Tim Bishop, national co-ordinator of the Sustainable Habitat Challenge at the Otago Polytechnic, on Sunday gave the first in a series of free public talks at the museum's restored and refurbished fitting shop.
About 10 people attended the talk, which focused on double-glazing, window insulation and capturing solar energy.
Mr Bishop showed fitting a thin plastic film over the inside of house windows was a low-cost alternative to double-glazing.
The talk series focuses on practical ways to save energy at home and in the workplace.
The energy centre's first main public event was a two-day "Warmth Expo", attended by 260 people at the museum in May.
Centre co-ordinator Lloyd Smith said development of the energy centre showed the Gasworks Museum was not only a historical resource, but also involved in a continuing community discussion about how to make practical energy savings, and keep energy costs down at home and at work.
The next talk at the museum is at 1pm on September 2.
