Houston Green Building Roadmap Richard Morgan Austin Energy.
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Transcript of Houston Green Building Roadmap Richard Morgan Austin Energy.
Houston Green Building Roadmap
Richard Morgan
Austin Energy
Green Building in Austin
Started in 1991 as single family homes rating system.
Evolved from Austin Energy Star Homes program-alternate path to energy code compliance
Municipal and commercial buildings in 1995 Multi-family rating system in 1999 June 2000 Council requires LEED Silver for
Municipal bond projects Manage it Green consulting group begun in 2002
Current State
In the beginning all private sector compliance was voluntary
1999 MOU with City’s Affordable Housing Dept. to require compliance for housing receiving incentives from COA
2003 requirement for buildings zoned DMU or CBD
2004 use of GB as trade off for PUDs or variances
Energy Code
GB brings new energy codes to council for adoption Review new IECC versions for efficiency
improvements and local needs Develop local amendments to meet Austin’s needs Review with stakeholders before taking to council IECC 2006 w/local amendments 19% more efficient
than 2000 IECC w/local amendments– Based on 2270 sq. ft. typical home-2462 kWh per year
reduction
Single Family GB
Locally developed rating tool Currently using v.8.0 of SF rating tool 1 to 5 star rating- 1 star = basic GB, 5 star
highest possible, 7,000+ homes, 35 at 5 star Custom and volume builders, high end to
affordable
SF basic requirements
14 SEER HVAC efficiency Submittal of Manual J for HVAC sizing Duct leakage testing Air barriers as per Energy Star Minimum of 5 fluorescent lights 2 H.E. Toilets 40 points from optional menu
SF Process
Builder submits rating spreadsheet and Manual J
Staff review for obvious discrepancies Staff inspection at rough mechanical Duct testing performed by third party Staff final inspection Certification
Multi Family GB
Locally developed rating tool Applies to projects with 3 floors of residential
or less Apartments to high end condos 50 projects completed-6,365 units, 5.5 million
sq. ft. 44 projects currently under review, 4,270+
units
MF requirements
Energy Star labeled windows or exceed COA Energy Code envelope performance by 15%
Testing/commissioning of HVAC units All showerheads 1.8gpm or exceed EPAct
indoor baseline by 15% Divert 50% by weight construction debris and
waste
Commercial GB
Locally developed rating tool or LEED Separate/similar tool developed for AISD
bond projects MF projects permitted as commercial, rated
as commercial 46 projects complete, 1.32 million sq. ft. 100 projects under review, 8.6 million sq. ft.
Commercial Requirements
Commissioning Plan, Verification, Report submitted
Energy Star Qualified Roof Exceed COA lighting and envelope energy
requirements by 15% Divert minimum 50% construction waste and
debris from landfill No “grandfathered” water quality compliance
Commercial Process
Owner’s rep. submits Request for Participation Staff assigned to project and participate as
sustainability consultants– Goal setting– Plan and spec review and recommendations– Building energy simulation review
Construction monitoring Documentation reviews Certification
Key Strategies
Professional education– Monthly seminars– Conferences and trade shows– Web based resources
Marketing– Create demand for GB from the public– Acknowledge exceptional buildings and teams– Promote program as “go to” source for GB issues
Key Strategies
Stakeholder involvement– Participation in trade associations– Education on “their turf”– Participate in other groups events
Market Transformation
Work with the leaders, if everyone does it-it is not GB
When measures become accepted, raise the bar
Use the code to bring the rest of the industry up to the level of the leaders
Results
Single Family– FY ’06 1049 ratings-21% of new SF homes in
service area– 874 kW of demand eliminated- 0.7 kW per
(demand is power plant capacity not needed)– 1,469,000 kWh savings to consumers 1400 kWh
per– 936.83 Tons CO2 not emitted– 72,913,892 gallons water saved, 69,508 per
Results Commercial
Medical Office Building- 3 Star AE GB– 129,691 Sq. Ft.– Demand Savings 462 kW– Energy savings 1,370,719 kWh– CO2 reduction 874.2 tons– Building water 770,975 gallons- 28%– Irrigation water (July) 103,954 gallons- 75%– Construction waste 303.9 tons diverted 50%
Results Commercial
Grocery – 4 Star AE GB– 93,000 sq. ft.– Demand savings 172.5 kW– Electric energy 1,141,179 kWh– Gas energy 730,000 CCF– 989.4 Tons CO2 (gas & electric)– Building Water 535,308 gallons 36%– Irrigation water 67%– Construction waste 127 tons 81%
Results Multifamily
Apartment building, 240 units, 196,000 sq. ft.– 2 star AE GB rating– 157 kW demand reduction
Live/Work Condos, 29 units, 29,467 sq. ft.– 3 star AE GB rating– 57.3 kW demand reduction
Total Results FY 2006
Demand Reduction- 14,755 kW Energy Saved 24,974 mWh $ value of energy $2,222,686 CO2 reduction 15,926.8 tons SOx reduction 3.04 tons NOx reduction 15.36 tons
Austin Climate Protection Plan
Upgrade energy code to make all single family homes built in Austin by 2015 ZECH
Upgrade energy code to make all other construction 75% more efficient than existing code
Develop policy/program to require energy use disclosure and upgrades at resale
Develop evaluation and recognition program for carbon neutral buildings
Continue to upgrade GB standards for projects required to meet program requirements
Lessons Learned
Be inclusive, all your stakeholders bring something valuable
Avoid the bandwagon, no one knows your climate and your buildings better than the people working in your area
Be bold, no one will care what you do if you take half measures