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It specifies how cost estimates are developed and used, including Base Estimate, escalation, contingency, and project scope concepts. It also defines how cost estimate accuracy, contingency, and updates are actively reviewed and reported across the project life cycle to support transparency and rate impacts.",{"@graph":63,"@context":119},[64,80,102],{"@type":65,"itemListElement":66},"BreadcrumbList",[67,71,74,77],{"item":68,"name":69,"@type":70,"position":9},"https://docshare.wps.com","Home","ListItem",{"item":72,"name":10,"@type":70,"position":73},"https://docshare.wps.com/template/",2,{"item":75,"name":46,"@type":70,"position":76},"https://docshare.wps.com/template/paper-templates/",3,{"item":78,"name":59,"@type":70,"position":79},"https://docshare.wps.com/template/attachment-d-iso-new-england-planning-procedure-4-project-cost-estimating-guidelines/239574/",4,{"url":78,"name":59,"@type":81,"image":82,"author":87,"headline":59,"publisher":90,"fileFormat":93,"inLanguage":57,"description":61,"dateModified":94,"datePublished":95,"encodingFormat":93,"isAccessibleForFree":96,"interactionStatistic":97},"DigitalDocument",{"url":83,"@type":84,"width":85,"height":86},"https://docshare.wps.com/thumbnails/attachment-d-iso-new-england-planning-procedure-4-project-cost-estimating-guidelines/239574.png","ImageObject",442,249,{"name":88,"@type":89},"Quinn Holloway","Person",{"url":68,"name":91,"@type":92},"DocShare","Organization","application/pdf","2026-10-16","2026-09-11",true,{"@type":98,"interactionType":99,"userInteractionCount":101},"InteractionCounter",{"@type":100},"ViewAction",10,{"@type":103,"mainEntity":104},"FAQPage",[105,111,115],{"name":106,"@type":107,"acceptedAnswer":108},"What is the purpose of Attachment D in the ISO New England Planning Procedure 4?","Question",{"text":109,"@type":110},"It provides consistent cost engineering terms and definitions and a standardized cost estimating approach for specific ISO-NE projects, and it outlines review and reporting throughout the project life cycle.","Answer",{"name":112,"@type":107,"acceptedAnswer":113},"How does the document define a Base Estimate?",{"text":114,"@type":110},"The Base Estimate is the original estimate without contingency within a given estimate class. It is not changed while the project remains in that class, and cost adjustments are based on it.",{"name":116,"@type":107,"acceptedAnswer":117},"What does the document say about contingency in cost estimates?",{"text":118,"@type":110},"Contingency is an added amount to cover items, conditions, or events with uncertain state, occurrence, or effect, typically estimated using statistical analysis or judgment based on past experience.","https://schema.org",{"og:url":78,"og:type":121,"og:title":59,"og:site_name":91,"og:description":61},"article",{"robots":123,"canonical":78},"index,follow",{"doc_id":125,"site_id":56},239574,1789150664,{"code":4,"msg":5,"data":128},{"doc_id":125,"user_id":129,"nickname":88,"user_avatar":130,"doc_module":9,"category_id":45,"category_name":46,"doc_title":59,"doc_description":61,"doc_content":131,"file_id":132,"file_url":133,"file_type":134,"file_size":135,"view_count":101,"is_deleted":4,"is_public":9,"is_downloadable":9,"audit_status":9,"page_count":20,"language":136,"language_code":57,"site_id":56,"html_lang":57,"table_of_contents":137,"faqs":138,"seo_title":139,"seo_description":61,"update_tm":126,"read_time":47},2336474466712,"https://ap-avatar.wpscdn.com/davatar_a8503ba1806abce46bf441b54a3ca4cd","Attachment D to ISO New England Planning Procedure 4-Project Cost Estimating Guidelines  \n© ISO New England Inc.  \nSystem Planning Department  \nSeptember 7 , 2023  \nISO-NE PUBLIC  \nAttachment D  \nContents  \n1 Purpose ................................................................................................................................. 3  \n2 Terms and Definitions ............................................................................................................ 3  \n2.1 Cost engineering definitions.............................................................................................3  \n2.2 Project planning stage ..................................................... Error! Bookmark not defined.  \n2.3 Examples of Contingency & Scope Change ....................................................................5  \n3 Cost Estimating Process ........................................................................................................ 7  \n3.1 Development of the cost estimate....................................................................................7  \n3.1.1 Cost estimate components ........................................................................................7  \n3.2 Cost Estimate Accuracy & Contingency...........................................................................9  \n4 Project Cost Estimates Updates .......................................................................................... 10  \n4.1 Submission of Project Cost Estimate Updates............................................................... 10  \n4.2 Project Cost Estimate Template .................................................................................... 10  \n4.3 Project Cost Estimate Change Reporting Template ...................................................... 10  \n5 Document References ........................................................... Error! Bookmark not defined.  \n1  PURPOSE  \nThis document provides consistent cost engineering terms and definitions and a standardized approach to cost estimating in the region for Regional Benefit Upgrade (RBU) projects developed through the Solutions Study process pursuant to Section 4.2 of Attachment K of the OATT, or reconstructions/replacements of Pool Transmission Facilities.  \nThis document also outlines the active review and reporting of cost estimates throughout the project life cycle from the planning and design to the construction phase. The process outlined in this document will help enable consistency in Participating Transmission Owners’ project cost estimates, increase project costs transparency , and provide regular information about the transmission investments made in the region and the impact to rates.  \n2 TERMS AND DEFINITIONS  \n2.1 Cost engineering definitions  \nCost Estimate: A prediction of quantities, cost, and/or price of resources required by the scope of an asset investment option, activity, or project. As a prediction, an estimate must address risksand uncertainties. Estimates are used primarily as inputs for budgeting, cost or value analysis, decision making in business, asset and project planning, or for project cost and schedule control processes. Cost estimates are determined using experience and calculating and forecasting the future cost of resources, methods, and management within a scheduled timeframe.  \n􀁸 Base Estimate: The Base Estimate is the original estimate (without contingency) in any estimate class (A, B, C or D) . The Base Estimate will not change while the project is in the particular estimate class and all cost adjustments will be based on this estimate. For a Base Estimate to change the project will need to be moved to a differed Estimate Class  \n􀁸 Escalation: The provision in actual or estimated costs for an increase in the cost of equipment, material, labor, etc. , over that specified in the purchase order or contract due to continuing price level changes over time. Inflation may be a component of escalat","cbCailkv0BnqaKou","https://ap.wps.com/l/cbCailkv0BnqaKou","pdf",587366,"English","# Contents\n## 1 Purpose\n## 2 Terms and Definitions\n## 3 Cost Estimating Process\n## 4 Project Cost Estimates Updates\n## 5 Document References","[{\"question\":\"What is the purpose of Attachment D in the ISO New England Planning Procedure 4?\",\"answer\":\"It provides consistent cost engineering terms and definitions and a standardized cost estimating approach for specific ISO-NE projects, and it outlines review and reporting throughout the project life cycle.\"},{\"question\":\"How does the document define a Base Estimate?\",\"answer\":\"The Base Estimate is the original estimate without contingency within a given estimate class. It is not changed while the project remains in that class, and cost adjustments are based on it.\"},{\"question\":\"What does the document say about contingency in cost estimates?\",\"answer\":\"Contingency is an added amount to cover items, conditions, or events with uncertain state, occurrence, or effect, typically estimated using statistical analysis or judgment based on past experience.\"}]","Attachment D - ISO New England Planning Procedure 4-Project Cost Estimating Guidelines | PDF"]