The great thing is that you can apply for both the Green Homes Grant and the Renewable Heat Incentive. In order to do this, you have the following two options: You can apply for the Green Homes Grant to help improve the energy efficiency of your home, to pay for the likes of insulation. Then you can apply for the RHI in order to pay for a new renewable heating system e.g. a heat pump and reap the rewards of the total tariff payment spread over 7 years. This pathway enables you to benefit from both schemes to advance your homes green credentials. The Green Homes Grant can be used to help towards to the initial installation costs of eligible renewable heating appliances e.g. heat pumps. If you pursue this option, your RHI payments will be reduced to take into account the Green Homes Grant.