Defined term
Solar production guarantee
A solar production guarantee is a contractual promise of a minimum amount of system electricity production; the CPUC guide identifies such guarantees as a possible feature of leases and PPAs.
Also known as solar energy guarantee
economics · Concept code GS-CONCEPT-095 · Last verified September 29, 2026
Evidence as-of date unavailable · 2 sources have no source-event date
Content modified 2026-09-29
Definition and boundaries
Definition
A solar production guarantee is a contractual promise of a minimum amount of system electricity production; the CPUC guide identifies such guarantees as a possible feature of leases and PPAs.
Review confirmed · Review due October 29, 2026
The previous review deadline was September 19, 2026. The missed interval remains unverified; the current review does not establish historical coverage.
The cited evidence supports this statement within the source’s stated scope. Its jurisdiction and source-event date limit its applicability to a particular project.
Applicable jurisdiction: US; contract terms vary
Definition claim verification: Verified September 29, 2026
In plain language
Use Solar production guarantee only after the cash-flow perspective, timing, contract structure, included costs, and omitted items are made explicit.
What it is not
It is not a production estimate, module performance warranty, bill-savings guarantee, or guarantee of system uptime unless the contract says so.
Decision context
Why it matters
Review meter source, weather adjustment, availability, shading changes, curtailment, maintenance duties, exclusions, thresholds, annual or cumulative test, remedy, cap, and claim timing.
Review confirmed · Review due October 29, 2026
The previous review deadline was September 19, 2026. The missed interval remains unverified; the current review does not establish historical coverage.
The cited evidence supports this statement within the source’s stated scope. Its jurisdiction and source-event date limit its applicability to a particular project.
Applicable jurisdiction: US; contract terms vary
Decision-context claim verification: Verified September 29, 2026
Information boundary
This page provides general educational context, not a site design, production guarantee, utility determination, contract interpretation, legal opinion, tax conclusion, or individualized financial advice. Verify property, equipment, utility, jurisdiction, program, and agreement details before acting.
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Learning navigation
Primary topic: Maintenance
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Primary sources
- California Public Utilities Commission: Solar Consumer Protection Guide
Revision Version4 landing page; linked current simplePDFcoverPublishedOctober2025; snapshot pinned by retainedPDFhash · Source event date not provided · Ontology accessed September 29, 2026 · Ontology verified September 29, 2026
- National Laboratory of the Rockies: Best Practices for Operation and Maintenance of Photovoltaic and Energy Storage Systems, 3rd Edition
Source event date not provided · Ontology accessed September 29, 2026 · Ontology verified September 29, 2026