Dangote Petroleum Refinery’s decision to increase its diesel gantry price to ₦1,800 per litre could raise fuel expenses for construction companies operating heavy equipment, adding pressure to project budgets in the fourth quarter of 2026.
The refinery raised its Automotive Gas Oil (AGO), commonly known as diesel, price by ₦100 per litre, from ₦1,700 to ₦1,800, effective October 10, according to reports citing a notice sent to customers. The increase represents a 5.88 per cent adjustment and came three days after the refinery reduced the price from ₦1,780 to ₦1,700 per litre. <Cite refs={["turn855962search1","turn855962search2"]} />
The latest increase partly reversed the reductions introduced earlier in October. On October 1, the refinery had cut its diesel price from ₦1,850 to ₦1,780 per litre, before announcing the subsequent reduction to ₦1,700.
For construction firms, the price movement raises questions about fuel budgets for excavators, bulldozers, motor graders, rollers and other diesel-powered equipment used in earthworks, road construction, excavation and materials handling.
However, the effect on operating rates will depend on the price contractors actually pay for diesel, the amount consumed by each machine and the terms of their equipment hire agreements.
Higher fuel prices could increase daily equipment costs
Diesel is a direct operating expense for contractors who supply their own fuel. When its purchase price rises, the additional cost depends on consumption.
Figures published in the Nigeria Construction Rate Book by Buildocrat, with prices dated October 6, put the estimated daily diesel consumption of a 20–22-tonne excavator at 150 litres. At an additional ₦100 per litre, that consumption would produce an extra ₦15,000 in daily fuel expenditure if the full price increase reaches the contractor and usage remains unchanged. <Cite refs={["turn855962search0"]} />
Over 20 operating days, the additional expenditure would amount to ₦300,000 for that machine. A contractor operating several excavators or other diesel-intensive equipment could face a larger cumulative bill.
These calculations illustrate possible exposure rather than a confirmed increase in equipment operating rates. Actual fuel consumption varies with machine condition, workload, operating hours, site conditions and idle time. The published figures are also indicative estimates, not independently verified measurements for every project.
Gantry prices do not determine site costs
The refinery’s gantry price is not necessarily the price paid by construction companies purchasing diesel through depots or arranging delivery to project sites.
A report by Legit.ng on October 11 put depot prices at between ₦1,720 and ₦2,000 per litre, depending on the supplier. The range illustrates why contractors need to assess their actual procurement costs rather than apply the refinery’s price change uniformly across their operations. <Cite refs={["turn855962search1"]} />
Transportation, supplier margins, purchase volumes and delivery locations can all affect the final cost of diesel at a construction site.
The impact may also differ between contractors that buy fuel directly and those that hire equipment under arrangements that include fuel and an operator.
Under dry-hire agreements, fuel is generally the contractor’s responsibility, subject to the contract terms. Under wet-hire or all-inclusive arrangements, the treatment of fuel costs depends on what the agreed rate covers and whether price-adjustment provisions apply.
An increase in diesel prices does not, by itself, establish that equipment hire rates have risen across the market.
Contractors face Q4 budgeting decisions
The latest adjustment comes as construction firms plan and execute projects during the final quarter of the year. For projects with substantial excavation, earthmoving or haulage requirements, changes in fuel procurement costs can affect the accuracy of operating budgets.
Contractors and quantity surveyors may need to review the diesel assumptions used in equipment rates, particularly where work will continue over several weeks or months.
They should also distinguish between higher fuel prices and higher consumption. A machine using more diesel because of prolonged idling, difficult ground conditions or inefficient deployment may increase project costs even when the price per litre remains unchanged.
Monitoring fuel consumption against completed work can help project teams identify whether expenditure is rising because of price changes, reduced productivity or both.
Contractors operating under fixed-price agreements should also review their contractual provisions before seeking to pass additional costs to clients. Whether a fuel-price adjustment is permissible depends on the terms of the contract.
Price volatility remains the key concern
The sequence of price changes in early October highlights the need for construction businesses to monitor diesel costs regularly.
Dangote Refinery’s gantry price moved from ₦1,850 per litre on October 1 to ₦1,780, then ₦1,700 on October 7, before rising to ₦1,800 on October 10. The latest rate remains ₦50 below the October 1 level. <Cite refs={["turn855962search2","turn855962search15"]} />
For contractors, the practical concern is how these adjustments translate into the cost of delivering work. The impact will depend on site-level fuel prices, equipment utilisation, productivity and the allocation of fuel expenses between equipment owners and clients.
There is not yet sufficient evidence to conclude that the latest increase has caused a uniform rise in equipment hire rates or construction costs nationwide.
As the fourth quarter progresses, dated supplier quotations and actual equipment fuel records will be more reliable guides for project budgeting than the refinery’s gantry price alone.
