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Marin Green BERST Initiative: Transforming Energy Efficiency for a Sustainable Future

Marin Green BERST is a task force and technical advisory committee working towards improving Marin County's energy efficiency through policy recommendations and expert guidance. With a focus on green building and energy retrofit projects, the initiative aims to reduce greenhouse gas emissions, conserve water, and enhance indoor air quality while promoting resource conservation and future adaptability. Find out more about the cost-effective strategies and endorsements for residential and non-residential buildings in Marin.

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Marin Green BERST Initiative: Transforming Energy Efficiency for a Sustainable Future

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  1. MARIN GREEN BUILDING, ENERGY RETROFIT & SOLAR TRANSFORMATION

  2. Who is Marin Green BERST? A Task Force composed of elected or appointed representatives from each Marin city, town and the County to develop policy recommendations and champion these efforts within their jurisdictions. A Technical Advisory Committee of volunteers with expertise in construction, energy efficiency and conservation to advise the Task Force.

  3. 2 Building Officials (Novato and Belvedere) • 3 Architects • 2 Contractors • Energy efficiency/green building auditor • Energy consultant • Marin Builders Association • Marin Association of Realtors • Marin Energy Authority • PG&E • Strategic Energy Innovations • MMWD • Marin Conservation League • Marin County Planning Directors Who is Marin Green BERST? Technical Advisory Committee composition:

  4. Results of San Rafael’s Greenhouse Gas Inventory: Why Marin Green BERST?

  5. 20% gain in energy efficiency of existing buildings Marin Green BERST Removing ½ of all cars from the road = Energy Efficiency

  6. 20% gain in energy efficiency of existing buildings Marin Green BERST Removing ½ of all cars from the road = Energy Efficiency

  7. Regulations which are consistently implemented across Marin jurisdictions. • Regulations which achieve, in priority order: Marin Green BERST • Energy savings • Greenhouse gas reductions • Water conservation • Practicality of implementation • Cost effectiveness • Improved indoor air quality & occupant health • Resource conservation • Adaptability for future technology • Effective marketing • Environmental protection Objectives

  8. Marin Green BERST Model Green Building Ordinance endorsed by: • Marin Green BERST Task Force • Marin Builders Association Green Building Committee Endorsements

  9. Marin Green BERST Recommendations: Residential

  10. Marin Green BERST • Cost Estimates – New Single Family • GreenPoint Rater: $1,500-2,500 • BIG GreenPoint Rated certification: $450 • Cost of energy upgrades: ~$1/sq. ft. (~0.5% of project cost) • $200 annual energy savings ≈ $40,000 savings over the life of the building Recommendations: Residential

  11. Marin Green BERST Recommendations: Residential

  12. Marin Green BERST Recommendations: Residential

  13. Marin Green BERST • Cost Estimates – Renovated Single Family • HERSII or BPI home performance audit: $350 - $800 • GreenPoint Rater: $750-1,500 (can be the project architect) • No reliable data on the cost of upgrades Recommendations: Residential

  14. Marin Green BERST Recommendations: Non-Residential

  15. Cost Estimates – New Office • LEED AP: depends on project scope - can be the project architect • Cost of energy upgrades: ~$1.50-2.50/sq. ft. (~0.5% – 0.8% of project cost) • Overall cost of LEED upgrades: ~1-6% of construction cost • LEED certification (only buildings 50,000sf+): $10,000+? Marin Green BERST Recommendations: Non Residential

  16. Marin Green BERST Recommendations: Non-Residential

  17. Calif. Energy Commission must approve cost effectiveness to exceed Title 24 reqmts. • Study examined 12 prototypical new single family homes, 4 new multi-family projects and 4 new office buildings • Generally, additional costs for energy upgrades is about $1/sq. ft. (except 7,500sf single family “net zero energy” home) • Average simple payback in ~13 – 20 years Marin Green BERST Cost Effectiveness Study

  18. MARIN GREEN BUILDING, ENERGY RETROFIT & SOLAR TRANSFORMATION

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