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2. Grid-tied electrical system - Wikipedia

   en.wikipedia.org/wiki/Grid-tied_electrical_system

   A grid-tied electrical system, also called tied to grid or grid tie system, is a semi-autonomous electrical generation or grid energy storage system which links to the mains to feed excess capacity back to the local mains electrical grid. When insufficient electricity is available, electricity drawn from the mains grid can make up the shortfall ...

3. Grid-tie inverter - Wikipedia

   en.wikipedia.org/wiki/Grid-tie_inverter

   Grid-tie inverters are designed to disconnect quickly from the grid if the utility grid goes down. In the United States, there is an NEC requirement [2] that in the event of a blackout, the grid tie inverter shut down to prevent the electricity it generates from harming persons repairing the power grid. Properly configured, a grid tie inverter ...

4. Inverter-based resource - Wikipedia

   en.wikipedia.org/wiki/Inverter-based_resource

   An inverter-based resource (IBR) is a source of electricity that is asynchronously connected to the electrical grid via an electronic power converter ("inverter"). The devices in this category, also known as converter interfaced generation ( CIG ), include the variable renewable energy generators (wind, solar) and battery storage power stations ...

5. Feed-in tariff - Wikipedia

   en.wikipedia.org/wiki/Feed-in_tariff

   NERSA said in its release that the tariffs were based on the cost of generation plus a reasonable profit. The tariffs for wind energy and concentrating solar power were among the most attractive worldwide. The tariff for wind energy, 1.25 ZAR/kWh (€0.104/kWh) was greater than that offered in Germany and more than proposed in Ontario, Canada.

6. Short circuit ratio (electrical grid) - Wikipedia

   en.wikipedia.org/wiki/Short_circuit_ratio...

   A point on a grid having a number of machines with an SCR above a number between 1 and 1.5 has less vulnerability to voltage instability. Hence, such a grid is known strong grid or power system. A power system (grid) having a lower SCR has more vulnerability to grid voltage instability.

7. Wind turbine design - Wikipedia

   en.wikipedia.org/wiki/Wind_turbine_design

   An example of a wind turbine, this 3 bladed turbine is the classic design of modern wind turbines Wind turbine components : 1-Foundation, 2-Connection to the electric grid, 3-Tower, 4-Access ladder, 5-Wind orientation control (Yaw control), 6-Nacelle, 7-Generator, 8-Anemometer, 9-Electric or Mechanical Brake, 10-Gearbox, 11-Rotor blade, 12-Blade pitch control, 13-Rotor hub

8. Curtailment (electricity) - Wikipedia

   en.wikipedia.org/wiki/Curtailment_(electricity)

   Curtailment of wind power in western China was around 20% in 2018. [12] In 2018, curtailment in the California grid was 460 GWh, or 0.2% of generation. [13] Curtailment has since increased [7] [14] to 150-300 GWh/month in spring of 2020 and 2021, [15] [16] mainly solar power at noon as part of the duck curve. [17]

9. Small wind turbine - Wikipedia

   en.wikipedia.org/wiki/Small_wind_turbine

   Turbine blades for small-scale wind turbines are typically 1.5 to 3.5 metres (4 ft 11 in – 11 ft 6 in) in diameter and produce 0.5-10 kW at their optimal wind speed. [1]