The “Half” Plan Cut energy use and green house gas emissions in halfand save a ton of money
We Will Cover … • What’s a “Half” plan? • Energy and CO2 reduction projects • Including some 1 year payback solar heating projects • Results • Making your own “Half” plan
What’s the “Half” Plan? We wanted to see if we could cut our energy use and green house gas emissions in half. • Is it possible? • What does it cost? • How much money does it save? • How hard is it? • Lifestyle changes?
Where Does The Energy Go? Must address all of these areas to make the goal Does not include embedded energy in Products, air transport, …
Where Does The Energy Go? Target 47,000 KWH/yr Target 32,000 lbs CO2/yr Must address all of these areas to make the goal Does not include embedded energy in Products, air transport, …
The “Half “ Plan Our 20 Energy Saving Projects • Conservation • Solar • Transportation
The “Half “ Plan Our 20 Energy Saving Projects Conservation • Solar • Transportation
Make Storm Windows From Bubble Wrap A simple, cheap, quick way to reduce window heat loss Energy Saving 960 KWH/year * CO2 Saving 490 lb/year Cost Saving $75 peryear 10 Year Saving $1200 Initial Cost $38 (or nothing) (2%) * 36 gal propane
Tame the PC’s PC, printer, monitor, router … use a lot of power • Plug everything into a power strip • Daytime: Hibernate when idle for 15 minutes • Nighttime: Shut off everything with power strips Energy Saving 1780 KWH/year * CO2 Saving 3560 lb/year Cost Saving $178 peryear 10 Year Saving $2840 Initial Cost $20 (4%) * for 2 PC’s and peripherals
Seal & Insulate Heating Ducts We sealed and insulated all accessible attic and crawl space ducts • Studies show that losses of 15 to 30%are the norm in homes conservative estimate Energy Saving 940 KWH/year * CO2 Saving 480 lb/year Cost Saving $75 peryear 10 Year Saving $1,195 Initial Cost $20 (2%) * 35 gal propane
Seal Heating Ducts (cont’d) • Use Duct Mastic • Seal every joint you can get to • Insulate ducts in attic or crawl space
Efficient Lights Use efficient lights! • Compact fluorescents, regular fluorescents, LED’s, … • Less than one year payback • Rebates Energy Saving 1170 KWH/year *CO2 Saving 2340 lb/year Cost Saving $117 peryear 10 Year Saving $1860 Initial Cost $50 (2%) * for 29 CF’s
Efficient Lights (cont’d) The savings add up fast • There are CF’s for just about any situation • A variety of light “colors” for cool to warm
Eliminate Phantom Loads Many electrical appliances use power even when turned “off” • Use a Kill-A-Watt to find the phantoms • Use power strips to cut all power • Or, replace high drain phantoms Energy Saving 570 KWH/yearCO2 Saving 1140 lb/year Cost Saving $57 peryear 10 Year Saving $910 Initial Cost $70 (1%)
Replace Energy Hog Appliances Old refrigerators, dishwashers, … may use 3 or more times as much power as new the Energy Star equivalents • Our new fridge saves 2 KWH per day • Energy Star website for ratings Energy Saving 720 KWH/yearCO2 Saving 1440 lb/year Cost Saving $72 peryear 10 Year Saving $1147 Initial Cost $800 (2%)
Stop Cold Air Infiltration • Caulk around windows etc. • Seal all penetrations from living space to attic Energy Saving 1980 KWH/year * CO2 Saving 1010 lb/year Cost Saving $50 peryear 10 Year Saving $2485 Initial Cost $38 (4%) * 73 gal propane
Add Insulation Blow in more attic insulation • Increasing our attic insulation from R22 to R47 gave us a 2 year payback* Energy Saving 1590 KWH/year * CO2 Saving 810 lb/year Cost Saving $126 peryear ** 10 Year Saving $2010 Initial Cost $260 (3%) * 60 gal propane ** Includes lower effective R value of FG insulation under cold conditions. ** Only half of our attic can be done.
Add Insulation (cont’d) • Free blower loan • Easy to do • But, do infiltration sealing first
Insulate Crawl Space We Converted our crawl space to an insulated, conditioned space Energy Saving 1090 KWH/year * CO2 Saving 560 lb/year Cost Saving $86 peryear ** 10 Year Saving $1370 Initial Cost $210 (2%) * 40 gal propane ** For crawl space under ¼ of house
Insulate Crawl Space (cont’d) Conditioned space • Seal floor with poly • Insulate walls • Insulate rim joist • Plug vents Alternate – insulate thecrawl space ceiling
Inside Storm Windows Multi wall polycarbonate storm windows • High R value • Easy to make • Fits any window • Lightweight Energy Saving 2700 KWH/year * CO2 Saving 1100 lb/year Cost Saving $220 peryear 10 Year Saving $3500 Initial Cost $450 (6%) * 100 gal propane For 30% of total window area
Inside Strom Windows (cont’d) Multi wall polycarbonate storm windows • Cuts easily • Easy to handle • Secure with Velcro or screws • Adds R 2.5
Thermal Shades Reduce night time window heat loss • Adds up to R 4 • Better with some type of edge sealing Energy Saving 3160 KWH/year * CO2 Saving 1525 lb/year Cost Saving $258 peryear 10 Year Saving $4,110 Initial Cost $1,086 (7%) * 117 gal propane For 32% of window area
Electric Mattress Pad A surprisingly large energy saving with a big increase in comfort Energy Saving 1270 KWH/year * CO2 Saving 510 lb/year Cost Saving $103 peryear 10 Year Saving $1640 Initial Cost $125 (3 %) * 47 gal propane
Venting Dryer Inside We vent our dryer to the inside of the house during the winter to recover the heat NOT for gas dryers! Energy Saving 630 KWH/year * CO2 Saving 290 lb/year Cost Saving $63 peryear 10 Year Saving $1000 Initial Cost $20 (1+%) * 24 gal propane
The “Half “ Plan Our 20 Energy Saving Projects • Conservation Solar Energy Projects • Transportation
Solar Space Heater Simple solar space heater Energy Saving 2,527 KWH/year CO2 Saving 1,320 lb/year Cost Saving $206 peryear 10 Year Saving $3,280 Initial Cost $350 (5%) Based on half time use – one year payback with full time use.
Solar Space Heater (cont’d) How it works • Cool air enters bottom vent • Screen absorber heats air • Heated air rises out top vent No fans, no controllers, no electricity.
Direct Gain Solar Heater • Direct gain heater • Free heat and daylighting • Night insulation • Easy to build • Two year payback Energy Saving 2,912 KWH/year CO2 Saving 1,525 lb/year Cost Saving $238 peryear 10 Year Saving $3,785 Initial Cost $380 (6%)
Direct Gain Heater (cont’d) How does it do at -20F? 70F Inside Outside -20F
The “Solar Shed” Collector A combination garden shed and solar collector that collects and stores heat for use in the house Energy Saving 6,970 KWH/year * CO2 Saving 3,360 lb/year Cost Saving $568 peryear 10 Year Saving $9,048 Initial Cost $4,000 (15%) * 260 gal propane This project is not included in the Halftotals yet, as we just got it up and running in January
“Solar Shed” (cont’d) The “Solar Shed” concept House New Garden Shed Solar Collectors HydronicHeaters Heat StorageTank Heat pipe to house
“Solar Shed” (cont’d) Construction
Future Solar Electric Postponed to last due to lower return Energy Saving 1,710 KWH/yearCO2 Saving 3,420 lb/year Cost Saving $170 peryear 10 Year Saving $2,720 Initial Cost $9,000 (4%) This project will double our total our investment while providing only 4% of total energy saving.
The “Half “ Plan Our 20 Energy Saving Projects • Conservation • Solar Transportation Projects
Bought a Prius Our single most effective energy saving project • A terrific car • 2 year payback for us • Happiness is driving 400 miles and filling up on 8 gallons Energy Saving 23,900 KWH/year* CO2 Saving 11,900 lb/year Cost Saving $1,880 peryear 10 Year Saving $29,960 Initial Cost $3000 (49%) * 650 gal gasoline 49% of Half target!!
The “Half “ Plan Results to Date
Results Two year payback on projects to date
Results Top 7 Projects -- Cheap and Effective Top Seven: PC’s, Seal Ducts, Bubble Wrap Windows, CF’s, Phantom Loads, Vent Dryer, Seal Infiltration.
The “Half “ Plan Planning Your Half Program
Doing Your Own “Half” Plan Making a “Half” Plan • Make a BIG list of project ideas • Estimate energy and CO2 savings for each project • Prioritize Projects • Make it Happen!
Doing Your Own “Half” Plan 1) Make a BIG list of ideas • Consider anything • Include all of your energy uses • Include conservation, solar, … • Sources of ideas • Attached resources list
Sources of Project Ideas Some good sources for ideas: • Build It Solar www.BuildItSolarMy site -- Look at the Projects page and the Half Plan pages. • Utility audit program – these can be quite good, and some even include blower door tests to check your house for infiltration. • Rocky Mountain Institute www.rmi.orgThe “Energy Briefs” papers are very good. • Energy Star www.energystar.gov/Lots of good information on Energy Star rated appliances as well as a wide variety of other energy efficiency subjects. • ”The Carbon Buster’s Home Energy Handbook”, Stoyke, 2007 • The EERE site www.EERE.Energy.gov/Consumer • Home Power Magazine, Mother Earth Magazine, …
Doing Your Own “Half” Plan 2) Evaluate each project for how effective it will be in reducing energy, CO2 emissions, and cost. • This is the key to getting the best results for the money you have to spend • Projects rates of return will vary over a very large range – this step helps you pick the good ones.
Tools To Evaluate Projects • Insulation Upgrade Calculatorwww.builditsolar.com/References/Calculators/InsulUpgrd/InsulUpgrade.htmThis simple calculator can be used to evaluate insulation upgrades, window improvements, storm windows. • The “Half Plan” Exampleshttp://www.builditsolar.com/References/Half/Projects.htmThese example projects each include details the details on how the energy saving was calculated. • “The Carbon Buster’s Home Energy Handbook”, Godo Stoyke, 2007Many concrete examples of energy reduction projects. • Carbon emissions calculator --Infinite Power http://www.infinitepower.org/calculators.htm • Car Carbon emissions -- Hybrid Cars dot Com http://www.hybridcars.com/calculator/ • If you get stuck – contact megary@BuildItSolar.comI’ll do my best to help or find someone who can.
Doing Your Own “Half” Plan 3) Prioritize -- Decide what order to do projects in • Cheapest and best payoff first • Some may need to go earlier • The most interesting ones