Quick question: Are we a Type 1 civilization yet? The short answer is no. Scientists estimate that we are about 73% of the way there. But here’s the things get interesting. Researchers don’t agree on how long it will take us to reach the finish line. A 2026 study suggests we could become a Type 1 civilization around the year 2271, roughly 245 years from now. Another study suggests it could take thousands of years if we continue at our current pace. So, why are these estimates so different? Let’s break it down step by step.

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What Is a Type 1 Civilization?

The idea comes from Nikolai Kardashev, a Soviet astrophysicist who introduced this scale in 1964. His thinking was simple. If we ever meet an alien civilization, how would we compare them to us? So, he chose one simple measure: energy. The more energy a civilization can use, the more advanced it is. He divided civilizations into three main types. Type 1 civilization is planetary scale. It can use all the energy energy available to its home planet. A Type 2 civilization can use the energy of its entire star, while a Type 3 civilization can use energy of the entire galaxy. Here’s an easy way to remember it: Type 1 controls a planet’s energy, Type 2 uses the power of a star, and Type 3 uses the energy of an entire galaxy.

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How Close Are We to a Type 1 Civilization?

Later, astronomer Carl Sagan turned Kardashev’s idea into a mathematical formula. This allowed scientists to give any civilization a score, including those that fall between the three main types. The formula is K = (log₁₀ P − 6) ÷ 10, where P represents the amount of power a civilization uses, measured in watts. You don’t have to do maths. The important thing is the result. Humanity currently scores around 0.73, and a 2023 study published in Scientific Reports placing us at 0.7276.

This means we haven’t reached Type 1 yet. Today, humanity uses roughly 20 terawatts of power, while the Type 1 benchmark is about 10,000 terawatts. That’s around 500 times more than we use today. So, why does 0.73 sound so close? Because the scale is logarithmic. Every 0.1 step means using ten times more power. In other words, the final step is much harder than the score suggest.

Two Definitions of a Type 1 Civilization

Here’s something many articles don’t explain. When Nikolai Kardashev introduced his scale in 1964, he set the Type 1 civilization level at around 4 trillion (4 × 10¹²) watts of energy, which is roughly the amount of power Earth was using in the early 1960s. By this definition, humanity crossed the Type 1 mark decades ago. But later, Carl Sagan used a different approach. His version set the Type 1 civilization benchmark much higher, at around 10 quadrillion watts (10¹⁶ watts). It is also the benchmark used when calculating humanity’s score of around 0.73.

Now, here’s another surprising detail. Our Earth receives about 170,000 terawatts of energy from the Sun. Yet Sagan’s Type 1 benchmark is only around 10,000 terawatts, or about 6% of that incoming sunlight. So, when you read that humanity has reached 0.73 on the Kardashev scale, remember that the result depends on which definition scientists are using. The finish line isn’t the same in both versions.

When Will We Become a Type 1 Civilization?

Researchers have tried to predict when humanity might become a Type 1 civilization, but their answers are very different. Some believe we could get there in a few centuries, while others think it may take thousands of years.

The optimistic prediction: A 2026 study published in the journal Galaxies suggests that humanity could reach Type 1 status around the year 2271, if things go well. Interestingly, the researchers didn’t look at energy use alone. They also considered computing power, our ability to build things, and population growth. To bring all four factors together, they created a new measure called the Civilization Development Index. The same study suggests that reaching Type 2 could take much longer, maybe 3200 to 3500 CE. Even that would require major technological breakthroughs.

The more cautious prediction: A 2023 study published in Scientific Reports, involving researchers from Caltech, took a different approach. The team used machine learning to predict how humanity’s energy use might grow in the future. Their results were much more cautious. They estimated that our Kardashev score could reach only about 0.745 by 2060. If we continue using energy at the same rate as today, becoming a Type 1 civilization could take thousands of years.

Why are the predictions so different? The main reason is that both studies make different assumptions about the future. The optimistic study considers the possibility of major technological progress and better use of resources. The cautious study assumes that we keep doing roughly what we do now. Neither can see the future, so treat them as “what if” scenarios, not promises.

Could a Type 1 Civilization Even Use All the Sunlight?

Here’s an interesting point. Even if we wanted to become a Type 1 civilization, we couldn’t use all the sunlight reaching Earth. Sunlight keeps our planet warm and helps plants grow. Taking all that energy would damage the planet we want to control. A 2022 study looked at fossil fuels, nuclear power, and renewable energy, while also considering limits on climate change and pollution. It found that becoming Type 1 civilization could still be possible without going beyond these limits.

However, some critics say the Kardashev scale has its limits. Better technology allows us to do more while using less energy. So, simply using more power doesn’t always mean a civilization is more advanced. One writer put it nicely: we might be truly advanced when we realize we don’t need to use that much.

Final Thoughts

So, are we a Type 1 civilization yet? No, not yet. Our current score is around 0.73, and reaching Type 1 could take a few centuries or even thousands of years, depending on which study you follow. Both estimates are based on scientific models, not certain predictions. The Kardashev scale is a useful way to measure how much energy a civilization can use, but it doesn’t measure things like wisdom or happiness. So, the next time someone talks about becoming a Type 1 civilization, you’ll know where the idea came from, why there are two different versions, and why scientists still can’t give an exact date.