Emissions and Energy

Converts a node's gas consumption into useful energy (GJ, kWh) and into CO2 plus CO2-equivalent emissions, with a monthly breakdown and period comparison.

A report for a single metering node: it converts the gas consumed into useful energy (gigajoules and kilowatt-hours) and into carbon-dioxide emissions. It is for the environmental officer, the energy manager, and the site manager — to understand how much heat the gas delivered and what carbon footprint it left behind.

This is a calculation for a single node. For a summary across the whole device fleet there is a separate Decarbonization report in investor format.

What it shows

Block	What it means
Gas consumed	total volume over the period, m³
Thermal energy	how much heat this gas delivered on combustion (GJ and kWh)
Direct CO₂	carbon dioxide from burning the gas, tonnes
Fugitive methane leakage	the portion of gas that escapes into the atmosphere unburned (pipe leaks, loose fittings); methane is a potent greenhouse gas
Total CO₂ equivalent	direct CO₂ plus the effect of the leaked methane, expressed as CO₂
Comparison with the prior period	the same indicators for a preceding stretch of equal length — showing whether it went up or down

The report includes a monthly chart (gas volume and CO₂) and a table by month.

How it works

The report takes the node’s hourly consumption archive, sums it by month, and applies coefficients:

Energy = gas volume × calorific value (37.0 MJ/m³ by default).
Direct CO₂ = gas volume × emission factor (1.96 kg CO₂ per m³ by default).
Methane leakage = gas volume × leak percentage × methane density; its effect is then amplified by the global warming potential (GWP), because methane is more harmful than CO₂.
Total CO₂ equivalent = direct CO₂ + the effect of the methane leakage.

If the device passport specifies a real gas density, methane fraction, or calorific value, the report uses those instead of the defaults, and the calculation becomes more accurate. Months with data gaps are accounted for: the report shows how many hours of the month actually had data.

The coefficients are averages for natural gas under standard conditions. For official reporting, use the values approved by the regulator.

Run parameters

Parameter	Default	What it means
Node #	required	which metering node to analyze
Period from	one year ago	start of the analysis window
Period to	yesterday	end of the analysis window
Calorific value	37.0 MJ/m³	how much energy 1 m³ of gas delivers
CO₂ factor	1.96 kg/m³	CO₂ emission per 1 m³ of gas burned
Methane density	0.717 kg/m³	weight of 1 m³ of methane
Global warming potential	28	how many times more harmful methane is than CO₂ (100-year horizon)
Leak share	0.15 %	what portion of the gas is lost unburned
No comparison	off	do not load the prior period

How to read the result

Look first at the “Total CO₂ equivalent” and at the comparison with the prior period. Growth in volume and emissions is highlighted; a decrease is noted as an improvement.

Change vs the prior period	How to interpret
within ±5 %	stable, ordinary fluctuation
±5…15 %	weather or a change in the operating mode
±15…30 %	a notable deviation worth explaining
more than ±30 %	a sharp anomaly — check the site’s operating mode and sensor health

What to keep in mind:

The 0.15 % leak share is a default estimate. The real value depends on the condition and age of the network; set your own if it is known.
If a month has few hours with data, its figures are understated — check the data-completeness column.