rebuilding of oil boiler house into gas boiler house in Przedsiebiorstwo Energetyki Cieplnej (Heat Power Company) of Gozdnica,

rebuilding of coal boiler houses into gas boiler houses in primary school and junior high school in Gozdnica,

building of gas network in Gozdnica,

building of gas boiler house with heat network at Test Exploitation of Bore Michorzewo,

operating of gas boiler house in Marki near Warsaw.