Sainsbury’s switches to white eggs in net-zero push
Sainsbury’s has announced plans to stop selling brown eggs under its own-brand range and switch entirely to white eggs as part of its strategy to reduce carbon emissions and achieve its net-zero targets.
According to research commissioned by the supermarket and carried out by SAC Consulting, white eggs have a carbon footprint that is approximately 12.7% lower than that of brown eggs. The difference is largely linked to the hens that produce them. White-feathered hens typically consume less feed, live longer, and continue laying eggs for a longer period, making egg production more efficient and environmentally friendly.
The retailer also says white-feathered hens tend to be calmer and more docile than brown-feathered breeds, which can contribute to improved flock welfare by reducing behaviours such as feather pecking.
Sainsbury’s believes the move will support its goal of reaching net zero across its own operations by 2035 and throughout its supply chain by 2050. The decision aligns with broader UK climate objectives aimed at eliminating net greenhouse gas emissions by mid-century.
The change marks a return to a pattern last seen several decades ago. White eggs were once the dominant choice on supermarket shelves but gradually lost popularity after perceptions emerged that brown eggs were healthier or more natural. Misconceptions also circulated that white eggs were artificially bleached, despite shell colour being determined entirely by the breed of hen.
In recent years, interest in white eggs has begun to recover. Several retailers have tested consumer demand, particularly after supply pressures during the Covid-19 pandemic highlighted the benefits of diversifying egg production.
A Sainsbury’s spokesperson said customers would continue to receive the same taste and nutritional value from white eggs while benefiting from a product with a lower environmental impact. The company stated that the transition will allow shoppers to enjoy eggs that are both more sustainable and supportive of improved hen welfare.
