Duke Energy wildfire mitigation plan: what it covers and means for you

Duke Energy's wildfire mitigation work spans grid hardening and vegetation management. Here's what's actually in the plan and how it affects your insurance risk.

DefensibleHome Editorial Team
23 min read
In This Article

Last updated 2026-07-25

Home with cleared defensible space zone on a dry California hillside near utility power lines
Home with cleared defensible space zone on a dry California hillside near utility power lines

TL;DR

Duke Energy runs utility-side wildfire mitigation (undergrounding lines, vegetation clearing, sensors, public safety power shutoffs in some states) that reduces ignition risk from equipment. It does not replace your own defensible space work. Homeowners in CA, CO, OR, and AZ still need their own clearance, home hardening, and documentation to keep or get insurance coverage.

What is Duke Energy's wildfire mitigation plan, exactly?

Duke Energy is one of the largest electric utilities in the country, serving customers across the Carolinas, Florida, Indiana, Ohio, and Kentucky, with related operations touching other states through its broader corporate footprint. Its wildfire mitigation work is the utility-side counterpart to what you do on your own property: reducing the odds that a power line, transformer, or downed conductor starts a fire in the first place. The core pieces most utilities (Duke included) report on look similar: vegetation management along rights-of-way, targeted undergrounding or covered conductor in high-risk corridors, weather stations and fault-detection sensors on the grid, and in some service areas, protocols for public safety power shutoffs (PSPS) during extreme fire weather. Duke's own emergency preparedness materials describe grid hardening and vegetation management as ongoing, year-round programs rather than one-time projects. Here's the honest caveat: utility wildfire mitigation plans vary enormously by state and by the specific regulatory body overseeing them. California's investor-owned utilities (PG&E, SCE, SDG&E) file wildfire mitigation plans under a specific CPUC-supervised statute, Public Utilities Code Section 8386, and those plans get intense public scrutiny because California IOUs have caused some of the state's most destructive fires. Duke Energy's largest exposure is in the Southeast, where wildfire risk from utility equipment is real but historically lower-profile than in California's chaparral and forest interface. If you're searching for Duke Energy specifically because you live in a Duke service territory in a fire-prone part of the country, check your state's specific utility commission filings rather than assuming California's rules apply [1].

Does a utility's wildfire mitigation plan protect my house?

No, not directly. A utility wildfire mitigation plan reduces the chance that the grid itself ignites a fire near your home. It does nothing about embers landing on your roof, flammable mulch against your siding, or a wood fence that funnels fire straight to your walls. Think of it as two separate layers of defense. The utility layer covers ignition sources on their infrastructure: sparking equipment, vegetation contact with lines, and failed hardware. The homeowner layer covers everything on your property, which is where the vast majority of home losses in wildfire disasters actually happen. The Insurance Institute for Business & Home Safety's post-fire studies of the 2018 Camp Fire in Paradise found that home survival correlated strongly with defensible space, roofing material, vent screening, and what touched the structure, not with the ignition source miles away [2]. So even in a service territory with an aggressive utility mitigation program, your insurer is going to ask about your own defensible space, your roof class, and your vegetation clearance. That's the layer you control, and it's the layer this site focuses on. For a broader look at what insurers and fire officials expect on your own lot, see defensible.

When does the California defensible space law go into effect?

California's core defensible space requirement, the 100-foot clearance rule under Public Resources Code Section 4291, has been in effect for years already, not a future date. What's changing is the addition of a new, more detailed "ember-resistant zone" within 5 feet of structures, called Zone 0. CAL FIRE's regulatory package for Zone 0 has been in development since Assembly Bill 3074 (2020) directed the agency to write specific standards for the zone closest to the home. As of CAL FIRE's public timeline, the Zone 0 regulations were expected to move through the Board of Forestry's rulemaking process with an effective date targeted around 2025-2026, though the exact enforcement date has shifted multiple times as the rulemaking process plays out. Check CAL FIRE's defensible space page directly for the current status before assuming a specific date. The existing 100-foot law breaks into two zones: Zone 1 (0-30 feet from structures, requiring removal of dead vegetation and significant spacing between shrubs and trees) and Zone 2 (30-100 feet, requiring reduced fuel loads and cut/mowed grass). CAL FIRE's own defensible space guidance states plainly that "defensible space is the buffer you create between a building on your property and the grass, trees, shrubs, or any wildland area that surround it". That buffer is what slows a fire down and gives firefighters a place to work. For a walk-through of what each zone actually requires on the ground, see fire safe landscaping California next to house.

Key wildfire mitigation figures homeowners should know Defensible space zones and regulatory timeline 30 Zone 1 clearance (ft from structure) 100 Zone 2 outer clearance (ft from structure) 5 Proposed Zone 0 ember zone (ft from structure) 2,017 Thomas Fire year (Santa Barbara/Ventura County) Source: CAL FIRE, Defensible Space (fire.ca.gov/dspace)

Why won't people follow the defensible space law in California?

Cost, confusion, and inconsistent enforcement are the three biggest reasons compliance lags, and none of them are mysterious once you look at the data. Cost is real. Removing mature trees, regrading slopes, or replacing wood fencing near a home can run from a few hundred dollars for a small lot cleanup to five figures for larger, wooded properties. CAL FIRE doesn't publish a single national cost figure because conditions vary too much by lot size, vegetation type, and slope, but local fire safe councils and university extension programs (like UC ANR's wildfire resources) consistently note that cost is the top barrier reported by homeowners in survey work. Confusion is the second driver. Zone 1 and Zone 2 rules sound simple on paper but get complicated fast on an actual sloped, oak-studded, or fence-lined lot. Many homeowners genuinely don't know if their landscaping counts as compliant, and enforcement letters from local fire departments often arrive without a clear inspection checklist attached. Enforcement itself is uneven. PRC 4291 gives local fire agencies inspection and enforcement authority, but staffing for defensible space inspections varies drastically between a well-funded suburban fire district and a rural volunteer department covering hundreds of square miles. Some counties inspect nearly every parcel in high-risk zones annually; others get to a fraction of that. When enforcement is inconsistent, compliance drops, because homeowners reasonably (if wrongly) bet they won't get checked. None of that changes what insurers are now asking for independently of local enforcement: many carriers are requiring their own defensible space documentation before renewal regardless of whether the local fire marshal ever knocks on the door.

How to prevent wildfires from starting on or near your property

Most wildfires near homes start from a small number of preventable ignition sources: equipment sparks, unattended debris burns, dragging trailer chains, mowing dry grass with metal blades, and improperly extinguished campfires or cigarettes. Ready.gov's wildfire prevention guidance is blunt about the basics: keep flammable materials away from structures, maintain equipment, and never leave outdoor fires unattended. On your own property, prevention work overlaps almost entirely with defensible space work: clear dead vegetation, keep gutters free of dry leaves and needles, store firewood at least 30 feet from the house, and avoid landscaping that creates a continuous fuel ladder from ground level up into tree canopies. CAL FIRE's "Ready, Set, Go!" program frames this as the first and most controllable part of wildfire risk reduction. A quick practical list that covers most preventable ignition scenarios around a home: - Don't mow or use metal-blade equipment on dry grass during red flag warning days.

  • Keep a 10-foot clearance around propane tanks and outdoor grills.
  • Extinguish and drown campfires completely; "cool to the touch" is the actual test fire agencies use.
  • Have vehicles and equipment with catalytic converters or exhaust systems checked; a meaningful share of roadside ignitions trace to vehicle-related sparks in dry roadside grass.
  • Report downed power lines immediately rather than trying to clear them yourself. None of this eliminates wildfire risk from wind-driven fires starting miles away, which is a separate problem solved by home hardening rather than prevention. But cutting down human-caused ignitions on your own lot is the one piece of the wildfire puzzle that's entirely within your control.

How to prepare for a wildfire before it happens

Preparation splits into three buckets: property work, evacuation planning, and documentation, and skipping any one of them leaves a gap that matters when a fire actually threatens your neighborhood. Property work means defensible space clearance (Zones 1 and 2 if you're in California, or your local fire district's equivalent elsewhere), ember-resistant details like metal mesh vent screens, and non-combustible material within the first few feet of your home's exterior. Ready.gov recommends starting an emergency supply kit and a family communication plan well before fire season, not during an active evacuation warning. Evacuation planning means knowing at least two routes out of your neighborhood, keeping your vehicle's gas tank above half during fire season, and having a go-bag with medications, documents, and pet supplies ready near the door. CAL FIRE's "Ready, Set, Go!" framework breaks this into three literal stages: get ready with defensible space and a plan, get set with bags packed when a threat is announced, and go early rather than waiting for a mandatory order. Documentation is the piece homeowners skip most often and regret most when a claim or renewal decision comes down to it. Photos and video of your home's exterior, roof, vents, and defensible space, dated and organized, give you a record of the condition of your property before a fire or before an insurer's inspection. This is the specific gap the $99 one-time Wildfire Insurance Survival Kit is built for: a structured way to document defensible space compliance and home hardening features so you have your own paper trail heading into a renewal decision, not something that files claims for you or guarantees an outcome.

How to prevent forest fires (and how it differs from home protection)

Forest fire prevention operates at a landscape scale and mostly isn't something an individual homeowner controls directly: it involves fuel breaks, prescribed burns, forest thinning, and fire road maintenance managed by agencies like the U.S. Forest Service, CAL FIRE, and state forestry departments. The U.S. Forest Service's prescribed fire program describes controlled burns as one of the primary tools for reducing the accumulated fuel loads that turn small ignitions into catastrophic crown fires [3]. What individual landowners near forested land can do is smaller in scale but not small in effect: reporting unauthorized campfires or debris burns, supporting local fuel-reduction projects, avoiding activities that spark in dry conditions (chainsaw use, welding, target shooting into dry brush), and maintaining defensible space on land adjacent to forest interface. A homeowner's five acres of well-managed defensible space next to national forest land won't stop a megafire, but it changes whether that specific home survives when the fire arrives. The distinction matters because a lot of well-meaning advice conflates "preventing forest fires" with "protecting your house from wildfire." They're related problems solved by different actors at different scales. Your job as a homeowner is the second one.

How to avoid forest fires as an individual or family

Avoiding forest fires as an individual mostly means not being the ignition source and staying informed about conditions before you're in or near forested land. Check local fire danger ratings before camping, using off-road vehicles, or doing any spark-producing work outdoors; ready.gov and most state forestry sites post current red flag warnings and burn bans. Specific habits that reduce your personal risk of causing or being caught by a forest fire: never leave campfires unattended even for a few minutes, check local burn ban status before any outdoor burning (many counties suspend all outdoor burning during red flag conditions), keep vehicles off dry grass (catalytic converters run extremely hot), and carry a basic fire extinguisher or shovel when doing outdoor work in fire season. If you live at the edge of forested land, avoidance blends into preparation: know your evacuation routes before fire season starts, sign up for your county's emergency alert system, and don't wait for a mandatory evacuation order if conditions look bad. CAL FIRE's guidance is direct on this last point: leaving early, before roads clog and visibility drops from smoke, is consistently safer than waiting.

How to prepare for forest fires if you live near wildland

If your home sits at the wildland-urban interface, preparation needs an extra layer beyond standard home hardening: a wider defensible space footprint, fire-resistant landscaping choices, and a realistic evacuation timeline given your specific road access. Start with an honest map of your property against CAL FIRE's Zone 1 (0-30 ft) and Zone 2 (30-100 ft) standards, or your state's equivalent. Then look at access: a single narrow dirt road out of a canyon community behaves very differently in an evacuation than a neighborhood with four paved exits. Local fire departments and county emergency management offices can tell you your community's specific evacuation zone designation and any known bottlenecks. For landscaping specifically, choose plant species with lower flammability and higher moisture content, space them to break up continuous fuel, and skip anything resinous or oil-heavy (many ornamental junipers and eucalyptus are notorious for this) near structures. For details on species selection and spacing near a home, see fire safe landscaping California next to house. If you're clearing larger wildland-adjacent parcels, contract-based clearing programs exist in some states; Washington's DNR program is one documented example of how that process works, covered in wildfire defensible space clearing contracts Washington State DNR.

What fire safe standards for homes take effect in 2026?

The most significant pending change is California's Zone 0 ember-resistant zone regulation, the 0-5 foot buffer immediately around a structure. Assembly Bill 3074, signed in 2020, directed the Board of Forestry and Fire Protection to develop specific standards for this zone, and the rulemaking process has targeted an effective date in the 2025-2026 window, though as of this writing the exact enforcement start date has been pushed back more than once as the regulatory process continues [4]. When finalized, Zone 0 rules are expected to require removing combustible mulch, dead vegetation, and stored combustibles within 5 feet of the home, and limiting or eliminating flammable plants and structures (wood fences directly attached to the house, for example) in that same narrow buffer. This is the zone fire researchers increasingly point to as the difference-maker in ember-driven home ignitions, because embers landing in mulch or under a deck right against the house account for a large share of home losses in wind-driven wildfires, according to IBHS's post-fire investigation of the Camp Fire in Paradise [2]. Outside California, no other state currently has an equivalent binding "Zone 0" statute, though some local fire districts in Oregon and Colorado have adopted similar defensible space ordinances at the county or fire-district level. Because these vary by jurisdiction, check your specific fire district's current wildfire code before assuming a state-level standard applies uniformly. CAL FIRE's own site is the first place to verify status before you plan work around an assumed deadline.

Is Santa Barbara safe from fire?

No coastal California community, Santa Barbara included, can be called "safe" from wildfire in any absolute sense; the honest answer is that risk varies block by block depending on proximity to wildland, slope, and vegetation, not by city name. Santa Barbara County has a documented history of major wildfire events, including the 1990 Painted Cave Fire and the 2017 Thomas Fire, which at the time was the largest wildfire in modern California history by acreage before being surpassed by later fires, followed by the deadly Montecito debris flow in January 2018 that killed 23 people, an indirect but devastating consequence of the burn scar left by the Thomas Fire, as documented in USGS's post-event assessment of the Montecito debris flows [5]. What makes parts of Santa Barbara higher risk is the same thing that makes many California coastal communities high risk: homes built directly against steep, chaparral-covered foothills, strong seasonal offshore wind events (Sundowner winds locally), and limited evacuation routes in some canyon neighborhoods. CAL FIRE maintains Fire Hazard Severity Zone maps that show block-by-block risk classification for the entire state, and checking your specific address against that map is far more useful than any general statement about a city's overall safety. If you own property in or near Santa Barbara's higher-risk foothill zones, the defensible space and home hardening priorities are the same as anywhere else in California's wildland-urban interface: Zone 1 and 2 clearance, ember-resistant vents and roofing, and a documented, photographed record of your compliance heading into any insurance renewal conversation.

How can we prevent forest fires at a community level?

Community-level prevention works best when it combines coordinated fuel reduction, shared defensible space standards, and better communication about local fire danger, none of which one household can do alone. Fire Safe Councils, which exist in many California counties, organize neighborhood-scale chipper days, coordinated brush clearance, and grant-funded fuel breaks that individual homeowners couldn't afford or organize on their own. Utility-side mitigation (of the kind Duke Energy and other utilities file with regulators) is one piece of this community layer: reducing equipment-caused ignitions removes one whole category of fire starts before they happen. But utility mitigation plans are only one layer among several; local government fuel management, homeowner association-level defensible space enforcement, and individual property compliance all have to work together for a community to meaningfully reduce its collective wildfire risk. The practical takeaway for an individual homeowner: check whether your community has an active Fire Safe Council or equivalent HOA wildfire committee, participate in group clearance events if they exist (they're often free or heavily subsidized), and push your local fire district for clear, published defensible space inspection standards if none currently exist. Community-wide compliance drops the overall ignition risk for every home in the area, including yours, even on days when the wind is blowing the wrong way.

How insurers view utility mitigation plans versus your own home hardening

Insurers underwriting wildfire risk generally weigh two very different inputs: aggregate community and utility-level risk data (which affects whether they write policies in an area at all) and individual property-level risk factors (which affect whether they renew your specific policy and at what price). A strong utility wildfire mitigation plan in your service territory can help an insurer's overall willingness to write policies in a region, but it rarely shows up as a line item on your individual renewal decision. What does show up on your individual renewal: your roof material and age, your defensible space compliance, vent screening, deck and fence materials, and increasingly, documented proof of the above rather than just a verbal claim. California's FAIR Plan and its associated Safer from Wildfires initiative, established under regulations from the California Department of Insurance, have moved toward giving credit for documented mitigation work, though the specific discount programs and documentation requirements vary by carrier and change often enough that checking directly with your specific insurer or your state's FAIR Plan is worth the ten minutes it takes . This is where the gap between "the utility is doing its part" and "you're doing your part" becomes concrete. If your neighborhood loses coverage or faces non-renewal, it's rarely because Duke Energy or any other utility's mitigation plan failed; it's because your specific property's risk profile, as documented (or undocumented) by you, didn't clear the insurer's bar. Related reading on the broader mechanics of a house fire's ignition pathways and what firefighters look for is covered in house fire and fire at a house.

What should you actually do this month if you got a non-renewal letter?

Start with the property, not the paperwork: walk your lot with CAL FIRE's Zone 1/Zone 2 checklist (or your local fire district's version) and fix the cheap, obvious problems first. Dead vegetation removal, gutter clearing, and moving firewood away from the structure cost little and address the highest-frequency findings in defensible space inspections. Next, document everything with dated photos: roof condition, vent screens, the first five feet around your foundation, and your full defensible space perimeter. Insurers and FAIR Plan reviewers respond to evidence, and a folder of dated, organized photos is worth more than a verbal assurance that "we cleared the brush last spring." Third, get your local fire district's specific standards in writing. Every fire district sets its own inspection checklist and enforcement schedule, so what your neighbor's county requires may not match yours; call your local fire marshal's office directly and ask for their current defensible space inspection standard. Finally, if you want a structured way to pull this documentation together before your renewal date or reinspection, the $99 one-time Wildfire Insurance Survival Kit walks through the same checklist categories insurers look for and helps you organize your own evidence file. It doesn't file claims or promise a specific coverage outcome. You still send your own documentation to your carrier and handle any renewal discussion directly; the kit just helps you build the evidence once, correctly, instead of scrambling during an active non-renewal deadline. For broader prevention messaging you'll see referenced across fire agencies, see only you can prevent wildfires.

Frequently asked questions

When does the California defensible space law go into effect?

The core 100-foot defensible space requirement under Public Resources Code 4291 is already in effect and has been for years. The newer Zone 0 (0-5 foot ember-resistant zone) regulation from Assembly Bill 3074 has a targeted 2025-2026 enforcement window, but the exact date has shifted during CAL FIRE's rulemaking process. Check fire.ca.gov for the current status.

Why won't people follow the defensible space law in California?

Cost, confusion about zone requirements, and uneven local enforcement are the three main reasons. Clearing mature vegetation or replacing fencing can cost hundreds to thousands of dollars, many homeowners don't understand Zone 1 versus Zone 2 rules on their specific lot, and rural fire districts often lack staff to inspect every parcel annually.

How to prevent wildfires from starting near my home?

Avoid mowing dry grass with metal blades on red flag days, keep a 10-foot clearance around propane tanks and grills, fully extinguish campfires ("cool to the touch" is the test), maintain vehicles and equipment that could spark, and report downed power lines instead of touching them. Most human-caused ignitions trace to a small set of preventable behaviors.

How do I prepare for a wildfire if I live in a high-risk zone?

Complete defensible space clearance to your local fire district's standard, harden ember-vulnerable points like vents and roofing, build a go-bag and know two evacuation routes, and photograph your property's condition before fire season for insurance documentation. Ready.gov recommends building this plan before a threat, not during one.

How to prevent forest fires at a larger, landscape scale?

Landscape-level forest fire prevention relies on agency-managed tools like prescribed burns, forest thinning, and fuel breaks, run by agencies such as the U.S. Forest Service and state forestry departments. Individual homeowners can support local fuel-reduction projects, avoid spark-producing activities in dry conditions, and report unauthorized burns, but the large-scale work isn't something one household controls.

How can individuals avoid causing forest fires?

Never leave campfires unattended, check local burn bans before any outdoor burning, keep vehicles off dry grass since catalytic converters run hot enough to ignite it, and avoid spark-producing tools like chainsaws or grinders during red flag warnings. Staying informed on local fire danger ratings before outdoor activity is the simplest preventive habit.

What fire safe standards for homes take effect in 2026?

California's Zone 0 ember-resistant zone rule, covering the 0-5 foot buffer around structures under Assembly Bill 3074, is the most significant pending standard, targeted for the 2025-2026 window through CAL FIRE's rulemaking. It's expected to restrict combustible mulch and vegetation within 5 feet of the home. Confirm the current status directly with CAL FIRE before planning around a fixed date.

Is Santa Barbara safe from fire?

No California coastal community is fully safe from wildfire; risk in Santa Barbara varies block by block based on proximity to chaparral-covered foothills and wind exposure. The county has a documented history including the 1990 Painted Cave Fire and 2017 Thomas Fire. Check CAL FIRE's Fire Hazard Severity Zone map for your specific address rather than judging risk by city name.

How does Duke Energy's wildfire mitigation plan affect my home insurance?

It generally doesn't affect your individual policy directly. Utility wildfire mitigation reduces equipment-caused ignition risk at a regional level, which can influence an insurer's overall willingness to write in an area, but your specific renewal depends on your property's own defensible space, roofing, and documented hardening work.

Does undergrounding power lines actually reduce wildfire risk?

Utilities and regulators generally treat undergrounding as an effective way to eliminate line-vegetation contact ignitions in high-risk corridors, though it's expensive and utilities typically prioritize it for the highest-risk line segments rather than entire service territories. It addresses one ignition pathway, not embers, lightning, or human-caused starts.

What's the difference between wildfire prevention and wildfire preparedness?

Prevention means reducing the chance a fire starts (equipment maintenance, safe burning practices, vegetation management). Preparedness means being ready if a fire happens nearby (evacuation plans, go-bags, defensible space, home hardening). Both matter, but preparedness is what actually determines whether your home survives a fire that starts somewhere else.

Who enforces defensible space rules where I live?

Enforcement authority and inspection schedules vary by state and by local fire district. In California, PRC 4291 gives local fire agencies inspection authority, but staffing and inspection frequency differ widely between departments. Call your specific local fire marshal's office to get your district's current defensible space standard and enforcement schedule in writing.

Sources

  1. USDA Forest Service, Prescribed Fire: Prescribed fire as a primary tool for reducing accumulated forest fuel loads
  2. California Public Utilities Code Section 8386: California investor-owned utilities must file wildfire mitigation plans under this statute, supervised by the CPUC
  3. Insurance Institute for Business & Home Safety, Suburban Wildfire Adaptation Roadmaps: Wildfire Research (Camp Fire, Paradise CA): Post-fire investigation of home survival factors in the 2018 Camp Fire, showing defensible space and building materials determined outcomes
  4. California Assembly Bill 3074 (2020): AB 3074 directed the Board of Forestry and Fire Protection to develop Zone 0 ember-resistant zone standards
  5. California Department of Insurance, Safer from Wildfires: California's Safer from Wildfires framework requires insurers to give discounts or credits for documented wildfire mitigation work

Disclaimer: DefensibleHome is an independent information publisher. We are not a public adjuster, insurance agent, or law firm, and we do not negotiate with insurers on anyone's behalf. This kit helps you organize your own documentation and communications; you prepare and send everything yourself. Nothing here is legal, insurance, or claims advice, and no outcome - including reinstatement of coverage - is promised. Wildfire mitigation rules vary by state, county, and fire district; confirm requirements with your local fire authority.

DefensibleHome Editorial Team

DefensibleHome provides expert guidance and tools to help you succeed. Our content is reviewed for accuracy and kept up to date.

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