Concrete delivery is short, repetitive and stop-start, which is exactly where an electric truck beats diesel. The Dongfeng TZ8J 8x4 mixer carries an 8 m3 drum on a 350 kWh CATL LFP pack with a 360 kW LvKong motor, rated for 200 km and GVW around 31 t loaded. Diesel mixers idle the drum all day; an electric mixer drives the drum hydraulics from the pack and the motor only spins when moving. This 5-year cost comparison uses real urban concrete duty to show the saving.
| Cost line (150,000 km) | Diesel 8 m3 mixer | TZ8J electric mixer | Saving |
|---|---|---|---|
| Fuel or energy | $58,000 | $18,000 | $40,000 |
| Maintenance | $22,000 | $9,000 | $13,000 |
| Drum hydraulics (PTO fuel) | $9,000 | $0 | $9,000 |
| Brakes (regen) | $4,500 | $1,500 | $3,000 |
| Idle-time diesel | $11,000 | $0 | $11,000 |
| Total 5-yr operating | $104,500 | $28,500 | $76,000 |
| FOB price | $70,000 | $78,000-$98,000 | -$8k to +$28k |
The electric TZ8J costs $8,000 more at the low FOB end and up to $28,000 more at the high end, but the 5-year operating saving of about $76,000 more than covers it. Payback lands in year two for a busy urban mixer doing 30,000-40,000 km a year.
A city mixer runs 120-200 km a day across 12-20 short drops, idling the drum between pours. Diesel burns fuel the entire idle; the TZ8J powers the drum from the pack with the traction motor off, so energy spent on idling drops to near zero. Regenerative braking on the return-to-plant leg returns 15-25 percent of traction energy, and the 200 km range covers two full shifts on one charge for most batched plants.
Idling is the hidden diesel cost nobody quotes. A drum engine at idle burns 2-3 L per hour; over a 10-hour shift that is 20-30 L, or about $25-$30 a day, $6,000-$7,000 a year, and it adds no metres to the odometer. The electric drive removes this line entirely and cuts noise at the same time, which matters for the next point.
City bylaws in many markets limit diesel mixer noise after 22:00, blocking night pours that keep roadwork clear of daytime traffic. The TZ8J runs at 65-70 dB versus 85-90 dB for diesel, often qualifying for night-pour permits that open a third shift of revenue. For Indonesian contractors working Jakarta and Surabaya congestion windows, that permit can be worth more than the fuel saving.
Indonesia's island cities and toll-road builds need short-loop concrete with growing low-emission rules, which favours the TZ8J for batched-plant fleets. Review electric trucks in Indonesia for import duty and charger access at plants.
The model page for the Dongfeng TZ8J electric mixer truck carries the 350 kWh pack, 8 m3 drum and GVW rating your costing needs.
| 5-year line (150,000 km) | Diesel mixer | TZ8J electric |
|---|---|---|
| Operating cost | $104,500 | $28,500 |
| FOB | $70,000 | $88,000 |
| Finance at 9% (5 yr) | $17,000 | $21,000 |
| Resale year 5 (40%) | -$28,000 | -$35,000 |
| Net 5-yr cost | $163,500 | $102,500 |
Even after financing the higher FOB, the TZ8J lands about $61,000 cheaper over five years, because the $76,000 operating saving dwarfs the $18,000 FOB gap and the small finance delta. The night-pour permit adds a third shift of revenue on top, which the table does not count, so the real gap favours the electric mixer further. For a 10-truck fleet that is $610,000 of freed capital over the period.
The TZ8J drops the engine oil, the DPF, the turbo, the clutch and the PTO hydraulic pump from the service plan. Scheduled items are coolant every 2 years, brake fluid every 2 years, the 12V battery every 3 years, and a gearbox oil check on the e-axle every 60,000 km. Brake pads last two to three times longer because regen does most of the deceleration. A diesel mixer of the same class needs engine service every 15,000 km and a hydraulic pump rebuild every 2-3 years, which is where the $13,000 maintenance gap comes from.
Order the plant charger when you sign the truck, not when it lands: a 180 kW DC unit needs a 250 kVA supply and a 6-10 week lead time. Pour a flat bay with a 1 percent fall and a weather cover so the drum and coupler stay clean. Train the batch plant operator on the charge curve so the pack returns to 90 percent between the morning and afternoon pours. Map the 200 km range against your longest batch-to-site leg plus the return, and keep one truck on a spare pack rotation so a fault never stops the pour.
The electric drive also steadies concrete quality. A diesel mixer lets drum speed sag as the engine loads up a grade, which can over-mix or segregate the load; the TZ8J holds drum rpm from the pack regardless of road grade, so slump stays consistent from plant to site. The driver sets drum speed on the cab panel and the hydraulic pump draws only what the drum needs, no more, which is part of the energy saving. For structural pours where consistency is specified, that control is a selling point to the contractor, not just a cost line, and it reduces rejected loads that waste a full 8 m3 batch and the return trip to the plant.
The lower noise and zero exhaust at the chute also improves site safety, because the operator can hear hand signals and the crew is not standing in diesel fumes during the pour. In enclosed plant yards and tunnels this matters for permit compliance as much as for comfort. The TZ8J's flat, low-noise profile lets it work where a diesel is restricted, which is the same permit advantage that opens night pours above. Fleets report fewer near-misses at the chute once the engine note is gone and the only sound is the drum and the pump, and insurance reviewers note the cleaner site in their renewal terms.
On a 24-hour ready-mix site, a 5-6 minute battery swap between the morning and afternoon pours keeps the TZ8J turning instead of sitting on a charger for an hour. The 350 kWh pack is swap-ready, so a single shared pack pool across three mixers covers the peak without buying a pack per truck. For Indonesian contractors bidding continuous foundation work, that swap option removes the one limit the 200 km range might hit on a double shift, and it is the reason the TZ8J fits both batch plants and continuous sites from one chassis. Plan the swap bay beside the batch plant so the exchanged pack charges on off-peak power overnight.
For a batched-plant fleet doing 120-200 km a day, the TZ8J beats diesel on operating cost, idle saving, night-pour permits and concrete control, with payback in year two even after financing. Size the plant charger before delivery, train the operator on the charge curve, and map the 200 km range against your longest leg. Review the model page for the drum and GVW rating, and the market page for Indonesian import duty and charger access, then lock the order while the incentive is current so the saving is locked into the contract.
Ready to electrify your fleet? Contact Shaanxi Fenghan Trading — authorized Dongfeng EV truck exporter. WhatsApp: +86 153 1943 1311 | Email: sales@fenghan-trade.com | dongfengevtrucks.com
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