By Vicki Vaughan – Express-News

The roof of the Bexar County Adult Detention Center Annex isn’t pretty. Across its vast expanse are flocks of strutting pigeons, old air conditioning units and a solar hot-water system that hasn’t worked in years.

But changes on the roof — and the addition of the latest in solar-thermal technology — will beautify the county’s bottom line.

Over the next few weeks, the county will install a new solar hot-water system that will save as much as $60,000 a year and provide all the hot water the building needs, officials say.

The system is one of several green initiatives the county has launched or will begin. The projects include solar for parking garages that can power electric cars and a million-dollar rooftop installation.

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