The South Australian Government has promised to increase concessions for up to 250,000 South Australians, including seniors and low-income earners the ABC has reported.

From July, energy concessions will rise from a maximum of $120 per year to $150.

Premier Mike Rann says a range of concessions will be increased this year and followed by annual 5 per cent rises for the next three years.

He says the extension of concessions to low-income earners will benefit another 20,000 people.

Ross Womersley of the SA Council of Social Service is pleased with the rise but says concessions are struggling to keep pace with the rapid increases in some energy bills.

Seniors Voice chief executive Ian Yates says water is still too expensive for pensioners.

"Water is a significant problem because it's going to at least double in price, you know, government pricing decisions around desalination and other initiatives," he said.

"We understand that they have to be financed but people on a fixed income have very limited means and these are essential services."