Switching to green tech and how it helps you limit your climate change impact

Long read

Climate change. It’s here. From rising global temperatures and melting ice caps to devastating wildfires and intense storms, its impact is already reshaping ecosystems and communities across the world.

While governments and industries carry significant responsibility, our own individual actions every day play a crucial role. But how can we help reduce our impact on the environment and limit our contribution to climate change?  

One of the most impactful steps is by embracing green technology.

When we talk about green tech, we are referring to environmentally friendly innovations that reduce carbon footprints, improve energy efficiency, and limit resource consumption. Whether solar panels, electric vehicles (EVs), or smart home systems, green tech is an accessible and powerful tool in the fight to reduce our environmental impact.

Understanding the climate challenge

The planet's average temperature has risen by about 1.1°C since the pre-industrial era. Scientists warn that we must limit global warming to below 1.5°C to avoid catastrophic climate impacts. This means rapidly cutting greenhouse gas emissions, especially carbon dioxide (CO₂), methane (CH₄), and nitrous oxide (N₂O), which mostly come from burning fossil fuels for electricity, transportation and industrial processes.

How green tech makes a difference

Switching to green tech helps reduce these emissions in a number of key ways:

1. Electrifying transportation

Transportation accounts for nearly 20-30% of global carbon emissions. Petrol and diesel-powered vehicles emit CO₂ and other pollutants every time they’re driven. Electric vehicles (EVs), on the other hand, run on electricity (ideally from renewable sources) and produce no emissions.

  • Driving an EV powered by clean electricity can cut emissions by up to 70% compared to a petrol/diesel-powered car
  • Even when charged using a mixed energy grid, EVs are still generally cleaner due to more efficient energy use and fewer emissions over their lifespan

Public transportation is also going green, with electric buses and rail networks offering lower-emission options for commuters.

2. Being energy efficient at home

Green tech also includes energy-efficient appliances, smart thermostats and LED lighting, and insulated windows, all of which reduce the amount of energy required to maintain comfort and convenience at home. For instance,  

  • A smart thermostat can reduce heating and cooling bills by up to 20%
  • Swapping old appliances for energy efficient rated models can significantly lower electricity usage

Less energy use means less demand on the grid and therefore fewer emissions from power plants.

3. Getting your electricity from clean energy production

Traditional electricity generation is one of the largest sources of carbon emissions globally. Coal and natural gas-fired power plants emit vast amounts of CO₂. In contrast, green technologies like solar panels, wind turbines, and hydropower generate energy without burning fossil fuels.

  • Solar power: A typical residential solar system can reduce carbon emissions by 3-4 tonnes annually, which is the equivalent of planting over 100 trees each year
  • Wind energy: Wind farms produce zero emissions once operational, and the cost of wind power has dropped dramatically in the last decade, making it both green and economical

By installing renewable energy systems at home or signing up to tariffs with utility companies that source from renewables, you directly lower demand for carbon-intensive electricity.

4. Installing green tech into your home

Let’s look at this more closely. Investing in and installing green tech onto your home: solar panels, heat pumps and batteries can help in the following ways:

  • Solar Panels generate clean electricity from sunlight, a renewable source. This reduces or eliminates the need for grid electricity, much of which is generated by burning fossil fuels. Homeowners also benefit from lower electricity bills because they are generating their own power, and can even make money by selling excess energy back to the grid. Read our article about all the benefits solar panels can bring to your home: https://www.thermly.co.uk/articles/are-solar-panels-worth-it  
  • Heat Pumps use electricity to move heat rather than generate it, making them much more efficient than gas or oil heating. If connected to solar panels, the electricity needed to run the heat pump is fully green, completely eliminating its reliance on fossil fuels. They’re super efficient too, with the ability to exceed 300% (i.e. 1 unit of electricity can produce 3+ units of heat)
  • Home Batteries store excess solar power during the day to use at night or during outages, reducing your need to draw from the grid (especially if it relies on gas or coal). They can also be set to avoid peak-time electricity prices, saving money and reducing demand on fossil-fuel-intensive grid periods.

Overall, installing one or more green tech items into your home will reduce greenhouse gas emissions, helping to fight climate change, while boosting your home’s energy efficiency, comfort, and long-term cost savings. You will also increase your energy independence from volatile fossil fuel markets.

5. Sustainable Building and Architecture

Green tech also comes in the form of green construction technologies - like cool roofs, recycled materials, and green insulation. These dramatically reduce the environmental impact of new buildings. Even retrofitting existing buildings with green upgrades can cut energy use and emissions by large margins. Many councils and local authorities are investing in this type of green tech - so next time you wander around town, keep a look out!

The personal and global benefits

It’s all very well us naming the different forms of green tech and explaining how they can help reduce our impact on the environment. Switching to green tech isn’t just about saving the planet - it also offers tangible benefits at every level:

Economic Savings
While the upfront cost of some green technologies can be higher, the long-term savings often outweigh initial investments. Here are some quick fire examples:

  • Solar panels can reduce or eliminate monthly electricity bills
  • EVs cost less to fuel and maintain than gas vehicles
  • Smart home devices optimise energy use, lowering monthly bills
  • Incentives and rebates from governments also help offset the cost of making green upgrades.

Read our article on the financial benefits of “going green”: https://www.thermly.co.uk/articles/ultimate-guide-the-financial-implications-of-going-green  

Improved Health
Reducing fossil fuel use also cuts air pollution, which is a major contributor to respiratory diseases, heart conditions and premature deaths. Clean energy and transportation can improve air quality, especially in urban areas.

Energy Independence
By producing your own electricity or reducing dependence on fossil fuels, you’re less vulnerable to price spikes, supply chain disruptions, or geopolitical instability affecting oil and gas markets...

Making the Switch: the practical steps you need to make

You don’t have to overhaul your life overnight to make an impact. Small steps add up.

  • Start with an energy audit: Learn how your home uses energy and where you can make savings
  • Replace incandescent bulbs with LEDs
  • Install a smart thermostat to automate efficient heating and cooling
  • Upgrade old appliances to energy-efficient models
  • Consider solar panels and / or a heat pump if you own a home, or support green power through your utility provider
  • Explore EVs or hybrids when shopping for a new car
  • Use public transportation or cycle / walk when possible

The Ripple Effect: Inspiring Change

By switching to green tech, you not only reduce your own emissions, you also inspire those around you. When friends, neighbours, or colleagues hear you  talking about your smart thermostat savings, or enjoying energy independence from solar panels, they may be encouraged to explore similar options.

Additionally, individual demand for green technologies drives innovation and lowers prices, making it easier for others to follow suit.

The Bigger Picture

While individual action is vital, it should complement systemic change. Supporting policies that accelerate the transition to clean energy is crucial. Voting for MPs who prioritise climate action, advocating for green infrastructure in your community, and holding companies accountable all multiply the impact of your personal choices.

Conclusion

Climate change is a shared challenge that requires both top-down solutions and grassroots participation. Switching to green tech empowers you to be part of the solution. It’s a vote for a cleaner, healthier, and more sustainable future - not just for you, but for generations to come.

Small changes, when multiplied by millions of people, become powerful. Your transition to green technology isn’t just about gadgets. It’s about values, vision, and the kind of world you want to live in.

Let Thermly help you transition to greener living. Contact the team and we can start you on the right path: www.thermly.co.uk/contact  

Get your free home energy report
It's free, quick, easy to use and tailored to your own home
Get started

Want to find out more about us or about green tech options?

Before you set up your account and continue your journey to a futureproofed home, just follow the links.

Customer service icon
Or would you prefer to speak to someone first? Our customer service team is always available to answer your questions on 0333 0503120.

FAQs

Are heat pumps more efficient than gas boilers?
Arrow pointing right.

Yes, significantly more efficient. A brand-new A-rated gas boiler operates at around 90% efficiency — meaning 90p of every £1 of gas you buy is converted into useful heat. A heat pump typically operates at 300–350% efficiency, meaning every £1 of electricity you spend generates £3–£3.50 worth of heat. As the electricity grid becomes greener and prices become more competitive, this advantage will continue to grow.

Are heat pumps efficient in cold weather in the UK?
Arrow pointing right.

Yes, air source heat pumps are designed to operate efficiently in temperatures as low as -15°C to -20°C, well below anything typically experienced in the UK. Their efficiency does reduce as outdoor temperatures drop; a heat pump with a CoP of 3.5 at 7°C might have a CoP of (say) 2 at -5°C, but they continue to heat your home effectively throughout a typical UK winter. Ground source heat pumps are even less affected by cold air temperatures because they draw heat from the ground, which stays at a relatively stable 8–12°C year round in the UK, regardless of air temperature.

How many solar panels do I need to run a heat pump?
Arrow pointing right.

If you want your solar panels to meaningfully offset the running costs of a heat pump, you will need a larger system than average. A heat pump in an average UK home uses approximately 3,000–5,000 kWh of electricity per year on top of your existing household consumption - if you’re looking to generate 5,000kWh you will need a 5-6kWp system, which is around 12-13 panels. If you want to cover all the other electricity use (on average, over the course of a year), then 22-24 panels will be needed. Rather than trying to generate 100% of your demand from solar, an alternative approach is to maximise the roof space you have available and pair the system with a battery so the solar electricity generated during the day powers the heat pump in the evening when heating demand is highest.

How much roof space do I need for solar panels in the UK?
Arrow pointing right.

Each standard solar panel takes up approximately 2 square metres of roof space. A typical 10-panel system therefore requires around 20 square metres of usable roof area, roughly the size of a small bedroom. For a 3-bedroom semi-detached house, the average south-facing roof slope provides 20–30 square meters of space (assuming there are no dormers or Velux type windows), which therefore would accommodate 10–14 panels. Your Thermly installation team will assess your roof during the survey, accounting for any obstructions such as skylights, chimneys, or roof vents, and design the optimal layout within your available space and budget.

Are solar panels worth it in 2026?
Arrow pointing right.

Read this article: Are solar panels worth it in the UK? | Thermly. We explain the full details here and provide a useful and concise guide for you. But the short answer is—in the main, yes. They’re a proven technology with a good payback—so if you have the right roof space and the ability to invest in them, then go for it.

How many solar panels do I need to power a house in the UK?
Arrow pointing right.

The average home that uses a gas boiler and has no electric vehicle uses about 3,500 kWh per year. The amount of solar electricity you can generate varies depending on your location, but on average it’s about 900 kWh per kW of solar panels each year. So on that basis, you’ll need to install about 4kW of solar PV panels to generate the same amount of electricity over the course of the year. That does NOT mean you won’t still be importing electricity, as it’s not all generated when you need it, especially in winter months. You’ll also probably be exporting in the summer. 4kW is about 8-10 panels, depending on the manufacturer and products used, and about 16-20 m² of roof space.