Tag Archives: net zero energy

The Energy Journey…Combustion and “The Living Building Challenge”

Solar PV, Methane, and The Living Building Challenge

Thursday, February 25, 2010 at 9:30am

Our Energy Journey Continues:

Despite our Eco-Sense home using a fraction of the energy of a regular BC home, and our lifestyle choices for conservation, we are still challenged as to how to cook our food sustainably.

We produce the majority of our food onsite, cook from scratch, and process much of our winter food. In this past year we have consumed propane for a total energy of 1890 kWhrs. (two kitchens and 6 family members).

The Living Building Challenge 2.0 does not allow any form of combustion, however Eco-Sense registered for version 1.3 which did allow biogas. But, as we just discovered, this biogas is only allowed for heating/energy production and NOT for cooking. We had planned on designing and building an onsite biogas digester fed from the organic wastes locally available to produce methane for cooking. The fact that thais was not allowed was our misunderstanding.

The standards for the Living Building Challenge (LBC) are indeed hard to reach. This vision is admirable indeed…and hard to achieve, which is the whole point.

Eco-Sense is net zero electricity, but currently is not net zero energy. In order for us to provide the additional 1890 kWhrs from solar PV for electric cooking we would need to install 6.9 new panels. (round up to the nearest two is 8) If we didn’t cook from scratch, and purchased processed foods from elsewhere we would probably need two or three less panels, and if we were only one family we would already be producing enough energy to be totally net zero energy.

Here’s the calculation:

total produced/12 existing solar panels = 195 kWhrs/panel

new energy required – excess already produced = 1351 kWhrs

1351/195 = 6.9 solar panels

So lets explore this to identify the barriers for eco-sense to become truly net zero energy for the purposes of the LBC.

If BC Hydro had a better net metering program, many of the cost barriers would be overcome. BC Hydro is WAY behind as they only pay 8.2 cents per kWhr. Shameful for a province that claims to be leading the way towards sustainability.

Embodied energy (tGHGe produced) to mine, manufacture, and transport the solar PV panels, aluminum frames, and all the other bits and pieces is still VERY high. We compare the solar panels of today to the first computers that came out…they are big, heavy and require lots of stuff to connect up. The future of solar PV is more like a leaf…very small and lightweight.

Currently, we think that producing our own biogas onsite (for cooking) from chicken manure and broom would have a lower carbon footprint – any thoughts on this????

Removal of all the current tax disincentives to solar PV. (Here are a few of them)

  1. HST on solar technologies
  2. building permit fees on entire solar installations
  3. increase in municipal taxation because of property value increases due to BC Assessment of all future energy energy production

Eco-Sense pays an extra $400 per year in municipal taxes because we generate sustainable energy (works out to $10,000 over the 25 year life cycle of the system)

We recently discussed this issue with the BC Assessment appeal board and MLA John Horgan, and everyone agrees that this is wrong. Solution involves changing the Legislation with the BC Minister of Finance.

Education: Require more public pressure to push governments to create meaningful incentives for solar technologies AND support for research to fast track technology.

So, to sum up, It doesn’t look like Eco-Sense will be able to fully meet the Living Building Challenge, but we are are still applying. Our community of the Highlands has chipped in the $1000 registration fee for our home to be assessed for all six categories.

There is much to be learned and contributed from our application to the Living Building Challenge. Let the assessment begin.

Ann and Gord Baird

Friday March 12, 2010

Gord and I had a conversation about COMBUSTION with Jason McLennon who is the CEO of the Cascadia chapter of the US and Canadian Green Building Council.  He is also the lead author of the Living Building Challenge (LBC)…A building system well beyond LEED platinum.  Combustion is not seen as a sustainable option under the Living Building Challenge.  This conversation arose when Gord and I were considering using a biogas digester from waste (broom and goat manure) to produce methane for cooking. Since our Eco-Sense home is a registered Living Building Project this issue of combustion is very important to us. Below is an email conversation I had with Brian (a local mechanical engineer).  We are still thinking about which route to go.

Brian: While nature does not burn fuel to get energy, it does set itself on fire all the time. Forest fires are natural and essential for healthy forest growth. Not to mention volcanoes will decimate hundreds of square kilometres but deposit phosphorous rich ash that improves soil fertility. Both of these processes burn and destroy, but they also revive and renew.

I agree with the desire to mimic the natural world but we don’t yet have the ability do perform perfect Biomimicry; and I fear that this no-combustion rule is letting perfect be the enemy of good.

Ann Baird: Great points Brian. The conversation with Jason went well and we discussed many things including combustion. Here is the summary as I understood it of the LBC reasoning for NO COMBUSTION:

  1. Combustion uses fuel which can change or run out at any time. Since the equipment (infrastructure) has quite an upfront cost it is not likely to be changed if the “green” fuel supply changes. This could lead to perhaps raw wood being used or crops grown to produce the fuel to justify the infrastructure.
  2. Particulates.  Using combustion for cooking or energy production releases other waste gasses and particulates into the home or the community. If everyone was doing this it would lead to reduced air quality in the environment or the home. Ever notice how having a propane stove in the kitchen makes everything in your kitchen slightly sticky over time…some of this comes from the burning of propane. There is also an increased risk of uncontrolled combustion (explosion) occurring from human error…no matter how good the system is engineered. (but in all reality the risk of damages from climate change from doing nothing is much greater and I totally hear your point about perfect being the enemy of good…very wise comment)
  3. What would nature do? This input comes from Biomimicry expert Janine Benyus. Humans are the only species to directly use fire for cooking, heating etc…all other creatures use chemical forms of energy from their environment…ie photosynthesis, etc.

For the LBC, the only exceptions are for laboratory bunsen burners, and possibly in the future the family hearth for cultural purposes…we evolved with fire…but using it to heat our homes is somewhat primitive.

We also chatted about resiliency and how we felt strongly about utilizing simpler technologies.

Although resistive cooking may not be the most efficient (in fact it’s pretty poor), it may ultimately be a better choice…so I think the LBC folks get your point about perfect being the enemy of good.

All in all we had to agree with Jason. We are now thinking about putting a few more solar panels on the roof and setting ourselves up for more solar cooking, but lots to consider.  We had an initial visit with a engineering PHD student from UBC who is interested in working with us to design and build an onsite digester if we go that route.

As far as our wood gassification boiler goes, we are thinking of getting an electric chipper, and pellet maker for converting boom into pellets for the stove. This still wont qualify under the LBC, but all agreed that is a good local solution.

We will be including these comments on the BCSEA at some point and our blog. thanks again Brian for your input.

Ann’s notes for presentation to the BC Assessment Board

February 18, 2010

Notes for Property Assessment Review Panel

Area: 01 Jurisdiction: 361 Highlands (SD61) Roll: 15016.160

Re: 3295 Compton Road, Victoria, BC V9E 1C8

  • Comments to Doug Burkinshaw
    • I think he has done a great job trying to fairly assess the home.
    • It is wonderful that the earthen architectural style is properly valued
  • Brief introduction to Eco-Sense – see info sheet
    • Features (see printout)
    • Costs (see printout)
    • Living Building Challenge, $35K Vancity grant, Enormous publicity
    • Policy work with BCSEA, municipal and provincial governments
    • Met with MLA John Horgan yesterday – regular contact as he is the Energy critic for the BC Govt.
  • BC Assessment challenges for the Eco-Sense Home (a few areas but wish to spend most of our time discussing the energy systems within the appraisal). Brief discussion of some of the minor issues resulting from our assessment. Important to note: NO similar case studies or home exist for comparison
    • Thickness of mass wall system – Doug and I have worked through this issue to fairly assess our 2 foot thick mass wall system.
    • Ability to obtain a mortgage on this style of sustainable home
      • financing is possible but only at large interest rate premium
      • Does this reduce assessment of the home?
    • Home only has composting “Waterless” toilets.  There are two bathrooms but only one is plumbed for a flush toilet.  Does this reduce assessment of the home?  Should it?
  • Valuation of the sustainable energy (SE) systems. Easy to determine costs…difficult to assess their BC assessment value.

Read more HERE:  BC Assessment pres

Letter to BC Premier Gordon Campbell regarding Sustainable Energy Tax Disincentives

Dear Premier Campbell,

As the Olympics come to a close I would like to bring to your attention another global competition.  The race to be the GREENEST building.  The Living Building Challenge is a visionary building certification program well beyond LEED platinum.  With over 70 global projects registered and only four completed, the Eco-Sense Home in Victoria BC is leading the way.

Eco-Sense embodies the principals of the Living Building Challenge.  This multi-generation affordable near net zero family home incorporates the best of modern technologies into an innovative modern example of earthen architecture.  see www.eco-sense.ca

The Eco-Sense home has had over 100 media events including TV, magazines, radio, newspaper, documentaries, Royal BC Museum displays, and books.  Tours have included policy makers, politicians, engineers, government officials, architects, builders, climate scientists, community leaders, groups of bankers, groups of building officials and planners, as well as school groups and the public.

As you can imagine a project of this magnitude has encountered many policy barriers.  Ann and Gord Baird, through their achievements, have identified many barriers while working towards the solutions.

Energy Policy is at the forefront of the identified barriers and we would like to share what we have learned from the front line of actually walking the sustainability talk.  Below are the main barriers to Eco-Sense becoming the most sustainable code approved family home in North America.

  1. The BC Hydro Net metering program is very poor and is lagging behind.  Eco-Sense IS a NET PROVIDER of electricity to BC Hydro on an annual basis.  If BC Hydro had a better net metering program which paid the real cost of all the sustainable energy sold to the grid, many of the cost barriers to sustainable energy and fully net zero living would be overcome.  BC Hydro is WAY behind as they only pay 8.2 cents per kWhr.  Quite embarrassing for a province that wishes to lead the way towards sustainability.
    • better policy in this area would support a distributed grid, energy conservation, community pride, and local energy resiliency.
  2. Removal of all the current tax disincentives to solar PV. (Here are a few of them)
    • HST on solar technologies – sustainable energy should be exempt from HST
    • Electrical permit fees on entire solar installations – leads to very large permit fees for individuals installing solar systems
    • increase in municipal taxation because of property value increases due to BC Assessment of all future energy energy production
      • Eco-Sense pays an extra $400 per year in municipal taxes because we generate sustainable energy (works out to $10,000 over the 25 year life cycle of the system)
      • Our Sustainable energy systems comprise 21% of the total cost of our home.  (see PDF link below for complete cost breakdown of the Eco-Sense home)

We recently discussed this issue with the BC Assessment appeal board, the BC Sustainable Energy Association (BCSEA), and our MLA; everyone agrees that this is wrong.  Solution involves changing the legislation with the BC Minister of Finance.

The climate science dictates that policy MUST encourage the people and industry to take BIG steps to move rapidly towards sustainability.  Most of the current GHG reduction policy involves encouraging baby step.

Ann and Gord Baird of Eco-Sense strongly encourage the Campbell Government to take bold steps forward on Energy and Taxation Policy to create the future we all desire, for our children, our citizens, our beautiful province and to showcase for the planet that BC is truly a leader.  Just think, BC could have the first certified “Living Building Project” in the World.

Please see this PDF of the features of our home.

We would also like to extend an invitation for a private tour of our home.


Ann and Gord Baird

Victoria, BC

Highlands Sustainability Task Force Report

Highlands Sustainability Task Force

42 recommendations submitted to Highlands council.  Read section on green building for policy on “Flush toilet ready” and “net zero zones”.  Lots of great stuff in this report.

Conversation on Conservation

Conversation on conservation

When you think of the things in our culture that are TABOO what comes to mind.  Cannibalism?  Incest?  How about conservation?  Or to put it bluntly; the transition away from a capitalist growth economy.

This is a taboo subject in the mainstream media and we simply need to go there.  It is encouraging for us that there are small pockets of people starting to talk about transitioning to a sustainable carbon free lifestyle and what this look likes.  It looks wonderful; and we would argue that this new life is what most of us dream about down deep in our core values.

The common misconception suggests that this fossil fuel free future means going backwards to a day without toilet paper, without joy, and endless grueling labour.  This profound misconception is not only wrong but could actually create the future we fear.

Read More Jan 2010 Conversation on Conservation