Revenue (Tables)

12 Months Ended

Mar. 31, 2022

Disclosure of disaggregation of revenue from contracts with customers [abstract]

Summary of Revenue from contracts with customers

	For the year ended March 31,
	2020		2021		2022		2022
	(INR)		(INR)		(INR)		(USD)
Sale of power		47,759		47,673		58,990		778
Sale of services - management shared services		15		14		—		—
Income from engineering, procurement and construction service		543		434		295		4
Sale of services - operation and maintenance services (refer Note 45)		16		37		0		0
Others		79		29		64		1
Revenue from contracts with customers		48,412		48,187		59,349		782

Summary of Contract balance

	As at April 1,	As at March 31,
	2020	2021		2022		2022
	(INR)	(INR)		(INR)		(USD)
Trade receivables (refer Note 8)	25,914		35,980		44,819		591
Contract liabilities (refer Note 24)	1		1,425		—		—