Architecture choice

Portable power station or DIY battery system?

Choose based on portability, expandability, integration effort, and the exact loads you need to support.

Best fit

Portable power station

Portable use, short setup time, and integrated charging/inverter hardware.

  • • Check solar input voltage and wattage limits.
  • • Check usable capacity and AC output separately.
  • • Confirm expansion and repair options before purchase.

Best fit

DIY battery system

Higher customization, larger systems, and users who need an architecture around specific DC loads.

  • • Requires a complete compatibility and protection design.
  • • Every component specification must be checked together.
  • • Installation quality has a larger effect on outcome.

Decision rule

Start with your critical loads and desired expansion path. The more custom DC loads, charging sources, or future capacity you need, the more useful an explicit component-level plan becomes.

Continue planning

Test the chosen path against your load.

Build the power baselineReview sizing assumptions

Editorial record

Maintained by Make Your Own Tools to turn “Size off-grid power” into a defined daily wh, battery reserve, panels, and inverter. The references below provide the technical context for this planning path. Its calculation rules and planning assumptions are documented in the methodology, and affected calculations pass regression checks before the review date advances.

Last reviewed
Evidence set
1 primary reference
Read methodology →
Planning scope
Early off-grid power planning before component comparison.
Next check
Use the resulting specification to check the selected equipment documentation, site conditions, and installation requirements.
U.S. Department of Energy homeowner solar guidePlanning sequence, site constraints, energy use, and solar decision context.Open source ↗