NetZero & Hearth Products California Energy Commission Climate zones Appliance standards TDV – Time Dependent Valuation LCC – Lest Cost Calculation 2007 Energy plan - The Role of the IOU’s - CASE Compliance Software -The “Engine” Calgreen PIER

CEC Est – 6 Divisions Charged with: –Forecasting future energy needs –Licensing power plants –Promoting Energy Efficiency- Appliances & Buildings – support local Gov Enforcement –Support Renewable Energy, Solar Electric –Public Interest Energy Research ($83Mill) –Planning for Energy Emergencies (2000) –AB 32 Lead Agency - Greenhouse Gas

Policy Goal – Flat per Capita Energy Consumption

Per Capita-by State

(Click graph for details) California System Status June 27, 2011

Additional Objectives 2013 Code Achieve big step towards Zero Net Energy codes in 2020 (res) & 2030 (nonres) % improvement in Standards Include CEC Approved Reach Standards - propose for Energy Chapter of Title 24, Part 11 (Green Building Code) Align with CBSC triennial code update

16 Separate Climate Zones Each with Separate “issues” for buildings

Time Dependent Valuations-TDV

TDV Thermostats CEC Staff presumes hourly pricing of electricity Staff assumes thermostats will collect hourly data, & meters will charge by hour Staff assumes ‘stats’ will have modems & communicate, internally & externally Almost made it into the 2008 code

Least Cost Calculation-LCC Equation for Life Cycle Cost Analysis ΔLCC = Cost Premium – Present Value of Energy Savings or ΔLCC = ΔC – ΔTDV $ Objective is to find measures with negative ΔLCC

LCC

IOU’s & “CASE” California Investor Owned Utilities = IOU California Codes and Standards Group – – “The Codes and Standards program directs initiatives that will enhance building and appliance standards to codify and implement cost effective, reliable and verifiable demand side measures in support of maximizing portfolio savings.” Edison, So. Cal Gas, PG&E, San Diego Gas

Current Res CASE list Envelope Cool roofs Roof insulation Advanced building framing and envelope Windows Compressorless homes Infiltration and testing HVAC Zone air conditioning Ventilation and economizing

CASE list- cont. Base case efficiency Duct pressure drop and testing Solar oriented developments Solar ready homes Solar water heating DHW and distribution systems Water heater standing losses Plug loads Lighting Plug load controls

Compliance Software – California Simulation Engine (CSE) All parts of opaque surfaces (frame and cavity) are calculated separately as mass elements (walls, floors, ceilings, interior walls, furniture) Separate radiant and variable convective heat transfer for all surfaces Pressure flow air flow network for infiltration, ventilation and HVAC interaction ASHWAT window model with hourly variable properties and interaction with interior and exterior shades

CSE – Duct Loss, 1 Key Portion Slightly modified 2008 UZM –All or part of the duct system in the attic zone –Convection and radiation between ducts and attic air and surfaces –Leakage from/to attic air Unbalanced duct leakage assumed for standard cases Ventilation and infiltration between house and attic by air network

CalGreen Part 11 of Title 24 (State Building Code) Focuses on Water use, also Building construction waste & Recycling, HVAC training Environmental Quality Section – IAQ –“Requires gas fireplaces to be direct-vent, wood and pellet stoves to comply with EPA limits or comply with a local ordinance, whichever is more prohibitive. “ (Green Technology Summit, June 2011) Whole House Ventilation Systems

PIER Public Interest Energy Research –Funded by “Public Good” charge on all IOU utility bills, = $6.4 Billion Bulk stays with Utilities (80%?) CEC administers R & D, with input from California Public Utilities Commission (CPUC), Workshop July 11, 2011 for- Long-Term Energy Efficiency Strategic Plan (CEESP)

Tentative Outline-Energy Codes 2013 Code –Nov ‘09-Oct ’10, Pre Rulemaking, CASE studies –Oct ’10-Dec ’10, 1 st workshops –Feb-July ’11, Staff workshops, 1 st Draft standards –July-Sept ’11, receive comments, 2 nd Draft –March 1, ’2012, CEC adopts Code –April ’12 – Dec ’13, finish compliance manual & software, trainings, –January 1, 2014, Effective Date 2016 Code –Fall , Pre Rulemaking