5 Things You May Have Missed About Elon Musk's Tesla Battery Announcement
“The sun shows up every day and produces ridiculous amounts of power.” —Elon Musk, May 1, 2015
Elon Musk produced fireworks last week when he announced that Tesla, his company known for its high-end electric cars, will soon start selling batteries to power homes and businesses. The products—which run about $3,500 for Powerwall home systems and about $25,000 for Power Pack business systems—will likely start shipping to customers later this year. The home system will store 10 kilowatt hours of electricity, enough to power a household for several hours.
— CBC-The Current (@TheCurrentCBC) April 30, 2015
Here are five important things you may not have seen about the Tesla announcement:
1. Consumers will save money on electricity.
According to Kimball Musk, Tesla board member and brother of Elon, the system could save consumers up to 25 percent on their electric bills. He explained that instead of paying premium electricity rates in the afternoon in a place like California, the battery will charge itself in the middle of the night when electricity is cheapest. "Electricity is only getting more expensive. So any way we can store it and become more self-reliant, that's ultimately a good thing," said Julien Gervreau, whose winery business has been piloting battery use for energy storage.
Thus, depending on electricity rates, the pay-back period could be only three to four years. In a place like Hawaii, where electricity rates are much higher than the national average, the pay-back will be even faster. Several states with net-metering laws will even allow solar consumers to sell the excess power stored in their Powerwall back to the utility.
2. It will hasten a widespread switch to renewable energy.
If utilities use these battery systems, as some have already announced they will do, it will allow them to better shift the load of electricity use throughout the day when the sun isn’t always shining and wind isn’t blowing -- thus giving utilities the ability to integrate more renewables into the grid. “Storage is a game changer,” Tom Kimbis of the Solar Industries Association told The Washington Post.
According to The Los Angeles Times, Tesla will get a boost from the California Public Utilities commission, which has ordered Edison, San Diego Gas & Electric and Pacific Gas and Electric to install or contract for more than 1,325 megawatts of electricity storage throughout the state by 2020, creating a huge market for batteries.
3. It will allow electric car and solar customers to drive on more sunshine.
Electric vehicles (EVs) are already lower in emissions than conventional vehicles, even taking into account the emissions from the electricity used to charge them and even in parts of the country with dirty grids. But to go the extra green mile, of the more than 300,000 people in the U.S. who drive plug-in EVs, a significant number of them have solar panels on their homes—upwards of 32 percent according to one California survey.
One program—a collaboration among Ford, SunPower and the Sierra Club—provides a discount on this combination of EVs and photovoltaics. However, the solar energy only powers these EVs some of the time, since the sun isn’t always shining. Tesla’s new battery system will allow consumers with any type of rooftop solar and any type of plug-in car (not just a Tesla model) to store their solar power and use it to power their cars more frequently, making it easier to truly drive on sunshine. This is why Slate Magazine posited that Tesla's new home-based battery "can truly liberate eco-minded drivers from fossil fuels."
4. It will mean battery prices will drop even faster.
Large batteries are key to electric cars and energy storage systems for homes, businesses and utilities, but cost has been a challenge. Sam Wilkinson, research manager for solar and energy storage at HIS Technology, told Wired that he anticipates a 50 percent battery cost drop in the next two to three years. Meanwhile, battery efficiency is growing at about eight percent annually.
A recent Washington Post article cited myriad reasons why "powering your home with batteries is going to get cheaper and cheaper"—among them the ongoing construction of Tesla's "gigafactory" in Nevada, expected to begin production in 2016 and reach full capacity by 2020, at which point it will produce more lithium batteries annually than were produced worldwide in 2013.
5. Companies are already raising their hands to buy and sell these battery systems.
Big companies such as Walmart and Cargill have already started to partner with Tesla to power their operations with the new PowerPack battery in conjunction with rooftop solar. Tesla batteries already power 11 Walmart stores, and the Jackson Family Wineries in Northern California started installing Tesla's battery storage systems last fall at all eight of its wineries. And just last week, Austin, Texas-based Treehouse home improvement store announced that it will be the first retailer to carry the new Tesla home battery.
Musk said he wants to make batteries a core part of Tesla's business, with the ultimate goal of transforming the world's electric system. He emphasized that as with its electric car systems, Tesla will have an "open patent" policy—meaning that other companies wishing to join the battery revolution don't have to start from scratch. He said at the Powerwall unveiling, "We are hopeful that many others will follow our path and if somebody is able to make a better battery solution than us, I'd be the first to congratulate them."
Gina Coplon-Newfield is the director of the Electric Vehicles Initiative for the Sierra Club.
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Since even moderate-intensity workouts offer a slew of benefits, walking is a good choice for people looking to stay healthy.
How to Rock Your Walk<p>Walking isn't just fun and healthy. It's accessible.</p><p>"Walking is cheap," says Dr. John Paul H. Rue, a sports medicine doctor at <a href="https://mdmercy.com/" target="_blank">Mercy Medical Center in Baltimore</a>. "You can do it anywhere at any time; [it] requires little to no special equipment and has many of the same cardio benefits as running or other more intense workouts."</p><p>Want to up your walking game? Try the tips below.</p>
Use Hand Weights<p>Cardio and strength training can go hand-in-hand when you add weights to your walk.</p><p>A <a href="https://journals.lww.com/acsm-msse/Fulltext/2019/03000/Associations_of_Resistance_Exercise_with.14.aspx" target="_blank">2019 study</a> found that weight training is good for your heart, and <a href="https://www.mayoclinicproceedings.org/article/S0025-6196(17)30167-2/abstract" target="_blank">research</a> shows it reduces the risk of developing a <a href="https://www.healthline.com/health/nutrition-metabolism-disorders" target="_blank">metabolic disorder</a> by 17 percent. People with metabolic disorders have a higher chance of being diagnosed with high cholesterol, high blood pressure, and diabetes.</p><p>Rue suggests not carrying weights for your entire walk.</p><p>"Hand weights can give you an added level of energy burning, but you have to be careful with these because carrying [them] over a long period of time or while walking could actually lead to some overuse injuries," he says.</p>
Make It a Circuit<p>As another option, consider doing a circuit. First, put a pair of dumbbells on your lawn or somewhere in your home. Walk around the block once, then stop and do some bicep curls and tricep lifts before walking around the block again.</p><p>Rue recommends <a href="https://www.healthline.com/health/exercise-fitness/running-with-weights" target="_blank">avoiding ankle weights</a> during cardio workouts, as they force you to use your quadriceps rather than hamstrings. They can also cause muscle imbalance, according to the <a href="https://www.health.harvard.edu/staying-healthy/wearable-weights-how-they-can-help-or-hurt" target="_blank">Harvard Health Letter</a>.</p>
Find a Fitness Trail<p>Strength training isn't limited to weights. You can get stronger by <a href="https://www.healthline.com/health/bodyweight-workout" target="_blank">simply using your body</a>.</p><p>Often found at parks, fitness trails are obstacle courses with equipment for pullups, pushups, rowing, and stretches to build upper and lower body strength.</p><p>Try searching "fitness trails near me" online, checking out your local parks and recreation website, or calling the municipal office to <a href="https://calisthenics-parks.com/" target="_blank">find one</a>.</p>
Recruit a Friend<p>People who workout together stay healthy together.</p><p><a href="https://bmcgeriatr.biomedcentral.com/articles/10.1186/s12877-017-0584-3" target="_blank">One study</a> showed that older adults who exercised with a group improved or maintained their functional health and enjoyed their lives more.</p><p>Enlist the help of a walking buddy with a regimen you aspire to have. If you don't know anyone in your area, apps like <a href="https://www.strava.com/" target="_blank">Strava</a> have social networking features so you can get support from fellow exercisers.</p>
Try Meditation<p>According to the <a href="https://www.nccih.nih.gov/research/statistics/nhis/2017" target="_blank">2017 National Health Interview Survey</a>, published by the National Institutes of Health, meditation is on the rise, and for good reason.</p><p>Researchers <a href="https://pubmed.ncbi.nlm.nih.gov/29616846/" target="_blank">found</a> that mind-body relaxation practices can regulate inflammation, <a href="https://www.healthline.com/health/biological-rhythms" target="_blank">circadian rhythms</a>, and <a href="https://www.healthline.com/health/glucose" target="_blank">glucose</a> metabolism, as well as lower <a href="https://www.healthline.com/health/high-blood-pressure-hypertension" target="_blank">blood pressure</a>.</p><p>"Any form of exercise can be turned into a meditation of some type, either by the surroundings you are walking in, like a park or trail, or by blocking out the outside world with music on your headphones," Rue says.</p><p>You can also play a podcast or download an app like <a href="https://www.headspace.com/headspace-meditation-app" target="_blank">Headspace</a> that has a library of guided meditations to practice while you walk.</p>
Do Fartlek Walks<p>Typically used in running, fartlek intervals alternate periods of increased and decreased speed. These are <a href="https://www.healthline.com/nutrition/benefits-of-hiit" target="_blank">high-intensity interval training (HIIT)</a> workouts, which allow exercisers to accomplish more in less time.</p><p><a href="https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0154075" target="_blank">One study</a> showed that 10-minute interval training improved <a href="https://www.healthline.com/health/metabolic-syndrome" target="_blank">cardiometabolic</a> health, or lowered the risk of heart disease, stroke, and diabetes, just as well as working out at a continuous pace for 50 minutes.</p><p><a href="https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0111489" target="_blank">Research</a> also shows that HIIT workouts increase muscle <a href="https://www.healthline.com/health/fast-twitch-muscles" target="_blank">oxidative</a> capacity, or the ability to use oxygen. To do a fartlek walk, try walking at an increased pace for 3 minutes, slow down for 2 minutes, and repeat.</p>
Gradually Increase Pace<p>A faster walking pace is associated with a lower risk of <a href="https://www.healthline.com/health/copd" target="_blank">chronic obstructive pulmonary disease (COPD)</a> and respiratory diseases, according to a <a href="https://pubmed.ncbi.nlm.nih.gov/30303933/" target="_blank">2019 study</a>.</p><p>Still, it's best not to go from a stroll to an Olympic-worthy power walk in a day. Instead, increase your pace gradually to prevent injury.</p><p>"Start by walking at a brisk pace for about 10 minutes per day, 3 to 5 days per week," Rue says. "Once you've done this for a few weeks, increase your time by 5 to 10 minutes per day until you get to 30 minutes."</p>
Add Stairs<p>You've likely heard that taking the stairs instead of an elevator is a way to add more movement into your daily routine. It's also a way to step up your walking. Stair climbing has been shown to <a href="https://www.sciencedirect.com/science/article/pii/S2211335519301123?via%3Dihub" target="_blank">decrease the risk of mortality</a> and can easily add a bit more challenge to your walk.</p><p>If you don't have stairs in your home, you can often find them outside a local municipal building, train station, or at a high school stadium.</p>
Is Your Walk a True Cardio Workout?<p>Not all walks are equal. A walk that's too leisurely may not provide enough burn to qualify as cardio. To see if you're getting a good workout, try to <a href="https://www.healthline.com/health/how-to-check-heart-rate" target="_blank">measure your heart rate</a> using a monitor.</p><p>"A target goal for a good walking workout heart rate is about 50 to 70 percent of your maximum heart rate," Rue says, adding that maximum heart rate is <a href="https://www.healthline.com/health/fitness-exercise/fat-burning-heart-rate" target="_blank">typically calculated</a> by 220 beats per minute minus your age.</p><p>You can also monitor how easily you can carry on a conversation while you walk to gauge your heart rate.</p><p>"If you can walk and carry on a normal conversation, that's probably a lower intensity walk," says Rue. "If you are slightly breathless but can still have a conversation, that's probably a moderate workout. If you are out of breath and can't talk normally, that's a vigorous workout."</p>
Takeaway<p>By shaking up your routine, you can add excitement to your workout and reap even more rewards than a basic walk provides. Increasing the pace and intensity of a workout will make it more effective.</p><p>Simply pick your favorite variation to add some spice to your next walk.</p>
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