Use this WACC (weighted average cost of capital) calculator to derive an indicative value for the discount rate.
The underlying datasets are being obtained from various sources: Equity risk premiums and un-levered industry betas from Damodaran Online, 10Y government bonds from Bloomberg and the Trading Economics website for the tax rates.
Reach me directly if you want a copy of this file. Can't make sense of or disagree with the result? Read this article too.