Seth Downs | Zero Energy Homeowner | Solar Fiesta ABQ 2014

hello my name is Seth downs I’m pleased to be here do the sponsorship of positive energy we’re here to talk about Maori modeling of our home in Albuquerque to a zero energy home hopefully you’ve tuned in you may not know what a zero energy home is but if you don’t zenergy home is a house that can produce as much energy as it consumes on an annual basis and in our case we use so electric or PV panels to produce the clean renewable energy and once we figure that out or once we had so electric on there we also were able to reduce our energy consumption by seventy percent and we’ll go into that in this presentation now the story was started back in January 2009 my wife got a position here at the University of New Mexico has professor and we’ve been looking all fall for a house not too much luck and then come December she calls me up while I was at work in Alaska and she says I found the perfect house doesn’t have any heat the water doesn’t work it’s as is and when I walk through it I almost retched because it smells so bad I said perfect honey let’s get it so we did in January 2009 I walked into the house and started fixing the place up now when we started this project we didn’t know what a zero energy home was we just knew we wanted to move in and we had some idea about energy efficiency but we didn’t have any any goals and that kind of evolved over the years and so we made a few mistakes as we went along some of the characteristics of the house as i write told you had no heat no water there’s no insulation in the house there was no southern exposure and too much western exposure and what i’m talking about there is glazing or windows you want windows on your south side so in the winter time when the Sun is low in the horizon it passes east to west the sun’ll comes in and warms your house then of course in the summertime it’s high on the sky if you have proper proper overhang then the Sun will come in and he your house but however you have a lot of western windows that long western windows Western Sun will heat your house in the hot summer which is not very desirable here in Albuquerque so we have the worst case scenario as far as windows were concerned we also had a very leaky house at over 20 100 cubic feet of air leakage so if you can imagine a hole in the side of your house but 21 inches by 10 inches wide that is the cumulus cumulative leakage of our house and you’ll get air leaks you know from your baseboard from electrical outlets sockets lighting fixtures ducks things of that nature in a word this is the perfect remodel and if you’re going to do a energy-efficient house this is a great way to start but like I said we didn’t really know what we’re doing to start off with so the first mistake I made was I put in a high-efficiency forced air furnace not normally you think that’s a pretty good thing to do right but I later learned that if you put a duct work outside or insulated envelope you’re pretty much giving away thirty percent of your energy to the outdoors so my high-efficiency furnace was instantly an energy hog now we’re going to talk about the KISS principle keep we’ll keep it simple stupid so all the things I’ve done in this house our main stream they can be serviced by most any contractor and you can find them at most home improvement stores or certainly online so the four pillars of our Netzer ng home in order of importance was to insulate and to seal all sides the envelope and I highlight the all because I’m talking about not just putting insulation in the Attic with a crawl space but also doing the walls and our ceiling is also very important consideration with air sealing is that we live in a state atmosphere its pressure vessel so if you focused on maybe the baseboard and the light fixtures in the ceiling that will give you the most bang for your buck the next item was high efficiency mechanical systems so you’re heating your cooling your hot water system next you might want to constant high efficiency appliances and lighting so your refrigerator your dishwasher clothes washer cooking stove LED lighting and low water fixtures and I want to just talk about reduced phantom loads right now phantom loads or anything that’s on all the time so maybe a coffee maker with a clock in it also Kayla box is a notoriously large energy hog TVs garage door openers so one way to tackle that is if you put like all your entertainment systems on a power

strip you can turn that off we’re not using it and that’ll save you some energy on an annual basis then the fourth thing and that’s last use your soil electric your PV to offset your home’s energy use and one thing that’s not listed on here may be the fifth pillar it’s kind of hidden is you have to be a zero energy home family there’s interesting case study done in New England they built 80 mg homes and put in eight different families and they got eight different results some were surplus energy so they produce more energy than it consumes somewhere near net zero and some are wildly over so it pays to be conscious conscientious in the house you live in ok this slide we’re going to talk about insulation and ceiling of your envelope our house was a cement block wall which is pretty common here in Albuquerque it’s got a lot of mass or store energy but has a very low r-value so I transfers transfers heat rather easily so before we did any computer modeling and before I had any deer we wanted to be a NetZero home we had already done a fair amount of work so this is about three years into it put some insulation in the attic and the crawlspace and we put that whose numbers into the computer modeling and I wanted to figure out how much insulation to put on the exterior walls and how much benefit air sealing would have on our house so we found that if we add one inch of exterior foam an hour value of 6.5 we’d actually reduce our annual heating load by forty percent which is a pretty significant amount if you double the installation to our 13 we got a reduced heating load down to 59 so you can see you have a declining value of yet add more insulation you’ll have less benefit from that and so then it becomes a cost consideration how much do I spend an insulation and how much am I going to save on energy costs and then you can kind of way that with how much energy will i get from installing a solar electric system with the air leakage something interesting happens with air leakage if you reduce it by 500 CFM for my house that’s imagine a 1 by 5 inches of holes being plugged in your house you get a nine percent reduction in heating and that’s a very linear thing so if i reduce it by another 500 CFM i get about another nine percent reduction in heating and i just read a blog on green building advisors and they someone asked if I had a pot of money and I could put it towards more insulation or putting a really good air sealing the expert said definitely go over the air sitting we get most bang for your buck there so I thought that was pretty interesting this next piece I’m going to talk about global warming potential of various types of foam that we put on the exterior of your brick house unfortunately I didn’t know about this as I was deciding what to do with my walls but I read this and I thought I wanted to share with you so I’m talking about global warming potential DWP think of one atom of carbon as one and if goal warm potential is seven that seven times more detrimental to our atmosphere than an atom of carbon now the first one is esps and this is the white BTW board you’ll find at your home improvement stores has an R value for its relatively inexpensive it’s easy to shape and most your local contractors are going to be familiar with this product the next one down is XPS this is the hard rigid Bluebird you once again will find at your home improvement stores has an r-value of five and it’s not very environmentally friendly because it has a GWP of fourteen hundred and thirty so it’s pretty nasty stuff and most energy efficient experts will recommend you avoiding it if at all possible the next one is 0 is the polyisocyanurate this is a very high R value of 6.5 and will the GWP of only seven it’s quite environmentally friendly and this is where I was really leaning towards unfortunately it’s it’s fairly expensive and most contractors aren’t familiar with it I was able to find one contractor here in Albuquerque that was willing to do it but he had a problem with code and putting insulation foam insulation over my chimney and I definitely wanted to have that done because if you didn’t insulate that that’s a huge thermal bridge a lot of heat to escape from your house so I kept on searching and I ended up with polyurethane spray foam the two-pound high densities what’s you can put on your exterior of your brick house or block house it also has an R by a 6.5 unfortunately gabp is at ten-thirty but i found a contractor here in town that was very knowledgeable and i thought i’d give me a good price so we end up going with that here’s a hers rating for our house and this is a home energy rating system it’s what hers means gives me a

computer simulation of heating design load and energy usage three-year and when you talk to each BAC contractors they’re rarely going to do a hers or a manual J they just they just do rule of hand and invariably they’re going to give you an oversized system probably another benefit of a hers rating I’ll give you a blower door test so you can see where your air leakages in your house and you can mark it and go back to it later on and fix those air leaks and it also gives you a much more accurate energy model so the results below are based on my house with our 38 was already in the Attic RIT in the crawlspace I wanted to see what are 13 on the walls had ro point three point three four windows and 2100 CFM so when I do a blower door test what they do is they put a their door into your doorway it has a fan in it and they depressurize it to 50 Pascal’s that’s the equivalent about 20 min hour breeze so our house had about six point out 6.8 air changes per hour in those conditions now the first thing we look at is the annual load and that’s in millions BTUs per year and above that you’ll see the abbreviations ng and DMS ng stands for the natural gas high-efficiency furnace that I already had in my house dms stands for ductless mini-split these are air source heat pumps they’re very efficient think of them as a very fancy refrigerator so the annual load means how much heat do I need to put in my house to be comfortable for the winter season and you can tell them what temperature point you want I told might be 68 degrees what we like inside we’re comfortable with that and for our house it would be 25.5 millions be to use to heat under natural gas how much heat we need for the ductless mini-split 21.2 now normally these numbers should be too because it’s just how much energy do I need in the house but once again because my my ducks were outside the insulate envelope there’s air leakage and loss of heat to the Ducks you’re gonna have a higher number for the natural gas now the number below the annual consumption also and millions of BTUs per year shows how much energy I need to produce to create that annual load now for the natural gas it’s 29.2 once again do the inefficiencies having Ducks outside your insulated envelope we have a higher number but something you notice interesting with the ductless mini-split these air source heat pumps you have a much more efficient system only takes 6.8 millions be to use to create the annual load of 21.2 and they call that a co p a coefficient of performance so if i divide a 21-point to buy 6.8 that’s going to be 3 something’s what’s three times more efficient or let’s fit this way i can create it’s one unit electricity but i can create 3 plus units of heat bring into my house because just bringing bringing the heat from outside literally and putting it into your house i can do the opposite in the summertime they can bring the coal from outdoors actually bring it inside for you and so how much is 6.8 million BTUs it says on the bottom there that’s equivalent of 68 therms or just under two thousand kilowatt hours and this is like I said an annual consumption for heating our house by the way it’s 1,600 square feet ranch the next one is the design load your right corner top there and this is in thousands of BTUs per hour and these are what contractors are going to determine what size heating system to put into your house so you normally hear like a one ton or two ton a ton is 12,000 BTUs per hour so for the natural gas i need 23.8 almost a two ton system for the decklist may spit 16.1 so about was I want a third ton system so once again you see it’s more efficient I’m going to step back a second I forgot to talk about the cooling and the cooling under the annual load and the annual consumption see how the annual load is 11.5 but cooling is two point oh so have a co p of greater than five and the reason why that is is because the delta T the temperature from indoors and outdoors so in the wintertime you have a set point of say 70 degrees inside you want and outside its 30 that’d be a delta T of four degrees in the summertime maybe it’s 90 degrees outside and 70 inside that’s only a delta T of 20 and that’s why you have a higher coefficient of performance in the summertime then the last thing they’re the energy costs this is dollars per year even though the natural gas is widely and efficient it actually comes in cheaper as an energy costs 171

dollars versus 215 and this is probably why tactical gas is so prevalent in our in our nation but one thing that doesn’t consider is the cost for hookup so in summertime I can’t use natural gas to cool my house voice now at my furnace and with at twelve dollars a month say for six months so all of a sudden it comes more expensive than going with my electric ductless mini-split system another consideration is that I can’t make natural gas on my house and nor do I want oh but I can make clean energy solar pv so this was really a no-brainer to go with a zero energy house all-electric next one of some slides of some of the installations we did the works better in the Attic da they turned on the blower before they had the the hose up in the attic so they they fill my hallway up with insulation we went with the blown fibre glass Yas go blown cellulose that’s very good too and maybe a little bit more environmentally friendly it’s also very cheap to put in there and that’s why you’ll find higher r-value is usually in attics not because he he doesn’t rise hot air rises he goes from hot to cold but you always find higher r-value attics gently because it’s just cheap to put it up there so why not put more in the next one is the floor joist we put five and a half inches of spray foam in the bottom there in these next three words open-cell low density and half pound spray from all interchangeable and contractors may use one two or all three of these to describe what they’re putting in their not had about an hour value of our 19 when they say hello density it’s very soft you can get in there with your hands and rip it right out if you want to and then up top we put in two inches of the closed cell high density two-pound spray foam that an r-value of our 13 you can see we just sprayed it right over the old stucco and fortunately for us we need to replace the stucco anyways so it was all kind of developed into the cost and what they do if they put the nut metal lath over that and they’ll restock lip and it looks really quite nice and it’s certainly more comfortable to in the wintertime annex my father-in-law we started cutting out the old steel windows we had their single pane they were pre drafty lot of them didn’t work and we replaced them with a local company glass right they make double paying sliders here vinyl sliders and there’s certainly better Windows you can get fiber glasses is more environmentally friendly triple pane is certainly much more energy efficient but then you certainly have a much higher expense and so you get back to this the scale right you have to decide well how much my go spend on this particular energy efficiency item how much is going to save me and I’m just going to cost for solar PV and and years past ten years ago it was no question energy efficiency was the low-hanging fruit all the time you really want to make house as energy efficient as possible but with the steep reduction in cost of PV there becomes a more intellectual debate as to when those two things balance so for us in this house the dull pain sliders were okay our house is all electric we had ously natural gas at one time when I was thrilled to disconnect it a few summers back much the concern of our hers rater and an HVAC contractor the the ductless mini splits and things like that off kind of new in America at least ductless mini splits have been around Asia in Europe for a long time but they’re just starting to get to more mainstream here in the US and they’re very common now for zero energy homes are being built from scratch they’re very very popular like I said they’re right quiet they’re very efficient and we’ll get him to those just a little bit more well the next one down is induction stove it’s also super efficient and the bottom there I mentioned he monitors energy so this is Mark Rosenbaum he’s a dull graduate from MIT he’s he was actually a teacher of my I took an online course 10-week course on zero energy home design and the capstone project was to design a syringe home in wherever you wanted to and I designed one for Anchorage Alaska and so that was really empowering to learn how to design an energy model and determine the be mechanical and appliances for a 0 ng home if you do in Alaska you can probably do it almost anywhere with the right site location but anyways mark has this blog called thriving on low carbon and he moved into a house that he also turned into a zero energy home and along the way he describes all his rationale he

so energy monitor each system before he changed him out and then compare the new system so you can see how much efficiency he gained and with the induction stove compared to his natural gas you found it seventy-seven percent more efficient or you lose seventy-seven percent less energy and gas did where does electromagnetic it excites the molecules right in the pan and so have very even heating it’ll also be very fast so you can boil water in like 90 seconds it’s also very accurate you can set the temperature to any level you want and we love cooking on it we you can also get you can’t replace your whole stove you can also get a little hot pot table top ones which we have an Alaska use that you bought at costco for 340 bucks I find I use that probably ninety percent of time for my cooking because I just enjoy using it so much another benefit of knowledge trick house is there’s no combustion I’ll have to not burning fossil fuels in my house I don’t worry about gas leaks and finally it’s easy to monitor interviews you know you look out you can track down what your meter reads one day or one year and come back and look at it again see if it’s spinning forward or backwards and you’ll know how you’re doing okay next we’ll talk about the high efficiency appliances those two websites listed there the c e dot one or argon top ten will list your high efficiency appliances for you and it’s a much better guide then you’ll get from the energy stars cee one is very detailed to break it down by model numbers and the different energy aspects of each appliance top ten USA is kind of a fun site to go to it’s easy to easy to use it’ll give you the top 10 most efficient plants for each thing and also they’ll compare the cost of the appliance and how much energy i’ll use for that particular plants over a certain period of time and give you like a total cost so you can compare apples to apples so we’ll talk about each appliance listed here the marathon electric hot water heater so this is a hot water storage unit it has a plastic liner instead of a metal so it’s going to last longer it’s not going to rust out and then I put spray form around the outside so it’s very efficient and electric hot water heaters are actually more efficient than gas because they don’t have gas has that flew in the middle right so the hot air is always escaping through the top but people go with natural gas just because it’s very cheap to get natural gas next down is the front load clothes washers those are coming more and more common over the last decade or so they’re very very energy efficient they use less water they can spin your clothes at a higher speed when you put those clothes in the dryer it’ll be less energy to drive those clothes and also they’re much more gentler on your clothes so they’ll be good for your clothes as well for us we don’t use a dryer we have a clothes rack you can see in the back there we also have a clothes line or you can use your shower rod for maybe your sheets and in Alaska you almost never use our dryer we just do what I sit like I said we use the shower rod for the big stuff and have a clothes dryer and it works great next refrigerator and there’s a few things to consider their the freezer on top is more efficient a small refrigerator is more efficient than a large refrigerator a full refrigerator has more stuff in it as more mass it can be more efficient than an empty one obviously things like ice makers and water makers inside adore definitely a no-no what’s really interesting if you look the Energy Star guide they don’t consider having an ice maker in there and so an ice maker I didn’t realize this until I read Marx blog to get the ice out they actually heat the mold so you have a here inside your freezer which is pretty crazy and then it’s even crazier that they don’t consider that as part of your energies for the annual consumption and so they did a study and they figured about twelve to twenty percent increase in energy consumption for your ice maker and the last one is your dishwasher your top ten you’ll find lots of dishwashers that are our energy efficient now and they’ll make a big difference youth less water generally speaking then washing your hand dishes by hand unless you’re widely efficient and hand washing okay now a lot of people learn talk about hot water again mark Rosenbaum has an excellent for blog series on it and I recommend you read that so throughout these slideshow I have hyperlinks I’m at the end of slideshow I have my email or phone number if you want that or maybe be on the web page you can get access to this slideshow and then you can have access to these hyperlinks and follow up with more research on your own if you like but some key points for hot water is to minimize your distance from your hot water tank to the fixtures in your home try a centralized app using smaller diameter piping and obviously to reduce your usage with both low water fixtures and energy-efficient appliances okay and that considerations what kind of hot water systems I want and the list there

is determined from low usage to high usage so this might come as a surprise to some people that mark recommends a standalone enslaved hot water storage heater like I recommend it with the marathon because its energy efficient but also it’s just simple you can find this in stores any plumber can fix this that’s why he went with that and with PV price coming down so much you have the Sun heat your electric hot water here for you and it just makes sense and that’s where a lot of strategy homes are going now now if you have a bigger house or you want to try an air-source heat pump it’s similar to a ductless mini-split same principle but there are considerations with that because it’s tracting heat from the air if you have it inside your house that room it’s in has to be fairly large they say 10 by 10 feet at least it’s going to be cool which might be nice in the summer time but not as nice in the winter time so you may not want to be in a space that you’re you’re in quite often also it’s going to make more noise it has a higher decibel rating so having it close to a living space might be uncomfortable in that regard so maybe in the basement or a large closet out of the way or in your garage might be a place to put that and then last the solar hot water heating for if you’re using a lot of water maybe a really large family or to make that you might want to consider solar hot water because it is a fairly complex system that the prices haven’t dropped as much as as the PVS have and that’s why the mark brings it down to the bottom a little bit cut it back to the KISS principle other efficiency items i recommend the Niagara 1.5 gallon per minute shower heads code right now it was 2.5 gallons per minute we tried different showerheads you know different high price ranges to lower price range we tried the one gallon the 1.25 gallons you know and for us really 1.5 is about as low as we go and still feel comfortable this showerhead pictured there is about fifteen dollars so it’s pretty reasonable consider you can spend fifty to a dollars for other little low-flow showerheads low-flush toilet we have a one point two eight gallons per flush the code now is a 1.6 and if you have a toilets 10 15 years old that could be consuming somewhere between three and five gallons per flush and I know for us the utility actually gave us money to replace that toilet so I was actually free for us so that was an easy decision and in fact if you saw the pictures of the toilet when we move into the house you’d know why why replace those toilets I had to spend an hour cleaning it so I can rip it out it was that gross LED lighting is getting better and cheaper every month and as opposed to CFLs it has no mercury and actually lasts a very long time it’s the same thing about CFLs but I’ve been having problem with those four for almost two decades now I’m always kind of burning out but I had LEDs for 10 years I’ve never had one fail then I dropped them the rock solid like I said they’re getting cheaper and there’s super energy efficient and some complaints are that they don’t like the blue light ability lighting so if you look at the back they’ll talk about Kelvin so you want 2700 kelvin so i’ll give you the same color as an incandescent bulb and maybe look up to 3,000 getting higher that you’re gonna start getting the bluish light which some people don’t like but yeah just go to your home improvement stores and Lowe’s and Home Depot still have different brands and see what see what you like and see what fits we pretty much have LEDs and through our entire house now and they’re wonderful and we’ve talked about air sealing your house obviously if you make your your house of balloon super airtight you’re going to have to bring in some mechanical ventilation and the gold standard steps if you’re going to build a new house would be to bring in mechanical ventilation with a energy recovery unit so you transfer the heat from the outdoors for the indoors vice versa depending on the sea we didn’t go with that option we want probably with the next thing down so a little maybe a little energy intensive or you have to be a conscientious owner so this is a whole house fan it’s sort of like a backwards swamp cooler so what it does is I’ll open the windows on the far corners or the four corners of the house and I’ll turn on the fan and that will suck hot air up through the ceiling into my attic and then fanatical it will vent out to the outdoors so this is great on cool summer nights or maybe on the shoulder season like spring and fall when it’s a it’s cool at night but warm in the daytime I want bring some heated I just cracked that window open turn on the fan and it’s very energy efficient so you can see those are the fan speeds 25 and 1500 CFM so 1500 CFM it only consumes 44 wats that’s fairly quiet at 37 decibels and I’ll use this in the wintertime as well because I have all that mass from the block walls I’ll just open those windows turn it on for like 10 minutes I’ve totally changed the air in my house and I’ll close it up my

house warm right back up again as the heat escapes from the walls and then the other probably the last thing you could do for bringing fresh air in your house would be using high efficiency bathroom fans with a timer you want to get like a DC a brushless motor they’re very efficient low energy use and you put on timer so it actually will bring in fresh air at a plant amount at certain hours of the day so if you if you seal your house you definitely need to consider how you can bring fresh air into their now this is the layout of our home I said it’s 1600 square feet these ductless mini splits go back to that hers rating I needed what 16,000 BTUs per hour the smallest system they make is 9000 be to use and you can have one outdoor unit and multiple heads indoors or in our case we used one outdoor and one indoors consideration is you know about 40 feet from outdoor unit to the indoor heads and if you have a well-insulated insulated house you can get away with less ductless mini splits if you don’t then you need more heads inside because use our point source heating and cooling right so lets you can see it’s the far living room has to heat all the way into the kitchen and laundry room and so on a hot summer day if you’re cooking pizza have family over if you’re open that door a lot a bit it’s going to get warm in that line of the kitchen and so it’ll get to be about 5 degrees Fahrenheit difference between the living room in the kitchen on the on those consideration on those days so when you place the locale if you’re ductless mini-split consider you know how you use your house where your your heat sources what doors you’re using what time of the year yeah so this is a ductless mini-split the top unit is on operational inks to the hatch is kind of late opening see the black strip in the bottom that’s the fan the bottom pictures the outdoor unit and these things are really fancy they have book control with motion sensors time of day usage you can change the speed of your fan you put an automatic it’s variable speed very quiet very efficient and highly recommend them the energy guide here so they have a scale of my 10.9 up to 21 and and from I insist 27.2 this is a seer this is like the cooling rating so as it’s off the chart super efficient and like I said I have 11 outdoor unit 21 indoor unit and like I said you can put more units off that you’re going to get a little bit less efficiency but your cost per unit is going to certainly go down that unit there’s about three thousand dollars right there so the final step for us to getting that 0 was installing some solar PV we put in some some power panels positive energy installed in for us but two and a half years ago and our 3.84 kilowatt system produced about 73 100 kilowatt hours so actually produced that much resulting in about 1,900 kilowatt hours per cell kilowatt which is which is obviously as you know lots of Sun in New Mexico and it’s it’s we do it great here I think most installers now they’ll say we can guarantee about 1800 kilowatt hours per install kilowatt and the cost right now I just ask them is about 4,500 per per kilowatt so you can use those numbers to create estimation how much energy you can produce and then you can start thinking out your efficiency goals and cost from that right here we have our house are our solar panels on a per ulor it can be much cheaper and gently preferable just put them on your roof but like with our glazing ourself glazing we had lots of shade on the south side and we’re roof angles so it wasn’t an option for us unfortunately we did have a good backyard and so we built this pergola and now we enjoy barbecues what not out there underneath our PBS now this is this is a slide and this will bring home some of the things I talked about the daily energy use dropped from 64 230 1 kilowatt hours which is a 71 percent reduction now the red line is our energy consumption over the different winters the first peak is we moved in about April and then that first winter we had the forced gassed hyphen c gas forced air furnace hadn’t any installation we had some efficiency items in there like a the refrigerator and the dishwasher and i think i think the clothes washer but that’s about it that consumed 64 kilowatt hours per day on the coldest month the next winter we’ve got some insulation in the attic and the crawlspace had a new windows installed and we put some new doors in there and i dropped it a little over ten percent down to 44 kilowatt hours per day now this next winter you see a huge drop and this is where i talk about

doing all sides right of insulating your house so by this time we got the are 13 exterior walls on they dropped by over fifty percent our energy consumption down as 67 kilowatt hours per day and the next one next when you see the ductless mini-split heating dropped it another 50 plus percent down to 31 kilowatt hours per day on the coldest month and they go further along you see it spiked up again and this goes back to the fifth pillar you have to be an energy conscious household my wife and I were on maternity leave in Alaska when we ran to the place out and a family of three living there obviously they have a different consideration of what their comfort level is and so we have more energy use the green line just depicts the kilowatts produced by our system and the blue line is the difference between consumption and production so if the blue line is below the zero line that means we had energy surplus and then if it’s above it means for consuming energy from the grid right now we have about four thousand kilowatt hours credit with p.m. because that’s where a surplus energy house here’s a slide on our costs about 40k do our energy improvement home on our house like I said are 38 I talked about it was cheap so it’s at eight hundred dollars and at the time there is there’s a rebate from the utility company to put some of that in there the r19 spray foam that’s about 2500 in the crawlspace the RO 13 gets a little more expensive that was about fifty nine hundred probably more square footage than the other places but as you saw that made a huge difference in our energy consumption by putting those two inches of foam on there it also makes the house a lot more comfortable in the wintertime extra charge for high efficiency appliances about 1500 I think you’ll find the induction stove really being a bit large chunk of that one double pane loi windows throughout the house is forty five hundred dollars foam corridors about a thousand the ductless mini-split 5704 those two units which is pretty much what it cost me to put the natural gas furnace in there too bad I didn’t know about forehand oh well the Hoss fan was fifteen hundred dollars and and lastly is a three of the PV system about seventeen thousand dollars after rebates and like I said if you put this on your roof and with the price reductions coming down so much over the last few years you’re going to find that probably half the price what I paid for it so some our resources for I’ve learned a lot is thriving on low carbons that’s mark rose and bombs blog green building advisors put stuff on there almost every day it’s just a great resource if you want to read a book and administers book on energy free homes for a small planet is very good here’s a check from PNM they pay me now or monthly basis and I get about 500 month around five hundred a year from them another resource is a thousand home challenge they’re documenting and verifying existing homes that reduce their energy consumption by seventy percent and in you can go there and you can see all these case studies and learn a few things and you’ll find our house on there as well and that’s where we got the idea of reducing our energy consumption by seventy percent was through the house and home challenge and just barely made it this is a fun slide just made and compares consumption and costs so our house consumes less like it makes up a little bit so my house consumes about 6400 kilowatt hours per year and I compare that with your average car you driving 12,000 miles you know cried is about 30 miles per gallon that consumes 16 over 16,000 kilowatt hours so almost like two and a half times what your your house consumes so cars are really any consistent hogs now if you had electric car and drove 12,000 miles to get about three miles per kilowatt hour that’s only about 6400 kilowatt hours so electric cars are really the way of the future I mean so I got excited I said wow this is this is pretty cool I can for only 6,400 kilowatt hours i can i can drive my car and so well how can I do this I said okay if I put in 2.1 kilowatt unit so it possibly this much and the rebates about fifty four hundred dollars also heading off to fifty four hundred dollars i have a gas station powered by the Sun it’s going to power my car for the next 25 years and a link this is the future I just goes to an article by a bank in Switzerland USB bank saying how fossil fuel power plants are going the way of the dinosaur that with the reduction in pv wind and the future of battery technology the cost coming down that that fossil fuel plants will be going the way of the dinosaur which is pretty

exciting you have any questions please feel free to email me or call me like I said if you if you need access to the hyperlinks by all means send me a link I’d be happy to answer your questions thank you