This energy centre will be a hugely important part of the new neighbourhood town centre at Battersea Power Station, supplying energy not only to its own community but potentially to other local residents nearby. This energy centre provides an important link to this fantastic building’s past, as a local source of power in the nation’s capital once again.
Gary Edwards, Battersea Power Station Development CompanyThe energy centre is located in the building’s basement, with two floors being excavated below ground level to provide the space necessary to cater for all the large equipment. Another benefit of this location was that it would be hidden from sight from the residents and allowed the developers to maximise all ground space to construct residential properties, retail units and green spaces.
The energy centre has also been acoustically protected to reduce sound pollution. This was particularly important because in order to comply with planning, we must make sure that the energy centre’s sound levels are very low. As the energy centre is underground, a ventilation solution was needed. We designed large openings in the ground floor to provide a free area for supply and extracting fumes, along with plenums located above the energy centre.
The energy centre is split into zones and levels, which provide the heating, cooling, electricity generation, electricity distribution, heating and cooling distribution, water treatment and bore hole extraction all from the same building.
The only exception is the existing energy centre from the first phase, which will no longer provide heating and hot water individually, but instead will be connected to the main energy centre to provide additional resilience to the network.
We have increased the efficiencies of the solution by designing a bore hole extraction area, which will capture water from below the ground to be treated in our water treatment tanks and utilised in the system. This minimises the necessity to use water from the national network.
We analysed the heat profiles to create a design which could cater for the growing load and applying a flexible approach to adapt to the changing nature of the development. The energy centre plant will be installed in two phases: phase 1 includes two 2MWe CHP engines, two 10MW boilers and three 4MW chillers; and phase 2 includes the remaining one 10MW boiler, one 3.3MWe CHP engine and three 4MW chillers. As the plant had to be installed by lowering through demountable sections in the roof of the energy centre and down the two levels, it was essential that the future plant could also utilise this route. We had to be considerate of this factor when designing the pipework and ventilation systems inside the energy centre to avoid this area for the future plant installations.
The North East and South West chimneys have been adapted to be utilised by the energy centre’s flues. The North East chimney will be used by the main energy centre and the South West chimney will be incorporated into the existing energy centre with a new flue installed by us. The chimneys will have been refurbished and rebuilt by a third party to match the historical features of Battersea Power Station and make them structurally sound.
We adapted them internally with gantries and platforms to support the structure of the flues, which in turn removes the necessity to construct additional separate flues. The exhaust flues for the boilers and CHPs will rise up the building using the wash tower and then through the existing chimneys in a total length of 960m, to once again make Battersea Power Station a generator of energy.