With savings projected to reach $30,000 by year's end, principal Sharon Oldfield says 'the majority' of this money will be put back into science projects at the school.

"We're now looking to re-invest that money into our Science, Technology, Engineering, Arts and Mathematics (STEAM) program," she said.

"Just having the solar panels is already allowing us to raise the kids' awareness about environmental issues.

"With this milestone today for instance, we can now go to assemble and show that those energy savings represent 5000 trees saved.

"To demonstrate the benefits in a visual way is what really allows us to life their awareness.

"But we would like to extend that impact by investing in science projects.

"For instance we're looking at purchasing some model solar cars, which the students will then be supported in changing and upgrading," Principal Oldfield said.

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The solar panels arrived as part of the NT government's $5 million Rooftop Solar in Schools Program, with Katherine High in the first group of the program's roll-out.

The NT Government has set a target of 50% renewables in the sun-drenched NT by 2030.

Climate is a big concern for Year Twelve students Jaimie Bryant and Silvana Goldbach-Eggert.

They said it was gratifying to see their school environment evolve to confront the issue of climate change but there's plenty more work to be done.

"We had a climate strike last year and sometimes the environment is all I can talk about to be honest," Silvana said.

"I think the students sort of get it, I'm excited to see what impact assembly today has but more work needs to be done," she said.

"As an example, we did some work totalling the paper wastage for our school, and kids did understand once we showed how much it all cost," Jaimie said.

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