Against the backdrop of COP28, the paper examines the fiscal allocations for the green economy in India across sectors for adaptation and its budget credibility. There is a significant deviation between what is announced and what is realized in green budgets across sectors. Using detailed demand for Grants data, the paper analyses the sources of errors and partitions the errors into random or biased. Although the forecasting errors related to green economy allocations are predominantly due to random factors, there are sectors in which the errors are due to policy bias. Revisiting the assumptions and forecasting models are significant to minimize such errors.