Situated on Pakkhowal Road, about 8 Kms from Ludhiana, the Substation is housed in an area of about 55 Acres. It was energized on 12.8.1983 when the power from 220 kV sub station Jamalpur, 220 kV sub station Barnala and GGSTP Ropar was brought through 220 KV Jamalpur–Lalton Kalan double circuit, 220 kV Barnala–Lalton Kalan line and 220 kV RTP–Lalton Kalan double circuit lines respectively. Later on, 220 kV Jamalpur–Lalton Kalan double ckt. line was looped in and looped out at 220 kV sub station Dhandari Kalan on dated 10.05.1988. On dated 11.03.1987 feeding of this sub station was started from 220 kV sub station Malerkotla instead of 220 kV sub station Barnala. On dated 16.06.1997, 220 kV RTP–Lalton ckt.-II was looped in and looped out at newly constructed 220 kV sub station Sahnewal. Again on dated 3.05.2000 220 kV RTP–Lalton ckt.-I was also looped in and looped out at 220 kV sub station Sahnewal. This Substation is main source of power for feeding various areas of Ludhiana city in addition to the areas of Humbran, Pakkhowal and Narangwal through various 220 kV and 66 kV lines. The fault level of this sub-station is 14111 MVA,37kA/1Sec.