Monitoring a Landfill Gas Site: Why Landowners Should Protect Their Revenue

If you own a landfill (LFG) site as a local authority or as part of your corporate portfolio, monitoring the landfill gas project is a crucial aspect of your land stewardship.

And it isn’t simply a technical routine for landfill site operators: It’s the foundation of your site’s safety, compliance and financial performance.

Landfill gas is mainly methane (CH?) and carbon dioxide (CO?). Both are hazardous, as methane is highly flammable and a powerful greenhouse gas, while CO? can displace oxygen and pose risks to people working on or near your land.

For LFG landowners, the risks of monitoring a landfill gas site poorly are serious:

• Breaches of Environmental Permitting Regulations (EPR) can lead to financial penalties or enforcement action
• Civil liability if gas escapes onto neighbouring property
• Reputational damage with regulators and local communities
• Lost renewable energy revenue if generation data can’t be verified

So, monitoring landfill gas isn’t just about compliance for landfill site operators. It’s about protecting your asset, your income and your long-term estate value.

In this blog, I’ll discuss why monitoring a landfill gas site matters for LFG landowners, what’s generally monitored on-site and common gaps to look out for.

Why Monitoring a Landfill Gas Site Matters

It’s easy to assume that landfill monitoring is purely a landfill gas operator’s duty. But the implications of how well (or poorly) it’s done can directly impact you as the LFG landowner.

The biggest risks for landowners come not from catastrophic site failures, but from small gaps that add up over time.

Regulatory compliance

Environmental regulation places a legal obligation on landfill sites to monitor gas flows, flare stack performance, emissions and off-site migration.

While day-to-day operations and monitoring may be carried out by your landfill site operator, ultimate responsibility often sits with the landowner.

The site operator’s name is on the permit, but reputational damage may arise if any compliance failures for a site become public.

Insurance and liability

Insurers expect landfill sites to be proactively managed, and robust monitoring is part of that. If site monitoring is inconsistent or substandard, insurers may take the view that the landowner and site operator weren’t properly managing risk.

This can result in higher premiums, reduced cover or disputes if you ever need to make a claim after an incident on your site.

In extreme cases (say, gas migration affects neighbouring properties around your site), you could face direct civil liability if you don’t demonstrate that your site was properly monitored.

Revenue assurance

Many landfill sites generate income from exporting electricity. But with that revenue comes scrutiny.

These revenues are only as secure as the data backing them. Offtakers Ofgem and support schemes such as Renewable Obligation Certificates (ROCs) and contracts for difference (CfDs) require accurate, auditable evidence of volumes and of electricity produced.

If these records don’t hold up, payments can be delayed or clawed back.

As a LFG landowner, this hits your income directly and makes monitoring not just an environmental safeguard, but a financial one.

Reputation and community trust

Hosting a landfill site comes with scrutiny from the public, as well.

If you’re monitoring a landfill gas site with strong, transparent data, you’ll show that the site is being managed responsibly and safely. This builds goodwill with many stakeholders, including neighbours, parish councils and planning authorities.

In practice, that goodwill can smooth the path for estate management decisions, permit renewals or even future redevelopment of the land.

By contrast, poor monitoring can quickly damage trust and make communities resistant to any new proposals on your land.

What Goes Into Monitoring a Landfill Gas Site

LFG  landowners don’t need to run the landfill gas equipment, but it’s always wise to know what’s being tracked and why. It’s also important to know how your landfill gas site is performing, as this could impact your reputation and financial returns.

Gas composition and emissions

Continuous Emissions Monitoring Systems (CEMS) track methane, CO?, oxygen and sometimes trace pollutants. The Environment Agency’s Monitoring Certification Scheme – known as MCERTs – sets standards for this kind of monitoring equipment.

Regulators only accept MCERTS-certified equipment. So, if your landfill site operator can’t show MCERTS compliance, you risk audit rejection.

There’s also a risk of fines, penalties, disruption to operations and reductions to income as a result.

Flare stack performance

The flare burns landfill gas safely. Combustion temperature must exceed 1,000°C, and any downtime, flare outages or temperature drops must be logged and explained. If logs aren’t complete, it’s the site’s permit that’s at risk. This can cause the same disruptions or reductions to income that I mentioned above.

Perimeter monitoring

Boreholes around the site boundary track potential gas migration. Even low methane levels at the edge of your land can trigger regulatory action.

As the landowner, you should expect monthly records, and these should be more frequent if your permit or past exceedances demand it.

Data management

Regulators and buyers expect years of reliable digital records: flare logs, perimeter walls, maintenance reports, accurate electricity generation, volumes, gas readings, and calibration certificates.

As the LFG landowner, this means monitoring is not only compliance protection but revenue protection. If data is incomplete or inconsistent – or your site operator can’t provide it on request – the regulator could issue enforcement notices, fines or even operational restrictions.

And if your site operator is still using paper files or spreadsheets with no central audit trail, it won’t stand up in an inspection. This could expose the site to reputational damage, penalties, and potential lost income.

What LFG Landowners Should Be Asking

You don’t need to be in the weeds of calibration schedules or sensor models. Instead, ask your landfill site operator the right questions:

If your site operator can’t answer these questions clearly, you may be carrying more risk than you realise.

The Bottom Line for Owners

Monitoring isn’t a technical footnote. It’s the backbone of compliance, safety and revenue for landfill sites.

As a landowner, you need confidence that your landfill gas operator is delivering:

• Continuous monitoring with certified equipment.
• Transparent, audit-ready records.
• Prompt action on gas migration or flare downtime.
• Data that secures the revenue you’re entitled to.

If those elements aren’t in place, your site and your income are at risk. Strong monitoring is all about protecting your estate, safeguarding your revenue and securing your reputation for the long term.

As a site owner, a key step in maximising your income is knowing whether your landfill gas operator’s monitoring and reporting stack up. Too often, payment errors, weak recordkeeping, or operator oversights only surface when regulators or offtakers are already asking questions.

With our Lumify SiteView360™, you will receive a complete historical review of your payments to ensure everything is accurate and up to date. If we find something that doesn’t look quite right, we’ll help you get back on course. Get in touch and we’d be happy to help.