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NABO Fuel and CO₂ Estimating Tool

The idea is that you can quickly understand the costs and carbon footprint of the boating life. The model can be set for a range of lifestyles, and then edited if you so wish to suit your usage and fuel use. Press the recalculate button and the tools will display an annual summary of the cost and carbon dioxide emissions. It may also suggest some changes. You can experiment by changing your consumption pattern or fuel selection to see what happens. The tool has preset figures for costs based on common knowledge, and you can change these if you know better. This is an estimating tool, it is not a predictor of the present or future.

Select Preset

Liveaboard heavy use Leisure light use Share boat Leisure summer use Day boat Leisure all year Liveaboard minimum use Liveaboard towpath mooring Liveaboard marina mooring All zeros

Boat & Use

Date (dd-mm-yyyy):
Boat Name:
Summer Days: Days on board with no heating.
Winter Days: Days on board with heating.
Navigation Days: Days cruising.
Cruising Hours per Navigation Day: Hours cruising per day.
Engine Days (stationary, heat/charge): Days running engine but not cruising.
Engine Hours per Engine Day: Hours running engine but not cruising per day.
Heating Hours per Winter Day: Hours heating is on per day, gas and LPG only.
Domestic Electrical Load (kWh/day): Domestic electricity per day in KwH.
Electric Heating (kWh/day, optional): Additional electricity for heating KwH per day.

Fuel Choices

Fuel for Propulsion: Red Diesel HVO Petrol All Electric Hybrid Hybrid (genset supplies motor energy; Red diesel and HVO only.) Hybrid power to domestic load fraction: (0–1)
Fuel for Heating: Smokeless Solid Fuel (25kg) Dry Wood (20l) Gleaned Wood (20l) Heating Oil Heating HVO Oil LPG (13kg)
Fuel for Cooking: LPG (13kg) Heating Oil Heating HVO Oil

Alternative Energy Sources

Solar Panels Size (kW):
Shore Hook-up Available kWh/day:
Petrol Generator Available kWh/day:
Engine Alternator Alternator Ah (@12V):

Your annual occupancy is 155 days.
Your annual engine hours were 600.0 hours.
Your propulsion fuel was Red Diesel at an effective price of £1.20/litre (60/40 split applied).
Your heating fuel was Smokeless Solid Fuel (25kg), with an annual consumption of 0.0 kg.
Your effective usage split was 60.0% propulsion and 40.0% heating, compared to HMRC’s fixed 60/40 split.
Overall, your propulsion + heating + cooking costs were £1,218.99 with associated CO₂ emissions of 2,485.2 kg.

Advisories

• Consider switching propulsion fuel to HVO for lower CO₂ emissions and potential cost benefits.
• Cooking with LPG is already a very low carbon footprint. Changing to diesel or generated electricity will increase CO₂.
• Consider installing solar panels and an immersion heater to reduce diesel use when running engine for heat and power.

Annual Fuel Cost and CO₂ Summary

Fuel	Annual Usage	Annual Cost (£)	Annual CO₂ Emissions (tonnes)
Propulsion Red Diesel	750.0 L	£900.00	2.010
Heating Smokeless Solid Fuel (25kg)	107.1 kg	£85.71	0.279
Cooking LPG (13kg)	66.7 kg	£233.28	0.197
Total	-	£1,218.99	2.485

Alternative energy annual totals

Source	Estimated kWh	Notes	CO₂ Emitted (t)
Solar	110.5 kWh	Free from the sun (weather dependent)	0.000
Engine Alternator	57.5 kWh		0.000
Total (kWh)	168.0 kWh		0.000 t

Daily energy balance winter on mooring

Source / Load	kWh per Day
Solar	12.00
Hookup	0.00
Petrol Generator	0.00
Engine Alternator	0.84
Hybrid Power to Domestic	0.00
Total Generation	12.84
Base Load	3.00
Heating	5.00
Total Demand	8.00
Net Balance	4.84