Jaipur, Oct. 16 -- The Jaipur Development Authority (JDA) plans to install solar power plants with a combined capacity of 5 MW on six sewage treatment plants (STPs) along the Dravyavati river and the rooftops of two gardens, with the project expected to save around Rs.51 lakh a month in electricity costs, officials said. The project, to be implemented through Rajasthan Renewable Energy Corporation Limited (RRECL), is expected to generate an average of six lakh units of electricity every month. At an assumed electricity tariff of Rs.8.50 per unit, the estimated monthly savings would amount to Rs.51 lakh, said a senior official. The initiative aims to reduce JDA's dependence on conventional electricity and lower its power expenditure over the long term, he added....