He affirmed hope that the relationship between New Delhi and Thimphu will keep growing thus benefitting the citizens of the two nations.
Prime Minister Modi appreciated growing domestic capacity of Bhutanese firms and technical agencies in the implementation of energy projects.
Mr Modi's visit to Bhutan comes just days after his Bhutanese counterpart Tshering Tobgay' s tour of India and the meetings he had with the Indian Prime Minister, the President and other leaders.
The racing event was a collaboration between Formula 4 and the Indian Racing League under the aegis of the Tourism Department on Sunday
External Affairs Minister S Jaishankar and other Indian dignitaries will also call on the Prime Minister of Bhutan.
The Tunnel in the upper reaches of Arunachal Pradesh bordering China was inaugurated by Prime Minister on March 9
The UOFA deems it urgent to apprise the PM about the volatile situation likely to arise in Assam in the coming days, the letter added.
PM will also lay foundation stone for 6 Road Under Bridges and 2 Road Over Bridges under NFR.
The 134.913 kms of Khowai-Harina road would be improved and widened with an investment of Rs 2,486.78 crore and a loan component of Rs 1,511.70 crore JICA
On Friday, French President Macron confirmed his visit as Chief Guest at Republic Day celebrations next year and thanked PM Modi for the invitation.