6.3 Capacity Planning and Management

Capacity planning is crucial for aligning production with demand, optimizing resource use, and supporting strategic decisions. It spans long-term investments, medium-term seasonal adjustments, and short-term daily scheduling, ensuring efficient operations and customer satisfaction.

Effective capacity management employs various techniques like utilization rate analysis, throughput optimization, and bottleneck identification. Strategies include leading, lagging, or matching capacity to demand, using flexible options, and managing demand through pricing and product mix adjustments.

Understanding Capacity Planning

Importance of capacity planning

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• Capacity planning determines production output levels aligning resources with projected demand ensuring optimal utilization of facilities, equipment, and labor
• Prevents underutilization or overutilization of resources minimizing costs associated with idle capacity or overtime
• Enables efficient resource allocation supporting meeting customer demand and service levels (just-in-time production)
• Facilitates long-term strategic decision-making enhancing competitive advantage (market expansion)

Levels of capacity planning

• Long-term capacity planning spans 2-10 years focusing on major capital investments involving facility location and expansion decisions (new manufacturing plant)
• Medium-term capacity planning covers 6-18 months addressing seasonal demand fluctuations including workforce scheduling and equipment acquisition (holiday season staffing)
• Short-term capacity planning operates daily to weekly dealing with immediate production needs involving shift scheduling and overtime decisions (rush orders)

Capacity Analysis and Management

Techniques for capacity utilization

• Capacity utilization rate measures efficiency of resource usage $CUR = \frac{Actual Output}{Designed Capacity} \times 100\%$
• Throughput analysis identifies bottlenecks in production processes helping optimize workflow (assembly line balancing)
• Capacity cushion provides planned excess capacity to handle unexpected demand $Capacity Cushion = \frac{Capacity - Average Demand}{Capacity} \times 100\%$
• Bottleneck analysis identifies constraints limiting overall system capacity focusing on improving the slowest process (Theory of Constraints)

Strategies for capacity management

• Capacity leading strategy increases capacity ahead of anticipated demand growth allowing capture of market share but risks overcapacity (tech industry expansions)
• Capacity lagging strategy increases capacity after demand has grown minimizing risk but may lead to lost sales opportunities (cautious market entry)
• Capacity matching strategy adjusts capacity incrementally to closely follow demand changes balancing risk and opportunity
• Flexible capacity options include:
  • Subcontracting
  • Temporary workers
  • Overtime
  • Equipment leasing
• Demand management techniques shift demand through:
  • Pricing strategies (peak vs. off-peak pricing)
  • Product mix adjustments
  • Backlog management
• Capacity pooling shares resources across product lines or facilities improving overall utilization (shared manufacturing facilities)