Going green to the Red Planet

November 29, 2017, European Space Agency
New Norcia at night. Credit: European Space Agency

ESA's ground station in Western Australia routinely communicates with spacecraft at far-away places like Mars. Now, it's using sunlight to generate electricity, significantly reducing energy costs.

Whether orbiting a planet, following a comet or peering deep into our Universe, have long used solar cells to generate from sunlight to power their mission.

Now, ESA's deep-space ground station at New Norcia, Western Australia, is also being powered in part by sunlight, thanks to a new solar power 'farm' completed in August.

The farm has 840 photovoltaic panels arranged in five double rows with a rated capacity of 250 kW. This is expected to generate 470 MWh of electricity annually, about 40 percent of the station's annual needs and equal to the electricity needed to power 134 typical households.

"While we've only just completed the first full month of operation, the solar facility has already reduced our cost of purchasing electricity from the local power company by at least 30 percent," says ESA's Marc Roubert.

"In the coming summer months, given some sunny, clear skies, we even expect to be able to deliver electricity back to the local grid."

The installation began in 2015 and is expected to provide a full return on investment within about 15 years.

"The approvals process with the local power authority was lengthy and demanding because of the size of the farm and the remoteness of the station, about 120 km north of Perth," says Udo Kugel, the project manager at ESA's mission control centre in Darmstadt, Germany.

"We expect to save 340 tonnes of carbon dioxide each year."

Communicating deep into space

Video recorded during a drone flyover of ESA's 35 m-diameter deep-space antenna at New Norcia, Western Australia, in October 2017. Credit: ESA/D. O'Donnell, CC BY-SA 3.0 IGO

Opened in 2003, New Norcia was the first of ESA's trio of deep-space antennas, which provide full communication coverage for spacecraft voyaging into our solar system.

The other stations are located in Argentina and Spain, and all three support ESA missions as well as missions of partner agencies such as NASA, China and the Japanese space agency.

ESA's antennas feature some of the world's best technology for deep-space communication. Dual 20 kW amplifiers must be cryogenically cooled, and can be pointed with extreme precision despite wind or dust to transmit commands to spacecraft – like Rosetta – 750 million km away.

In August 2016, New Norcia station received signals from the international Cassini spacecraft orbiting Saturn, across more than 1.4 billion km of space – the furthest 'catch' ever made by an ESA station.

More green

In future, ESA will consider upgrading the sites in Spain and Argentina with solar power as well.

"From now on, the power used by our to command spacecraft will come from the Sun, as will the used by the spacecraft to downlink the scientific data gathered from orbit," says Marc.

"Exploring our solar system is being done with sunlight at both ends."

Explore further: Sunrise through the solar arrays

Related Stories

Sunrise through the solar arrays

August 1, 2017

On July 26, 2017, a member of the Expedition 52 crew aboard the International Space Station took this photograph of one of the 16 sunrises they experience every day, as the orbiting laboratory travels around Earth. One of ...

Image: New Norcia deep-space ground tracking station

March 18, 2015

Twelve years ago this month, in March 2003, ESA inaugurated a new deep-space ground tracking station 8 km south of the town of New Norcia, which is about 150 km north of Perth, in Western Australia.

Four decades of tracking European spacecraft

May 19, 2015

Forty years ago this week, a satellite ground station in Spain became the first to be assigned to what would become ESA. Since then, the network – Estrack – has expanded worldwide and today employs cutting-edge technology ...

Recommended for you

Astronomers propose a new method for detecting black holes

October 22, 2018

A stellar mass black hole is a compact object with a mass greater than three solar masses. It is so dense and has such a powerful force of attraction that not even light can escape from it. They cannot be observed directly, ...

Gravitational waves could shed light on dark matter

October 22, 2018

The forthcoming Laser Interferometer Space Antenna (LISA) will be a huge instrument allowing astronomers to study phenomena including black holes colliding and gravitational waves moving through space-time. Researchers from ...

'Oumuamua one year later

October 22, 2018

One year ago this week astronomers discovered an unusual object moving through space not too far from the Earth's orbit. In just a few days they realized it could not be a normal asteroid or comet – its path showed that ...

0 comments

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.