual utility bill for the manufacturing company before any demand reduction.

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Service Level 1: Customer charge: $500/bill/month Energy charge: $0.025 applicable to all kWh/month Demand charge applicable to all kW/month of billing demand: On-peak season: $350.00 for first 75 kW or less, and $3.75/kW for all additional kW Off-peak season: $210.00 for first 75 kW or less, and $2.50/kW for all additional kW Service Level 2: Customer charge: $200/bill/month Energy charge: $0.027 applicable to all kWh/month Demand charge applicable to all kW/month of billing demand: On-peak season: $400.00 for first 75 kW or less, and $4.50/kW for all additional kW Off-peak season: $250.00 for first 75 kW or less, and $2.90/kW for all additional kW