Capacity first?

…then Reliability, then Efficiency?

Developing an electrical network is a question of priorities. As is developing anything I guess… Which priorities do you think are most important?

You probably agree that the first step in building an electrical system is bringing access to electricity to most of the population, right?

Capacity to efficiency

This might seem solved, but in reality, access to electricity is still far from being universal. Still 1,2 billion people don’t have access to electricity. It’s in fact part of sustainable development goal 7, and, actually, the road to SDG7 is the road to Energythaca.

While building additional lines and power generation units to solve access to electricity, the values of reliability and efficiency are normally not on the top of mind for system planning. What if access to electricity is provided by renewable microgrids, would values like reliability and energy efficiency be achieved at the same time? Sigue leyendo

Electric boats and sea energy harvesting

As commented in a recent post on renewable islands, to completely decarbonize islands, it is necessary to use renewables for electricity and heating, together with the electrification of transport. (Actually, electric mobility serves as renewable storage)

By transport I mean electric mobility on land, that is vehicles, rail, buses, but also on the sea. How can we decarbonize sea transport?

No, I’m not proposing getting our hands on the oars or going back to:

Por MKFI (Trabajo propio) [Public domain], undefined

Let’s see how…

Sigue leyendo

MegaPV Plants, Power ¿and crops?

One of the concerns of utility scale solar plants is the land use. While wind power plants only employ aprox. 1% of the agricultural land where they are installed, a solar photovoltaic power plant normally hinders other uses for almost 100% of the power plant’s surface.

Exceptions can be found, of course, as with 2-axis single post trackers, that can be designed to allow cattle land use, as a reference with CPV in California for cows. The use of sheep under a solar field, is also a solution for maintaining the land under the panels, as in Puerto Errado, Spain (picture from Novatec Solar)

Ganaderia en CSP

Actually,the higher the structure the bigger the cost, so it has to compensate with the land usage increase. Other solutions for crop farming (not cattle) would be, for example, moveable solar plants that cover only fallow land with wheeled structures.

But what, as far as I know, has not been developped enough, is Sigue leyendo