Software_Features_Banner

eToolLCD Data Update

eToolLCD Data Update

A host of new materials have been added to eToolLCD recently to enable even more design flexibility. As well as the new data, existing materials and energy processes have been updated also to achieve greater data consistency and accuracy. All the datasets are now based on AusLCI and the Ecoinvent 2.2 background modified with AusLCI inputs. Most figures for Global Warming Potential (GWP) are consistent with the previous background data with the exception of some outliers, key examples are listed below:
  • Timber data now includes the sequestration of carbon dioxide during the growth phase (which is then re-released into the atmosphere in end of life scenarios)
  • Copper and brass now using improved processing assumptions, decrease in global warming potential, increase in most other indicators
  • Glass fibre insulation has increased due to improved process assumptions
  • Natural polished stone has increased quite dramatically due to mapping electricity inputs back to carbon intensive Australian electricity
  • ABS, Nylon and Expanded Polystyrene impacts have all increased for GWP due to an update in processes (incumbant data was as old as 1990)
  • ​The land use figures have also changed quite a bit due to accuracy improvements in background LCI processes
We are literally in the thick of this update as I write this so still unsure of the changes at a building level. Our educated guess at this stage is any significant use of timber in a building will lead to a much greater saving in GWP compared to the older database. This may also make the benchmarks slightly tougher for some types of buildings (e.g. Residential).
Software_Features_Banner

eTool LCA Software Updates – Autumn 2014

eTool LCA for Any Project

We conducted a retrospective LCA on the harbour bridge a while back, which highlighted how versatile eTool LCA was.  It was clunky though.  Whilst setting up the harbour bridge project we had to answer questions in the eTool LCA interface like “Number of bedrooms”.  We weren’t quite sure how we were going to solve this little quandary once and for all.  There seemed to be an unmanageably large number of different types of structures with potentially unique functional attributes.  For example, in the OmniClass classification there’s 748 different “Facility Types”.  When you also add all the possible iterations of mixed type facilities we really started scratching our heads.  Why?  Here’s a few reasons:

  • The result was bigger than the biggest number that excel could calculate (1.79 x 10308)
  • If we provided the software uses with a drop down to choose from this list, the drop down would extend past he bottom of your screen, through the Earth, out of our solar system, out of the milky way and through a bunch of other galaxies.
  • If you could navigate through that list of different functions at the speed of light, and the one you wanted happened to be half way down the list, it would take you longer than the time between the big bang and now
  • The amount of data stored in that list would take your computer about the same length of time to retrieve the list from the internet

Anyway, we knew we needed another method.  We needed an ability to not only choose from the list of facility types, but enable custom combinations of these facility types in the one design.  For example, a mixed development with residential, retail and commercial space.

This feature also started us on our journey of BIM integration.  Thus far we’ve drawn on COBIE as our categorisation standard, but in the future we hope to map this to other standards so users can report however they see fit.  The flexibility of eTool LCA just exploded (without the clunkiness, or waiting until the next big bang for your list of facility types to download).

eTool LCA for Infrastructure

In our new list of possible design functions we have infrastructure elements such as roads, rail, air ports, bridges, stadiums etc.  We even have applicable functional attributes that users can choose for the appropriate infrastructure.  For example, a road designer may choose to measure their impacts per:

  • passenger transported
  • tonne of freight transported
  • workload unit (one passenger or 100kg of freight)
  • unit area of pavement
  • unit length of the road

Hopefully this drives some serious though about what the function of that infrastructure is, and how the movement of passengers or freight may be better done with lower carbon alternatives such as rail!  After all this is one of the beauties of LCA.

eTool LCA for Energy Generators

Another neat example of facilities that can now be assessed with eTool LCA is electricity generators.  Fancy running an environmental life cycle assessment of a wind turbine verse solar PV verses coal fired plant?  Knock your socks off!  The functional unit you’ll probably be choosing here is impacts per life cycle kWh generated.

eTool LCA for Data Centres

A little left field, but how to you compare the sustainability of data centres?  Have a go in eTool LCA!  You can choose from the below functional units to ensure you’re making fair comparisons between different options:

  • Annual data stored
  • Life cycle data stored
  • Annual data transmitted
  • Life cycle data transmitted
  • Net usable area

What next for eTool LCA?

For those who are rushing to check out the above functionality, bare in mind this is hot off the press and we’re yet to develop a library of templates that support these new types of construction entities.  This will come though, especially with the template validation functionality that is already helping our library grow.

In the mean time, software features continue to roll on.  The two big projects we’re working on at the moment is BRE IMPACT compliance.  We’re excited about this as it’s a third party verification system specifically designed for what eTool LCA does – LCA of Construction Projects.  Not only is this a big indication of the mainstreaming of LCA, it’ll also be really nice to have an official seal of approval on the accuracy of eTool LCA.

The other big project is a push on reporting.  We’re introducing a whole heap of cool new reports aimed at users to generate promotional and marketing ideas for their improved buildings.  Is this core to LCA, absolutely now.  Is it important to ensure that environmentally sustainable buildings proliferate?  Absolutely.  We don’t have our pulse on this globally but we hazard to guess the biggest impediment to truly sustainable buildings in Australia is a total disinterest within the real estate industry.  And eTool LCA is will hopefully spark this interest a little more by providing agents with really useful info to help them sell better buildings.

Past that, refer to our product roadmap which (although partially implemented) gives a good idea of where we’re heading longer term.

Software_Features_Banner

eTool LCA Software Updates – Summer 2014

EN15978 Compliance

The last few months have been hectic for our software development team. We brought the software into line with the European standard EN15978 – Sustainability of construction works – Assessment of environmental performance of buildings – Calculation method.  We undertook so eTool could be used to gain innovation credits in Green Star projects.  For out international audience, this is a environmental rating scheme managed by the Green Building Council of Australia.

Technically the update was a big challenge, EN15978 a very comprehensive standard with quite strict rules regarding how the LCA calculations should be conducted.  It’s a piece of work we planned back in 2012, we did need that little commercial push to undertake the change, and the opportunity to utilise eTool LCA for Green Star projects provided this.  We are really happy that we managed to complete this piece of work.  We really think the planet has a lot to benefit from through this standard, and hopefully through the use of eTool LCA.  Here’s some reasons:

  • EN15978 was written by CEN technical committee 350 who are also developing other standards to meet there overall mandate of delivering standards to holistically assess the sustainability of construction works.  This is really exciting.  It effectively draws a line in the sand and gives really solid guidance on how we should be assessing the buildings.  It includes social, economic and environmental considerations for sustainability.
  • A good Life Cycle Assessment is without doubt the best way to measure and improve the environmental performance of something.  This has been recognised by CEN TC 350 who have relied on it nearly exclusively for the environmental assessment of buildings.
  • CEN TC 350 also developed a standard for the assessment of building products.  These will be used by the new ECO EPD framework being developed in Europe which will align most of the major EPD Program operators.  Now this is exciting.  Finally, we have an international system that reports truly comparable data for construction products.  It’s equivalent to nutrition labelling for building products (substituting health info with environmental info).

All this means the stars are nicely aligning for low impact buildings.  There’s a huge opportunity to cut through the greenwash if industry uptakes this approach.  One of the things we love about this approach is it actually enables policy makers to set budgets in order to ensure we hit sustainability goals.  I’ve written about this concept and how it might be approached here.

Software Speed Improvements

Users during the last 12 months would have noticed that at times, particularly for very big designs, the software laboured.  It was getting pretty frustrating for our ops team who were working more and more on complex LCA models for large projects.  We’d delayed tackling this problem because it required a massive re-write of the back end.  There’s nothing worse than spending two months labouring on a software improvement project, then delivering the result which looks exactly the same!  It was a very nice change though, to give you an idea of the performance improvement, we had a large test design that was taking the best part of four minutes to save, now it’s taking just two seconds.  The big driver for this was actually to enable more features to be introduced to eTool LCA that would have otherwise slowed it down further.  There’s more coming!

Record Recommendations

This is probably  my favourite new feature.  It makes the job if modelling and tracking improvement ideas very easy.  I can honestly say this has enabled our operations team to significantly increase the research time we can allocate to identifying more improvement ideas.  Less time doing little admin tasks like copying and pasting data between eTool and spreadsheets, and more time focusing on reducing the impacts of the design.  All users need to do now is hit record, model the improvements, hit stop and every change to an impact due to that improvement will be recorded at different life cycle stages of the building.  And it’s recorded for every indicator too, so you can see how much carbon you saved verses how much money you saved.   I love using this feature.  Check it out.

Software_Features_Banner

eTool LCA Software Updates – Spring 2013

eTool is always busy in the background updating the libraries available to users.  Lately we’ve ramped up the activities in a big with with some major updates to our libraries.  Even more exciting is that we’re improving the functionality of eTool with some big software development projects.  I thought I’d take some time to update you.

Library Updates

Earlier in the year we conducted a large LCA study on a cutting edge development in the UK, One Brighton.  The study was commissioned by Bio Regional who run the One Planet Living sustainable living framework.  We will be publishing the results of this study before the end of the year.  During the modelling we adapted a pretty cool approach to modelling the UK Benchmarks where we morphed a number of different density buildings, based on the new build mix, to create a weighted average density and size building.  Our previous approach to this was to pick the most popular density building and adjust it’s size and other characteristics appropriately.  We liked the new approach so have also applied that to Australia.  This was timely as the density mix in Australia is also changing pretty dramatically as we embrace higher density living, particularly in Sydney and Melbourne (Sydney is now building more apartments and semi-detached dwellings than detached).  The new residential benchmarks are loaded up into the eTool Library read to compare your project against.  We’re also working on some office building benchmarks also, and looking into community buildings.  Watch this space!

Out templates library is also undergoing a bit of an overhaul.  There’s more to come but essentially we’ve be consolidating the current templates library and adding new templates where needed.  This will be an eternally evolving project and we have some really cool ideas about how users can share templates that we’re mocking up at the moment with implementation in mind.

Our materials, transport, equipment and energy databases are about to get an overhaul to.  You may have heard the GBCA has introduced credits for LCA.  Some of the indicators they’ve chosen weren’t being tracked by eTool so we’re in the process of updating this data.  Some interim updates have been performed including updating electricity grid coefficients to match the latest NGERs figures in Australia, and updates to some water grid figures (notably Perth to account for the increasing reliance on desalination).

Software Updates

Some big projects are now underway to take the eTool software to the next level.  See our product road map to get an understanding of the long term goals.  The focus is on aligning eTool with relevant international standards (in particular EN15978).  In the process we’re also fixing bugs along the way and generally improving the user experience.  Recent or impending improvements are listed below.

Functionality

Improved speed for the app.  You may have noticed that working on large designs the app started to labour a bit, or a lot if you were working on really big designs.  We’ve cut the save / clone time down by 75% which although is a good start is just the tip of the iceberg, we’re aiming to get a 95% improvement in performance in speed through a project that is revolutionising the back end of eTool.  I won’t go into the details, I’ll just say it’s a big project but is going to pay big dividends to users.

We’ve also changed the UI a little. Projects will soon be listed more conveniently (most recent on the top of the list when you log in).  There’s a big expansion in functionality for documenting project recommendations and our reports are about to get some serious attention also.

Bug Fixes

A few pesky bugs have also been fixed:

  • All design details now clone properly
  • Custom template details now clone properly
  • Reports on a design can be seen by all users accessing that design
  • Updates to certificate calculations to include PV generation and limit overall rating when gold savings aren’t achieved in both embodied and operational categories

 

Software_Features_Banner

eTool LCA Expressions

eTool LCA V2 introduced some pretty neat functionality that allows users to enter “expressions” into some fields in a similar way formulas are used in a spreadsheet. This is particularly useful for building operational energy templates, for example, based on building size or occupancy. We have used a third party calculation library to enable this functionality, the list of available operators and functions is available here.

This functionality has dramatically improved the ease at which we can predict operational energy in designs and we’re enjoying using it here at eTool. We will be adding more stored variables as time passes, watch this space. To learn how to utilise this functionality, please get in touch for some training.

We also have a number of variables that relate to the design and can be used in expressions. The list of these is provided below. The default values that are used in library template calculations before loading into a design, or when a variable is left blank. The full list of variables is here:

Brown Paper Background

eTool Residential Benchmark For Australia

Before getting into the nitty gritty, it’s important to understand the purpose of the eTool benchmarks, which is:

  • Establish a common measuring stick against which all projects are assessed so that any report is comparable to another (for the same type of project).
  • Create a starting point, or “average, business as usual case” from which to measure improvements.

The benchmarks are not an average of existing stock but rather an average of new stock. Hence any efficiency requirements etc in the Building Codes etc are taken into account. When comparing to the benchmark, the target is pretty simple. Effectively Australia has to drop it’s GHG emissions by about 90-95% on a per capita basis for us to become sustainable global citizens. With this in mind, what we should be trying to do is drop our building’s emissions by 95% against the benchmark to ensure the building is stabilising the climate.

Creating the business as usual benchmark is pretty complex. For residential buildings in Australia there is a broad density mix from detached through to apartments. This is the latest breakdown of the new dwellings density mix in Australia (from ABS) over the last two years:

DetachedSemi DetachedLow Rise ApartmentsHigh Rise Apartments
Proportion of New Dwellings61%13%7%19%

For each of these density types, eTool have formulated a BCA code compliant building. We have then created a nominal statistical mix of  floor areas to match the average new dwelling size in Australia (214m2). In this way we come up with a “dwelling” that is a mix of densities and matches the size of the average Australian dwelling.

A similar approach is taken for operational energy. In this case we first research the most up to date residential energy estimates for Australia.  This data comes from ABARE Energy in Australia 2012. It gives us guidance on the total energy used per household (existing housing stock) in Australia and also the fuel mix split (electricity, gas, wood etc). We then use other end use percentage estimates to determine where this energy is being used in the dwellings.  The most commonly quoted breakdown of household energy use in Australia is from the “Your Home Technical Manual” which is actually a reference to the “Energy Use in the Australian Residential Sector, 2008″.  This report is commonly referred to as the “Base line report”.  This report itself actually states:

The study identified a paucity of end-use data for residential energy use in Australia, particularly in regional areas. Some of the appliance energy consumption estimates used in this study rely on research that is 15 years old or, alternatively, on work undertaken in New Zealand. 

The study recommends an comprehensive end use energy monitoring program which we believe is being undertaken. Until the results are out we’re a feeling our way in the dark a little.  Not withstanding this, the study is useful to guide the decisions about where we’re using our energy. To verify the Base Line Report figures we also took some state government studies (eg Sustainable Energy Development Office in WA) and statistics from other countries (notably the BRANZ HEET study and also stats from the US). The largest unexplained discrepancy seems to be in the estimates for heating demand.

The Base Line Report suggests that 38% of total end use energy in Australia homes is dedicated to heating and cooling purposes.  This seems very high given the following facts:

  • The comprehensive HEET study from BRANZ in New Zealand (a much colder climate, and one dominated by heating requirements) only calculated 34% of end use energy dedicated to thermal performance.
  • The WA SEDO estimate for thermal comfort energy demand is also much less, hence it’s hard to believe the additional demand is due to cooling.
  • A large percentage of Australia’s population (Perth, Sydney and Brisbane) all live in quite mild or warm climates where heating would not make up more than 50% of the thermal control energy demand (and less still of the actual end use energy demand)
  • Heating is the most end use energy intensive thermal comfort mode as cooling typically utilises either apparent cooling methods (evaporative or fans) or heat pumps, both of which have effective Coefficient’s of Performance of 2.5 or more. This means for every one unit of energy input, 2.5 units (or more) of heat is dissipated of pumped from the dwelling when cooling. Heating on the other hand requires more energy than the actual heat load demand theoretically required to heat a space (or at least the same amount). This is mainly due to flue losses.

The high estimate in the Base Line Report may be linked back to the ABARE Energy stats which are also questionable. The Energy in Australia 2012 document from ABARE gives a biomass figure for residential energy use that equates to 6280MJ / household /annum.  When this is calculated in terms of mass of wood, it works out at 400kg of timber per household in Australia.  Even if one in every 5 houses (studies suggest it’s more like one in every 10) is using a wood heater that was their primary source of heat, that’s 2t of wood per annum they would need to be burning in order for the ABARE data to reconcile. To give you an idea, an average small box trailer full of wood is about 250kg. We’re not convinced there’s 2 million households in Australia receiving 8 trailers of wood per annum to heat their homes. The BRANZ HEET study further supports the proposition that ABARE have overestimated biomass consumption in the Australian residential sector.  BRANZ calculated that each wood heater uses 4,500kWh (one tonne) of wood per annum.

Without making any adjustments to either the end use demand figures, or the top down supply figures the numbers don’t reconcile very well. For example, trying to “fit” the biomass, gas and LPG energy into the end use break down “squeezes” electricity out of the hot water and space heating categories. There simply isn’t enough low grade heat requirements in dwellings to account for all the biomass. However, when we aligned the biomass use predictions with BRANZ, and adjusted the demand figures to better match some of the competing studies we got good reconciliation.

This also supports the total residential demand estimate in the Base Line Report which is quite a bit lower than the ABARE stats.

Once we knew the amount of energy the existing housing stock were using, we then determine how this would differ in new dwellings.  Some energy use would remain pretty static (eg appliance use and refrigeration). Lighting, hot water and heating and cooling have relatively new BCA code requirements focussed on energy efficiency. For these end categories appropriate adjustments were made to account for the newer technologies and associated demand.

Heating and Cooling (Thermal Control)

The heating and cooling energy requirements are the most complex, as there are very few stats on what equipment is being deployed in new houses. The NatHERS system does help this situation and we make an estimate of the deployment of heating and cooling technologies in the current housing stock as follows:

  1. Estimate the heating verse cooling loads for buildings in the top 20 populous NatHERs climate zones (85% of Australia’s population). This works out to be 60% heating and 40% cooling.  
  2. Estimate the efficiency of each type of heating and cooling technology
  3. Estimate the deployment of each type of heating and cooling technology
  4. Adjust estimates such that total energy consumption matches our adjusted ABARE figures and the split in thermal demand matches the NatHERs weighted average for Australia

This then informs our decisions about what people are likely to choose for new houses.  The summary is found in the following tables:

Electric Heat PumpElectric Fans or Evaporative Coolers
Existing Stock Cooling Demand50%50%
New Housing Stock Cooling Demand60%40%

Electric Heat PumpElectric RadiatorsGas FluedGas Internal HeaterWood Heaters
Existing Stock Heating Demand20%10%17%51%2%
New Housing Stock Heating Demand35%0%20%40%5%

For each major BCA climate zone or population centre then simply divide the NatHERs energy demand estimates for a 6 star dwelling for the building between these categories and apply appropriate efficiency or COP figures to determine what the end use energy demand will be.

Hot Water

The building codes have now banned the use of electric resistance storage hot water systems in all residential buildings apart from class 2 building (strata buildings). Some state governments also discourage the use of electric heaters in class 2 buildings. This has led to a huge shift from electric storage hot water heaters to gas, solar, and heat pump units. This is a great thing for reducing the carbon intensity of the delivered hot water to dwellings (see more explanation on hot water fuel types here).

Using the same reconciling procedure between the end use energy estimates and the adjusted ABARE data we get the following mix of fuel uses for meeting demand in Australian existing housing stock:

Fuel Contribution to Water Heating Demand of Existing StockFuel Contribution to Assumed Water Heating Demand of New Stock
Natural Gas and LPG77%79%
Electric15%13%
Solar8%8%

Note, this doesn’t imply that 77% of water heaters are gas fired, it implies that 77% of energy used by water heaters is gas. The difference is that gas water heaters have lower efficiencies than electric resistance heaters (99%) or heat pumps (approximately 270%). With a gas water heater, depending on the age of the heater, it may be as low as 50%, and won’t get much better than 85%. So the mix of heaters installed in existing buildings is actually more slanted towards electric.

New buildings will tend more towards gas due to the current BCA requirements. With this in mind, we’ve used the figures in the right hand column for the split in fuel use for new dwellings.

eTool V2 is here!

eTool V2 was dreamed up even before we released V1, I think the idea of continual improvement is ingrained in the eTool psychie! But getting to the point of actually rolling out V2 has been a pretty long process. Our first step of course was to prioritise the improvements which was quite a task.  Although we would love to press the magic button and fulfil the “holy grail” of sustainable design (3D optimisation of thermal performance and embodied impacts of materials) baby steps are required.  We asked you guys what you wanted to see; surveys went out to past clients who we have conducted LCAs for, and also our users (who are growing in number and geographical diversity every day).

The key enhancements that people flagged for us were:

  • More reporting functionality (particularly involving costs)
  • More environmental indicators (not just carbon and energy use)
  • More transparent user interface (simpler, clearer)
  • More templates, materials and equipment options in our libraries

So this is where we’ve been focussing our efforts. If you log into eTool V2, you’ll see many features aimed at tackling the above key enhancements, and we’re not done yet! We will be continuing development on V2  until September.

Here’s a quick summary of what’s been implemented:

  • A better materials categorisation system and over 50 new materials to make selection easier.
  • Ability for materials manufacturers to submit their own materials for listing in eTool LCA.
  • Addition of new environmental impact categories (see this listed in the current release, we’re currently populating the data bases so these will become functional over time).
  • Default costs for all materials, equipment, grids and energy sources. As well as the existing detailed carbon and energy metrics, you now also get an LCA cost estimation by only entering in quantities of materials, equipment run time and operational energy.
  • Financial performance comparison chart for buildings to highlight maintenance and operational cost benefits or excesses.
  • Improved user interface for templates, and allowing “nested” templates for much faster LCA projects.
  • Share LCAs with other users.
  • More transparent and editable distance calculations for materials.
  • Annual energy cost summary.
  • Additional grids (all Australian grids now entered).
  • Expression builder for some fields e.g. you can now build a template for operational energy that takes the number of occupants and fully enclosed building area into consideration within a formula to calculate your energy demand.
  • Improved calculations and coefficients for better accuracy.
  • Ability to calculate operational water consumption.

And what’s still to come before we wind up development in September:

  • More reports!
  • Additional Environmental Impact intensities (e.g. embodied water, toxicity etc)
  • Regional LCI databases (data availability / access pending).
  • Ability to add custom distribution grids.
  • Still more templates, materials, equipment, distribution grids etc.

This article was written by Rich

 

eTool V2 Part 1 Complete

Our first step of course was to prioritise the improvements which was quite a task. Although we would love to press the magic button and fulfil the “holy grail” of sustainable design (3D optimisation of thermal performance and embodied impacts of materials) baby steps are required.

We asked you guys what you wanted to see; surveys went out to past clients who we have conducted LCAs for, and also our users (who are growing in number and geographical diversity every day).

The key enhancements that people flagged for us were:

  • More reporting functionality (particularly involving costs)
  • More environmental indicators (not just carbon and energy use)
  • More transparent user interface (simpler, clearer)
  • More templates, materials and equipment options in our libraries

So this is where we’ve been focussing our efforts.
If you log into eTool V2, you’ll see many features aimed at tackling the above key enhancements, and we’re not done yet! We will be continuing development on V2 until September.

Here’s a quick summary of what’s been implemented:

  • A better materials categorisation system and over 50 new materials to make selection easier.
  • Ability for materials manufacturers to submit their own materials for listing in eTool LCA.
  • Addition of new environmental impact categories (see this listed in the current release, we’re currently populating the data bases so these will become functional over time).
  • Default costs for all materials, equipment, grids and energy sources. As well as the existing detailed carbon and energy metrics, you now also get an LCA cost estimation by only entering in quantities of materials, equipment run time and operational energy.
  • Financial performance comparison chart for buildings to highlight maintenance and operational cost benefits or excesses.
  • Improved user interface for templates, and allowing “nested” templates for much faster LCA projects.
  • Share LCAs with other users.
  • More transparent and editable distance calculations for materials.
  • Annual energy cost summary.
  • Additional grids (all Australian grids now entered).
  • Expression builder for some fields e.g. you can now build a template for operational energy that takes the number of occupants and fully enclosed building area into consideration within a formula to calculate your energy demand.
  • Improved calculations and coefficients for better accuracy.
  • Ability to calculate operational water consumption.

And what’s still to come before we wind up development in September:

  • More reports!
  • Additional Environmental Impact intensities (e.g. embodied water, toxicity etc)
  • Regional LCI databases (data availability / access pending).
  • Ability to add custom distribution grids.
  • Still more templates, materials, equipment, distribution grids etc.

eTool Again Leading Building LCA Software

Since the release of eTool V1 we have been receiving great feedback regarding the software which has enabled us to prioritise how to improve it further.  We have finally begun work on Version 2 which will further cement eTool’s leadership in sustainable design software for the built form.

Once again we have commissioned Phobos Consulting to undertake this work and look forward to the improvements they will be making to the excellent interface they have already developed for eTool.  In the Phobos consulting development team we’re excited to have Jeremy Hadfield back on eTool and welcome Matt Kocaj to the project who is already proving very helpful.

Specifically, we have highlighted for following key areas for improvement:

Functionality:

  • Improved interface to simplify the way designs and templates are edited
  • Default costs for all materials, equipment and energy supply sources to facilitate very easy LCA cost calculations
  • More flexibility for entering custom transport distances (not relying on Australian postcodes)

Accuracy:

  • eTool have hired Ben Rose to conduct a third party verification on the eTool inputs, scope and calculations.  eTool is delighted to be working with Ben who has a wealth of knowledge and huge credibility in the carbon analysis world.  Read more about Ben here
  • Introduction of numerous LCI databases to increase the flexibility of eTool and allow sensitivity analysis of results (between database sources)

Reporting:

  • A one page building performance summary certificate
  • Building cost verse time which will demonstrate financial payback periods for sustainability features
  • Annual energy cost tables (and breakdown into operational energy categories)
  • Sustianibility spider (radar) charts to see performance of other environmental impacts (not just carbon and energy).  We are prioritising toxicity and land use for Version 2 and hope to expand on this dramatically in Version 3 and beyond