Opening of Proposals - Olive WTP Solar GESC Proj No 124-050 - Schneider Electric

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City of South Bend Public Works Guaranteed Energy Savings Contract Qualifications Life is On Schneider Electric Schneider Electric has conducted a viability review for the potential solar production at the Olive Water Treatment Plant. We first isolated the known limiting factors impacting system size. In review of existing pole mounted transformers, our solar engineering team found the existing utility transformers can potentially allow for up to 22SkW. Their suggestion is to keep the system size under 180kW to not overload the transformer and thus allow for the existing headroom to not interrupt service. This would require a line side tap junction outside the main gear at the GAC Building - due to existing conditions at the panel limiting a load side tap to 29kW. System Sizing System Size kW -DC 316 System Size kW -AC 250 Design Intent Muimum Return on Investment System Type Ground I.dule'."ttage 550 Modules Quantity 574 Inverters Ruantity 5 optimizers Ruantity 0 Baseline Energy vs Solar Production 120,000 100,000 60.01)0 40,000 - - - - - 20,000 — — — — 0 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec — Baseline Energy � Sotar Production of Total Site Energy 402,798 7594 742,888, 65% •3olar Production • Utility Purchased After receiving the electrical energy data, our energy engineering team was able to calculate the estimated system size, based on several factors, to estimate best ROL American Electric Power will require the City of South Bend to interconnect these systems under the Excess Distribution Generation Rider. This rider offers an overproduction credit of $0.03610/kWh. The current rate structure combines the facilities energy and demand to one billed cost. Due to the rate structure, system sizing should be based on minimum demand. Further evaluation of interval data on each meter will allow for an exact target system size. Wells 3and6 1 124 95% 1,133 0 99 MinpeakkW 99 0Ea- Dist Gen 99 1.25 Olive Garages TOO SMALL FOB SOlAB TO BE FEASIBLE!!! 85% 1,133 0 5 MinpeakkW 5 SEa-Dist Gen 0 1.25 Wella4and5 1 62 80% 1,133 0 49 MinpeakkW 49 OEa-Dist Gen 49 1.25 Wellsland2&OFF' 1 893,700 131 80% 1,133 631 106 MinpeakkW 106 OE-ss Dist Gen 106 1.25 It is vital to recognize that this location has 4 actual meters. As such, each meter/account must be evaluated independently rather than grouping them all as one customer/user. Here is our analysis of each account based on the data we have been provided: The annual energy data for meter 611322382 (wells 1, 2, GAC & Office) was input into our system. The estimated system size for this geographical location and rate structure would be approximately 133kW DC to minimize overproduction and maximize ROL This site would be in the southwest section of the site overview. The system would include a fence and landscaping. The interconnection would be located at the north side of GAC building. Directional boring can be used in place of trenching based off site schematics.