# Environmental impact of Big Tech

The environmental impact of Big Tech is a phenomenon in which many aspects of Big Tech contribute to negative impacts on the environment and climate change. In the big data age, technologists and people in general find it valuable to view emerging technologies with a critical lens, one of which is geared toward the environment. As these emerging technologies become more popular, they consider the extent at which they contribute to changes in the environment and whether they are inherently positive or negative.
A 2022 report from Greenpeace and Stand.earth highlights the technology sector's rapid growth, driving a significant increase in electricity consumption, projected to rise by over 60% between 2020 and 2030. This increase in energy usage is coupled with a rise in carbon emissions attributed to the sector's heavy dependence on fossil fuels. While some Big Tech firms have committed to transitioning to 100% renewable energy for their operations, this commitment has not yet extended to their supply chains. Seven out of ten ranked consumer electronics brands have committed to achieve 100% renewable energy across their own operations by 2030, with Apple, Google, and Microsoft already achieving this goal. In 2023, Big Tech accounted for approximately 4 percent of global greenhouse gas emissions, surpassing those of the aviation industry. Google and Microsoft each consumed 24 TWh of electricity in 2023, more than countries such as Iceland, Ghana, the Dominican Republic, or Tunisia.

## Background

Big tech is a term commonly used to refer to largely growing technologies and companies. Google, Apple, Amazon, Microsoft, Netflix are notably some of the largest companies. One area of concern that has caught the eye of many people who observe these technologies is the carbon footprint that their data centers leave as well as their supply chain carbon emissions. Because these technologies continue to grow, so do the effect they have on the climate and society which has prompted scientists to take a further look into the exact effect that they are making.
This has inspired the area of green computing which hopes to promote sustainability in big tech. Big tech companies have been in competition to remain fast and up to date. Because of this, they seek to have the fastest internet speeds and largest repositories of data to provide their users with the most personalized and appealing experiences. For example, in 2020, Facebook announced that they would invest in undersea cables in Latin America and sub-Saharan Africa to improve internet speeds.
In addition, many companies similarly expand their resources to use large data centers, undersea cables, and other technological extensions in order to increase the quality of their products. Users benefit from these features, but they also leave an effect on the world's climate.

## Carbon emissions

In 2021, the big technology sector produced between 2 and 3% of the world's carbon emissions according to the UN's environment program. This number is comparable to global aviation. A source of this is that these companies, such as Google and Meta who are large contributors, are very reliant on carbon-intensive supply chains due to their enterprises being located in countries reliant on fossil fuels. Some example of such countries very dependent on fossil fuels are Oman, Qatar, Kuwait, Saudi Arabia, and Brunei Darussalam.
Electronics Hub, an organization dedicated to providing electronics knowledge for free for electronics enthusiasts, carried out a study on this using publicly available ESG (Environment, Social and Governance) and CSR (Corporate Social Responsibility) reports to find the total direct and indirect carbon emissions figures for 100 of the largest technology companies, ranking them from highest to lowest polluting within the industry. They found that Samsung has the largest carbon footprint of any major company in tech. Specifically, they emit 20.1 million metric tons of CO$_2$ per year. Amazon emits the most of the "Big Five" tech companies, with 16.2 million metric tons of CO$_2$ produced each year. Per employee, Taiwanese semiconductor manufacturer TSMC emits the most, with 209.4 metric tons of CO$_2$ produced for every member of their staff. Onsemi, a US based semiconductor firm, produces the most carbon relative to their earnings, with 405.5 metric tons of CO$_2$ produced for every one million dollars in revenue.

## Data centers and the cloud

The cloud is a term used by many of these big tech companies as a virtual space in which a lot of data is kept. The virtual term intuitively has made it seem that the cloud is not something physical that can harm the earth. However, recent studies have shown that the "cloud" is kept alive by very large energy-consuming data centers around the world that do have an impact on climate. Based on the U.S. electric metric, storing 100 GB of data in the cloud every year would produce 0.2 tons of CO$_2$.
As more and more operations are managed in the cloud, the energy required to process and perform those operations is generated by fossil fuels. Studies have shown that over 2700 colocation centers across the US consume vast amounts of electricity and water while providing few human jobs required for operation. Many of these locations are also susceptible to drought such as Dallas and the Bay Area. Anywhere from 3-5 millions gallons of water per day is required to provide energy that allows the centers to operate. This water would be enough for 30,000-50,000 people.
Data from the International Energy Agency shows that centers use 200 TWh (one trillion watt hours) of electricity and generate 3.5% of the global greenhouse gas (GHG) emissions per year. There are three factors that influence the carbon footprint of these data centers.
* Data centers require electricity to run servers. However, the location of the data center impacts how much emissions are generated by electricity use. Data centers located in areas that have adapted to green power will have a much lower carbon footprint than those located in areas that haven't.
* Data centers need water to cool the servers and also can create large water run off. Studies have shown that data centers use up to 5 million gallons of water per day.
* Lifespan of equipment determines the frequency of replacements. Every hardware replacement in the colocation center generates a carbon footprint for its sourcing, production, and transportation.

## Locations

Number of Data Centers in Various Areas :
| Country | Number of Data Centers |
| US | 2701 |
| Germany | 487 |
| UK | 456 |
| China | 443 |
| Canada | 328 |
| Australia | 287 |
| Netherlands | 281 |
| France | 264 |
| Japan | 207 |
| Russia | 172 |
| Mexico | 153 |
| Brazil | 150 |
| India | 138 |
| Poland | 136 |
| Italy | 131 |
The energy consumption of data centers is rising exponentially. Data from the United States Data Center Energy Usage Report shows that in 2014, data centers in the U.S. used around 70 billion kWh–which is 1.8% of the nation's total electricity consumption. The report also shows that the data center electricity use increased by around 4% from 2010 to 2014, and energy use is expected to increase. These estimates claimed that the US data centers are expected to use 73 billion kWh in the 2020s.

## Devices and e-Waste

Data centers, applications, and architectures are often targeted when analyzing the environmental effect of big tech. However, another substantial source are devices. There are nearly 700 million old "hibernating" mobile phones in Europe alone which amounts to 14,920 tons of gold, silver, copper, palladium, cobalt and lithium. E-waste is also a big source of climate impact. When broken or unwanted electronic items are dumped into landfills, toxic substances such as lead and mercury can leach into soil and water. Another consideration is that electronics also contain valuable non-renewable resources such as gold, silver, copper, platinum, aluminium and cobalt. Because these are thrown away with no attempt of recycling, a lot of precious materials are also wasted.
The UN currently leads the Global E-waste Statistics Partnership which tracks the amount of e-waste in the world. It categorizes e-waste into: temperature-exchange equipment (refrigerators, air conditioners), screens and monitors, lamps, large equipment (washing machines, copiers), small equipment (cameras, smart speakers), and small IT and telecommunications and equipment (phones, routers).
Currently, the amount of e-waste is incalculable due to the fact that it is undocumented. Due to the short life cycles of electronics, we need to replace them frequently. However, they are rarely disposed in a way that would limit its impact on the environment.
Manufacturers also discourage repairing devices by consumers or third parties due to privacy and safety. Along with that, there is the phenomenon that even if repair were easy and accessible, people would still be likely to move on to a new device instead of fixing the one they have. The right to repair could potentially fix the problem of e-waste.

## Big tech initiatives

Some of the largest tech companies have vowed to combat climate change. Some have made plans to reach net-zero carbon emissions. Amazon specifically has announced that they aim to reach net-zero carbon emissions across their operations by 2040 by investing in renewable energy, scaling solutions, and collaborating with partners to broaden their impact. They are currently on a path to powering their operations with 100% renewable energy by 2025. Along with Amazon, Apple, Dell, Google, HP, Microsoft, and Nvidia have claimed to reduce their Greenhouse Gas Emissions by 2030. All of these companies seek to invest more into renewable energy. In general, most of these plans follow the outline of hitting three main goals: energy transition, supply chain management, and decarbonization.

### Decarbonization and Energy Transition Plan

Companies have instituted plans to curtail absolute GHG emissions within their supply chains. They have also claimed that they will use renewable energy in self-operated stores and facilities.

### Supply chain engagement

Companies have identified the importance of supplier engagement in achieving emission reduction goals. Brands have taken measures to intervene with supplies by providing training, incentives, and other financial support. These brands help suppliers set climate targets.

### Energy transition

Companies are seeking to procure renewable energy for use in their supply chains. Some companies such as Apple and Google have reported joining the Asia Clean Energy Coalition.

### Reducing e-waste

Companies have ideated designing products so that precious metals are easier to extract as well as creating an "eco-label" system. Companies such as Dell have suggested that half of the materials it uses will be "recycled or renewable" by 2030.

### Creating a circular economy

The circular electronics partnership is a group of companies that have committed to creating a circular economy. A circular "operating system" allows a product to be collected at the end of life, recovered through any of the R-strategies, and then circulated back into the economy. The Circular Electronics Partnership has gathered to define what a circular product means and how to accomplish it with the goal of tackling e-waste. Their roadmap consists of:
* Design for circularity
* Drive demand for circular products and services
* Scale responsible business models
* Increase official collection rate
* Aggregate for reuse and recycling
* Scale secondary material markets
By motivating consumers to buy back products as well as purchase circular products, less electronics will be dumped into landfills. Leaders from many different companies have come together to design this roadmap. The roadmap sets objectives for key areas of the electronics value chain, from design to sourcing and manufacturing through to reverse logistics and recycling. This is the first-time experts, business leaders and global organizations will set a vision and roadmap committing to a circular economy for electronics by 2030 and co-design solutions around this topic. This initiative is led by the World Business Council for Sustainable Development and the World Economic Forum.

## Gaps in improvement

While companies have become aware of the issue at hand, many consumers critique potential gaps in their plans as to improve the situation. These gaps have been identified to lie in unambitious decarbonization targets, an unclear roadmap, insufficient financial support and incentives, unbundled renewable energy certificates dependency, and a collaboration gap. The collaboration gap refers to the absence of a leading cause amongst unified members to achieve decarbonization.