Soil Profile. There are different types of soil, each with its own set of characteristics. Dig down deep into any soil, and youâll see that it is made of layers, or horizons (O, A, E, B, C, R). Put the horizons together, and they form a soil profile. Like a biography, each profile tells a story about the life of a soil. Most soils have three major horizons (A, B, C) and some have an organic horizon (O).
At a pilot facility in Singapore, Siemens has cut the energy needed to desalinate seawater by more than 50 percent. The plant processes 50 cubic meters of water per day, consuming only 1.5 kilowatt-hours of electricity per cubic meter.
Key facts: Overview. The two pressurized water reactors at the Prairie Island facility generate about 20 percent of the electricity used by Xcel Energyâs customers in the Upper Midwest. The plant is about 40 miles southeast of Minneapolis-St. Paul and about five miles north of Red Wing, MN. Each reactor can generate about 550 megawatts of electricity, for total plant output of about 1,100 megawatts, enough to power about 1 million homes.