A dedicated volunteer since 1986 and one of the brightest lights in the city, Mr Greer sadly passed away on Tuesday, aged 87.

Without his dedication, the museum would not be the success it is today, Tamworth Regional Council art gallery and museums director Bridget Guthrie said.

"Ron's passion and commitment to the Tamworth Powerstation Museum will be recognised for years to come," she said.

"Ron will be deeply missed by the volunteers at the museum and all of the council staff who have had the pleasure of working with him.

"Our deepest sympathies are with Ron's family and friends during this time."

Mr Greer was the much-loved husband of June, Tamworth's first female mayor who passed away in 2007.

He was the respected father and father-in-law of Christine, Linda, Neil and Helen and Ian and Kath - and a loving grandfather to Stephanie, Jessica, Kaitlin, Natalie and Hayden.

Mr Greer always made himself available to his family, his daughter Linda Greer said.

"He was very clever and able to design and make just about everything with precision," she said.

"He was thoughtful, kind and selfless, a compassionate and brilliant friend to many.

"He was undemanding, he would always look at what he could give and contribute rather than looking for what could be received - he was just a beautiful, beautiful man."

Before his retirement 27 years ago, Mr Greer was the Peel-Cunningham County Council's chief electrical engineer.

His passion for electricity continued well into his retirement, where he became a driving force for the success of the Powerstation Museum.

His granddaughter Kaitlin Greer remembers he was so proud of her career in law he would send her newspaper clippings from The Australian every few weeks, to make sure she kept up with legal issues and news.

"He would often include his own handwritten notes," she said.

"He taught me to play the piano when I was younger, he and my grandma would take us to swimming lessons and play board games with us all the time while we were growing up.

"I was so lucky to have him as my grandfather."

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In 2015, he was awarded the Medal of the Order of Australia for significant services to the Tamworth community - a year later he won Tamworth's Volunteer of the Year award.

Mr Greer has been a member and organist for the Tamworth City Uniting Church for more than 50 years, a longstanding member of the church council and the church property committee.

Reverend Betty Stroud said Mr Greer would be deeply missed.

"He's been involved with the church for a long time, about 60 years," she said.

"He was a very faithful member with a deep faith, he lived that out by serving on various committees in the church, but most importantly in pastoral care - he cared for people quietly and never made a big noise about it.

"He continued that until last week where he would visit people at Nazareth House - he will be deeply missed as part of our church community."

He was also a member of the Tamworth Peel Combined Probus Club since 1994, where he volunteered as both president and treasurer.

Mr Greer's memorial service will be held on March 26.

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