About SiriusWatts

Buying portable power is confusing: dozens of models, specs that don't line up, and marketing that overstates real-world performance. SiriusWatts exists to cut through it with one simple tool — tell us what you want to run, and we'll tell you exactly how much battery and solar you need, then point you to the gear that fits.

Our numbers use the same real-world efficiency assumptions the off-grid community relies on (inverter losses, safe depth-of-discharge, solar derating), so the recommendations hold up when the sun goes down.

We keep the lights on through affiliate commissions — see our affiliate disclosure. It never changes what we recommend.

SiriusWatts is operated by Sirius Software LLC.