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Fortress Power eVault 18.5 installation. Courtesy photos. Chris Sparadeo In the past, flooded lead-acid (FLA) batteries have been the first choice for those living off-grid. Although they have historically been the backbone of remote electrification, these batteries come with tradeoffs. Off-gassing, equalization charge, hydrometer readings are concepts that off-grid homeowners have come to grudgingly […] Cryogenic energy storage system. Image: Highview Power. George Harvey Two energy companies announced that they will co-develop a highly unusual energy-storage project in Vermont. It will be the first commercial cryogenic energy-storage system in the United States. It will use air that has been cooled to the point of being […] Comparing Total Cost of Ownership Craig Quentin, Applications Engineer, RELiON Battery Compared to lead-acid batteries, lithium iron phosphate (LiFePO4) batteries offer users practical advantages such as lighter weight and hands-off operation. These batteries also have longer lifetimes which makes for far less frequent battery replacements and service calls. But many first-time buyers of LiFePO4 batteries […] The lead-acid battery bank consisted of 24-2V batteries. All photos: N.R. Mallery N.R. Mallery As Bob Dylan wrote, “The times they are a changin’…”. The change is now. Battery storage, on or off the grid today has produced a real game-changer. And my off-the-grid experience proves it. In the beginning, I […] George Harvey Green Mountain Power (GMP), which provides electric utility services for roughly three-quarters of the people of Vermont, has reported significant savings from the growth of net-metered solar power and installations of Tesla Powerwall batteries, which it subsidized. In fact, during a heatwave in August it saved $600,000 because of the combination […] Green Mountain Power is offering Tesla Powerwall 2.0 batteries to 100 eligible customers, free of charge. A $150,000 grant from the Vermont Low Income Trust for Electricity (VLITE) will pay for the cutting-edge technology and installation in the homes of low income customers with significant need for backup power reliability due to health and […] This recent sonnen battery installation in New Hampshire is an ECO-12. It provides continuous 8,000 watt output along with 12kWh of standby capacity. It can be charged by the home’s 7.8 kilowatt AC solar array, the grid, or a back-up generator. Photo courtesy of Granite State Solar. By George Harvey In a […] By Danielle Ferguson Lithium iron phosphate (LiFePO4) batteries have many characteristics that make them superior to other battery technologies. They are lightweight and versatile. They have a long lifespan and a fast recharge rate. They can also withstand cold, heat, collision, and mishandling during charging and discharging without risk of combustion. But […] Batteries are starting to wreck the hopes of fossil fuels By George Harvey The Hornsdale Power Reserve (HPR) is a big battery in South Australia. At any given instant, it can provide 100 megawatts (MW) of power. It can keep up a discharge of 70 MW for about ten minutes, and 30 MW […] By George Harvey Watching the progress of a no-hitter in baseball has an unusual aspect to it. The exciting thing is that nothing new happens. The moment the game changes, the excitement ends. That is how it has been with the prices of electricity from renewable power. The costs of solar and […] |
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