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GEKA SUSTAINABILITY - SUSTAINABILITY QUIZ

Do you know …


...coal discovery has been a key lever
of the industrial era?

Sometimes perception and fact-based information are not
aligned if we consider the life cycle of our energy sources. The source
of our electricity is a key element in our array of actions to limit
climate change to 1.5°C.

Do you know
the first source of energy used
to produce electricity globally?

Choose your answer!

Coal represents the vast majority of electricity source in the world with a steady basis of 38%.

Electricity generation by source, World 1990-2018

(Source: iea.org - Electricity generation by source, World 1990-2018)

 

As you can see on the graph below, electricity and heat represent the main contributors to CO2 emissions.

Greenhouse gas emissions by sector, World 1990-2016

(Source: ourworldindata.org - Greenhouse gas emissions by sector, World 1990-2016)

 

DID YOU KNOW ... ?

In terms of CO2, coal represents the worst-case scenario in comparison to other types of energy used to create electricity. The following graph shows the content of CO2 per KwH of electricity produced (ADEME source), including the upstream part of the sector (from raw material extraction to electricity creation). 

We must be careful never to run out of electricity. We use it daily and consider it a given. However, we should be careful when comparing different electricity sources. 

If we consider a scenario with only renewable energy sources like solar panels, wind, and water, we know that they won’t be sufficient. Indeed, we may experience blackouts during peak demand and not have enough demand whilst they are available (very sunny summer lunchtimes for exemple). These renewables sources are intermittent and not reliable because it is not possible to plan consumption.

If we consider a second scenario with a mix of renewable energy sources and maneuverable sources like coal or gas power plants, the electricity available on the grid can fit demand, but the CO2 mix will be higher than when using just renewable energy. 

Finally, if we consider a third scenario with a mix of renewable energy sources and maneuverable sources like nuclear power plants, the electricity available on the grid can fit demand with a lower CO2 mix than with coal or gas power stations. 

 

Amount of g CO2/kWh per source of electricity
(Source: ADEME.fr)

FALSE

WHY?

See the answer!

RIGHT

WHAT CAN YOU DO AS INDIVIDUAL?

See the answer!

WHAT CAN YOU DO AS INDIVIDUAL?

See the answer!

At the individual level:

- The best energy is the one which is not used. Decrease your inside temperature by 1°C and put on a sweater. In summer time, setting the air con to 26°C will decrease your air con system consumption by 40%

- If possible insulate your home to avoid energy waste

- Select electricity which has a low carbon content and, if possible, renewable energy

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