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Solar energy isn’t just clean and efficient—it’s growing faster than you might think! In 2025, UK rooftop solar smashed records, and the numbers are mind-blowing. Let’s dive into 10 fun, mind-boggling solar energy facts that might just make you spill your tea.
1) Solar is cheaper than fossil fuels
Gone are the days when solar was a luxury for millionaires. Thanks to falling tech costs, group-buy schemes like Switch Together, and clever installation, solar panels are now cheaper than ever—and often cheaper than fossil fuels. Solar power is now the cheapest electricity in history, cheaper than coal or gas in most major countries, with costs expected to drop another 15-35% by 2024.
2) Solar panels last longer than your average telly
Modern panels can work efficiently for 25 years or more. So while your last flat-screen probably went kaput after a decade, your panels keep generating sun juice long after your Netflix queue has grown dusty. Bonus: even after 25 years, they’re still at 80% efficiency. That’s commitment.
3) Photovoltaic cells were invented way back in 1839
The photovoltaic effect was first discovered in 1839 by a French physicist named Alexandre-Edmond Becquerel. However, it wasn't until the late 20th century that solar panels started being used to generate electricity. It took a while for the technology to catch on because solar panels were expensive to produce and not very efficient.
Becquerel was only 19 years old at the time of his discovery. Imagine discovering world-changing technology as a teenager!
4) You can make money with solar energy
One of the great things about solar energy is that it can help you save money on your energy bills. But did you know that you can also make money from solar?
That's because you can sell unused solar energy to the grid. Although your solar panels generate electricity that you can use yourself, any excess energy is stored in a battery or sent back to the grid. You get credit for this energy, which can be used to offset your energy bills in the future.
5) Your roof could brew enough tea for the nation (sort of)
UK rooftop solar in 2025 generated 18,314 GWh—enough to boil water for 10.6 billion cups of tea. That’s two rounds for every Brit, every day, for a year. Imagine the national energy crisis averted with a cuppa and a biscuit.
6) The Sun Can “Fuel” Millions of EV Journeys
All of the UK’s solar panels together can generate up to 21.5 gigawatts of electricity, which is enough to fully charge 156 million EVs once, or to fuel a non-stop road trip from the UK to Australia a whopping 6,500 times!
7) Solar Panels
Your average beach handful of sand is mostly silica (SiO₂)—Earth's #2 most abundant element after oxygen. Refined to 99.9999% pure silicon, it becomes the "magic semiconductor" heart of every solar panel, turning sun photons into home electricity.
8) The Romans used solar energy
Time for some fun solar energy history facts!
The ancient Romans were some of the first people to take advantage of solar energy. According to Engineering Rome: "The design of the Baths of Caracalla and the Forum Baths at Ostia were such that there were many large south-facing windows so that the sun could heat and provide natural light to the warm sections of the baths. [...] Glazing the south-facing windows helped trap heat and the hollow tiles used in the floors radiated heat. The facades of the hot rooms received sunlight from early afternoon to sunset [and] the thick walls and floors had the ability to store thermal energy so that the Baths wouldn’t cool down too substantially at night."
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10) Solar is a team sport
The Future Homes Standard will make panels mandatory on most new builds from 2027. That means cleaner air, lower bills, and fewer emissions—like skipping 10 million gas boilers over their lifetimes.
Switch Together makes it easy to join thousands of households already saving energy together, pooling purchasing power to bring down costs, and even adding optional battery storage or EV charge points.
Why This Matters for Your Home
Not only does solar cut bills, but it also reduces your carbon footprint, keeps your kettles boiling, and gives your local community a chance to shine—literally. Joining thousands of households switching to solar makes you part of something bigger.
And hey, if you’re thinking, “I’d love to go solar, but it sounds complicated…”, don’t worry. With Switch Together, we guide you from first step to the final switch, helping you save money, reduce emissions, and make your home smarter.
