Council installs cogen units at public pools to cut energy costs, emissions

One Step Off The Grid

Darebin City Council in Melbourne’s north has completed a major energy retrofit project at its two community swimming pools – two of the local government area’s largest energy users – that will save it an expected  $100,000 on operational costs a year.

Screen Shot 2015-08-20 at 12.35.31 pm

The $2.1 million project, which received $875,800 in funding from the federal government’s Community Energy Efficiency Program (CEEP), included the installation of gas-fried cogeneration systems at both the aquatic centres in Northcote and Reservoir, as well as LED lighting, thermal pool blankets and building and air-conditioning upgrades to boost thermal efficiency.

The on-site cogeneration units installed at the two pools – a 75kW system at Reservoir and a 122kW system at Northcote – will together account for more than half of the projected cost savings, generating most of the sites’ electricity and using the waste engine heat to help heat the pools and change rooms.

Screen Shot 2015-08-20 at 12.35.14 pm

The systems incorporate an easy-to-use remote monitoring interface that allows the centres’ management to view the performance of the systems in real time, and analyse historical data, to help identify opportunities to improve the units’ performance.

Screen Shot 2015-08-20 at 12.34.55 pm

Darebin Council said it had chosen to go with the natural gas-fired cogen systems – both of which were supplied by Schmitt Enertec – rather than rooftop solar, due to the ability to run the cogen around the clock, and because the greenhouse gas savings from cogeneration were identified as significantly higher than that from a large-solar power system.

Council documents say that while payback for cogeneration was somewhat longer than for solar, the former was still considered an acceptable choice, given the significant greenhouse gas savings possible.

Darebin climate change action officer, Indy Lingham, said the Council would now continue to work on improving the energy efficiency in all of its remaining council buildings, as well as working with constituents to cut their energy use.

This article was originally published on our sister site, One Step Off The Grid. To sign up for the weekly newsletter, click here.

Comments

3 responses to “Council installs cogen units at public pools to cut energy costs, emissions”

  1. Ronald Brakels Avatar
    Ronald Brakels

    So solar was cheaper but they decided to go for gas cogen because of lower emissions? This makes me wonder if they are counting reductions in emissions from Victoria’s coal power stations as a result of the electricity they export to the grid. If so, while it seems odd, gas cogen might have been a tactically better choice in the fight against climate destabilisation since monsters are real and they are Victoria’s brown coal power stations.

    1. Coley Avatar
      Coley

      Darebin Council said it had chosen to go with the natural gas-fired cogen systems – both of which were supplied by Schmitt Enertec – rather than rooftop solar, due to the ability to run the cogen around the clock, and because the greenhouse gas savings from cogeneration were identified as significantly higher than that from a large-solar power system.

      Council documents say that while payback for cogeneration was somewhat longer than for solar, the former was still considered an acceptable choice, given the significant greenhouse gas savings possible.

      Eh? Natural gas generation produces less emissions than PV? What am I missing?

      1. Ronald Brakels Avatar
        Ronald Brakels

        Yeah, that’s why I’m wondering if they included the emissions from brown coal generators that electricity exports from their system would displace in their calculations. Because without considering that andlooking at four year old figures, solar should still have less about one fifth the emissions of gas cogen. Probably much less.

        Now there could definitely be circumstances that I am not aware of, but it does seem odd.

Get up to 3 quotes from pre-vetted solar (and battery) installers.