The high up-front costs of solar have limited the wider uptake of small solar systems in emerging markets.

Indigo combines mobile phone and solar technology to allow customers to pay for their power as they use it, by purchasing weekly scratchcards.

Azuri secures working capital finance from Barclays. Initial £1M loan will support scale-up in sub Saharan Africa.

• Azuri wins Energy Globe South Sudan
• Barclays’ campaign on supporting UK businesses highlights Azuri