ITB_26035SH_Addendum_No._1.pdf

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TO: All Proposers FROM: Sheila Hernandez, CPPB, FCCM, Senior Buyer DATE: June 10, 2026 RE: ITB 26-035-SH Substation Batteries, Battery Racks, and Accessories

ADDENDUM #1

Bidders are hereby notified that this addendum shall be made a part of the above-named Request for Proposal and agreement documents. The items listed below are issued to add, modify, and/or clarify the solicitation document and agreement documents. The items shall have the same force and effect as the original bidding and agreement documents, and cost involved shall be included in the bid pricing. Bids, to be submitted, shall confirm with the addition and revision listed herein. Return this sheet with your bid response.

I. QUESTIONS

Q1. When doing the sizing`s we found that we will need to use a larger model to meet the specified sizing and this also makes the footprint larger. Are we able to deviate on the footprint to provide a flooded system? If we cannot deviate on the footprint, we can supply a VRLA (sealed) option, which has a much more condensed footprint, but deviates on many of the specifications that are in reference to flooded type cells.

A1. A multi-tier rack may be provided in lieu of a single tier rack if necessary to meet the required capacity within the existing footprint. The existing space limitations are not flexible. Proposed battery systems must meet the specifications of the solicitation.

Deviations from the specified battery type or requirements will be evaluated by KUA during bid review.

Q2. Do you have previous bid result that you can share?

A2. Yes, KUA will process this request in accordance with public records requirements. Any available records will be provided following review. For future public records requests, please contact Records@kua.com

Q3. Do we need pre-approval for equivalent manufacturers not listed (approved equals)?

A3. No. Equivalent manufacturers not specifically listed may be submitted with the bid for KUA review.

Q4. Who is responsible for installation and commissioning of the batteries?

A4. KUA personnel will perform installation, testing, and commissioning of the batteries.

Q5. Van Meter Substation No.22 LOAD PROFILE / Battery ah size The single picture of the battery shown is a FIAMM M/N SD-15 This battery has A “NOMINAL CAPACITY of 280ah The load profile provided by KUA results in a much larger battery than that shown The preliminary sizing based on the provided LOAD PROFILE results in a significantly larger battery than that which is identified. (i.e. 190ah

P a g e 2 | 3 or larger) We notice there are TWO battery strings required and so… Is the load profile provided intended to use BOTH BATTERY STRINGS’ CAPACITIES to achieve the desired ah load?

A5. Please refer to the revised Exhibit B. The duty cycle requirements for Item 1.1, Van Meter Substation No. 22, have been revised. Bidders shall base battery sizing calculations and proposed battery capacity on the revised duty cycle requirements.

Q6. Van Meter Substation No.22 We notice the requested TEMP FACTOR CORRECTION is to 1.15 In our experience at KUA, these batteries are housed in an climate controlled building, where the TEMP FACTOR CORRECTION would only come into play were the ambient temperatures fall well below 77 degree F. Is this TEMP FACTOR CORRECTION of 1.15 needed and correct?

A6. Confirmed. Bidders shall use a battery cell temperature correction factor of 1.15.

Q7. Cane Island Substation No.13 LOAD PROFILE / Battery ah size The load profile provided by KUA results in a much larger battery than that shown The preliminary sizing based on the provided LOAD PROFILE results in a significantly larger battery than that which is identified. (i.e. 280ah or larger) Based upon our experience, we believe there to be an error in the load profile that was provided.

A7. Please refer to the revised Exhibit B. The duty cycle requirements for Item 2.1, Cane Island Substation No. 13, have been revised. Bidders shall base battery sizing calculations and proposed battery capacity on the revised duty cycle requirements.

Q8. Cane Island Substation No.13We notice the requested TEMP FACTOR CORRECTION is to 1.15 In our experience at KUA, these batteries are housed in an climate controlled building, where the TEMP FACTOR CORRECTION would only come into play were the ambient temperatures fall well below 77 degree F. Is this TEMP FACTOR CORRECTION of 1.15 needed and correct?

A8. Confirmed. Bidders shall use a battery cell temperature correction factor of 1.15.

Q9. If the Bidder represents several different BATTERY OEM SUPPLIERS, are multiple bids allowed? i.e. Hoppecke and / or C&D batteries?

A9. No. Bidders shall submit a single bid. If proposing an alternate manufacturer or equivalent product, it must be clearly identified within the bid and submitted in accordance with the solicitation requirements.

Q10. Is there a preference on the part of KUA as to the BATTERY POST “TYPE”; i.e.

FLUSH TYPE post and/or “2-Hole Extended Post”? As shown in the Bid document with the picture of the existing FIAMM battery string.

A10. KUA's preference is for a flush post battery configuration with terminal posts extended as necessary to provide adequate clearance for battery rack maintenance.

Q11. On basis for capacity calculations (each site), final cell voltage is denoted as 5.25VDC. The end cell should be 1.75VPC. I assume the 5.25VDC final cell voltage is referring to a 6VDC bloc battery with each end cell voltage being 1.75VPC(1.75(x3)=5.25).

A11. Please refer to the revised Exhibit B. The final cell voltage has been corrected to

1.75 volts per cell (VPC) and shall be used for all battery sizing calculations.

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Q12. Is the load profile for Item#2.1 correct? The momentary and continuous loads might be flipped? The battery will be huge if the load profile is correct.

A12. Please refer to the revised Exhibit B. The duty cycle requirements for both battery systems have been revised and shall be used for all battery sizing calculations and bid submissions.

Q13. Lastly, we just wanted to confirm that you want install, service, and all the like included in the quote as well?

A13. No. KUA personnel will perform installation, testing, and commissioning of the batteries.

II. CHANGES TO SCOPE OF WORK

a. REVISED EXHIBIT B – TECHNICAL SPECIFICATIONS AND DATA

SHEET

Exhibit B, Technical Specifications and Data Sheet, has been revised and is attached to this Addendum. The Revised Exhibit B supersedes and replaces the original Exhibit B and shall be used by all bidders when preparing and submitting bids. Bidders are responsible for reviewing the Revised Exhibit B in its entirety.

Revisions include updates to duty cycle requirements, battery sizing criteria, final cell voltage, and other related technical specifications.

Bidder(s) must acknowledge receipt of this addendum by signing this form below and returning it with your bid response.

Acknowledgment is hereby made of Addendum #1 to project ITB 26-035-SH Substation Batteries, Battery Racks, and Accessories.

Bidder Signature Date

Bidder Printed Name Company Name

This addendum is issued to provide additional information, clarification, corrections, additions, deletions and/or to answers questions concerning the above referenced solicitation. All information provided in this addendum is incorporated into the solicitation document as if set forth therein. All other parts of the solicitation have been maintained as originally distributed.

This addendum supersedes any verbal or other instructions given to any proposer qualified to respond pursuant to the requirements set forth in the solicitation document.

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EXHIBIT “B”

TECHNICAL SPECIFICATION AND DATA SHEET

Substation batteries shall be furnished in accordance with the following:

ITEM#1.1:

Location and Quantity Substation Name Quantity Type Van Meter Substation No.22 2 Lead Selenium 3269 N. Poinciana Blvd, Kissimmee, FL 34746

Ratings, Flooded Lead Acid Nominal system voltage: 125 Volt dc System description: 2 wire, ungrounded Minimum ambient temperature : 40° F Quantity of cells: 60 Maximum No. of cells per battery container/block/jar 1 Specific gravity of electrolyte, fully charged, corrected to 77° F 1.215-1.240 Voltage, volts per cell Floating 2.20 Final 1.75 Maximum during equalizing or recharging following discharge 2.33

Basis For Capacity Calculations Minimum 8 Hour Capacity PER IEEE Standard 485 (2020) Design Margin 1.10 Aging Factor 1.25 Battery Cell Temperature Correction Factor 1.15 Ambient Temperature 78 degrees F Final Cell Voltage 1.75

The calculation for the final size will use the following formula to adjust the uncorrected size based on the correction factors and margin:

Uncorrected Size 1.00 * Temp. Corr. 1.15 * Design Marg. 1.10 * Aging Factor 1.25 = 1.59

Duty Cycle:

313 amperes for 1 minute, followed by:

23 amperes for 478 minutes, followed by:

313 amperes for 1 minute.

This order will be for two new banks of batteries and two racks. Minimum size of each battery bank shall be the larger of either 190Ahr or the calculated capacity (provided by the vender with bid) based on the duty cycle.

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ITEM#1.2:

Battery Rack Two new battery racks shall be furnished. The new racks shall be in accordance with the following:

Rack Maximum Length 240 inches Rack Maximum Height* 51 inches *(from the floor to the Top Post of Batteries) Rack Maximum Width: 18 inches Mounting Provide mounting hardware to secure rack to steel wall.

ITEM#2.1:

Location and Quantity Substation Name Quantity Type Cane Island Substation No.13 1 Lead Selenium 6075 Old Tampa Hwy, Davenport, FL 33896

Ratings, Flooded Lead Acid Nominal system voltage: 125 Volt dc System description: 2 wire, ungrounded Minimum ambient temperature : 40° F Quantity of cells: 60 Maximum No. of cells per battery container/block/jar 1 Specific gravity of electrolyte, fully charged, corrected to 77° F 1.215-1.240 Voltage, volts per cell Floating 2.20 Final 1.75 Maximum during equalizing or recharging following discharge 2.33

Basis For Capacity Calculations Minimum 8 Hour Capacity PER IEEE Standard 485 (2020) Design Margin 1.10 Aging Factor 1.25 Battery Cell Temperature Correction Factor 1.15 Ambient Temperature 78 degrees F Final Cell Voltage 1.75

The calculation for the final size will use the following formula to adjust the uncorrected size based on the correction factors and margin:

Uncorrected Size 1.00 * Temp. Corr. 1.15 * Design Marg. 1.10 * Aging Factor 1.25 = 1.59

Duty Cycle:

63.16 amperes for 1 minute, followed by:

18.76 amperes for 478 minutes, followed by:

63.16 amperes for 1 minute.

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This order will be for one new bank of batteries and one rack. Minimum size of the battery bank shall be the larger of either 280Ahr or the calculated capacity (provided by the vender with bid) based on the duty cycle.

ITEM#2.2:

Battery Rack One new battery rack shall be furnished. The new rack shall be in accordance with the following:

Rack Maximum Length 250 inches Rack Maximum Height* 26 inches *(from the floor to the Top Post of Batteries) Rack Maximum Width: 32 inches Mounting Floor Mount to match existing.