Investment Grade Audit (IGA) Services

Walker Blue specializes in providing comprehensive Investment Grade Audits (IGAs) designed to deliver accurate, actionable, and financial-grade insights into energy savings opportunities. Our IGAs are meticulously aligned with industry standards, such as ASHRAE guidelines, ensuring reliability, clarity, and effectiveness in driving decision-making for energy efficiency investments.

Delivering results that exceed industry expectations, regularly achieving:

Energy savings of 20% to 40% or more

Project paybacks often within 2 to 5 years

Enhanced accuracy in projected versus actual energy savings through precise modeling

Strictly adhering to industry standards, such as:

ASHRAE Level 1-3 protocols

International Performance Measurement & Verification Protocol (IPMVP)

Utility regulatory requirements

Value Proposition

Precision & Reliability:

Rigorous, standards-based audits providing precise savings forecasts.

Financial Assurance:

Detailed financial analysis to inform sound investment decisions.

1

Compliance Alignment:

Fully compliant with ASHRAE standards and utility or governmental mandates.

Streamlined Decision-making:

Clear, actionable data to accelerate project approvals and implementation.

Our Proven Process

Step 1: Initial Assessment & Planning
  • Understanding your goals and energy-saving targets.
  • Data gathering, preliminary walkthroughs, and utility bill analysis.
Step 2: Detailed Site Investigation
  • Comprehensive on-site energy systems audit.
  • Analysis of equipment efficiency, operations, and controls.
Step 3: Energy Modeling & Savings Calculations
  • Advanced energy modeling adhering to industry-leading methods.
  • Quantitative evaluation of potential energy conservation measures (ECMs).
Step 4: Financial Analysis & Reporting
  • ROI calculations, life-cycle costs, and payback analysis.
  • Detailed report presenting clear, concise, and financially actionable recommendations.
Step 5: Presentation & Implementation Support
  • Interactive presentation of audit findings.
  • Ongoing technical support during project implementation and verification stages.

Why Choose Walker Blue?

Expertise & Experience:.

Decades of combined experience in energy efficiency audits and tax incentive strategies.

Tailored Solutions:

Customized audit processes designed specifically for your facility and operational needs.

Financial Optimization:

Leveraging engineering expertise to maximize potential incentives, rebates, and tax deductions.

Latest Blogs & News

Walker Blue Supports Congressional Effort to Extend 179D and 45L Energy-Efficiency Incentives

179D, 179D Updates, 45L Credit, Blog, EPAct 179D IRS Tax Deduction, In the News, News, One Big Beautiful Bill, Section 179 Tax Deduction | June 30, 2026

Campus geothermal energy system showing underground heat exchange loops serving multiple educational buildings, illustrating how district and campus geothermal projects can support sustainability goals and potentially qualify for federal clean energy tax incentives.

Can District and Campus Geothermal Projects Qualify for the Federal ITC?

Campus Geothermal, District Geothermal Systems, Geothermal Tax Credit, ITC | June 15, 2026

Court Vacates IRS Notice 2025-42: What Solar Developers Need to Know Before July 4

Court Vacates IRS Notice 2025-42: Five Percent Safe Harbor Restored for Now

Blog, In the News, News, Safe Harbor | June 7, 2026

Geothermal Central plant

Case Study: LEED EA Energy Modeling for a $90M Geothermal Central Plant: University of Louisville Speed School

Blog, Case Study, Energy Engineering, Energy Modeling, LEED | May 26, 2026

Walker Blue Applauds Rep. Brian Fitzpatrick’s Introduction of the American Energy Dominance Act

179D, 179D Updates, News, Section 179 Tax Deduction | April 27, 2026

Exhibiting: CASBO CON, March 31 – April 1

Industry Events | March 24, 2026

Contact Walker Blue Today