Real ChatGPT answer · index seedNy6BpnfTx34completeHome services and improvement · solar panelscommercial

What are the best online modeling tools or calculators for homeowners who want to independently verify a solar contractor's estimated annual kilowatt hour production claims?

ChatGPTgpt-64 queries11/1/2026
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Fan-out diagram

The searches the AI actually ran for this prompt.

SEED QUERY
What are the best online modeling tools or calculators for homeowners who want to independently verify a solar contractor's estimated annual kilowatt hour production claims?
4 real searches · 1 real-search pass
best online solar PV production calculators homeowners verify annual kWh estimate PVWatts SAM PVGIS officialGoogle ↗
OBSERVED
NREL PVWatts calculator inputs limitations shading official documentationGoogle ↗
OBSERVED
NREL System Advisor Model photovoltaic performance model officialGoogle ↗
OBSERVED
European Commission PVGIS tool grid connected PV performance officialGoogle ↗
OBSERVED

Badge and edge weight = share of passes that produced the query. Hover a query for its intent and routing format.

Query classes

Google's semantic query class for every sub-query: what kind of answer each search is after, simulated vs real.

Classifying 4 queries…

Searches and sources

ChatGPT4 real searches · gpt-6
best online solar PV production calculators homeowners verify annual kWh estimate PVWatts SAM PVGIS official Google ↗
NREL PVWatts calculator inputs limitations shading official documentation Google ↗
NREL System Advisor Model photovoltaic performance model official Google ↗
European Commission PVGIS tool grid connected PV performance official Google ↗
  1. Open PVWatts calculator · pvwatts.nlr.gov
  2. PVWatts Calculator · pvwatts.nlr.gov
  3. PVWatts Calculator · pvwatts.nlr.gov
  4. Open SAM website · sam.nlr.gov
  5. SAM Photovoltaic Models - System Advisor Model · sam.nlr.gov
  6. pvwatts.nlr.gov · pvwatts.nlr.gov
  7. Modeling Resources for Photovoltaic System Owners · energy.gov
  8. Open PVGIS calculator · re.jrc.ec.europa.eu
  9. Grid-connected PV - Joint Research Centre · joint-research-centre.ec.europa.eu
  10. Photovoltaic Geographical Information System (PVGIS) · joint-research-centre.ec.europa.eu
  11. NSRDB · nsrdb.nrel.gov
  12. API documentation · developer.nlr.gov

Queries

4 queries · click a column to sort
Query / typeSearchIntentQuery classRouting formatClusterFreq ↓Weight
best online solar PV production calculators homeowners verify annual kWh estimate PVWatts SAM PVGIS official
OBSERVED
Google ↗
AI Mode ↗
————1x
of 1
NREL PVWatts calculator inputs limitations shading official documentation
OBSERVED
Google ↗
AI Mode ↗
————1x
of 1
NREL System Advisor Model photovoltaic performance model official
OBSERVED
Google ↗
AI Mode ↗
————1x
of 1
European Commission PVGIS tool grid connected PV performance official
OBSERVED
Google ↗
AI Mode ↗
————1x
of 1