Summary
A study warns that as more people install rooftop solar panels, electricity bills for those who stay on the traditional grid could increase. This happens because fixed costs are spread among fewer customers. Policymakers are advised to introduce fees to help utilities recover costs and prevent financial problems.
Key Facts
- Installing solar panels can increase electricity costs for neighbors who stay on the grid.
- Researchers used an economic model to study this effect in the Tennessee Valley Authority area.
- If solar becomes cheaper, up to 30% of customers may leave the grid by 2051.
- Electricity rates might increase by 10% for those who remain on the grid.
- Low-income households are more affected, as they may face higher costs.
- Policymakers could use grid access fees to help utilities manage costs.
- The study highlights the environmental benefits of solar but warns of potential cost shifts.
