REI helps businesses install solar photovoltaic (PV) systems to reduce energy costs and carbon emissions. They fully fund the installation and maintenance of the systems for 25 years. Businesses agree to purchase the solar electricity generated from the roof-mounted systems at a lower rate than their standard electricity provider. This provides immediate savings on electricity bills while achieving long-term protection from rising energy costs and reductions in fossil fuel usage and carbon emissions. Stagecoach UK installed several solar PV systems across their bus depots through this program, saving over £1 million in electricity costs and reducing carbon emissions by 3,000 tonnes over 20 years.