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Hybrid battery powers London tube works

Gridtogo helps cut running costs, CO2, noise pollution, and air quality levels while reducing carbon footprint

Power Electrics needed a noise-sensitive solution for the time-critical project
Power Electrics needed a noise-sensitive solution for the time-critical project

Off Grid Energy, the leading manufacturer of power solutions for the construction industry, has installed its largest and most powerful temporary power hybrid unit at Kennington Tube station in London.


Four new customer passageways are being built at the station as part of work on the Northern Line Extension which will extend the London Underground (LU) network from Kennington to Battersea Power Station via Nine Elms.


As construction sites have a substantial impact on air quality, Off Grid Energy has provided the gridtogo battery storage solution with a power output of 195kVA. Reducing generator running hours, the gridtogo results in a significant improvement in fuel efficiency, and a substantial reduction in polluting emissions, CO2 and noise pollution, all while cutting costs.


The unit has a storage capacity of 350kwhrs, setting the bar for energy storage technology in temporary power. It can also allow the use of a smaller generator, resulting in further fuel savings. The use of smart monitoring as standard means Off Grid can utilise real time energy data from this project to judge how much power is needed for future similar projects and so better size generators in the future.


Due to the residential location of the station, using the existing noisy generator during unsociable hours was not an option. LU’s contractor approached temporary power experts Power Electrics to deliver a noise-sensitive solution for the time-critical project.


By implementing the Off Grid Energy silent high power gridtogo system along with a modern super silent generator it allowed full power demand to be met 24/7, reducing the need to run the generator, enabling construction work to continue. Power Electrics has now provided the 300kVA super silent diesel generator with the 195kVA hybrid system to deliver a total power capacity of just under half a megawatt.


“With a power output of 195kVA and storage capacity of 350kWhrs it is conceivably the most powerful temporary power hybrid unit in the UK with the largest battery storage capacity in the UK for temporary power. The added flexibility that comes from dual power supply and improved power quality means that the solution delivers a multi-layer win: Lower cost, cleaner air, less CO2, elimination of noise and greater power supply resilience.”


When the battery located inside the unit is charged and the demand for power is low, the generator can automatically turn off and the energy stored in the battery is used to supply the load. The features of the gridtogo help considerably cut running costs, CO2, noise pollution, and air quality levels while simultaneously reducing carbon footprint.


Jones added: “Power Electrics had a challenge to deliver a power solution for London Underground that had the least environmental impact in terms of air quality and noise pollution. Noise and CO2 emissions are major issues in London and construction is a key contributor to poor air quality. It is great that London Underground is committed to demonstrating best practice and that alternative technologies can deliver both environmental and cost benefits for temporary power solutions in London.”


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