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How to zero emissions?

Rafael Herzberg's picture
Consultant energy affairs Self employed

Rafael Herzberg- is an independent energy consultant, self-employed (since 2018) based in São Paulo, Brazil* Focus on C level, VPs and upper managers associated to energy related info, analysis...

  • Member since 2003
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  • Sep 10, 2021

How to zero emissions?

The most common answer has been: you find out the amount of energy you consume each month. This volume of renewable sources is then contracted and that's it!

But... a solar photovoltaic system, for example, with 1 kW of nominal capacity produces, in order of magnitude, 110 kWh/month (it depends on its location, of course).

A customer needs typically between 3 to 7 times this amount on a monthly basis, depending on the associated usage profile. I mean, at times when there is no sunshine, you have to have other sources.

This signals that what is at stake is the "whole". Emissions should then be accounted for considering the "matrix" that is necessarily involved.

But... dispatching plants requires extra care, as they were not designed for major load variations..

The "duck curve" is one of these problems that have been discovered in countries where solar energy already has a relevant penetration. The result has been the regulatory requirement to install batteries to mitigate the rapid transition (to the public grid) in the late afternoon.

This solution requires much larger investments than just the photovoltaic system.

Zeroing emissions is possible and necessary. But it is a must finding out - and carefully - how to face this challenge.


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