?? ?????? ??? 2005 ?2015? ??? ?????? ??????? ?????? ??????? ????? 40%? ????? ?????? ???????? ???? ????? ??????? ???????? ?? ????? 30% (Eia.gov). ??? ??????? ?? ????? ??? ????? ?????? ????? 40% ???? ????? ??? 2040? ?? ?? ????? ????? 800 ??????? ???? ??????. ??? 77% ?? ??? ?????? ????? ?? ?????? ???????? ??? ???????. ???? ????? ?? ??? 2014? ??? ????? ??? ?????? ?? ?????? ???????? ????? ??????? ?????? ???? ????. ????? ??? ??? ???? ???????? ???? ????? ????? ?????? ??????? ?? ???????? ??????????.

???? ?????? ?????? ?? ??????? ???? ?????? ????? ????????? ???? ???? ?? ?????? ????????. ???? ????? ????? ?????? ??????? ?????? ???????? ?????? ??????? ??????? ?? ??? ?????? ?????? ???????? ??????? ???????. ??? ???? ??????? ??? ??????? ???????? ????? ?????? ??????? ?????? ????? 20% ????? ??? 2020? ????? ???? ???? ??? ??????? ?????????? ?? ????? ????? ????? ???????? ??????? ???????? ???????? ???????? ??? ??????? ?????? ????? ?? ?????? ????? ??????. ?????? ?? ????? ?? ????? ????? 250 ????? ?? ?? ?????? ???? ?????? ???? ?? 600 ????? ?? ?? ???? ????? ???????.

???? ?????? ????? ??? ??? 2012 ?? ??????? ??? ????? ???????? ??????? ???????? ??????? ??? ????????? ???????? ?????? LED (UV-LED)? ???? ???? ????? ????? ????? ????? ?????? ??????? ???? ?????? ?????? ????????? ??? ??????? ?? ???? ??????? ?????? ????? 80% ?????? ???????? ?????? ?????????? ??????? ?? ????? ??????? ???????. ?? ??? ??????? ????? ???????? ??????? ???????? ??????? ??? ????????? ???????? ?????? LED ??? ???? ?????? ?? ??????? ??????? ???????? ???????? ??????.

??? ?????? ?????? ?? ??????? ???? ????? ??? ????? (DTS) ?? ?????? ???????? ?? ??? ?????? ??????? UV-LED? ??????? ??? ?????? ??? ?? ????? ????? ????????. ?????? ???????? ??????? ?????? ????? ?????? ???????/????????? ??? ???? ????????? ?????????? ???? ????? (SF)? ???????? ???????????? ?????? ????? ?????????? (???? nd)? ???? ????? ?????? ???????? ??????.