About the tool
About LoadDay Power Planner
Estimate daily energy, battery capacity, runtime, and inverter headroom from a multi-device load list.
What works here
Enter your own inputs, compare the calculated results, and export a report. You can save one input snapshot in this browser and import or export input files. Examples are illustrative and do not represent live prices, inventory, or customer records.
Clear limits
- Results use your entered load measurements and assumptions; they do not certify an electrical installation or guarantee a manufacturer runtime.
- Battery aging, temperature, duty cycle, DC loads, and power-station reserve behavior can change real runtime.
- Do not connect generators or transfer equipment without following the equipment manual and applicable electrical requirements.
Privacy and access
The tool does not require an account or a paid subscription. Calculations, attachments, and exports stay in your browser. There are no active ads, affiliate redirects, or checkout integrations. Optional Cloudflare Web Analytics is loaded only after explicit consent.
Operator
Dheeraj Namburu
Questions or corrections: dheerajnamburu@gmail.com