1. How are Supermarkets going green?

2. Introduction Production, packaging and transport of food makes a huge impact on the environment - the food you purchase accounts for one third of your total environmental impact if you come from an average British household. Most of this food comes from supermarkets, not generally thought of as eco-friendly organisations. But as climate change becomes bigger news every day, the major supermarket chains have seen an opportunity to improve their reputations with some high-profile green initiatives. Are supermarkets really going green?

3. Marks & Spencers M&S lead the way on sustainable fishing and degradable packaging In early 2007, M&S announced ‘Plan A', an initiative to spend 200 million pounds on reducing their environmental impact over the next five years. The plan seems to have gone down well with environmentalists, who say it is more comprehensive than other retailers. Unfortunately there seem to no plans to stop using excessive amounts of packaging (putting fruit and veg in trays and wrapping them in plastic). They are working on sustainable and degradable packaging - their sandwich packs already originate from sustainable forests, and much of the plastic used is made from corn starch and is compostable. They also plan to put aeroplane symbols on all food imported by air. M&S is the best British supermarket when it comes to sustainable sourcing of fish. They have also reduced carbon dioxide emissions from their stores over the last few years and have ambitious plans to become carbon neutral and stop sending waste to landfill by 2012.

4. Tesco- Carbon Friendly Tesco aiming to encourage carbon-friendly habits Tesco followed hot on the heels of M&S by announcing some environmental initiatives in early 2007. The most publicised was their plan to add ‘carbon footprint' labels to their food. They are also planning to add aeroplane labels to air-freighted food. The idea of labelling food as ‘flown' has been criticised. When you consider the livelihood of farmers that rely on imports to the UK, the issue suddenly becomes quite complex. Is it better to grow food in heated greenhouses in Europe than to fly it in from Africa? Tesco now offer Clubcard points (is this really a big incentive?) to customers that do not take plastic bags. A more effective policy may have been their TV adverts featuring celebrities using plastic bag alternatives.

5. Sainsbury's Sainsbury's promoting seasonal food and plastic bag alternatives The most famous thing to come out of Sainsbury's in recent months is the designer ‘I'm not a plastic bag' bag which proved to be extremely desirable and quickly sold out, showing that green is currently very much on trend. Jamie Oliver is also a good advert for them, with some TV adverts focusing on seasonal food. They also claim to be improving energy efficiency, and energy consumption per metre of store floor space has dropped in recent years, although their total carbon emissions have remained stable. However, unlike Tesco's and M&S they seem to be relying on the fact they already had a slightly greener reputation, and didn't jump on the ‘green initiative' bandwagon of early 2007. Sainsbury’s £5 ‘IT’ bag

6. What is Fair Trade? Fair trade is an organized social movement and market-based approach that aims to help producers in developing countries and promote sustainability. The movement advocates the payment of a higher price to producers as well as social and environmental standards in areas related to the production of a wide variety of goods. It focuses in particular on exports from developing countries to developed countries, most notably handicrafts, coffee, cocoa, sugar, tea, bananas, honey, cotton, wine, fresh fruit, chocolate and flowers. Fair trade products were once only found on the odd jar of coffee, that nobody seemed to actually buy, but thanks to supermarkets following the ‘green’ trend, fair trade has now been ‘mainstreamed’. Sainsbury's and Waitrose's decision to stock only Fairtrade bananas were notable successes, and the fruit overtook coffee as the biggest-selling Fairtrade item. Banana sales consequently rose 130 per cent to top £150m, and one in every four bananas bought in the UK is now Fairtrade. Tea and coffee rose by 24 per cent to a combined £147m, helped by Marks & Spencer's decision the previous summer to stock only Fairtrade ranges.

7. Is it enough? While the publicised green initiatives of the major supermarkets are a step in the right direction, they stop short of dramatic changes which might scare off customers by reducing choice or convenience. It seems unlikely that supermarkets will stop providing plastic bags or stocking out-of-season fruit and veg. It would be good to see some hard evidence of improvements - reduced food miles and energy consumption for example - rather than listening to ‘plans' and ‘aims' which currently form the bulk of their environmental policies.