Section 25D applies to residential solar installations and allows homeowners to claim 30% of their total system cost as a tax credit. . If you invest in renewable energy for your home such as solar, wind, geothermal, fuel cells or battery storage technology, you may qualify for an annual residential clean energy tax credit. The Residential Clean Energy Credit equals 30% of the costs of new, qualified clean energy property for your. . This legislation brings significant changes to the federal tax credit for residential and commercial solar and battery systems. The rate is effectively at. .