A planned solar farm at Palmer will now be twice as big as before.
SA Water has lodged an updated plan for the facility which will power its nearby water treatment plant and pump station, with an extra 34,500 solar panels over nearly 22 hectares.
The $14 million extension to the project will also put more space between the solar panels and a house on Reedy Creek Road.
A previous, smaller version of the solar farm had been approved by the SA Planning Commission earlier in the year.
Pending final approval of SA Water's plan, the solar panels will be installed in June and July and operational around August or September.
The entire facility will have a capacity of more than five megawatts.
The project is part of a statewide push by SA Water to reduce the cost and improve the reliability of its power supply by switching to solar, which should reduce the prices paid by its customers.