String inverters normally provide the simplest and most economical option for solar panels installed on a straightforward roof. Microinverters offer greater panel-level control and can be useful where panels are divided across several roof sections or experience significantly different shading.
Neither system automatically generates more electricity than the other.
The right choice depends on:
- Your roof layout
- The pattern of any shading
- How the panels can be grouped
- Your battery plans
- Monitoring requirements
- Maintenance access
- Future expansion
- The complete installed cost
A fair comparison should use the same panels, roof layout and shading assumptions. It should show the predicted annual generation of both systems in kilowatt-hours.
The short answer
A simple roof generally favours a well-designed string inverter. A roof divided across several orientations or affected by recurring uneven shade may justify microinverters.
String inverters and microinverters compared
| Feature | String inverter | Microinverters |
|---|---|---|
| Conversion location | One central unit | Beneath individual panels |
| Typical initial cost | Lower | Higher |
| Panel-level MPPT | No; normally per string or inverter input | Yes |
| Simple unshaded roof | Usually well suited | May offer limited additional generation |
| Complex roof | Depends on strings and MPPTs | Usually more flexible |
| Monitoring | System or MPPT level | Commonly panel level |
| Effect of one inverter failure | Whole array may stop | Usually one panel or connected unit is affected |
| Equipment access | Usually relatively accessible | May require roof access |
| Battery arrangement | Can be DC- or AC-coupled | Usually AC-coupled |
| Future expansion | Depends on inverter and string capacity | More modular, but not unlimited |
| Roof wiring | Shared DC strings | Short panel DC connections and an AC branch circuit |
| Number of conversion devices | Usually one | Distributed across the array |
String, micro and hybrid: what do the terms mean?
A common source of confusion is treating string, micro and hybrid inverters as three directly competing technologies.
They do not describe exactly the same thing.
String and micro describe where solar electricity is converted from direct current into alternating current.
Hybrid normally describes an inverter that can also manage a compatible battery.
Most domestic hybrid inverters are therefore also string inverters.
| Solar arrangement | Battery arrangement |
|---|---|
| Standard string inverter | Solar only or a separate AC-coupled battery |
| Hybrid string inverter | Solar plus a compatible DC-coupled battery |
| Microinverters | Normally paired with a separate AC-coupled battery |
| Integrated microinverter ecosystem | Manufacturer-specific solar, battery and control equipment |
A standard string inverter can potentially work alongside a separately installed battery. It is not always necessary to replace the solar inverter when adding storage.
Similarly, choosing a hybrid inverter does not guarantee compatibility with every battery. The inverter and battery must support the same electrical and communications requirements.
How does a string inverter work?
Solar panels generate direct-current electricity. In a string-inverter system, several panels are connected in series to form a DC string.
The combined electricity travels from the roof to one central inverter, which converts it into the alternating-current electricity used by your home.
The energy path is:
Solar panels → DC string → central inverter → home or grid
A domestic inverter may manage one or more strings. Modern models frequently provide two or more maximum power point tracker inputs, commonly shortened to MPPTs.
An MPPT continually adjusts the electrical operating point to extract as much power as practical under the current conditions.
Separate MPPT inputs can be useful where panels are installed on different roof directions. For example:
- East-facing panels connect to MPPT 1.
- West-facing panels connect to MPPT 2.
This allows the two groups to be managed separately rather than forcing them to share the same operating point.
Every string must remain within the inverter’s electrical limits, including:
- Minimum start-up voltage
- MPPT operating-voltage range
- Maximum input voltage
- Maximum input current
- Permitted string length
- Number of strings per MPPT
A properly designed string system can work effectively on many UK homes, including straightforward east-west arrays.
What are the advantages of a string inverter?
- Lower initial cost
- One inverter manages the array, so there are normally fewer conversion devices to purchase and install.
- Fewer roof-mounted electronics
- Most of the active power-conversion equipment is concentrated in a central unit rather than distributed beneath every panel.
- Accessible maintenance
- The inverter is usually installed in a garage, utility area, plant room or another suitable location. It can often be inspected and replaced without removing solar panels.
- Strong battery options
- A hybrid string inverter can manage compatible solar panels and a DC-coupled battery through one central system. A separate AC-coupled battery can also be added alongside many existing string-inverter installations, subject to system compatibility and network requirements.
- Effective performance on simple roofs
- Where panels share the same direction, pitch and sunlight, panel-level conversion may offer relatively little additional generation.
What are the disadvantages of a string inverter?
- Central point of failure
- If the principal inverter fails, the complete solar array will normally stop generating until it is repaired or replaced.
- String-design constraints
- Each string must contain a suitable number of compatible panels and remain within the inverter's voltage and current limits.
- Less detailed monitoring
- A conventional string inverter usually reports combined generation for the inverter or its MPPT inputs. It may not reveal the performance of every individual panel.
- More complicated irregular layouts
- Small groups of panels on several different roof directions can be difficult to arrange into suitable strings.
- Shared DC wiring
- The connected panels create a DC string whose voltage can remain present during daylight. The DC cable route, isolators and connectors need careful design and installation.
How do microinverters work?
A microinverter is fitted beneath an individual solar panel. Some products can serve more than one module, but one inverter per panel is the usual domestic arrangement.
Each microinverter:
- Receives DC electricity from its connected panel.
- Tracks that panel’s individual maximum power point.
- Converts the electricity into grid-compatible AC.
- Feeds the AC electricity into a shared branch circuit.
The energy path is:
Solar panel → microinverter → AC branch circuit → home or grid
There is no central solar inverter performing the conversion for the complete array.
A microinverter installation normally also needs:
- A communications gateway
- Network-protection equipment
- AC cabling
- Production metering
- Correct grid-profile settings
- Monitoring software
- Proper commissioning
The branch circuit must be designed for the combined output of its connected microinverters. Cable length, voltage rise, protective equipment and permitted device numbers still matter.
Enphase’s current installation documentation, for example, specifies gateway, branch-circuit and AC voltage-rise requirements. Enphase IQ8 installation documentation
What are the advantages of microinverters?
- Panel-level control
- Each panel operates through its own MPPT rather than sharing one tracker with a complete string.
- Flexible roof layouts
- Panels can be distributed across several directions and pitches without having to create a viable DC string for every small roof section.
- Panel-level monitoring
- A correctly commissioned system can normally show how each panel is performing.
- Distributed failure impact
- If one microinverter fails, the other devices should normally continue operating. The immediate generation loss may be limited to the connected panel or panels.
- Potentially easier expansion
- An additional panel can potentially receive another microinverter rather than being matched to an existing DC string. Expansion is still subject to circuit, equipment and network limits.
- Shorter DC connections
- Each panel has a short DC connection to its microinverter. The electricity then travels through the shared roof circuit as AC.
What are the disadvantages of microinverters?
- Higher initial cost
- The system needs an inverter for every panel, or sometimes every pair of panels, along with gateway and branch-circuit equipment.
- More electronics beneath the array
- The conversion devices are exposed to rooftop temperatures and can be difficult to access after the scaffolding has been removed.
- Roof access for replacement
- A failed microinverter may require safe roof access, panel removal and recommissioning.
- Gateway and cloud dependency
- Panel-level monitoring normally depends on communications hardware, internet access and a manufacturer platform.
- Battery integration
- Because the solar system already produces AC, battery storage is normally AC-coupled and uses a separate battery inverter.
- Product-generation compatibility
- Future expansion may be affected if a newer microinverter generation cannot share all functions with older equipment.
Which roof layouts suit each inverter type?
| Roof condition | Likely starting point | Reason |
|---|---|---|
| One clear, unshaded roof direction | String inverter | Simple layout with similar panel conditions |
| East and west roof with enough panels on each side | Dual-MPPT string inverter | Each direction can use a separate tracker |
| Three or more small roof sections | Microinverters | Forming effective DC strings may be difficult |
| Small extension with only two or three panels | Microinverters may help | A small group may not satisfy string-voltage requirements |
| Moving chimney shade | Compare both | The benefit depends on the shade pattern and string inverter's capabilities |
| Uniform shade over the whole array | Neither restores the blocked sunlight | Roof suitability is the main issue |
| Installation planned in several stages | Microinverters may be more flexible | Subject to branch-circuit, compatibility and DNO limits |
| Compatible DC-coupled battery required | Hybrid string inverter | Direct battery integration may simplify energy flow |
The inverter should be selected around the actual roof rather than a general rule that microinverters are premium and string inverters are basic.
What happens when one panel is shaded?
Panels connected in series share electrical characteristics. A poorly performing panel can affect how the string inverter finds the best operating point.
This does not mean that a shaded panel always reduces every other panel to exactly the same output.
The result depends on:
- The shaded area
- Shadow shape and direction
- Panel cell layout
- Bypass diodes
- Number of affected panels
- String arrangement
- Inverter MPPT behaviour
- Time of day
- Season
Modern panels normally contain bypass diodes. These allow current to bypass an affected section of the panel under certain conditions.
Modern string inverters may also include global or shade-aware MPPT. This searches for alternative operating points when the usual power curve is disrupted by partial shade.
Manufacturers including SMA and Fronius offer inverter-level shade-management systems. These are manufacturer-specific features rather than proof that every string inverter handles every shade pattern effectively. SMA ShadeFix, Fronius Dynamic Peak Manager
Microinverters provide a clearer separation because each panel has its own MPPT. An affected panel can operate at its available power point without asking the other panels to share it.
However:
Microinverters cannot restore sunlight blocked from a panel. Their potential benefit is reducing the additional mismatch loss elsewhere in the array.
Read Solar Panel Shading Explained for a more detailed examination of shade patterns.
Do microinverters generate more electricity?
Not automatically.
On a complicated or partially shaded roof, microinverters may produce more annual electricity than a poorly arranged string system.
On a simple roof with identical panels receiving similar sunlight, the difference between a good string inverter and well-matched microinverters may be small.
A fair comparison must use:
- The same panels
- The same number of panels
- The same roof layout
- The same shade assumptions
- Actual inverter models
- Realistic conversion losses
- Predicted clipping
- Net annual AC generation
Ask for two forecasts:
- Expected annual generation with the proposed string inverter
- Expected annual generation with the proposed microinverters
The difference should be shown in kilowatt-hours, not just as a percentage.
If the microinverter system costs substantially more, calculate the value of the additional electricity:
Annual value of additional generation = additional self-used kWh × avoided import price + additional exported kWh × export rate
Panel-level monitoring and distributed failure resilience may have value as well, but these should be considered separately from generation savings.
Inverter sizing and clipping
Solar panels are rated by their maximum DC output under standard test conditions. Inverters are rated by how much AC power they can deliver.
The panel capacity and inverter output do not always need to be identical.
String-inverter clipping. A string inverter may have a lower AC rating than the combined panel capacity. This can be intentional because panels rarely deliver their full combined rating continuously. A modestly oversized DC array can help the inverter produce useful output during weaker conditions, even if a small amount of peak production is clipped during exceptionally strong conditions.
Excessive undersizing can lose valuable electricity. The important measure is predicted annual generation, not whether clipping ever occurs.
Microinverter clipping. Every microinverter has its own maximum AC output. A high-power panel paired with a lower-rated microinverter may reach that ceiling during strong sunlight. The panel can still be a sensible match if the annual clipped energy is small and the microinverter performs effectively during more common conditions.
The total AC capacity of the installation is the sum of the individual microinverter ratings.
For more detail, see How to Size a Solar Inverter.
String inverters, microinverters and batteries
Battery integration is one of the most misunderstood parts of the comparison.
Hybrid string inverter with a DC-coupled battery
A compatible battery connects to the hybrid inverter on the DC side.
The simplified energy path is:
Solar DC → hybrid inverter ↔ battery → home or grid
Potential advantages include:
- One central energy-management system
- Direct integration between new solar generation and the battery
- Fewer separate inverter boxes
- Potentially fewer conversion stages when storing solar electricity
- Integrated monitoring and tariff controls
- Backup options with suitable equipment
Potential disadvantages include:
- The battery must be compatible with the inverter.
- One inverter problem may affect solar and battery operation.
- Changing the inverter later may affect the battery.
- Backup still requires suitable switching and system design.
Microinverters with an AC-coupled battery
The panels first produce AC electricity through their microinverters. A battery inverter then converts AC electricity into DC to charge the battery and converts it back into AC when the battery supplies the home.
The simplified path is:
Solar DC → microinverter AC → battery inverter DC → battery
Potential advantages include:
- Solar and battery equipment can be more independent.
- Storage may be easier to retrofit.
- Solar and battery capacity can sometimes be expanded separately.
- A failure in one part does not necessarily disable the other.
Potential disadvantages include:
- Solar electricity may pass through additional conversions when stored.
- Backup needs compatible switching and control equipment.
- Manufacturer ecosystems may still restrict combinations.
- The battery inverter may add to the registered generating capacity.
Existing string inverter with an AC-coupled battery
An existing solar installation can often retain its current string inverter and add a separate battery inverter.
This means that a non-hybrid string inverter is not automatically a dead end for battery storage.
The final design must still consider:
- Battery-inverter capacity
- Conversion losses
- Metering and controls
- Backup requirements
- Export limitation
- DNO approval
- Equipment compatibility
For a wider view of how the technologies work together, read Solar, Battery and EV: How They Work Together.
What happens during a power cut?
Important
Standard grid-connected string inverters and microinverters normally stop operating during a power cut.
This anti-islanding protection prevents a home solar system from energising local network cables while engineers may be working on them.
Microinverters do not automatically keep the home powered simply because they operate at panel level. A hybrid inverter does not automatically provide backup either.
Backup power requires safe disconnection from the public grid, a supported inverter configuration, changeover or system-controller equipment, correctly designed backup circuits, adequate solar or battery power, and appropriate commissioning.
Some systems back up selected essential circuits. Others may support more of the home. Solar-only daytime backup is available in specific product configurations, but it is not a standard feature of every microinverter installation.
Enphase, for example, states that its standard IQ8 solar-only configuration does not provide backup. Additional system-control and essential-load equipment is needed for a supported sunlight-backup arrangement. Enphase solar-only system guidance
Ask the installer:
- Which circuits remain powered?
- What is the maximum backup output?
- Is a battery required?
- Can the solar panels restart the system after the battery is depleted?
- Is backup hardware included in the quote?
What happens if an inverter fails?
| Question | String inverter | Microinverters |
|---|---|---|
| Effect of one inverter failure | Whole array normally stops | Associated panel or panels normally stop |
| Equipment location | Usually wall, garage, utility space or loft | Beneath the panels |
| Fault identification | Central fault code or monitoring | Panel-level monitoring can locate the affected device |
| Roof access usually required | No | Yes |
| Generation lost during repair | Potentially all solar generation | Usually a smaller proportion |
| Number of conversion devices | One principal unit | Multiple distributed units |
A string inverter concentrates the impact of failure but is generally easier to reach.
Microinverters distribute the impact, but a failed unit can be more expensive to access.
This means “single point of failure” does not settle the comparison. Homeowners need to consider likelihood of failure, amount of generation affected, speed of diagnosis, installer availability, labour, scaffolding, panel removal and warranty terms.
Comparing warranties properly
Microinverters are often supplied with longer headline product warranties than string inverters.
Enphase currently offers a limited warranty of up to 25 years for certain UK microinverters. The applicable document depends on the product and activation date. Enphase UK warranty information
A long product warranty does not automatically cover:
- Diagnosis
- Installer labour
- Scaffolding
- Roof access
- Panel removal and refitting
- Communications equipment
- Replacement shipping
- Lost generation
String-inverter warranties may be shorter, but the equipment is normally easier to access and replace.
Ask:
- Is product registration required?
- How long is the exact model covered?
- Is the gateway covered for the same period?
- Who handles warranty claims?
- Is labour reimbursed?
- Is scaffolding included?
- What happens if the installer stops trading?
- Does the replacement receive a new warranty or only the remainder of the original one?
Important
A 25-year equipment warranty does not necessarily provide 25 years of free labour, scaffolding and roof access.
Monitoring and data access
String-inverter monitoring. A modern string or hybrid inverter may report total solar generation, production from separate MPPT inputs, household consumption, grid import and export, battery charge level, fault alerts and tariff-based operating schedules. The available data depends on whether the required meters and current transformers are included.
Microinverter monitoring. A microinverter system may additionally show individual-panel production, panel-level faults, differences between roof sections, persistent localised shading and a digital map of the array.
Panel-level monitoring can be valuable for diagnosis, but it normally depends on a communications gateway and manufacturer platform.
Before installation, establish:
- Is the gateway included?
- Is household-consumption monitoring included?
- Will you receive full panel-level access?
- Who controls the account?
- Can you download historical data?
- Does monitoring need permanent internet access?
- Are any features subscription-based?
- How is ownership transferred during a house sale?
- What happens if the cloud platform changes?
Can more panels be added later?
Microinverters can make small additions easier because a new panel does not necessarily have to match an existing DC string.
Expansion is not unlimited.
A microinverter addition must account for:
- AC branch-circuit capacity
- Maximum permitted devices per branch
- Cable voltage rise
- Gateway capacity
- Panel compatibility
- Microinverter-generation compatibility
- Consumer-unit capacity
- Roof access
- DNO approval
- Export limitation
A string system may also be expanded if it has spare inverter capacity, an unused MPPT input, suitable string voltage, adequate input-current capacity and compatible panels. Alternatively, another inverter could be installed.
If future expansion matters, ask the original installer to document the intended route rather than relying on a general statement that panels can be added later.
Read Adding More Panels to an Existing Solar System for the full retrofit considerations.
Which system is safer?
Both systems can be installed safely when correctly designed and fitted.
A string system normally has connected panels producing a shared DC string voltage, longer DC cable routes, DC connectors and isolators, and fewer roof-mounted conversion devices.
A microinverter system normally has a short DC connection between each panel and microinverter, AC cabling across the roof, more electronic units beneath the array, more distributed connections, and product-specific isolation and shutdown arrangements.
Microinverters reduce the length of shared high-voltage DC cabling. They do not make the roof electrically harmless: the AC circuit, connectors and electronic equipment still require proper protection and isolation.
The comparison should focus on the complete design, installation quality and exact safety functions rather than a universal claim that AC is safe and DC is dangerous.
How do G98 and G99 apply?
Choosing microinverters does not avoid electricity-network connection requirements.
In Great Britain, G98 generally covers fully type-tested generation up to and including 16A per phase. This corresponds to 3.68kW on a single-phase supply.
Larger aggregate generating capacity normally follows a G99 process.
For microinverters, the individual AC output ratings are added together.
Example
Twelve microinverters rated at 360VA each provide:
12 × 360VA = 4,320VA
The aggregate registered capacity is therefore 4.32kVA. It cannot be treated as twelve unrelated small generators.
Battery inverters may also affect the aggregate generating capacity, even where an export-limitation system is installed.
The installer should confirm the applicable process and use equipment with the required type-test status. Energy Networks Association G98 guidance
Read G98 vs G99 for Home Solar for a dedicated explanation.
Are microinverters the same as plug-in solar?
No.
A microinverter describes a type of power-conversion equipment. It does not automatically mean that a solar system can be connected through a household socket.
From 27 August 2026, compliant plug-in solar kits up to 800W became legal in Great Britain under a separate product and safety framework. These kits commonly use microinverters, but they are distinct from conventional professionally designed rooftop arrays. UK government plug-in solar announcement
A conventional rooftop microinverter system remains a fixed solar installation with its own circuit design, protection, commissioning and network requirements.
Comparing lifetime cost
Initial inverter price is only one part of the calculation.
Compare:
- Inverter or microinverter equipment
- Gateway and monitoring hardware
- Installation
- Predicted annual generation
- Battery equipment
- Backup equipment
- Warranty extensions
- Expected replacement provision
- Labour
- Scaffolding and roof access
- Lost generation during failure
- Expansion costs
- Monitoring subscriptions or service plans
The lower-cost initial system is not necessarily the lowest-cost lifetime system. Equally, a long warranty and panel-level monitoring do not automatically justify a large upfront premium.
How to compare installer quotes
Ask each installer to provide:
Solar panels
- Manufacturer and model
- Rated power
- Voltage and current
- Product warranty
String or hybrid inverter
- Exact model
- AC output rating
- Number of MPPTs
- MPPT voltage range
- Input-current limits
- Proposed string layout
- Battery compatibility
- Backup capability
- Warranty
Microinverters
- Exact model
- Maximum panel input
- Operating-voltage range
- Maximum AC output
- Number permitted per branch
- Panel compatibility
- Gateway requirements
- Monitoring access
- Warranty
Complete system
- Panel-layout drawing
- Shade assessment
- Expected annual generation
- Predicted clipping
- Registered AC capacity
- G98 or G99 process
- Export limit
- Battery energy path
- Backup circuits
- Monitoring ownership
- Labour and roof-access cover
- Future expansion route
The current MCS installation standard requires a performance estimate and written technical information before the contract is awarded. MCS Solar PV Installation Standard
When is a string inverter likely to be better?
Start with a string inverter when:
- The roof is simple and receives similar sunlight
- Panels can be divided cleanly between available MPPTs
- Lower initial cost is important
- Central equipment access is preferred
- Panel-level monitoring is not essential
- A compatible DC-coupled battery is planned
- The installer can demonstrate an effective string design
When should you consider microinverters?
Give microinverters closer consideration when:
- Panels are split across several small roof sections
- Roof sections have several directions or pitches
- Recurring shade affects individual panels differently
- A viable string cannot be formed on a small roof section
- Panel-level monitoring is important
- Losing only one panel after a device failure is valued
- Phased expansion is genuinely planned
- The design benefit justifies the additional cost
Questions to ask before deciding
- Why has this architecture been recommended?
- What annual generation is predicted for the alternative?
- How has shading been modelled?
- Could separate strings or MPPTs solve the roof-layout issue?
- What clipping is predicted?
- What is the complete registered AC capacity?
- Which G98 or G99 process applies?
- Which batteries are compatible?
- What equipment is required for backup?
- Which circuits will remain powered during an outage?
- Is the monitoring gateway included?
- Who controls the monitoring account?
- What happens if one inverter fails?
- Do warranties include labour and scaffolding?
- How could more panels be added later?
- Are the exact panels and inverters confirmed as compatible?
Frequently asked questions
Is a string inverter or microinverter better?
A string inverter is normally the better starting point for a simple roof with similar panel conditions. Microinverters may be better where panels are split across several orientations or experience materially different shading.
Do microinverters generate more electricity?
Not automatically. They may recover additional mismatch losses on a complicated roof, but a good string system can perform similarly on a simple, unshaded array.
Does one shaded panel reduce the whole string?
It can affect the string’s operating point, but the result is not always a direct one-for-one reduction. Bypass diodes, panel design, string arrangement and inverter shade management all influence the outcome.
Are microinverters worth it on an unshaded roof?
They may provide panel-level monitoring and distributed failure resilience, but the generation benefit could be small. Compare the additional installed cost with a roof-specific annual-generation forecast.
Can a string inverter provide panel-level monitoring?
Not normally by itself. Panel-level monitoring generally requires power optimisers or other module-level equipment.
Can microinverters work with a battery?
Yes. The battery is normally AC-coupled and uses its own inverter. Compatibility, controls, backup operation and DNO requirements must still be checked.
Must I replace a string inverter to add a battery?
Not always. A separate AC-coupled battery can often be added alongside an existing solar inverter. A DC-coupled battery normally requires a compatible hybrid inverter.
Do microinverters work during a power cut?
Standard grid-connected microinverters normally shut down during an outage. Backup requires a specifically supported controller, isolation arrangement and backup circuits.
Are microinverters safer than string inverters?
They remove the long shared high-voltage DC string, but replace it with an AC roof circuit and multiple electronic devices. Both architectures require competent design and installation.
What happens when one microinverter fails?
The associated panel or panels normally stop generating while the rest of the array continues. Replacing the failed device may require roof access and panel removal.
Does a microinverter warranty cover scaffolding?
Not necessarily. A product warranty may provide replacement hardware without covering diagnosis, labour, scaffolding or panel removal.
Can more microinverters be added later?
Potentially, but the AC branch circuit, gateway, consumer unit, product compatibility, roof access and DNO approval must all support the expansion.
Are rooftop microinverters the same as plug-in solar?
No. Plug-in solar operates under a separate product framework. A conventional rooftop microinverter array remains a fixed solar installation.
String inverter or microinverters: the verdict
String inverters generally provide the simplest and most economical architecture for a straightforward roof. Modern models can manage separate roof directions through multiple MPPT inputs and may include effective shade-management software.
Microinverters provide greater panel-level flexibility and visibility. They can be particularly useful where panels are spread across several small roof sections or experience significantly different conditions.
Neither option is universally superior.
The final decision should be supported by:
- A roof-specific layout
- A proper shade assessment
- Like-for-like generation forecasts
- Exact equipment compatibility
- A clear battery plan
- Confirmed backup functionality
- G98 or G99 assessment
- Complete warranty and maintenance costs
Choose the complete system that suits the roof and the home, not the inverter with the strongest headline claim.