At the end of February 2020, the Provincial Government of East Kalimantan (Pemprov Kaltim) through Local Government-owned Electricity Company East Kalimantan (Perusda) signed a cooperation agreement with Surya Utama Nuansa (SUN) to install a solar energy system with a capacity of more than 1 Megawatt in 29 East Kalimantan Provincial Government office buildings. .