Solar PV system planning
Clarify roof duties, grid and register steps, subsidy context, and provider contact before you request an installation quote.
Updated: May 21, 2026 · Automatically generated
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PV planning selector
Use this as a planning selector for PV, grid registration, storage, charging context, and provider path. It is not a cost calculator.
| Your situation | Next step |
|---|---|
| You plan rooftop PV | Check duties |
| You want solar charging | Open wallbox path |
| You need installation contact | Open providers |
Core duties
For rooftop PV, the practical path usually separates grid registration, federal register entry, metering, and tax handling.
| Step | What to clarify |
|---|---|
| Grid operator | Register every system before grid connection. |
| MaStR | Enter the system in the Marktstammdatenregister. |
| Smart meter | Relevant for many systems from 2 to 100 kWp. |
| Tax | Annual tax handling can become relevant above 30 kWp. |
Solar duties differ by state
New buildings, roof renovations, commercial buildings, and residential buildings can follow different state rules. Check the state rule before treating a quote as complete.
Registration path
A rooftop PV system normally needs grid-operator registration and a Marktstammdatenregister entry. Larger systems can add smart-meter and tax steps.
Subsidy context
State and municipal programs change frequently. Separate federal feed-in rules, state support, storage funding, and local utility programs before comparing offers.
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