Investment Grade Energy Audit (IGA)

Investment Grade Energy Audit (IGA)

Investment Grade Energy Audit (IGA) is the highest level (Level 3/ASHRAE Level 3) energy audit providing detailed engineering analysis with bankable financial modeling for large-scale energy efficiency projects and ESCO financing.

Scope of Work

Phase 1: Detailed Data Collection

  • 12-24 months historical utility analysis
  • Continuous metering (7-30 days) all major systems
  • Equipment nameplate verification and no-load testing
  • Production/energy correlation modeling

Phase 2: Comprehensive System Analysis

System

Detailed Measurements

Electrical

Transformer efficiency curves, harmonic spectrum

HVAC

Chiller part-load testing, cooling tower performance

Motors

Load profiling (>75% of connected load), efficiency mapping

Compressed Air

Full network pressure survey, leak quantification

Process

Steam mass balance, furnace stack gas analysis

Phase 3: Financial Engineering

  • Life Cycle Cost Analysis (LCCA)
  • NPV, IRR, Payback calculations (15-year horizon)
  • ESCO performance contract modeling
  • Sensitivity analysis (energy price, interest rates)
  • Risk assessment matrix

Phase 4: Bankable Deliverables

  • Detailed ECM engineering specifications
  • Itemized BOM with vendor quotes
  • 3D energy savings simulation validation
  • Legal/financial contract templates
  • Implementation phasing schedule