Last updated: April 23, 2026
By using PowerSizing you agree to these terms. If you don't agree, please don't use the site. These terms apply to all calculators, guides, and public content on powersizing.com.
What PowerSizing is and isn't
PowerSizing provides planning-level estimates for electrical systems — batteries, solar, backup power, home electrical loads, RV systems, and homelab infrastructure. The calculators apply standard engineering formulas to the inputs you provide and return an estimated result.
These outputs are planning tools, not engineering deliverables. They are not a substitute for review by a licensed electrician, solar installer, or other qualified professional. They do not constitute code compliance, utility interconnection approval, or installation certification of any kind.
Electrical systems — especially grid-tied solar, battery storage, and service panel modifications — involve real safety risks including fire, shock, equipment damage, and, in the worst cases, serious injury or death. Do not purchase equipment, begin installation, or make significant financial commitments based solely on calculator outputs. Always verify results with a licensed professional, check applicable local codes and utility requirements, and confirm specifications directly with product manufacturers before acting.
Accuracy and limitations
PowerSizing makes reasonable efforts to keep formulas, default values, and assumptions accurate and internally consistent. However, no guarantee is made that any output is complete, current, error-free, or appropriate for your specific situation. Product costs, utility rates, incentive programs, equipment specifications, and local codes change frequently and vary by location. The site cannot account for all of those variables.
Results should be treated as a starting point for further research and professional consultation, not as a final answer.
No warranty
The site and all content are provided "as is" and "as available" without warranty of any kind, express or implied. This includes but is not limited to warranties of merchantability, fitness for a particular purpose, and non-infringement. PowerSizing does not warrant that the site will be uninterrupted, error-free, or free of harmful components.
Limitation of liability
To the maximum extent permitted by applicable law, PowerSizing and its operators will not be liable for any direct, indirect, incidental, consequential, or punitive damages arising from your use of or reliance on the site, its calculators, or its content — including but not limited to equipment damage, financial loss, personal injury, or property damage resulting from a decision made using site outputs.
If you are in a jurisdiction that does not allow the exclusion or limitation of certain damages, the above limitation applies to the fullest extent permitted by law.
Your responsibilities
You are responsible for determining whether a result is appropriate for your situation, verifying local code and permitting requirements, engaging licensed professionals where required, and confirming product specifications with manufacturers. You use the site at your own risk.
You agree not to use the site for any unlawful purpose, to attempt to interfere with its operation, or to misrepresent outputs as professional engineering certifications.
Affiliate links and advertising
Some pages contain affiliate links or display third-party advertisements. PowerSizing may earn a commission from qualifying purchases made through affiliate links. Affiliate relationships do not influence calculator formulas or editorial recommendations. Third-party advertisers operate under their own terms and privacy policies.
Embeds
Calculator embed snippets may be used on non-commercial sites with the attribution link intact and visible. Commercial use of embeds — on sites that sell products or services — requires prior written permission. PowerSizing reserves the right to change or discontinue the embed feature at any time.
Intellectual property
Site content, including calculator logic, written guides, and design, is the property of PowerSizing. You may share links to pages and quote brief excerpts with attribution. Reproducing full pages, scraping content at scale, or republishing calculator tools as your own is not permitted.
Changes to these terms
These terms may be updated from time to time. The "last updated" date at the top reflects the most recent revision. Continued use of the site after a change constitutes acceptance of the updated terms.
Contact
Questions about these terms can be sent to contact@powersizing.com.