This means more than half of the total 25 lakh voters in the state have benefited from it, supposing that one family has on an average four members, he adds.
Assembly polls in Tripura and Meghalaya are due in February next year.
"The success of the central government's welfare schemes such as Ujjwala will be one of our key planks. Our another plank is the Left's reign of fear. People are with us," he told PTI, expressing confidence that his party would form its first ever government in the state next year.
Seeking to boost his party's campaign in the state, BJP president Amit Shah is likely to hold two rallies later this month and Prime Minister Narendra Modi is expected there next month, he said.
Tripura's Left Front government is credited by many with ushering in an era of peace following a long spell of insurgency and its chief minister, Manik Sarkar, who is at the helm for 19 years, enjoys a clean image.
Deb, however, attributed this positive perception about Sarkar's standing to "clever marketing", arguing that a "principal must be judged by his school's performance and not how he appears".
The number of cases of atrocities against women is huge and the state's unemployment rate stands at 20 per cent, the highest in the country, while 67 per cent of the people are below the poverty line, he said, accusing the Left Front government of unleashing violence against its political rivals.
"Three of our tribal leaders have been killed," he claimed.
Tripura has also benefited a lot from the rural employment guarantee scheme MNREGA and it was largely due to the efforts of the Modi government, he said.
He alleges that the central government has been paying its 90 per cent of the share of Rs 177 wage per day per person, while the state has failed to give the remainder 10 per cent.
The BJP did not win a single seat in the 60-member assembly in the last polls in 2013, but its high-voltage political campaign in the state since Shah took over as the party president in 2014 and desertion from the opposition Congress and TMC ranks to its fold have boosted its presence in the tiny northeastern state.
Several Congress MLAs, who had won on anti-Left platform, first joined the Trinamool Congress after their party joined hands with the Left in West Bengal and then they switched over to the BJP after the Mamata Banerjee-led outfit too was seen getting cosying up to the idea of a larger anti-BJP alliance.
Deb said that the BJP was the number two party in all the assembly bypolls and local elections in the state behind the Left as he ruled out any alliance, and said the BJP would field candidates in all 60 seats.
"Congress and TMC are finished. It will be a straight fight between the Left and us," he said.