Energy & Sustainability Consulting Stockton

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When you’re searching for comprehensive energy & sustainability consulting in Stockton, turn to the experienced team at Gilleran Energy Management. Founded in 2002, we specialize in delivering the latest and more effective solutions at the market rate and/or affordable housingresidentialcommercial, winery, school, and cannabis industries. Whether you’re interested in finding the most energy-efficient upgrades for an existing residence or planning a Net Zero Energy building from the ground up, our energy and sustainable building consulting will help you meet your goals successfully–on time and within budget. 

Contact GEM today at (707) 528-7318 to discuss your project.


At GEM, we provide complete support for your project, from building permit approvals and energy audits to retrofitting and building certification. We also completely customize our plans to meet your needs. To ensure we’re providing the most up-to-date strategies, our consultants routinely stay abreast of the latest industry standards, regulations, and certifications, as well as incentive and rebate programs. Additionally, we’ll work with your construction and design teams to ensure the key aesthetic features of your building or residence are retained.

We offer the following energy & sustainability consulting services in Stockton:

  • All-electric building energy analysis – transition from natural gas to all-electric building design.
    • Evaluation of new affordable housing under the California Energy Commission’s new BUILD all-electric low-emissions development program
    • Evaluation for the California Energy-Smart Homes Program for residential new construction and alterations program that provides incentives to adopt advanced energy measures and transition to all-electric construction
  • Green Building Certification Programs: LEED, GreenPoint Rated, ENERGY STAR, Indoor airPLUS, WaterSense
  • Evaluation for 45L federal tax credit
  • CALGreen Compliance and Consulting
  • Green Building Charrettes
  • Zero Net Energy
  • Building Energy Modeling and Title 24 Compliance Analysis
  • Building Performance Testing: BPI, Title-24, CALGreen, HERS
  • Utility Allowance Calculation (CUAC) Consulting
  • Affordable Housing Tax Credit Services
  • Tenant Utility Allowance Reporting
  • Residential Auditing
  • Retro-Commissioning
  • Energy Conservation
  • Performance Testing
  • ENERGY STAR Certification and Benchmarking
  • Single and Multifamily HERS II & BPI-based
  • Cost-Benefit/Return on Investment Forecasting
  • ASHRAE Levels 1-3 Auditing
  • Life-Cycle Cost Analysis
  • Greenhouse Gas Analysis 
  • Energy Audits and Modeling
  • Solar-PV System Sizing


Our energy and sustainable building consulting services will help ensure every step of your project is streamlined. From project management and funding support to certification programs, GEM provides proven strategies and actionable recommendations in line with the latest industry standards and best practices. For more information on how we can assist you, contact Gilleran Energy Management today at (707) 528-7318 or email us at