Quelles sont les normes et lignes directrices d’estimation de projet que vous suivez ou recommandez?

In #ProjectManagement, a well-structured and detailed approach to #estimation is crucial. Start by defining the project scope clearly, breaking down #tasks into manageable components using "Work Breakdown Structures" (#WBS). Use historical data (when available) from similar projects to inform your estimates, ensuring you account for all phases, initiation, planning, execution, monitoring, and closing. Apply estimation techniques like analogous estimating for high-level approximations or parametric estimating for more precise calculations. This structured approach ensures comprehensive coverage of all project aspects.

Use a structured approach to break your project into manageable units, such as tasks, activities, deliverables, or features. This helps you define your project's scope, requirements, and dependencies and avoid missing or overlooking any important aspects. This is a concise and informative summary of the importance of using a structured approach to project estimation. It highlights the key benefits of this approach, such as helping to define the scope, requirements, and dependencies of the project and avoiding missing or overlooking any important aspects. It also emphasises the importance of choosing a method appropriate for the specific project type, size, and complexity that aligns with the team and stakeholders.

Project estimation techniques are methods of calculating the time, cost, and resources needed for a project. Some of the common project estimation techniques are: Analogous estimation: using past projects or similar projects as a reference point. Parametric estimation: using statistical models or formulas based on project variables or parameters. Delphi method: using a panel of experts to provide estimates anonymously and iteratively. Three-point estimation: using the best-case, most likely, and worst-case scenarios to calculate the expected outcome. Expert judgment: using the experience and knowledge of project team members or subject matter experts.

Project estimation is a critical aspect of project management, while there isn't a one-size-fits-all approach, several estimation standards and guidelines are commonly used in the industry. It's important to consider the nature of the project, the available information, and the level of uncertainty involved. A combination of estimation techniques may be used to provide a more comprehensive and accurate picture. However, I would suggest Breaking down the project into smaller components, estimating each individually, and aggregating the results.

Choose a project estimation technique that matches your project characteristics, such as the level of detail, uncertainty, data availability, and lifecycle stage. Common techniques include expert judgment, analogy, parametric, three-point, and bottom-up. Use a technique that provides a realistic estimate and accounts for assumptions, risks, and contingencies. This summarises the importance of choosing an appropriate project estimation technique. It highlights the key factors to consider, such as the project characteristics and the desired level of accuracy and reliability. It also provides a brief overview of some common estimation techniques and emphasizes the importance of considering the project's assumptions, risks, and contingencies.

Involve the right people with the relevant knowledge, experience, and skills to contribute to project estimation. This helps leverage collective wisdom and insights and increases buy-in and commitment. Use brainstorming, interviews, surveys, workshops, or estimation games to foster collaboration, communication, and feedback. It highlights the key benefits of this approach, such as leveraging the collective wisdom and insights of the team and stakeholders and increasing buy-in and commitment to the project. It also provides a few specific examples of methods that can be used to involve the right people.

Validate and refine your estimate by comparing it with historical data, consulting with subject matter experts, conducting feasibility studies, and adjusting based on changing project requirements or constraints.

Validation and refinement are critical stages in ensuring accurate #project estimates. Cross-check initial estimates with industry benchmarks or #expert opinions to validate their accuracy. Conduct regular reviews at different project milestones to refine these estimates based on actual #progress data. Incorporate #feedback loops where #TeamMembers can provide insights on discrepancies between estimated and actual #performance, allowing you to adjust forecasts proactively.

Validate and refine your project estimate to ensure accuracy, consistency, and credibility. This helps identify and correct errors, inconsistencies, or gaps. Use methods like cross-checking, benchmarking, reviewing, or testing to assess your estimate and incorporate any changes or updates objectively. This is a good summary of the importance of validating and refining project estimates. It highlights the key benefits of this approach, such as identifying and correcting errors, inconsistencies, and gaps and improving confidence and trust in the estimate. It also provides a few specific examples of methods that can be used to validate and refine estimates.

Communicate and document your estimate by sharing it with stakeholders, ensuring clarity on assumptions and risks, and updating documentation as necessary to maintain alignment throughout the project lifecycle.

Effective #communication is key to #successful project #estimation. Present your estimates in clear, concise language that stakeholders can easily grasp. Avoid jargon; instead use simple terms to explain methodologies and assumptions. Visual aids such as charts or flow diagrams (my personal preference and recommendation) can further clarify complex information. Regularly (or as defined) update stakeholders on progress and any changes in estimates to maintain transparency and trust throughout the project's lifecycle. Documentation of your steps is essential for accountability and future reference. Include assumptions, potential risks, and contingency plans. This documentation will serve as a foundation for improvement in future projects.

Monitor and update your estimate regularly by tracking actual progress, identifying variances, reassessing assumptions, and adjusting the estimate accordingly to ensure accuracy and alignment with project goals.

Project estimation standards like PMBOK, PRINCE2, or ISO 21500 provide guidelines for accurate and consistent estimation. In renewable energy, following PMBOK ensures thorough estimation of resources for subsea/offshore wind projects. ISO 21500 guidelines aid in estimating compliance study resources. For manufacturing, adhering to PRINCE2 standards ensures comprehensive estimation of production costs. Similarly, in battery storage, PMBOK standards help estimate resources needed for installation and maintenance.