Disclaimer

Educational information only — not financial, legal, or tax advice.

No Professional–Client Relationship

Using this site, reading our blog posts, or running numbers through the calculator does not create a professional relationship between you and Solar Savings Pro. We do not act as your financial advisor, tax preparer, or installer. Any decisions you make about going solar should be made with qualified professionals who understand your full situation.

Local Rules Make a Big Difference

Two homes with similar bills and system sizes can see very different outcomes if they are located in regions with different net metering rules, buyback rates, or interconnection fees. Treat the examples on this site as a way to understand the general math behind solar, not as a promise of how a specific utility will bill you.

Comparing Quotes and Scenarios

A practical way to use this site is to model a few different system sizes and financing options, then compare those estimates to quotes you receive from installers. The closer your calculator inputs are to the numbers in the quote, the more meaningful the comparison becomes.

Educational Use

All calculators and articles are for learning and planning only. They do not provide personalized financial, legal, or tax advice.

No Guarantees

Results are estimates. Actual savings and payback depend on sun hours, system quality, utility policies, and incentives.

Consult Professionals

Always consult licensed solar installers, financial advisors, or tax professionals before making decisions.

Third-Party Links

This site may link to external resources. We are not responsible for their content or accuracy.

Policy Changes

Incentives and utility rules change frequently. Always verify current policies.

Why We Emphasize Assumptions

Two people can look at the same solar project and come away with different expectations simply because they used different inputs. By calling out our assumptions, we invite you to change them and see how the results respond. If a small tweak makes a big difference, that is a sign that real-world outcomes may also vary widely.

Out-of-Date Information

Although we strive to keep examples and references current, older articles may occasionally mention programs or rate structures that have since changed. When something on the site does not seem to match what your utility or installer is telling you, treat that as a prompt to double-check dates and look for more recent guidance.

Evolving Best Practices

Solar best practices change as technology, pricing, and policy shift. The examples we offer reflect a snapshot of common approaches rather than a definitive rulebook. Treat them as starting points for discussion with qualified professionals rather than final word on any given strategy.

Room for Judgment Calls

Even with careful modeling, there will always be judgment calls that depend on your temperament and values. The tools and explanations here are designed to inform those choices, not to replace your personal sense of what feels right.

What Our Estimates Are Based On

Data SourceOriginUpdate Frequency
Peak sun hoursNREL National Solar Radiation DatabaseUpdated annually
Utility ratesEIA State Electricity ProfilesUpdated semi-annually
System costsNREL Residential Solar Cost BenchmarksUpdated annually
IncentivesDSIRE database + direct state agency sourcesUpdated on policy changes
Degradation ratesIEC 61215 standard + manufacturer warrantiesIndustry standard 0.5%/yr

Estimates are for planning purposes only. Always obtain quotes from licensed installers before making financial decisions. Solar incentives and utility rates change frequently — verify current values with your state energy office and utility provider.