If renewables are the future, why aren’t we there yet?

I’ve noted that on every recent Earth Day we tend to say the same thing: the transition to clean energy is happening now. And it is. But if that’s true; if solar and wind are cheaper, cleaner, and increasingly popular, why does it still feel like progress is so slow?

So I’ve done some research into the remaining major barriers to adoption and looked at a few examples of who’s doing it well vs those who need improvement. 

The honest answer is that shifting how the world powers itself is really hard. Not in a vague, dismissive way, but in very real, practical, and sometimes frustrating ways.

For more than a century, fossil fuels have been the backbone of modern life. They’re reliable, energy-dense, and - crucially - the infrastructure to extract, transport and burn them is already built. That last point matters more than people think. We’re not starting from scratch with renewables; we’re trying to replace a system that already works (at least economically), even if it comes with huge long-term costs.

The price problem isn’t what you think

You’ll often hear that renewables are now cheaper than fossil fuels. That’s broadly true, but only once they’re up and running. Getting them there is the catch.

Building wind farms, solar parks, and upgrading national grids requires huge upfront investment. Governments have to justify that spending (and win elections whilst the investment pays off) to voters dealing with rising bills. 

Businesses have to answer to shareholders looking for returns now, not in 10–20 years. So even when the long-term economics stack up, the short-term politics often don’t.

Our energy system wasn’t built for this

There’s also a less visible problem: the grid systems. 

Most electricity systems were designed decades ago for big, centralised power stations: coal, gas, nuclear. Renewables don’t work like that. They’re more spread out, and they don’t generate power consistently. The wind doesn’t always blow, and the sun doesn’t always shine.

That means we need smarter grids, better storage, and more flexibility. We’re getting there, but not fast enough. In some cases, renewable projects are ready to go but stuck waiting years just to be connected to the grid.

People support renewables… until they’re nearby

Then there’s the human factor.

In theory, most people support renewable energy. In practice, it’s more complicated. This is almost the exact same issue you see with housebuilding in major democracies - everyone wants more and cheaper homes, but most people don’t want them near them. 

A wind farm in the abstract is one thing; a wind farm on the hill behind your house is another.

Planning battles, local opposition, and environmental concerns can slow projects down dramatically or wrap them up in lengthy delays that make investors twitchy. 

Governments feel this tension. They want to move faster - but they also don’t want to pick fights with local communities or risk political backlash.

New dependencies are replacing old ones

Even the “clean” energy transition isn’t entirely clean-cut.

Solar panels, batteries, and wind turbines all rely on materials like lithium, cobalt and rare earth metals. These are often mined in a small number of countries, some of which are not always stable, creating new geopolitical dependencies. 

In other words, we may be swapping reliance on Middle Eastern oil for reliance on critical minerals from elsewhere. 

That doesn’t make the transition wrong of course, but it does make it more complicated.

We’re trying to change everything at once

Perhaps the biggest reason for the slow pace is also the simplest: this isn’t just an energy transition. It’s an economic one.

Whole industries, jobs, and regions depend on fossil fuels. Moving away from that has real consequences. As much as some people would like to, governments can’t ignore that, and so they move carefully, sometimes too carefully.

Where it’s working better, and where it isn’t

What makes this more frustrating is that we already have proof that faster progress is possible.

Take Denmark. It has spent decades investing in wind power and now generates a huge share of its electricity from it. This is the result of long-term policy consistency and public buy-in.

Or Kenya, where around 90%+ of electricity already comes from renewable sources, largely geothermal and hydro. In part, that’s because it didn’t have a deeply entrenched fossil fuel system to begin with, making it easier to leapfrog straight to cleaner energy.

Contrast that with Germany. It has invested heavily in renewables through its Energiewende, but still relies on coal and imported gas at key moments. Progress has been real but uneven, slowed by grid constraints, industrial demand, and the complexities of phasing out nuclear at the same time.

And then there’s the United Kingdom. Offshore wind has been a major success story, but planning delays and grid bottlenecks are holding back further expansion. The ambition is there, but the system just isn’t moving quickly enough to match it.

Different countries, different speeds, but the same underlying lesson: where policy is consistent, infrastructure keeps pace, and the public is on board, things move faster. Where those pieces don’t align, progress stalls.

So, what’s the reality?

The transition to renewables is happening. In some places, it’s moving quickly. In others, it’s grinding.

But globally, fossil fuels still dominate. Not because we don’t know better, but because replacing them is complex, expensive, and politically difficult.

Earth Day is a good moment to be optimistic and reflect on the progress we’ve already achieved. But it’s also a good moment to be honest. The barriers to renewables aren’t just technological - they’re financial, political, and human. I am sure in time we can overcome these too.