Home Battery Payback Math: Solar-Plus-Storage After the 30% Credit
With the federal credit gone, payback depends more on bill savings and VPP earnings. Here's how to run the numbers honestly.
Without the 30% federal credit, a battery's payback leans on two things: how much it saves on your bill and how much it earns in a VPP.
The rough math
Add annual bill savings (from shifting usage and avoiding peak rates) to annual VPP earnings, then compare against installed cost. In high-payment states, VPP income alone can offset a meaningful share of the system over ten years.
What to watch
Battery degradation, program changes, and regional differences all move the answer. Treat any single estimate as a starting point.
Key takeaways
- Payback now depends on savings plus earnings, not tax credits.
- VPP-active states improve the math the most.
- Use the calculator, then get real quotes.
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