Duke Energy Calculator

[Josette Werst]

Headquarteredin Charlotte, N.C., Duke Energy is a Fortune 250 company traded on the New York Stock Exchange under the symbol DUK. More information about the company is available at: www.duke-energy.com.

To help customers plan and manage their light displays, Duke Energy offers a holiday lighting energy calculator that estimates holiday lighting costs. Estimate your costs before decorating and incorporate efficient, budget-friendly lighting options.

Users can identify the type of lights, the number of 100-bulb strands and how many hours the lights will be used per day to estimate the energy cost per day and per month. Based on their lighting selections, customers can receive energy-efficient tips and options.

By comparison, six 100-bulb sets of similarly styled light-emitting diode (LED) bulbs would increase a monthly power bill by only about $5. Using six 100-bulb sets of mini-LED bulbs would increase a monthly power bill by only 72 cents.

Duke Energy (NYSE: DUK), a Fortune 150 company headquartered in Charlotte, N.C., is one of the largest energy holding companies in the U.S. It employs 30,000 people and has an electric generating capacity of 51,000 megawatts through its regulated utilities, and 3,000 megawatts through its nonregulated Duke Energy Renewables unit.

See solar on your home! Our solar calculator uses your home address, the info you provide, and LIDAR satellite technology to give you an instant ballpark estimate of how much you could save by going solar.

Our solar designers will work with you to maximize your electric bill savings while meeting your energy budget and can walk through how to take advantage of solar incentives available in North Carolina.

Question: Section VII (B) 1 of the Draft RFP lays out market participant requirements that mostly but do not fully align with Asset Transfer requirements, stating "in the case of PPA and Utility Ownership Track Proposals, [MPs] have completed or directly managed the completion of the development, engineering, equipment procurement, and construction of >50 MW or 3x the nameplate capacity of the Proposal, whichever is greater, of solar facilities, including at least one project of comparable size to the proposed facility within the United States or Canada."Is a market participant that can meet all bid and eligibility requirements with the exception of previously completing EPC requirements eligible to advance an Asset Acquisition proposal for as Asset Transfer bid without EPC? Is the text in Section VII (B) 1 evaluated on a spectrum relative to each bid submitted, or is it an absolute requirement for all market participants?

Answer: Design changes should be submitted to the Renewable Integration team (Mark.M...@duke-energy.com) and to the RFP Manager (DukeEnergyR...@crai.com) for review. Duke Energy will review the change with the RFP Manager and communicate with the customer if it triggers a Material Modification.

Question: 1.In the case the project is selected as a Finalist in Step 2 of the RFP, when is the System Upgrade Cost deposit due?2.Once we make the deposit, and then we decide to withdraw the project for any reason, what portion of the above deposit would be refundable? Would this refundability change over time e.g., after signing GIA?

Answer: Duke Energy understands the question to be for a North Carolina state jurisdictional project. Under the NCIP, the M4 deposit is due 10 business days following issuance of the Facilities Study Report to the Interconnection Customer. If the Interconnection Customer has a Ready project that withdraws after the M4 deposit is made but before signing the Interconnection Agreement, NCIP Section 6.3.5.1 applies and caps the withdrawal penalty to $2M. Yes, refundability changes over time; NCIP Section 6.3.5.3 governs the calculation of the withdrawal penalty for projects with executed Interconnection Agreements.

Question: Per the PPA, Pre-COD Performance Assurance is to be calculated by the Buyer in its reasonable discretion. When will Duke provide the Pre-COD Performance Assurance amount for selected Finalist proposals?

Answer: A PPA Finalist that withdraws after executing a contract and providing their Pre-COD Performance Assurance is not eligible for any refunds of the Pre-COD Performance Assurance, unless termination is specifically permitted under Section 20.1.2 of the PPA.

Answer: Per Section V.J(3) of the RFP, performance assurance for PPAs will be calculated based on the Part A for Solar-only contracts and Part C (as well as the fixed energy price) for SPS contracts.

Question: We have a Solar-only project that has progressed through DISIS Phase 3 study and is now waiting for its Facility Study report. Likely will execute the Interconnection Agreement if all proceeds on time by mid-August 2024.Will this asset be able to participate in RSC/ RFP 2024? If yes, will there be any constraints?

Question: As a solar-only project goes through final designs and optimization in the future, the project DC capacity could change, while keeping the POI interconnection capacity the same and meeting the P50 MWh submitted in the Offer Form. The RFP form had requested bidders to submit both MWac and MWdc ratings for the facility and hence seeking clarity if this would be a problem. Thanks.

Answer: Bidders should provide the MWAC and MWDC ratings of the facility when new. Bidders should also be accounting for degradation in their year by year projection (MWh). Any changes in design will need to be reviewed by the interconnection team and evaluated on a case by case basis.

Answer: Facilities must be located in the Duke Energy Carolinas (DEC) or Duke Energy Progress (DEP) North Carolina or South Carolina service territory and will physically interconnect with the DEC or DEP transmission system.

Question: Can you please clarify how performance assurance will be calculated for SPS projects? The SPS PPA advises 4% of total projected revenue based on Part C pricing. Part C pricing does not include the solar revenue at $25/MWh. Should the solar revenue at $25/MWh be included for purposes of the performance assurance calculation?

Question: Based off the 2022 DISIS Phase II results and the 2023 DISIS Phase I results, the average lead time for network upgrades is currently around 70 months. How will the projects in the 2023 RSC be able to meet a COD before December of 2027 knowing these upgrades will need to happen before any 2023 RSC project can come online?

Question: If not shortlisted after Step 1 of the RFP, do MPs need to manually withdraw the projects from the Duke Interconnection Customer Portal or are these projects automatically withdrawn/ terminated from the Interconnection Customer Portal by Duke? If we need to manually withdraw, is there a deadline to withdraw without incurring withdrawal penalties? If it will be automatically withdrawn/ terminated by Duke, when would this happen and when would the MPs be notified?

Answer: If your project(s) did not receive an invitation to Step 2 of the RFP on or before January 23, 2024, these projects are no longer under consideration for this RFP. There is no need to request to withdraw from the RFP and your project will be withdrawn from the Resource Solicitation Cluster. A courtesy email to your account manager Kelly...@duke-energy.com and Loriael...@duke-energy.com is helpful but not required.

Answer: All solar-only PPAs will be subject to the 5%/10% economic curtailment rights as specified in the PPA. Other possible curtailment events include reliability curtailments for transmission events (these are infrequent and impact resources local to the transmission constraint that are exacerbating the constraint), and reliability curtailments for excess energy (these will presumably grow as more solar is on the system). From the modeling work that supports the Companies, 2023 Carolinas Resource Plan filed on 8/17/2023 for Portfolio 3, we are providing year over year solar curtailment estimates due to excess energy (as a percent of the total solar generation). See file Annual Solar Curtailment Estimates Due to Excess Energy.

Please note that these figures are modeled assumptions and outputs based upon a snapshot in time as of when the modeling was produced and numerous factors can impact the need for curtailment in the future. Resource Solicitation/Procurement participants should review the terms of the applicable solar-only PPA for terms and conditions related to resource curtailment.

Question: Can you please let us know what the 2022 Solar Reference Cost is for the 2023 RFP? I am referring to the Volume Adjustment Mechanism section and the footnote on page 30 of the RFP Protocol document. Thanks in advance.

Question: We are trying to understand how we would get the RFP Step 2 Proposal Security back in the case of withdrawal for some reason and the timing of that as the description on page 21 and page 22 of the RFP document does not clearly define that process.

Answer: Once a project has posted Step 2 Proposal Security, voluntary withdrawal does not release the security. Step 2 Proposal Security is released for projects that are not selected as Finalists in Step 2 or for projects selected as Finalists that sign a PPA and post the required performance security as outlined in the PPA.

Question: We would like to confirm whether, in the event of project withdrawal, the PPA security will be fully forfeited. If not, could you please specify the percentage that would be lost and provide details on how this calculation is determined?

Question: For projects that were selected to proceed through shortlisting and projects that were not selected, will the scorecards based on the grading criteria be available to share to their respective developers?

Question: If a MP is not selected to move forward in the RFP, will they receive individual feedback on their proposal? Will a report be issued at this stage in the process? Will bid pricing be made public? Is there an option to move forward with an interconnection study?

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