The Energy Advice Hub is powered by BiU, the UK’s leading energy and utility consultancy. We’ve put together the most frequently asked questions (FAQs) on achieving net zero emissions.
Net zero means that the overall balance of emissions is zero. That isn’t the same thing as having no emissions at all. For example, a country with 10,000 annual immigrants and a 10,000 annual emigrants obviously has migration activity, but it would be described as having “zero net migration” because numbers in are equal to numbers out.
It’s the same principle with emissions. It’s almost impossible to emit absolutely nothing, but we can achieve net zero if the emissions we produce are balanced by the emissions we absorb. The Committee on Climate Change suggests the best ways to increase the UK’s carbon absorption would be to turn some of our farmland over to tree planting and restoring peatlands.
- Every country in the world has signed up to the United Nations Framework Convention on Climate Change (UNFCC).
- The Paris Agreement in 2015 saw 160 countries voluntarily pledge to reduce their carbon emissions by 2030. Signatories included China, the USA and every country in the EU.
If you travel by air, flying is very likely to be the biggest contributor to your personal carbon footprint, and it’s almost impossible to offset this with other lifestyle changes. Going vegetarian for a year might save half a tonne of carbon, while driving 2000 miles less per year would save about 0.8 tonnes. The carbon savings you make in a year with either of those big changes would be wiped out in a day by one flight from London to New York (nearly a whole tonne).
To put it in a global perspective, the average person living in Bolivia will only emit 0.47 tonnes in a whole year. There are many other countries where the average person’s annual emissions are below the level of a single long-haul flight.
Unfortunately, there is currently no way to make your flying greener. Although the world’s first fully electric commercial aircraft took off last year, this technology probably won’t become widely available for years yet. There have been advances in making planes more fuel-efficient, but mile for mile, flying is still the most emissions-intensive form of transport.
Individuals can easily offset their personal carbon emissions once they have reduced them as much as possible. This site allows you to calculate your emissions and purchase offsets.
Yes. Although the energy powering your business or home is almost certainly coming from the grid, choosing a “100% renewable” tariff still makes a difference. Suppliers have to match the renewable energy bought by their customers with the amount they buy from generators, so when you choose renewables you are helping to make the UK’s energy mix greener.
More and more businesses are also choosing to buy their electricity directly from renewable energy generators such as a solar and wind farms, under corporate power purchase agreements (CPPAs).
A warmer earth might mean that cooler countries get milder winters. This might mean fewer winter deaths and less fuel poverty. In a warmer world, colder countries might also be able to grow a bigger range of food crops than before. However, these possible future benefits are drastically outweighed by the harm already being caused right now, let alone by the greater harm that we risk in future decades.
The World Health Organisation estimates that climate change is already causing 150,000 deaths every single year. If we take no action on climate change, far more people will die from climate-related causes such as extreme weather events, drought and malnutrition caused by failing food crops. We have lost 60% of all wildlife in the last 50 years, while the number of new infectious diseases has quadrupled in the last 60 years. Given recent events, the evidence that climate change increases disease transmission is particularly alarming. As the climate continues to change this rate could exacerbate further.
There isn’t a straightforward answer to this, as it depends on the type of heating system (gas boilers, heat pumps, electric panel heaters) in use as well as the type of heat emitters (underfloor heating, radiators, convectors etc.).
Probably the most important comparison to make is between an electric air source heat pump or a gas boiler; boilers only deliver about 0.9 units of heat for one unit of energy used, whereas heat pumps deliver about 3 units of heat for one unit of electricity used. Taking into account the associated carbon emissions factors, provided that the heat pump has a Seasonal Performance Factor of more than ~1.7 then it is likely to have a lower carbon emissions impact then the boiler.
The Energy Advice Hub is powered by BiU, the UK’s leading energy and utility consultancy. If you need advice on achieving net zero, give BiU’s team a call on 01253 785409 or email firstname.lastname@example.org