Wind Power is Now Cheaper than Gas

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Renewable energy just kept getting cheaper and cheaper despite ongoing subsides for the oil and gas industries. This is really good to see as people who only care about short term economic energy decisions will have to start to advocate for renewable energy. The decrease in cost for renewable wind power can be attributed to bigger blades and better energy grid management. This means that not only is wind power cheaper, the better grid management can lead to other renewable sources getting cheaper too.

In the US, the prices for wind power had risen up until 2009, when power purchase agreements for wind-generated electricity peaked at about $70 per MegaWatt-hour. Since then, there’s been a very steady decline, and 2018 saw the national average fall below $20/MW-hr for the first time. Again, there’s regional variation with the Great Plains seeing the lowest prices, in some cases reaching the mid-teens.

That puts wind in an incredibly competitive position. The report uses an estimate of future natural gas prices that show an extremely gradual rise of about $10/MW-hr out to 2050. But natural gas—on its own, without considering the cost of a plant to burn it for electricity—is already over $20/MW-hr. That means wind sited in the center of the US is already cheaper than fueling a natural gas plant, and wind sited elsewhere is roughly equal.

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It’s OK to Not Wash Your Clothes

Want to save the planet? Reduce how often you wash your clothes, you don’t need to wash your shirt that you wore for only one day. This is something you can start doing today to help make a better tomorrow.

When it comes to your wardrobe overall you can alter what clothes you buy to ensure that you barely need to do laundry at all. There are new companies and clothing lines that focus on making clothes which are designed to survive multiple wears without getting dirty. I think it would be great to never have to launder anything again!

Decades of marketing from the cleaning industry has conditioned many people to throw their clothes in the laundry after one day’s wear, even though this is rarely necessary. So one of the biggest challenges for brands pitching clothes that don’t need to be washed frequently is to convince people that they will not be gross, smelly, or dirty if they aren’t constantly doing loads of laundry.

Bishop, for his part, decided to create wool blends with other materials, including nylon and linen to achieve different effects. Synthetic fibers, for instance, are able to make clothes more durable because they are hardier. This was a difficult decision, because while wool and other natural fibers are biodegradable, nylon, polyester, and other synthetics are plastic-based so they will not decompose, but sit in landfills forever. “We had some difficult decisions to make when it came to sustainability,” Bishop says. “But we decided that our goal as a brand was to make it easier for people to own fewer clothes, and keep them for longer. So we decided to incorporate synthetics.”

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Digital Circuit Breakers can Transform Sustainable Electricity

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An often overlooked aspect of sustainable energy is the seemingly simple switching of electricity. Physical switches slow down the ability of repairs on power systems and can even hinder the installation of renewable energy sources. A lot of renewable energy systems (solar, wind, tidal, etc.) fluctuate greatly in the power output which strains switches; this is where digital circuits thrive. With digital switching it is easier to dynamically change power sources and remotely monitor them.

“Instead of using mechanics to switch the power, we apply digital inputs,” Kennedy told Popular Mechanics. “Now I have no moving parts. Now I have the ability to connect things like iPhones and iPads for remote power management, which increases safety and improves efficiency. I can set the distribution panel to a schedule so the flow of power is seamless, unlimited, and shifts between sources automatically. You literally wouldn’t notice. The lights wouldn’t even flicker.”

For a grid-connected solar home, for example, residents sometimes have to disconnect their solar input because traditional power systems (including the circuit breakers) aren’t advanced enough to properly manage multiple power sources that change.

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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!

We can Stop Climate Change Just by Ending Fossil Fuel Usage

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It seems that every month we’re confronted with another study pointing out that climate change is happening faster and worse than projected. This constant news cycle can make people tone it out and ignore the defining issue of our day. Thankfully, we also get tons of suggestions to stop climate change. Today I share with you the simplest way to stop climate change: end fossil fuel use. We have the technology and we have the knowledge. All we need to do to avert a global catastrophe is stop burning dead dinosaur juice.

The study, published in the journal Nature Communications, used computer models to estimate by how much global temperatures would rise if a fossil fuel infrastructure phaseout began immediately. The lifespan for power plants was set at 40 years, cars an average of 15 years and planes 26 years. The work also assumes a rapid end to beef and dairy consumption, which is responsible for significant global emissions.

In this scenario, the models suggest carbon emissions would decline to zero over the next four decades and there would be a 66% chance of the global temperature rise remaining below 1.5C. If the phaseout does not begin until 2030, the chance is 33%.

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