mpressed with the performance of Dunedin Hospital's electronic environment control system are (from left) Southern DHB mechanical team leader Ritchie Fieldwick, electrical team leader Geoff Padman, facilities and site development manager Warren Taylor and Honeywell service technician Tim Doidge. Supplied photo.
A raft of changes, including replacing 16,000 light tubes,
has helped Dunedin Hospital save more than $2 million in
energy costs in the past four years.
The hospital signed a seven-year $1.6 million energy retrofit
deal with international company Honeywell Building Solutions
in 2008, which was designed to reduce energy consumption and
Honeywell's guarantee that the energy savings would meet the
cost of the upgrades over the course of the contract has
already been exceeded.
The hospital now expects to save $4 million by 2016 - taking
up to $500,000 off its previously $1.3 million-plus energy
bill per year.
''We were able to identify key areas where we could
significantly reduce our energy usage without compromising
the hospital's operations,'' Southern District Health Board
facilities and site development manager Warren Taylor said.
Many of the changes were made ''behind the scenes'', such as
installing hot-water flow restrictors, switching to
electronic environment controls, and altering the lighting
system. Southern District Health Board mechanical team leader
Ritchie Fieldwick said lighting levels in the ''over-lit''
hospital had been reduced to standard levels during the
''The difference is slight; neither patients nor staff would
notice any impact,'' Mr Fieldwick said.
Relatively minor changes, such as the hot-water restrictions,
were simple to achieve, but had made a significant
difference, he said.
Mr Taylor said installing electronic environment controls had
reduced the hospital's reliance on the steam pumped from the
Energy for Industry boiler house, which heated the wards.
Steam from the boiler house is also used by the University of
Otago and Cadbury, he said.
The project would not have been possible without the support
of the Energy Efficiency and Conservation Authority, which
had provided a grant of about $300,000 and a loan of about
$1.5 million to cover the cost, Mr Taylor said.
The success of the energy savings project meant the Southern
District Health Board was able to pay back the EECA loan from
the savings it was making, without adding to capital
pressure, he said.
''And, best of all, staff and patients haven't noticed any
difference - the lights are still on and the environment is