Environmental

Emissions & Energy

Energy use, specifically electricity use, is the main driver of our scope 1 and 2 GHG emissions. From 2018 to 2019, our total energy use decreased by 2%, driven by a reduction in energy derived from non-renewable energy sources. Additionally, our total GHG emissions decreased by 22%. In order to continue our GHG reductions, we have set a corporate target to reduce Scope 1 and 2 GHG emissions by 50% for buildings Silicon Labs has operational control of by the end of 2025 from baseline year 2018.

Our emissions and energy data from 2018 to 2020 for our Austin headquarters were as follows:

 

2018

2019

2020

Energy Use - Total (GWh) from Grid

8.5

8.3

7.5

Energy Use - Percent from Grid

100%

100%

100%

            Renewable Energy (GWh)

3.6

3.6

3.6

            Renewable Energy (Percent)

42%

43%

48%

            Non-Renewable Energy (GWh)

4.9

4.7

3.9

            Non-Renewable Energy (Percent)

58%

57%

52%

C02e (metric tons, scope 1&2)

3,328

2,726

2,231

            Scope 1

86

153

62

            Scope 2

3,242

2,573

2,169

Other Significant Air Emissions (NOx, SOx, etc.)*

1.42

1.36

1.29

*Verified by an independent third party.

**Other significant air emissions include NOx, SOx, etc. and are estimated based on approximate usage of boiler and generator equipment.


Water Usage

We primarily use water for hygiene purposes and human consumption. Our water conservation efforts include low-flow bathroom facilities and reduced landscaping water needs.

Our water data from 2018 to 2019 for our Austin headquarters were as follows:

 

2018

2019

2020**

Water use (million liters)

9.3

9.5

3.0

** Office usage was significantly limited in 2020 due to Covid-19

 

Waste 

We started tracking total waste generated in 2019. In 2019, we achieved a 61% landfill diversion rate, with more than 99% of our waste generated being non-hazardous waste. In the last year, we have implemented measures to improve our diversion rate such as ensuring higher availability of recycling options, providing improved signage of recyclable material and donating reusable material to local causes.

Our waste data from 2018 to 2019 for our Austin headquarters were as follows:

 

2018

2019

2020

Waste water (million liters)

9.1

9.2

3.0

Landfill (tons)

Not recorded

90

57

Landfill diversion rate

Not recorded

61%

85%

Hazardous Material Waste (tons)

0.15

0.14

0

Any and all e-waste generated at Silicon Labs is disposed of in accordance with the Waste and Electronic Equipment (WEEE) Directive.

Governance

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