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How does solar energy work and why to use it?

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Solar panels in a house
More than 1.3 million UK homes have solar panel installations, according to the latest MCS data

 The impact of the climate crisis has never been more evident, with flooding, rising sea levels and high temperatures now becoming common occurrences on national news.

But renewables are a relatively unfamiliar technology, which means that we first need to raise awareness about how they work in order for people to feel comfortable using them. In this post, we explore solar energy – how it works, how you can use it at home, and why you should make the effort to switch to green energy.

How does solar energy work?

Solar energy is probably the most well-known form of renewable energy, but it’s massively underutilised. In fact, some research suggests that in just an hour and a half, the amount of sunlight that hits the earth could actually power the world for a year.

To harness the power of the sun, we need to use solar panels, which capture the sunlight (solar radiation) and then turn it into power that we can use in our homes. A conductor material in the panels, such as silicon, releases electrons when exposed to light, which in turn produces an electric charge. This then creates a direct current, which is passed through an inverter to create an alternating current – the type of electricity we use in our homes.

The difference between solar PV panels and solar thermal panels

When most people refer to solar panels, they tend to mean solar photovoltaic panels (PV panels) which we’ve outlined above, but there are actually two types. Solar thermal panels are made up of tubes or panels filled with water and glycol. They harness solar energy, converting it to heat.

The fluid is then pumped around the solar thermal circuit, which goes through the hot water cylinder used for the house. So, they do not offer solar electricity, but rather solar powered hot water, which can be used for washing as well as heating a property.

How can we get solar energy at home?

Solar PV panels can either be placed on a residential property, for direct use by the homeowner, or they can be part of a solar farm. If you have solar panels on your home, you’ll use solar power first, before topping up your electricity supply from the national grid. UK homeowners can also take advantage of the Smart Export Tariff, allowing you to sell back any excess electricity you generate but that you don’t use to the grid.

Alternatively, if you’re renting, don’t want to or can’t have solar panels at home, you can choose a renewable energy supplier to provide you with your electricity. Whilst there’s no way of ensuring that only green energy flows into your home, these renewable suppliers will put more green energy units into the grid mix, increasing the overall percentage of eco-friendly electricity – so you’re essentially voting for clean energy with your money.

What are the benefits of solar energy?

Cut your carbon emissions

The most significant reason to choose solar energy is that doing so can slash your carbon footprint, reducing your impact on the environment. Your installer will be able to advise on the best solar setup for your home, based on the orientation of the property, size of the roof and how much energy you’re likely to need. Whilst solar panels won’t be able to provide all of the necessary energy for your property all the time, there’s something satisfying about running your devices on energy that isn’t harmful to the planet.

Reduce your bills

Generating your own solar energy can help you cut your energy bills at home, both because you can use the energy directly and through the Smart Export Tariff. You’re simply making the most of the geographical orientation of your property, utilising a previously untapped resource to generate power for your home. In a time where energy bills are notoriously high, this is a welcome idea for many homeowners. Whilst there is the initial cost of the panels to consider, in the long run, you’re likely to end up saving money.

Olivia Miller is a journalist and blogger regularly collaborating with media outlets and writing about entrepreneurship, brand authority and corporate social responsibility (CSR).

Sustainability

Cadbury and other major biscuit brands to ditch plastic trays across Europe

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Cadbury and other major biscuit brands to ditch plastic trays across Europe
More than 115 Mondelēz products are getting new trays. | Photo: Medine Dilek Kizmaz

Some familiar biscuit packets are losing their plastic trays as part of a packaging overhaul expected to remove around 2,200 tonnes of virgin plastic a year across Europe.

Mondelēz International, the company behind Cadbury, Oreo and several other major snack brands, has replaced rigid PET plastic trays with paper alternatives across more than 115 cookie and biscuit products sold in over 25 European markets.

For UK shoppers, the change includes Cadbury Crunchy Melts, Cadbury Chocolate Chip Cookies and LU Petit Cookies. The trays are made from FSC-certified paper, although the products will still retain other packaging, including their outer wrappers.

The company estimates the switch will cut the amount of virgin plastic used in the affected packaging by around 80% compared with the previous combination of plastic trays and outer wrapping. That calculation is based on projected production volumes for the 2026 financial year.

More than 115 products are getting new trays

The change stretches well beyond the UK. Products sold under LU, Milka, Granola, Cadbury, Marabou, Chips Ahoy!, Lacta and Freia are included, covering markets such as France, Germany, Spain, Poland and Ireland as well as the Nordic countries.

Together, the affected lines account for roughly 28,000 tonnes of biscuits and cookies produced annually, according to Mondelēz.

This isn’t the company’s first attempt to reduce the amount of virgin plastic in its packaging. Some trays used for brands including Oreo, Cadbury, Milka and Chips Ahoy! already contain around 80% recycled PET, while Cadbury trialled paper Heroes tubs in the UK in 2025.

Food companies face growing pressure over plastic use

The move comes as manufacturers face both consumer and regulatory pressure to reduce their reliance on new plastic.

In the UK, the Plastic Packaging Tax applies to plastic packaging containing less than 30% recycled plastic. Since April 2026, the charge has been £228.82 per tonne, giving manufacturers a direct financial incentive to increase recycled content or move away from plastic altogether.

Recent HMRC figures show the scale of the issue. Of the plastic packaging manufactured or imported into the UK in 2025/26, 37% was declared taxable, while 51% met the threshold of containing at least 30% recycled material. The tax raised £250 million during the financial year.

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European Sustainable Energy Week to Kickstart in Brussels

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European Sustainable Energy Week Kickstarts in Brussels
Sustainable Energy Week 2026 will run until 11 June in Brussels. | Photo: Valentin Austier - ESW

The European Sustainable Energy Week (EUSEW) 2026 opens in Brussels this morning, marking the start of the event’s landmark 20th edition. Policymakers, industry leaders, researchers, innovators and civil society groups are converging on the Belgian capital for three days of debate, with a programme built around the theme “A clean, secure and competitive Energy Union”. More than 50 policy sessions, an Energy Fair and the annual EUSEW Awards are among the highlights of this year’s event, which will run until 11 June.

Milestone 20th Edition Focused on Europe’s Energy Future

EUSEW 2026 marks two decades of Europe’s flagship clean‑energy event. Since its inception, the week has grown into the continent’s largest annual gathering dedicated to renewables and energy efficiency. This year’s edition is hybrid, taking place both in Brussels and online, with sessions hosted at the European Commission’s Charlemagne building and the NH Brussels EU Berlaymont hotel.

The opening day features a panel bringing together former European Commissioners Andris Piebalgs, Günther Oettinger, Miguel Arias Cañete and Kadri Simson, alongside the current Commissioner for Energy, Dan Jørgensen. And over the coming days, themes such as energy efficiency, affordability and decarbonisation are set to ignite discussions.

Key Speakers and Programme Highlights

2026’s programme brings together a wide range of speakers shaping Europe’s clean‑energy transition. Alongside the Commissioners’ panel and keynote contributions from senior EU policymakers and leading industry voices, the agenda also features specialised debates. One of the 20 panels scheduled for the second day will examine how AI‑powered grids can secure Europe’s energy future. The momentum continues on Thursday, 11 June, when another full day of 20 panels will tackle some of the week’s most technical questions, including a session on how fair electricity taxation can support SMEs as they navigate the energy transition.

The EUSEW Awards Ceremony takes place on 9 June at 10:00 CET, celebrating outstanding achievements in three categories: Local Energy Action, Women in Energy and SMEs Driving Energy Efficiency. These awards recognise individuals and organisations driving meaningful progress in energy efficiency and renewable technologies.

A Europe‑Wide Celebration of Clean Energy

Although the main conference runs from 9 to 11 June, EUSEW extends far beyond Brussels. Sustainable Energy Days, held between March and June, bring the clean‑energy conversation to communities across Europe and beyond. These locally organised events allow citizens, businesses and public bodies to engage directly with the energy transition, making EUSEW a truly continent‑wide initiative.

The 2026 edition also marks the start of the mandate for the new cohort of 30 Young Energy Ambassadors, selected from across Europe to represent the next generation of clean‑energy leaders. Their involvement underscores the EU’s commitment to ensuring that young professionals play an active role in shaping the future of the energy transition.

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Scandinavian Airlines wins sustainability award in Copenhagen

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Scandinavian Airlines wins sustainability award in Copenhagen
The Aviation Challenge Awards were presented in Copenhagen on 21 January. | Photo: SAS

Scandinavian Airlines has been recognized in the category “Most Impactful Solution – Ground Operations” at The Aviation Challenge Awards. 


The Aviation Challenge is a global collaboration initiative presented by SkyTeam, bringing airlines together to accelerate progress in one of the most complex industries to transform. Through shared learning, data exchange and real‑world testing, participating airlines develop solutions that are already in use and designed to scale across operations. 

“SkyTeam has become a driving force in pushing sustainability forward across the industry, and this year’s results underline what is possible when airlines work together,” says Anko van der Werff, President and CEO, SAS. “It is inspiring to see airlines from around the world turn shared ambition into practical solutions that scale.” 

The Aviation Challenge Awards were presented in Copenhagen on 21 January, bringing together airline leaders and operational experts from across the global aviation community.  

New long‑haul routes to Dubai and Thailand

Scandinavian Airlines will be expanding its intercontinental offering for Winter 2026/27 with three new longhaul routes from Copenhagen to Dubai, Phuket, and Krabi.


The return to Dubai is SAS’ first operation to the UAE since 2011.

Thailand also receives a major boost, with more than 75 percent additional capacity compared with last winter. With the introduction of Phuket and Krabi, SAS becomes the only airline offering scheduled commercial nonstop services from Scandinavia to three destinations in Thailand: Bangkok, Phuket, and Krabi.

“Dubai represents an important market for SAS, and at the same time we are proud to introduce Phuket and Krabi to our longhaul network,” says Paul Verhagen, Executive Vice President and Chief Commercial Officer at SAS. “Re-establishing our presence in Dubai allows us to offer our customers direct access to one of the world’s most exciting cities, while the addition of Phuket and Krabi provides nonstop connections to Thailand’s most sought-after holiday destinations. Together, these routes strengthen Copenhagen as a global hub for Scandinavia and Northern Europe and expand the choices available to our customers for both business and leisure travel.” 

The new routes have been scheduled to offer convenient timings to and from Dubai and maximize connecting opportunities from Europe to Phuket and Krabi.

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