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ELECTRICITY GRIDS FOR RENEWABLES

National grids need international backups

ELECTRICITY GRIDS FOR RENEWABLES
Overviews
Key Lectures

FLOOR GUIDE &
PRIMERS
Renewables picLinks

Renewables
Grids
Solar
Storage
Wind

FOSSIL FUEL
PRIMERS

Coal & Global Warming

Introducing Electricity Power Grids


CONTINENTAL GRIDS

The US Grid systems are discussed in great detail in the NREL reports. The essentials are that renewable energy sources, being dependent on local weather systems, must be linked and controlled on a continental scale. The continental grid and the connections to large wind, solar and hydro power plants must handle Gigawatts of power. This high capacity level is only required about 10% of the time at any point in the grid. Much smaller, local grids would be adequate for a largely nuclear powered system.

INVASIVE USER CONTROL
Continent sized renewable systems will still fail to meet total demand about 5-10% of the time. It is therefore necessary to shut down selected large users and some appliances run by millions of homeowners. This is called Smart Grid technology.

There is some merit in this level of control because most users simply refuse to control their power consumption, insulate their homes, or cut non-essential travel. All models of future energy supply include a 25-30% cut in average consumption if most of the world is to benefit from new power systems. The downside of this enforcement system and its costs is in civil unrest and lost elections. The up side is a bonanza for makers of smart grid controls.

GRID TECHNOLOGIES
These will be detailed in the Grid Library. The Economics and Politics of the deployment of Renewables Grids falls into the respective Avenues.


Man at work
Ivanov