2.2 Integrative Process Credit (IP)

The IP Credit at a Glance

The Integrative Process (IP) credit is the only credit in the IP category and is worth 1 point in LEED v4.1 BD+C. It is the only credit in LEED that is explicitly about process — every other credit measures an outcome. Because of that, the exam loves to test what the IP credit requires, what it does not require, and when each activity must happen.

Quick Answer: Earn 1 point by completing a Discovery phase that includes a preliminary 'simple box' energy model and a preliminary water budget analysis before the end of schematic design, and by documenting at least one design or site decision influenced by each analysis during Implementation.

Credit Intent

The stated intent is to support high-performance, cost-effective project outcomes through an early analysis of the interrelationships among systems. Read that carefully: the credit is about interrelationships, not about energy or water in isolation. It is the only credit that rewards the team for studying how decisions in one system affect another.

The Two Required Phases

Discovery: Energy Analysis

The Discovery energy analysis must be a 'simple box' (or 'shoebox') energy model — an early-stage massing-level model used to test how design decisions affect energy. This is not a code-compliance or ASHRAE 90.1 Appendix G model; that level of detail comes later under the EA Optimize Energy Performance credit.

The Discovery energy analysis must, at minimum, study how the following affect energy use:

• Site conditions — solar exposure, prevailing winds, shading from adjacent buildings, microclimate
• Massing and orientation — building shape, aspect ratio, axis orientation
• Basic envelope attributes — wall and roof insulation levels, window-to-wall ratio, glazing performance
• Lighting levels — interior lighting power density and daylighting potential
• Thermal comfort ranges — heating and cooling setpoints, humidity targets
• Plug and process load needs — equipment loads driven by program
• Programmatic and operational parameters — occupancy schedules and use types affecting load patterns

Discovery: Water Analysis

The Discovery water analysis is a preliminary water budget. It must evaluate, at minimum:

• Indoor water demand — fixtures, appliances, kitchen, laundry
• Outdoor water demand — irrigation, including landscape type and area
• Process water demand — cooling towers, humidification, on-site processes
• Alternative non-potable supply — rainwater, stormwater, on-site greywater, condensate, municipal reclaimed water

The goal of the water budget is to surface opportunities to reduce demand and to substitute non-potable supply before fixture selection and landscape design are locked in.

Implementation: Documenting Influence

Discovery alone does not earn the point. Implementation requires the team to document at least one strategy from each analysis (energy and water) that actually influenced building form, envelope, systems, or site design.

Good documentation describes what changed because of the analysis. For example:

• Energy: 'The simple-box model showed that rotating the long axis 22 degrees reduced cooling loads by 14%. The team adopted this orientation, which also enabled a smaller chiller and eliminated one rooftop unit.'
• Water: 'The water budget showed that 38% of total demand was outdoor irrigation. The team replaced 60% of turf with native plantings, eliminating the need for a permanent irrigation system and reducing outdoor potable water by 100%.'

What the Credit Does NOT Require

A common exam trap. The IP credit does not require:

• A final ASHRAE 90.1 Appendix G energy model (that is for EA Optimize Energy Performance)
• A specific percentage of energy or water reduction
• Hiring a LEED AP
• Achieving any other LEED credit
• A net-zero, all-electric, or fossil-fuel-free outcome
• Use of any specific software

Timing Is the Test

If a question describes a team running its first energy model during construction documents, or analyzing water demand after fixture selection, the IP credit is at risk. The analyses must be early enough to influence design — operationally, that means before the end of schematic design. Late analyses can earn EA and WE points but cannot earn the IP credit.

Common Strategy Pairings

Because the IP credit is about interrelationships, the strongest documentation pairs an energy strategy with a water strategy that share a root cause. A few classic pairings:

The exam often presents a scenario and asks which analysis or which strategy best demonstrates IP thinking. Look for the option that explicitly couples two systems.