RNP BUSINESS GUIDES / Keeping work moving
Will Starlink work during a business power outage?
THE SHORT ANSWER
Starlink can only support work during a local power outage if the terminal and every required part of the network still have suitable power. Include the router, switches, access points and critical end devices. Choose battery backup from the measured load and required runtime, then test the complete operating chain.
01 / Keeping work moving
Which equipment needs backup power?
| Equipment | Question to resolve |
|---|---|
| Starlink terminal and supply | Is the exact model supported by the proposed power arrangement? |
| Firewall or router | Does it remain powered when both WANs are available? |
| Network switches | Which switches carry the critical devices or power access points? |
| Wireless access points | Are the working areas covered while the building supply is off? |
| Payment, dispatch or office devices | Do batteries or protected outlets keep the actual task usable? |
| Supporting equipment | Does the workflow depend on a printer, local server or other unprotected device? |
02 / Keeping work moving
Why are UPS capacity and runtime different?
APC explains that a UPS must support the connected load within both its watt and VA ratings. Runtime is a separate question and changes with the equipment load. Use the manufacturer’s runtime information for the intended model and load; a large VA number alone does not state how long the business can work.
Measure the complete load where practical, including equipment powered indirectly through network switches. Ask the supplier to identify the expected operating range and any reserve. The installation should be reviewed by a competent provider for the actual electrical and environmental conditions.
03 / Keeping work moving
What does a simple battery estimate show?
Hypothetical energy estimate — verify with the manufacturer’s runtime curve
400 Wh × 0.80 usable fraction ÷ 100 W load ≈ 3.2 hours
This example assumes a 400 watt-hour battery, a combined usable-energy factor of 80% and a steady 100-watt load. These are invented planning inputs, not Starlink power specifications or a promise for a particular UPS.
Real runtime depends on the battery, conversion losses, load behavior, age and temperature. A UPS rated only in VA cannot be inserted into the watt-hour part of this formula. Use the calculation to understand the relationship, then select and test equipment using its actual specifications.
04 / Keeping work moving
What runtime should the business ask for?
Define the operational goal. Some sites need enough time to finish transactions and close safely; others need continuity until an approved alternate power source is available. These goals produce different budgets and procedures. Put the required duration and supported tasks in the brief.
Reduce unnecessary load before increasing battery size. A critical network may not need every guest access point, display or nonessential computer during an outage. Any reduced-power arrangement should be documented so staff know which areas and devices remain available.
05 / Keeping work moving
What should be demonstrated at handover?
- A controlled loss of the normal supply leaves the required connectivity path operating.
- Staff can identify remaining battery capacity or the approved shutdown point.
- The agreed essential task works throughout the required test period.
- Return of normal power does not leave equipment in an unexpected state.
- There is a maintenance owner, battery replacement record and safe test procedure.
About this guide
RNP’s planning recommendations are separate from vendor specifications. Sources were checked on October 15, 2026; current plan terms, availability and account-specific offers can change. Illustrative calculations are not installation measurements. RNP confirms project scope, price and local delivery availability after assessment.
PLAN THE INSTALLATION
Turn the question
into a clear brief.
List the equipment that must stay powered and the required operating duration.
Request a project review ↗Scope, location, price and availability are reviewed before work is accepted.