The most simple & straightforward situation is when the system is owned outright by the current homeowner. Systems that are purchased up front are owned entirely by the seller, which means that they don’t’ come with any strings attached (apart from potentially paying a little more for the property due to properties already with solar have an increased home value which comes at a premium). This price premium for the home is justified as the long-term ownership costs will be much lower because the house will have a lower monthly electricity bill.