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How Green is Your State or Province?

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In countries where energy is plentiful, most people don’t think twice before plugging into the grid.

Whether it is for a simple top up for your smartphone battery at the airport or the continuous energy chug of household appliances, it’s easy to take the electricity we use for granted.

But do you know where your electricity comes from – and whether it is green or not?

Drilling Down by State and Province

Today’s maps come from Reddit users Dr_Engineerd and PaulsEggo, who have used data from national energy administration agencies for the U.S. and Canada to show what percentage of electricity generated in each state or province is green.

Let’s start with the map of the United States:

How Green is Your State?

The above map combines electricity generation for all renewable forms of energy (such as solar, wind, geothermal, or hydro) with nuclear, which is considered a sustainable energy source by many experts.

The top five states are as follows:

RankState% of green energyTop energy source
#1Vermont99.6%Hydro
#2Washington85.5%Hydro
#3Idaho81.8%Hydro
#4New Hampshire77.0%Nuclear
#5Oregon75.1%Hydro

Vermont leads the way with an impressive 99.6% mix for electricity generated. Also notable is New Hampshire, which makes the list thanks to its heavy usage of nuclear – the state’s Seabrook nuclear plant (1,244 MW) is the largest individual electrical generating unit on the New England power grid.

Now, here are the bottom five states:

RankState% of green energyTop energy source
#47Kentucky6.9%Coal
#48Indiana6.2%Coal
#49Rhode Island4.8%Natural gas
#50West Virginia4.6%Coal
#51Delaware1.6%Natural gas

West Virginia, Kentucky, and Indiana still get the majority of their electricity from coal.

That’s not to say states like Indiana have not been investing in green power – the state actually ranks 12th in the U.S. for wind capacity. It’s just not enough to make a dent in the larger energy mix.

A Look Up North

Finally, here’s a similar look, but this time at Canadian provinces and territories:

How Green is Your Province?

Regions like British Columbia, Manitoba, Yukon, Newfoundland, and Quebec are known for their hydro power – all get over 85% of their electricity from hydro alone. Meanwhile, Prince Edward Island gets the vast majority of its power from wind.

On the flipside, the only three provinces or territories below the 20% green threshold are Alberta, Saskatchewan, and Nunavut.

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Energy

Charted: The Safest and Deadliest Energy Sources

What are the safest energy sources? This graphic shows both GHG emissions and accidental deaths caused by different energy sources.

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Safest energy sources shareable updated

Charted: The Safest and Deadliest Energy Sources

Recent conversations about climate change, emissions, and health have put a spotlight on the world’s energy sources.

As of 2021, nearly 90% of global CO₂ emissions came from fossil fuels. But energy production doesn’t just lead to carbon emissions, it can also cause accidents and air pollution that has a significant toll on human life.

This graphic by Ruben Mathisen uses data from Our World in Data to help visualize exactly how safe or deadly these energy sources are.

Fossil Fuels are the Highest Emitters

All energy sources today produce greenhouse gases either directly or indirectly. However, the top three GHG-emitting energy sources are all fossil fuels.

EnergyGHG Emissions (CO₂e/gigawatt-hour)
Coal820 tonnes
Oil720 tonnes
Natural Gas490 tonnes
Biomass78-230 tonnes
Hydropower34 tonnes
Solar5 tonnes
Wind4 tonnes
Nuclear3 tonnes

Coal produces 820 tonnes of CO₂ equivalent (CO₂e) per gigawatt-hour. Not far behind is oil, which produces 720 tonnes CO₂e per gigawatt-hour. Meanwhile, natural gas produces 490 tonnes of CO₂e per gigawatt-hour.

These three sources contribute to over 60% of the world’s energy production.

Deadly Effects

Generating energy at a massive scale can have other side effects, like air pollution or accidents that take human lives.

Energy SourcesDeath rate (deaths/terawatt-hour)
Coal24.6
Oil18.4
Natural Gas2.8
Biomass4.6
Hydropower1.3
Wind0.04
Nuclear energy0.03
Solar0.02

According to Our World in Data, air pollution and accidents from mining and burning coal fuels account for around 25 deaths per terawatt-hour of electricity—roughly the amount consumed by about 150,000 EU citizens in one year. The same measurement sees oil responsible for 18 annual deaths, and natural gas causing three annual deaths.

Meanwhile, hydropower, which is the most widely used renewable energy source, causes one annual death per 150,000 people. The safest energy sources by far are wind, solar, and nuclear energy at fewer than 0.1 annual deaths per terawatt-hour.

Nuclear energy, because of the sheer volume of electricity generated and low amount of associated deaths, is one of the world’s safest energy sources, despite common perceptions.

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