This letter / 01
Renewable growth grounded in the buyer's cash
Indian renewable tariffs are compared to the paisa at auction and then judged for years by who pays them. A board that reads a power purchase agreement without its buyer's payment record is valuing a promise, not a revenue stream.
Every few months a central auction for solar or wind capacity in India closes at a tariff that makes the business pages. The winning number is reported to two decimal places, compared with the previous auction and treated as the measure of the deal. I have taken part in those auctions for more than a decade, and I still read the tariff with interest. But in my experience it is the second most important number in a power purchase agreement. The first is how long the buyer takes to pay.
