Insurance/ Solar and battery risk
Solar PV and battery storage

Solar and battery fire risk, under control at every site

The panels went up faster than the fire rules. 21RISK asks every site what it has installed, follows up only the questions that apply, and keeps the evidence on the same record as your COPE and values.

24 to 72 h a building can stay closed after the fire is out Codan insight report, 2026
The gap

The installations are arriving. The risk work is not.

Green ambition has outrun fire safety in Danish industry. Codan's benchmark puts 85% of larger companies at high ESG ambitions and investments. The numbers below are what happens next.

  • +700% expected growth in battery storage at Danish businesses, 2026 to 2030
  • 60%+ of risk engineer visits find an installation placed with no prior risk assessment
  • 25% of companies involve fire advice before they buy
  • <40% have put energy installations into an updated business continuity plan

Source: Codan, Risici i den grønne omstilling, September 2026.

Where the risk sits

The risk is not the panel. It is the panel on that roof.

A fire rarely comes from the panel or the battery alone. It comes from what they meet: combustible insulation, a critical store underneath, a roof the fire service can only reach from one side.

Those facts normally live with four different people. In 21RISK they sit on one site, next to the COPE data and the values you already keep for the renewal.

sites / aalborg ONE RECORD
  • Technology Site

    Rooftop PV, 420 kWp

    Outdoor BESS, 1,000 kWh, LFP

  • Building COPE

    Sandwich panels, PIR core

    Array crosses one fire wall

  • Operations Values

    BI €18.4M, 18 months

    Finished goods store under the array

  • Fire service Evidence

    Roof access from one side

    Emergency plan review expired

Read together: a fault on this roof reaches a combustible core, above the stock that carries the BI, with one way up for the fire service.

Why these fires are different

Three things your fire plan may not cover yet

These are not bigger versions of a fire you already plan for. They behave differently, and they stop the business differently.

The panels stay live

A PV array produces DC for as long as light reaches it. The switch makes the building side safe, not the roof. The fire service treats the array as live.

Thermal runaway cannot be stopped

Once it starts in a cell, the battery makes its own heat and oxygen and gives off explosive, toxic gas. It can re-ignite hours or days later. Off-gas detection gave 5 to 20 minutes of warning in some FM tests.

The fire ends, the stoppage does not

Re-ignition and toxic gas often keep a building closed for 24 to 72 hours after the fire is out. The replacement price of the panels is rarely the big number. Lost production is.

Try it

Tell us what is on site. See what it has to prove.

These are the real 22 questions and the real rules. Tick what one site has installed. Add a combustible roof and watch the fire barrier question appear.

green energy / site declaration
Green energy on this site
Roof under the panels

9 of 22 questions apply

4 come back with an expiry

1. Site declaration

  1. 1.1 Solar PV, BESS and Li-ion UPS on site 21RISK

2. Solar PV

  1. 2.1 Handover documentation and commissioning record CFPA-E 37
  2. 2.2 DC isolation outside the building, signed and tested CFPA-E 37
  3. 2.3 Inverters outdoors or in a separate fire compartment CFPA-E 37
  4. 2.4 Cable routes and isolation points in the fire plans CFPA-E 37
  5. 2.5 Ground-fault alarm to a staffed location FM 1-15
  6. 2.6 Fire barrier or coating over a combustible roof FM 1-15 Does not apply
  7. 2.7 PV-free zone of 2.5 m at fire walls, distance to vents CFPA-E 37
  8. 2.8 Periodic inspection including thermography CFPA-E 37
  9. 2.9 Emergency shutdown procedure, staff instructed Insurers

3. Battery storage

  1. 3.1 Listed to UL 9540 or equivalent NFPA 855 Does not apply
  2. 3.2 UL 9540A fire test data available NFPA 855 Does not apply
  3. 3.3 Hazard mitigation analysis completed NFPA 855 Does not apply
  4. 3.4 Approved by or notified to the local authority NFPA 855 Does not apply
  5. 3.5 Emergency response plan agreed with the fire service NFPA 855 Does not apply
  6. 3.6 Fire suppression for the battery system FM 5-33 Does not apply
  7. 3.7 Gas and smoke detection, also at floor level Beredskabsstyrelsen Does not apply
  8. 3.8 BMS alarms sent to a staffed location FM Does not apply
  9. 3.9 Damaged or end-of-life batteries quarantined Beredskabsstyrelsen Does not apply
  10. 3.10 Separation from buildings and boundaries FM 5-33 Does not apply
  11. 3.11 Dedicated fire compartment NFPA 855 Does not apply
  12. 3.12 Explosion control: venting or exhaust ventilation NFPA 68 / 69 Does not apply
How it works

One programme, and each site sees only its own part

It runs on a compliance standards board, on the sites you already have. No separate list, no separate tool.

  1. 01

    Every site declares what it has

    Once a year each site confirms its PV, BESS and Li-ion UPS. Capacity, chemistry, the roof under the panels and who owns the installation go on the site record.

  2. 02

    Only the questions that apply

    The declaration drives the board. A site with a ground-mounted array is not asked about fire walls on the roof. A site with nothing answers one question and is done.

  3. 03

    Evidence, and it comes back

    Each answer asks for the document: the thermography report, the roof plan, the UL 9540A test. Yearly checks expire after 15 months at the latest and go back to the site.

green energy / questions by site 8 SITES
  • To do
  • In progress
  • Compliant
  • Expired
  • Blank: does not apply
QuestionsOdenseAalborgMalmöBergenTampereLeedsGhentBremen
1 Site declaration 1
1.1 Solar PV, BESS and Li-ion UPS on site
2 Solar PV 9
2.1 Handover documentation and commissioning record
2.2 DC isolation outside the building, signed and tested
2.3 Inverters outdoors or in a separate fire compartment
2.4 Cable routes and isolation points in the fire plans
2.5 Ground-fault alarm to a staffed location
2.6 Fire barrier or coating over a combustible roof
2.7 PV-free zone of 2.5 m at fire walls, distance to vents
2.8 Periodic inspection including thermography
2.9 Emergency shutdown procedure, staff instructed
3 Battery storage 12
3.1 Listed to UL 9540 or equivalent
3.2 UL 9540A fire test data available
3.3 Hazard mitigation analysis completed
3.4 Approved by or notified to the local authority
3.5 Emergency response plan agreed with the fire service
3.6 Fire suppression for the battery system
3.7 Gas and smoke detection, also at floor level
3.8 BMS alarms sent to a staffed location
3.9 Damaged or end-of-life batteries quarantined
3.10 Separation from buildings and boundaries
3.11 Dedicated fire compartment
3.12 Explosion control: venting or exhaust ventilation
Why now

More roofs are coming, and some of them are not your choice

The EU buildings directive makes solar part of building and renovating. The rules for how to place it safely are still being written, so the responsibility stays with you.

  1. End of 2026

    Solar on new non-residential buildings

    Over 250 m², where technically and economically feasible.

  2. End of 2027

    Solar when you renovate

    Existing non-residential buildings over 500 m², at major renovation or a permit.

  3. 2030

    15 GW of solar in Denmark

    Expected, up from 4.6 GW in 2026 and 1.1 GW in 2020.

Sources: Directive (EU) 2024/1275, article 10. Capacity figures from Codan, September 2026.

Built on sources

Every question says where it comes from

There is no single rulebook yet, so the programme uses the ones insurers already read. Each question names its standard. Where a number is our recommendation and not a requirement, it says that too.

  • CFPA-E Guideline 37:2025 F
  • FM Data Sheet 1-15
  • FM Data Sheet 5-33
  • NFPA 855
  • UL 9540 and 9540A
  • NFPA 68 and 69
  • DBI Vejledning 39
  • RC62
  • Beredskabsstyrelsen 2023
FAQ

Frequently asked questions

What does the programme cover?

22 questions in three sections: a yearly site declaration, 9 questions on solar PV and 12 on stationary batteries, including BESS and Li-ion UPS. Each question says what to attach and which standard it comes from.

Does it cover EV charging?

Not yet. The programme covers solar PV, BESS and Li-ion UPS. Forklift charging sits in COPE. If indoor charging or electric trucks are a risk for you, add your own questions to the board: they work the same way, with the same rules and evidence.

We have not bought anything yet. Is this for us?

Yes, and this is the cheapest moment. Use the questions as your list before you sign with a supplier or apply for a building permit: test data, placement, separation, fire service access. Fixing placement afterwards costs far more.

Does 21RISK replace our fire adviser?

No. A certified fire adviser and your insurer should look at each installation, ideally before you buy. 21RISK keeps the questions, the answers and the evidence across your sites. It does not approve an installation.

Will this keep us insured?

Your insurer decides that. What 21RISK gives you is the answer when they ask: which sites have PV or batteries, what is on the roof, and the documents behind it, in one place.

Are the yearly intervals a legal requirement?

Mostly not. Many standards say "regularly". Where an interval is our recommendation, the question says so. The answer then expires after 15 months at the latest, and you can change the interval to fit your insurer or local rules.

The panels belong to a third party. Does that change anything?

The site records who owns and maintains the installation, including a PPA. The fire still starts on your roof, so the questions apply either way. The answer is often a document from the owner.

Does it work outside Denmark?

The common basis is European and international: CFPA-E, FM and NFPA. Local rules come on top, such as DBI Vejledning 39 in Denmark or RC62 in the UK. Every question can be edited to match your countries.

How do we get it?

Talk to us. We set the board and the site fields up on your 21RISK organization, and from there every question, rule and interval is yours to change.

Know what is on every roof before your insurer asks

The programme runs on the sites, COPE and values you already keep in 21RISK. Show us your sites and we will set it up with you.