Inform - IRS Private Letter Ruling Opens Floodgates for Residential Storage Retrofits
On March 2, 2018 the IRS issued Private Letter Ruling (PLR) 201809003 which permitted a customer to take the 30% solar Investment Tax Credit (ITC) for a storage system retrofitted to existing solar PV. Under the PLR, the storage system must be metered to ensure it charges 100% of its electricity from the solar system to claim the ITC. Previously, residential storage retrofits could not claim the ITC. This PLR opens the door for retrofitting storage to existing PV.