What should I ask my insurer before installing solar panels or a battery?

The rule

There is no single federal statute requiring homeowners insurers to cover solar
panels or battery storage. The starting point is the NAIC's consumer guidance on
environmentally friendly insurance,
which states: if you are considering adding solar panels or a wind turbine, check
with your homeowners insurer before making the modifications, because some insurers
extend homeowners coverage to these renovations but not all do, and in some cases
the addition can significantly affect the cost of your policy. The NAIC advises
calling your state insurance department first to learn your legal obligations, then
asking your insurer whether it will extend coverage; if it will not, the state
insurance department can tell you about an insurer authorized to offer the coverage
in your state.

The NAIC also notes that if you plan to sell excess energy from the system, you may
have specific insurance obligations before setting up the transfer.

What the rule means in practice

• Ask before you install. The confirmed advice is to check with the insurer
  before the modification, not after.
• Coverage is not automatic. Not all insurers extend homeowners coverage to
  solar panels or batteries; ask whether the equipment is covered, under what
  limits, and whether exclusions apply.
• Cost can change. The addition can significantly affect the policy cost.
• State departments are the backstop. Consumer guides from state insurance
  departments — such as the California Department of Insurance residential guide,
  Texas TDI home insurance tips,
  and Washington OIC's how home insurance works —
  explain general coverage principles and where to turn with disputes.
• Disputes have a process. Each state insurance department operates a complaint
  process (see for example the NAIC's how to file a complaint
  and the Washington and Texas department guides).

What may still be required or restricted

• An endorsement or policy change to cover the equipment.
• Proof of the installation for claims purposes (receipts, permits, inspection
  records).
• Compliance with state-specific obligations the insurance department identifies.
• Separate considerations when selling excess energy to a utility.

Facts that could change the answer

• The insurer's underwriting rules and the specific policy language.
• The state's insurance obligations and market (which insurers are authorized).
• The system's value, location, and type (rooftop solar vs. ground-mounted vs.
  battery storage).
• Whether the home is owner-occupied or rented, and whether an HOA or condo
  association requires its own coverage.

Practical decision path

1. Call or write your state insurance department to learn your obligations.
2. Ask your insurer in writing whether it will extend coverage and at what cost.
3. Keep the insurer's written response with the policy documents.
4. Keep the installation contract, receipts, permits, and inspection records.
5. If the insurer will not extend coverage, ask the state insurance department
   about authorized insurers that will.

Before work begins, obtain the written requirement from the building department, licensed installer, or serving utility and keep the record.

Records to keep

Keep the policy declarations and endorsements, the insurer's written confirmation
of coverage, the installation contract and receipts, permits and inspection
records, and any state insurance department correspondence.

Common mistakes

• Installing before asking. The NAIC guidance is explicit: check with the
  insurer before making the modification, because coverage is not automatic.
• Relying on an oral answer. Ask for the insurer's response in writing and
  keep it with the policy documents.
• Assuming a battery is covered like a roof. Battery storage raises separate
  underwriting questions; confirm limits and exclusions in writing.
• Waiting for a claim to discover the gap. A denial after a loss is much
  harder to resolve than a coverage question asked in advance, and the state
  insurance department complaint process starts with the written record.

When professional advice may help

For complex or high-value systems, an insurance agent or broker can compare policy
options, and a state insurance department complaint can resolve coverage disputes.