Panel owners aren't the only group that would get cranky about unbundling. Some non-solar consumers also reap effective subsidies from bundling costs into per-unit charges. Rural customers in low density areas would have higher bills if they paid for infrastructure explicitly. So would customers in dense areas who consume only a little electricity each month but still need the infrastructure to work around the clock. Customers who live in urban or suburban areas and consume a lot of electricity would see their bills fall. Since this latter group tends to be more affluent than the previous two groups, charging each customer proportionally to their incurred costs is also likely to be perceived as unfair.