Case Studies
Six-story car park by Smiths Cranes, East Tamaki, NZ.
Saved thousands by replacing two diesel generators with a single Cranepower unit.
Power Requirements: 300kVA.
Crane Type: COMANSA 21CM1100 – 144kVA and TEREX CTT721 – 200kVA.
Input Feed: 32A, 400V 3-phase.
Annual CO2 Reduction: 219 tonnes.
Date: 2023.
Smiths Cranes was contracted to construct a six-story car park and factory, requiring the installation of two flat-top tower cranes: the COMANSA 21CM1100 – 144kVA and TEREX CTT721 – 200kVA. However, the site did not have a power supply available from the mains. Smiths Cranes had planned to install two 300kVA diesel generators to power the cranes which have a peak power draw of 420A.
Upon learning about Cranepower's product, they opted to install a single CP-300 unit to power both cranes, instead of the generators. The use of the CP-300 unit instead of two diesel generators not only saved the company hundreds of thousands of dollars, it also saved space on the construction site and reduced the project's carbon footprint by 219 tonnes annually, helping the company achieve its sustainability goals.
Commercial building by Smiths Cranes & Naylor Love, Albany, NZ.
Powering New Zealand’s largest crane – Kroll 1650L
Power Requirements: 300kVA.
Crane Type: Kroll 1650L – 320kVA.
Input Feed: 32A, 400V, 3-phase.
Annual CO2 Reduction: 180 tones.
Date: 2023.
Our CP-300 was chosen to power NZ’s largest tower crane on a critical Naylor Love project, saving 15 tonnes of CO2 each month.
Transformer delays on this Naylor Love project left them scrambling to find a power solution for the large Kroll 1650L tower crane. Smith Cranes presented Naylor Love with two options: a 450kVA generator running 60 hours a week and burning over 1000L of diesel each week, or a CP-300 that simply plugs into their existing general site power.
Naylor Love immediately chose the CP-300 option as it was cheaper, quieter, and better for the environment than the diesel generator option.
The CP-300 gave Naylor Love a low-emission way to stay on schedule.
Retirement village by Kalmar Construction, Kerikeri, NZ.
Successfully reduced noise and emissions by over 80 tonnes
Power Requirements: 150kVA.
Crane Type: Liebherr 200 EC-B 10, 90kVA.
Input Feed: 16A, 400V, 3-phase.
Annual CO2 Reduction: 80 tonnes.
Date: 2023.
Kalmar Construction were building a retirement village in Kerikeri, a beautiful small town in the north of New Zealand. They needed to power a Liebherr 200 EC-B 10 crane, installed at the centre of the site. Originally, they had planned to use a 200kVA diesel generator for the job. However, after learning about the advantages of the Cranepower units, they decided to switch to a Cranepower CP-150.
Despite only drawing 16A of power from the general site power, the Cranepower CP-150 provided reliable and consistent power to the crane. By using the CP-150, Kalmar was able to reduce their CO2 emissions by approximately 80 tonnes per year while increasing their productivity and saving money.
11-story hotel site by Safari Group, Ellerslie, NZ.
Successfully reduced noise and emissions by over 185 tonnes.
Power Requirements: 300kVA.
Crane Type: JASO J280PA, 200kVA.
Hoists: 2 x 50kVA.
Input Feed: 32A, 400V, 3-phase.
Annual CO2 Reduction: 186 tonnes.
Date: 2021.
Construction & development company Safari Group installed a Cranepower CP-300 system in 2021 to power a JASO J280 luffing crane and two 50kVA personnel hoists on a commercial construction site in Ellerslie, Auckland. The CP-300 was fed by a single 32A feed.
The large, European-made JASO crane has a peak load over 200kVA, and the hoists required a further 100kVA. This would have required a 500kVA diesel generator or 400A grid feed to be installed in the centre of the site. Both these options were impractical and expensive. Additionally, the site was situated within an established business park, meaning noise and environmental impacts needed to be kept to a minimum.
By using the CP-300 system, Safari Group has been able to significantly reduce installation and operational costs while simultaneously maintaining low levels of noise and reducing the site carbon footprint by over 180 tonnes in the first year of operation.
Multi-story medical centre by Cassidy Construction, Remuera, NZ.
250kVA diesel generator replaced by CP-150 zero-emission option.
Power Requirements: 150kVA.
Crane Type: Terex CTL-260 - 165kVA.
Input Feed: 16A, 400V 3-phase.
Annual CO2 Reduction: 84 tones.
Date: 2024.
Cassidy Construction needed to find a way to power the Terex CTL-260 luffing tower crane on a project in Remuera, Auckland. The grid connection was not large enough to support the crane. Instead of taking the traditional approach and installing a 200kVA generator for the crane, Cassidy chose the CP-150 and simply plugged it into their existing temporary site power supply, eliminating the need for a generator all together.
Cassidy are saving money, reducing noise and fumes and are preventing 7 tonnes of CO2 emissions each month.
Highrise building by Watts & Hughes Construction, Auckland CBD, NZ.
Successfully reduced the sites carbon footprint by over 185 tonnes.
Power Requirements: 300kVA.
Crane Type: POTAIN MCR 295, 220kVA, luffing crane.
Hoists: 40kVA personnel hoist.
Input Feed: 16A, 400V, 3-phase.
Annual CO2 Reduction: 185 tonnes.
Date: 2021.
Watts & Hughes were constructing a building in Auckland CBD and had been using two diesel generators to power their tower crane and personnel hoist for the past 2 years. The generators were causing constant problems with noise, diesel fumes and complaints from neighbours. The site had a 63A builders temporary supply which was used for general site power and site offices.
To address the noise and emissions problems caused by the generators, Watts & Hughes installed a CP-300 in April 2023 to provide power to both the tower crane and the personnel hoist. The CP-300 was set to only draw 16A from the general site power and was plugged into one of the site power distribution boxes. The use of the CP-300 system has had several positive results for Watts & Hughes. First, it has helped them reduce noise and emissions on the construction site, which has improved relations with their neighbours. Second, the CP-300 system has provided reliable and efficient power to the tower crane and personnel hoist, which has improved productivity and reduced downtime. Third, the use of the CP-300 system has helped them reduce their operational costs by eliminating the need for two diesel generators. Finally, the use of the CP-300 system has helped them reduce their carbon footprint by over 185 tonnes annually.
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