本文中，grid的意思是“输电网”，即指的是供电公司的电。对于安装了太阳能发电系统的住户来说。off the grid也就是完全不用供电公司的电。因此正确答案为C。
In today's world, "off the grid" living has become an increasingly popular choice for those seeking independence, sustainability, and a closer connection to nature. But what exactly does it mean to live off the grid? In this blog post, we will explore the concept of off-grid living, its...
The term “off the grid” describes a structure which is not connected to the electrical grid or other public utilities. People most commonly use this term to describe an autonomous house, a house which is capable of functioning all on its own, although technically buildings and other structures...
AC electricity is used by the power grid, for example in household outlets. However, most standard electronic devices convert it into DC current with their internal circuitry. Why, then, does the power grid use AC current? The reason has to do with transmission. Resistance in power lines ca...
33. What does the underlined word “undermine” in paragraph 3 mean? A. Strengthen. B. Determine. C. Oppose. D. Justify. 34. How can negative expectations probably affect people’s performance in reality? A. By re...
Our helicopters play a crucial part in carrying out inspections and repair work on overhead power lines in both the US and UK. Find out how they are making it safer, faster and more cost-effective for us to keep the electricity network maintained and ope
grid applications, providing power when the renewable energy source is not actively generating electricity. If you don't plan to use batteries, you may want to consider alternative solutions, such as grid-tied inverters for net metering or hybrid inverters that can operate in grid-tied and off-...
This could result in you losing out on a few minutes of a lower electricity rate, but it’s necessary to protect the energy grid and keep EVs charging reliably. *This could be increased by up to 30 minutes by energy companies, although we’re yet to see any indication of any intent to...
In theory, voltage and current have a perfect 50 Hz sine wave in Europe (and 60 Hz mostly in North and South America). This is the case if there are only pure ohmic linear loads connected to the grid (e.g. incandescent light bulbs, electrical heaters, AC electromotors, etc.). The...
During the 5pm hour, consumption is met by solar the grid (dark red), even though the battery is completely charged to 100%. That’s because the electricity rate in this market is cheaper at 5pm than at 6pm. Then, between the hours of 6pm and 9pm — when rates are the highest — ...