A Website Powered by the Sun

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The world wide web consumes a lot of energy to keep running as it is. The energy sources we use to power the net can make a big difference in the baron footprint of the entire web, which has led one website owner to see if they could run their website using only the sun. It turns out that a relatively small solar setup can do the job.

One catch is that the website had to do without some dynamic elements like a constantly updated database or calls to ad services and other trackers. Reducing your carbon footprint is yet another reason to use ad blockers AKA tracker blockers.

That said, both the network infrastructure and the end-use devices could be re-imagined along the lines of the solar powered website – downscaled and powered by renewable energy sources with limited energy storage. Parts of the network infrastructure could go off-line if the local weather is bad, and your e-mail may be temporarily stored in a rainstorm 3.000 km away. This type of network infrastructure actually exists in some countries, and those networks partly inspired this solar powered website. The end-use devices could have low energy use and long life expectancy.

Because the total energy use of the internet is usually measured to be roughly equally distributed over servers, network, and end-use devices (all including the manufacturing of the devices), we can make a rough estimate of the total energy use of this website throughout a re-imagined internet. For our original set-up with 95.2% uptime, this would be 87.6 kWh of primary energy, which corresponds to 9 litres of oil and 27 kg of CO2. The improvements we outlined earlier could bring these numbers further down, because in this calculation the whole internet is powered by oversized solar PV systems on balconies.

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Solar and Wind Outgrow Subsidies

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Renewable energy systems used to need subsidies to be competitive with the even more subsidized fossil fuel energy systems. Today, despite the fact that globally USD$5.2 trillion was spent on fossil fuel subsidies in one year, non-subsidized solar and wind are cheaper than fossil fuels. This is really impressive given the relatively small size of renewables being used over the last decade. With more solar and wind installations being built the economics of renewable energy is only getting better.

Perhaps nowhere is the push toward subsidy-free clean energy clearer than on arid expanses of Southern Europe. About 750 megawatts of subsidy-free clean-energy projects are expected to connect to the grid in 2019 alone, across Spain, Italy, Portugal and elsewhere — enough to power about 333,000 households, according to Pietro Radoia, an analyst at BNEF.

“The cheapest way of producing electricity in Spain is the sun,” Jose Dominguez Abascal, the nation’s secretary of state for energy, said last year.

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Solar Panels Help Crops Grow

Solar panels on grass
Solar energy is the future and it keeps getting better. Not only are renewables cheaper than destructive gas and coal energy they also have other positive effects. Recently it’s been discovered that solar fields can be used as a really good place to grow crops. This is counterintuitive as the solar panels block the sun which plants typically love and to service the panels there needs to be a pathway where crops would thrive.

However, by planting shade-tolerant plants beneath the panels it means workers can still do their job and the plants can do theirs. The plants do well in the shade thanks to the ambient light and the increased humidity from the panels themselves. Neat!

The researchers see potential here (and in similar “agrivoltaics” experiments elsewhere) that is worth investigating and optimizing. Solar panel installations may not be compatible with the machinery used to harvest many crops, and boosting the panels higher off the ground costs extra. But there are configurations for certain crops in certain areas that can make a lot of sense. Farmers could save water, make money from a solar lease, and might even find that workers are much more comfortable and safe working under some shade—all while allowing solar arrays to expand in those areas without competing for land with agriculture.

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The State of Energy in Africa

A panel at Collision Conference today looked at the state of the energy grid in Africa. The panellists are involved in bringing sustainable energy solutions to the continent in various ways.

The artist Akon has founded Akoin to help people better deal with currency complications throughout the continent. The profits from the company are then used to fund solar installations so the coin and the continent can run sustainably.

The AKoin Ecosystem unlocks the potential of the world’s largest emerging economy through the creation of a stable currency and innovative, revenue-generating opportunities that stimulate and support youth entrepreneurship, economic stability, and growth across Africa and the world.

Jesse Moore from M-Kopa has built a solar panel company that sells solar energy directly to consumers. They’ve brought electricity to over 750,000 houses and are open to skipping the electricity grid entirely. Customers can’t afford the full installation but they they can afford to pay for electricity as it’s needed without having to connect to a larger system.

The future of sustainable energy in Africa is looking bright!

Solar is Booming in Australia

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Solar in places with a lot of sun might seem like a no-brainer; yet in Australia it’s taken a long time for the idea to take off. This year is clearly going to be a turning a point for solar in the sunny nation based of the already exploding demand for solar installations. It’s great to see that solar has gotten so cheap that it’s being installed at such a high rate and that at least one nation has reached a tipping point around the culture acceptance of solar power.

“These solar farms can be built within a matter of weeks,” he said. “They’re really quick and simple.”

Together, the new large-scale projects could add between 2.5GW and 3.5GW to the national grid and rooftop installations could add another 1.3GW, according to the Smart Energy Council’s estimates. This would nearly double the nation’s solar energy capacity, currently 7GW, in a single year.

“The train tracks are about to converge,” Grimes said. “Rooftop installations and utilities are both booming and could turbo-boost the solar numbers overall.”

In Queensland, residential solar panels are already the state’s largest source of energy, producing more combined than the 1.7GW Gladstone power station. Just under a third (30%) of residential homes in the state have solar installed – the most in the country.

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