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Use critical-load tiers when the budget is limited

Use critical-load tiers when the budget is limited. Check the cause, evidence to keep, recovery steps, and escalation.

Start here

Divide loads into Tier 1, Tier 2 and optional. Tier 1 might be lights, router, refrigerator and medical equipment. Tier 2 could add fans and selected sockets. Optional loads such as air conditioning or water heating can stay off during outages.

What applies to this exact problem

Divide loads into Tier 1, Tier 2 and optional. Tier 1 might be lights, router, refrigerator and medical equipment. Tier 2 could add fans and selected sockets. Optional loads such as air conditioning or water heating can stay off during outages.

Size the first battery/inverter system for Tier 1, then check the incremental cost of Tier 2. This prevents a single heavy appliance from doubling the storage budget. It also makes the system easier to expand later.

Verify the installation after commissioning

Test an actual outage while the installer is present. Confirm essential circuits transfer correctly, the inverter does not overload during motor startup and monitoring shows expected battery state. Ask for shutdown and emergency instructions.

Keep a simple maintenance log with battery alarms, firmware updates and unusual capacity changes. A backup system is valuable only when it is ready during the outage; testing it periodically is part of ownership.

Check these first

  • State the exact expected result and the exact result you have now.
  • Find the official record that owns the result and compare it with your evidence.
  • Change one thing at a time, then verify the final state before moving on.

Fix it in this order

  1. State the exact expected result and the exact result you have now.
  2. Find the official record that owns the result and compare it with your evidence.
  3. Separate hardware, installer, DISCOM/net-meter, portal, and subsidy status. They are different failure points.
  4. Record system size, module/inverter details, commissioning date, generation data, application IDs, and promised scope.
  5. Compare actual installation and generation with the signed quote, warranty, and portal/DISCOM records.
  6. Ask the responsible party for the exact pending action and owner of that action in writing.
  7. Do not close the job until safety checks, commissioning, monitoring, and applicable net-meter/subsidy records reconcile.

Build the proof pack

  • Signed quote and scope
  • Module/inverter serials and warranty
  • DISCOM/portal application IDs
  • Generation data, photos, and installer tickets

Avoid making the case harder

  • Paying the final amount before checking agreed milestones
  • Assuming low generation is automatically a bad panel
  • Treating installer completion as DISCOM/subsidy completion

How you know it is really fixed

  • The official record and your real-world result agree.
  • You have enough written evidence to prove the issue is finished if it returns later.

If it is still not fixed

  1. Installer/vendor grievance
  2. DISCOM/portal grievance route
  3. Consumer forum or other official remedy where appropriate

Official sources from the full guide

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This page solves one branch. The parent guide covers the full decision, edge cases, alternatives, and related checks.

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