High Performance Building Solutions Long Beach

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Gilleran Energy Management offers comprehensive high performance building solutions in the Long Beach area. Since 2002, GEM has specialized in providing energy efficiency and green building consulting for the market rate and/or the affordable housingsingle-family residentialcommercial, winery, school, and cannabis industries. Our consultants will work with you to understand your goals, then create a customized sustainable design that will balance aesthetics, cost-effectiveness, safety, and security.

Contact us today to discuss how we can assist you.


High performance buildings offer superior efficiency, comfort, health, and durability for residences and businesses, as well as providing positive environmental impact and financial benefits. The most sustainable, energy-efficient buildings are those that have every system working together efficiently; this whole-building approach can also help save on costs of materials and labor, reduce construction waste, minimize warranty claims, and lessen the purchase cost of appliances, like HVAC equipment.

Our high performance building solutions in Long Beach take all these considerations into account to optimize your building’s performance. Our experienced consultants specialize in the following services to help you meet your goals:

  • All-electric building energy analysis for transitioning from natural gas to all-electric building design
  • Evaluation of new affordable housing for the California Energy Commission’s new BUILD all-electric low emissions development program
  • Evaluation of residential new construction and alterations for the California Energy-Smart Homes program (provides incentives to adopt advanced energy measures and transition to all-electric construction)
  •  Building Energy Modeling and Title 24 Compliance Analysis
  • Evaluation for 45L federal tax credit
  • Zero Net Energy
  • Commissioning 
  • Retro-Commissioning
  • Cost-Benefit/Return on Investment Forecasting
  • Single and Multifamily HERS II & BPI-based
  • ASHRAE Levels 1-3 Auditing
  • Tenant Utility Allowance Reporting
  • Performance Testing
  • Utility Allowance Calculation (CUAC) Consulting
  • Residential Auditing
  • ENERGY STAR Certification & Benchmarking
  • Energy Conservation
  • Building Performance Testing: BPI, CALGreen, HERS
  • Solar-PV System Sizing
  • Energy Audits and Modeling
  • Battery Backup Review


Regardless of whether your goal is to meet minimum code requirements for high performance buildings or construct a Zero Net Energy building, the GEM team is here to support you throughout the process. For more information on how our high performance building solutions can benefit your Long Beach project, contact Gilleran Energy Management at (707) 528-7318 or email us at information@gilleranenergy.com.