eTool’s End of the Year 2021 Message

      Some of the achievement eTool celebrates in 2021:

  • It is encouraging to see the construction industry response this year towards the net zero carbon goal. More and more people from all over the world realize now how crucial it is to reduce carbon emissions.
  • Our customized LCA tool for the construction industry gets more robust and dynamic each year which makes it easier to use and improves consistency aligned with international standards and technical requirements. The tool is constantly reviewed by specialized security teams as we expand our global presence with government agencies and large enterprise organizations.
  • We are recognized for our integrity, teamwork and passion for the environment. Throughout the year we have supported technical working groups in different infrastructure and buildings rating systems as well as government regulations. We also held various webinars and produced articles to share our knowledge with our clients, partners and industry professionals.
  • eTool has partnered with a global company to accelerate the adoption of life cycle design in construction and refurbishment projects aiming to improve the quality of life in balance with the planet.

Some other achievements s eTool celebrates this year:
eTool Community: 

  • We gained over 1300 new users
  • We modelled 1,720 New Projects
  • We tested 3,589 Design Scenarios
  • Our LCD Coaching team certified 317 Designs.

Services Team: 

  • We serviced 66 New Projects across a huge range of infrastructure project types and building typologies
  • We tested 1,425 Design Strategies with hundreds of thousands of tonnes of CO2 savings potential presented to clients
  • We are experiencing large increase in interest for our Life Cycle Design services with a focus on reducing carbon.

Software development highlights include: 

  • RapidLCA pilots run successfully with Witchcliffe Eco Village, City of Vincent and Canberra Low Carbon Housing Challenge
  • We implemented the new “Scenarios” modelling functionality
  • We improved EPD functionality including Excel copy paste and importing data from Excel
  • We introduced Specialist Hotseat and External Specialist seats for organisations managing large portfolios of assets.
  • We are on the right track towards much more achievements in 2022 and are confident to serve the planet in a more effective and productive way.

We celebrate each year as we maintain a very high customer retention rate at the same time we expand into new markets and different regions. Thank all our clients for the support and contribution to transition the industry into a low carbon future.

Yours sincerely,

eTool team.

Metas de redução de impacto ambiental

As emissões globais de CO2 na construção civil são responsáveis por 38% ou seja 9,95 Giga toneladas correspondentes a energia relacionada  à indústria da construção civil. 


Em 2019 as emissões atingiram o nível mais alto já visto, de acordo com o último relatório Relatório de Situação Global 2020 para Edifícios e Construção

No entanto, em 2020 com a pandemia, houveram muitas paralisações que ajudaram na redução que será contabilizado no próximo relatório anual. Oportunidades apareceram para incentivar a renovação de edifícios e padrões de desempenho para edifícios recém-construídos, assim ajudando a reduzir também as emissões e promover a sustentabilidade no setor. Governos priorizam estímulo após Covid-19 para edifícios de baixo carbono.
50% das emissões diretas e 60% das emissões indiretas deverão ser reduzidas até 2030, para que atinja a neutralidade climática proposta pelo tratado de Paris (COP 21) até 2050. Essa redução equivale a 6% ao ano até 2030. ¹

Emissões no Brasil

No Brasil as emissões em 2019 foram 2,17 GtCO2. Que condiz 9,6% a mais que em 2018, conforme estudo feito pelo observatório do clima, Sistema de Estimativas de Emissões de Gases de Efeito Estufa (SEEG)5. De acordo com esse resultado, o Brasil ocupa a sexta posição no ranking dos países que mais polui a atmosfera.³

No setor de processos industriais de materiais para construção civil contabilizou 99,1 MtCO2e. Equivalente a 5% das emissões brutas nacionais. Houve uma queda de 2% comparado com o ano anterior.  As principais fontes dessas emissões são da produção do setor de cimento, ferro-gusa e aço. 4


Exemplo: Edifício Comercial

Área total construída 10.000 m²

Vida útil estimada = 80 anos

Cenário Atual – Prática de Mercado

Total de emissões em 80 anos = 20.000 tCO2

Total de emissões por m2 (80 anos) = 2.000 kg CO2 / m2

Total de emissões por m2 por ano = 25 kg CO2/ano/m²

Proporção dos impactos:

  • Impactos Operacionais – 50% (Energia, Água)
  • Impactos Incorporados – 50% (Materiais, transporte, construção, manutenção e fim de vida)

Impactos ao longo de 80 anos em toneladas de CO2:

AnoOperacionalIncorporadoTotal Emissões

Cenário Proposto 1

  • Redução do impacto incorporado = 60%
  • Redução do Impacto Operacional = 100% 
    • Net Zero Carbono Operacional através de Geração / Injeção energia na rede.

Cenário Proposto 2 

  • Redução Impacto Incorporado = 60%
  • Redução Impacto Operacional = 100% 
    • Net Zero Carbono Operacional através de Geração / Injeção energia na rede
    • Excesso de geração é injetada na rede e gera crédito de carbono para o projeto
    • Compensação com créditos de carbono (Carbon offsets)
AnoOperacionalIncorporadoCrédito de CarbonoTotal Emissões

Cenário Proposto 3 

  • Redução Impacto Incorporado = 60%
  • Redução Impacto Operacional = 100% 
    • Net Zero Carbono Operacional através de Geração / Injeção energia na rede
    • Excesso de geração é injetada na rede e gera crédito de carbono para o projeto
    • Maior capacidade de geração, dispensa uso de créditos de carbono.
AnoOperacional (Crédito)IncorporadoTotal Emissões


Emissões do setor de construção civil atingiram recordes em 2019 – relatório da ONU


Brasil é o sétimo maior emissor de CO2 do mundo. As emissões caíram ou aumentaram?

Agropecuária foi responsável por 73% da emissão de CO2 do Brasil em 2019

Emissões de CO2 caíram em 2,4 bilhões de toneladas devido à pandemia

Gases de Efeito Estufa 2020

How to design a low carbon building

When it comes to designing your dream green home, there’s a lot to consider, are you going: carbon neutral, net-zero, off the grid, energy efficient, high performance or sacrificially sustainable?

With so much to think about, people often get hung up on the finer details like specific solar system sizes, rainwater harvesting and wooden fixtures and fittings, leaving the sustainable design to their architect or engineer.

But we’re here to tell you, it’s really not that hard! Once you start thinking about what low carbon is really about,  you can put these simple ideas into place and influence your final, sustainable design.

We work with low carbon designs everyday and put together a few keys points that can make a huge difference to the overall footprint…

1. Use life cycle design philosophy

2. Make it financially attractive

3. Design for the future…make it last

4. Make it functional

5. Choose quality over quantity

6. Use low embodied energy materials

7. Remember the 3 R’s

8. Think local, but not always

9. Make it climate sensible

10. Don’t land in hot water with your energy bills

11. Get a refresher on renewable energy

12. Low carbon doesn’t always mean sustainable…


Download our complete guide to low carbon building design!

Check back soon for more information about choosing locations, deciding about material distance and transportation and finding out whether solar PV really is that sustainable.

Driving change in retail construction

Over the last few months, we’ve been working with conscientious building company Interface Constructions who really ‘walk the talk’ when it comes to marrying sustainability and the retail sector. With a strong environmental ethos driven by director Marc Masci, they are certainly leading the way, and to our knowledge are the first builders in Australia to offer carbon offset construction services to the retail industry.

Marc became interested in understanding the embodied carbon related to his work and has been using eTool LCA to measure all of his projects, both past and present. Since our first project with Marc, Interface have implemented a carbon management program and will be using eTool during the design phase to lower the carbon impact of his future retail projects.

Partnering with not for profit Carbon Neutral, Marc has already offset 20 tonnes with Australian native tree planting projects and will be featured as their Carbon Hero of the month in February.

For more information about Interface Constructions’ work with us, click here.


Helping retailers become carbon neutral

Everyday more and more businesses are going carbon neutral to help “give something back” to the environment as well as increase the value of their products and services. Pushing the boundaries of sustainable design in the retail space is Interface Construction who have implemented a carbon management program to enhance their business operations in retail fit outs.

With sustainability an established part of the business, many environmental practices were already in place, for example using sustainable certified materials, participating in the process of materials reuse with manufacturers, reducing waste due to careful planning and implementation and recycling onsite. The next step was to quantify their carbon footprint in order to compare and improve their service.

An eTool Life Cycle Assessment was conducted on one of Interface Construction’s jobs for ISV to firstly measure greenhouse gas emissions. The project included retrofitting an ensuite, kitchen and installing new joinery items.

With the core business objective of being carbon neutral in mind, the LCA report supported Interface Constructions in making decisions to avoid generating emissions. We identified that the transportation of trade staff to and from site was a large component, so recommended optimising visits onsite to help reduce overall carbon emissions. Material use is also a big factor, representing 60% of the carbon footprint; but by increasing the use of recycled timber and particle board, savings of 400 kg CO2e could be achieved.

Low carbon design principles were discussed during the Life Cycle Assessment process that could further reduce the impact of the fit out:

  • Increase the design life of the fit out with smart design and enabling retrofitting
  • Use of polished concrete floor in place of tiles
  • Designing for disassembly for future reuse

Operational Energy was not modelled as part of this project, however we believe that considering this area during a fit-out could lead to significant environmental and cost benefits for the building owner through energy efficiency measures.

Once all the recommendations and measures have been implemented, Interface Construction will be them able to offset the residual GHG emissions, a total of 1,663 kg CO2e, to bring this job to carbon neutral status.

If you have any questions regarding the use of cost effective LCA for quantifying, comparing and improving environmental and cost impacts or would like some low carbon design training, please contact us.


This assessment was conducted by Henrique Mendonca.

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