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    Greenhouse gases

    This work supports the following UN Sustainable Development Goals

    • Affordable and Clean Energy
    • Climate Action
    • Partnership For The Goals
    1. Home
    2. ...
    3. Greenhouse gases
    4. Climate-friendly freezers

    Climate-friendly freezers

    We make more ice creams than any other business. We’re leading the way in deploying natural refrigerant and low-energy freezers to reduce the greenhouse gas impact of our freezers – and working with others to complete an industry shift.

    A Walls display freezer full of ice cream

    Why do we need climate-friendly freezers?

    Freezers come with a significant climate footprint. Not only do they use energy to run, many also contain hydrofluorocarbon (HFC) refrigerants – strong man-made greenhouse gases (GHGs). Freezers are designed to keep these refrigerants sealed inside.

    Did you know?

    If HFC refrigerants do get released (for example during freezer breakdown or at end of life), they have a global warming impact thousands of times greater than the equivalent amount of carbon dioxide.

    This is why we’ve been taking action on this issue since 2004, working with our customers, suppliers, NGOs, governments and other manufacturers.

    To reduce our GHG impact, we focus on two areas: cutting the direct emissions from HFCs and reducing indirect emissions from energy consumption. We purchase freezers that use natural hydrocarbon refrigerants (HCs) instead of freezers using HFC refrigerants.

    2004 2010 2012 2014 2016 2018
    Unit of measure: cumulative number of HC freezers purchased
    First HC freezers purchased Over 450,000 Approximately 1.25 million Approximately 1.8 million Approximately 2.3 million Approximately 2.9 million

    2.9 million natural refrigerant freezers and counting

    We pioneered the use of HCs for our freezers in 2004. By the end of 2018, we had purchased around 2.9 million freezers containing natural refrigerants. Our ice cream brands, including Wall’s, Algida, Ben & Jerry’s and Kibon, are sold from 3 million freezer cabinets in over 45 countries. Through using HCs in our freezers, we’re contributing to the global shift in the freezer industry towards natural refrigerants.

    We’re members of the Consumer Goods Forum (CGF), which uses its influence to encourage suppliers to develop natural refrigerant technologies. The combined influence and reach of the member organisations involved mean that there is huge potential to change behaviour across industries and governments towards reducing the GHG impact of freezers. This is essential as the demand for refrigeration is growing rapidly worldwide.

    Energy reductions for our customers

    Our freezers use energy to keep our ice cream at the right temperature and in perfect condition. As well as using freezers with natural refrigerants, we’ve been working for many years to reduce the energy consumption of our freezers, so they use less electricity and generate fewer indirect carbon emissions. We partner with freezer manufacturers to develop and deploy low-energy freezers. In 2018, the freezers we purchased consumed on average 50% less energy per freezer than those purchased in 2008.

    And we’re not stopping there. We’re continuing to work on new technical solutions in design, insulation and refrigeration systems so we can take our energy reductions even further. We work closely with our strategic suppliers on developing new solutions and sustainable practices, and providing them to our customers (retailers). Our freezers are generally owned and operated by us, but our retail customers pay the electricity bill. As we improve our freezer energy efficiency, this also reduces running costs, benefiting our customers.

    Freezers on the frontline

    Stephen Breen

    Stephen Breen, Research & Development Manager.

    It’s easy to get motivated about energy reduction and natural refrigerants. I’m an engineer by training and an environmentalist at heart. Environmental challenges like climate change cannot be solved by doing things on a small scale. A quantum shift is needed, and industry has a huge part to play. You can do a lot more through the power of industry. There are limits to what I can do as an individual, so I’m lucky that I can make an impact through my job within Unilever.

    When I joined Unilever three and a half years ago, a huge amount had already been achieved – our freezers purchased today use half the energy they did ten years ago. In some respects, that means the job of energy reduction for us in Research & Development is getting harder and harder – we have to be even more innovative. The key focus is on ensuring energy-efficient freezers are as cost effective for the business as possible. Renewable energy is also a focus and it’s been fantastic to see our first solar-powered ice cream cabinets being trialled.

    A big part of our job is working with suppliers and communicating our requirements – most innovation comes from collaborating through the supply chain. By showing suppliers the demand is there, we can help bring these innovations to the commercial market more quickly. Everything we do is a team effort, both within Unilever and with suppliers. We couldn’t have achieved the progress we’ve made without everyone working together.

    Innovation and the future

    We’re continually innovating and collaborating with freezer manufacturers to further reduce the energy consumption of the freezers we buy. We’re also exploring the use of renewable energy to power our freezers and further reduce carbon emissions.

    In 2017, we developed and trialled 50 mobile ice cream cabinets fitted with solar panels in the US and India. These cabinets use just 10% of the electricity of a standard cabinet. They can work for up to 10 hours using solar power alone and recharge overnight from the electricity grid. We are fine-tuning the solar mobile units for improved performance and developing solar-powered static freezers.

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