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The Malden Housing Authority will spend more than $11 million to make its public housing units more energy efficient, work officials believe will pay for itself.
Upgrades include new toilets, more efficient shower systems, and energy-efficient lighting at some of the 1,400 housing units managed by the authority.
But the most substantial project will be an overhaul of the main utilities system at the housing development on Newman Road, said Stephen G. Finn, the authority’s executive director.
The Housing Authority received the 20-year $11.27 million bond through MassDevelopment , an entity created by the Legislature in 1998 to act as a finance and development authority.