The Capitol's maintenance workers installed the fixtures.
Shelton said the traditional bulbs lasted about two months. The LED fixtures should last about 10 years, meaning the state will recoup the cost of the fixtures in savings in about four years.
The Oklahoma Arts Council last year told the Capitol Preservation Commission of the harmful effects the heat-producing bulbs had on the portraits, which were painted by Charles Banks Wilson in the 1960s.
Shelton said traditional 150-watt bulbs were replaced earlier with 10-watt LED lights that illuminate some of the smaller portraits in the Capitol.
The traditional 115-watt bulbs that were in two tall lampposts on each side of the large portraits have been replaced with 18-watt compact fluorescent lightbulbs, which don't give off heat, Shelton said.
Heat-producing bulbs in the Betty Price Gallery on the Capitol's first floor were replaced last year with LED lights.
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It's a wonderful change. When you're dealing with artwork, you want to make it look proper.”
sustainability coordinator for the state