People who know very little about renewable and sustainable energy continue to buzz like flies in the popular media. They don’t believe wind power economics can work. They don’t believe solar power can provide a genuine contribution to grid capacity. They don’t think marine power can achieve. They would rather have nuclear power. They would rather have environmentally-destructive new oil and gas drilling. They have friends and influence in Government. They have financial clout that enables them to keep disseminating their inaccuracies.
It’s time to ditch the pundits, innuendo artists and insinuators and consult the engineers.
Renewable Gas can stand in the gap – when the wind doesn’t blow or the sun doesn’t shine and the grid is not sufficiently widespread and interconnected enough to be able to call on other wind or solar elsewhere.
Renewable Gas is the storing of biologically-derived and renewably-created gases, and the improving of the gases, so that they can be used on-demand in a number of applications.
This field of chemical engineering is so old, yet so new, it doesn’t have a fixed language yet.
However, the basic chemistry, apart from dealing with contaminants, is very straight-forward.
When demand for grid electricity is low, renewable electricity can be used to make renewable hydrogen, from water via electrolysis, and in other ways. Underused grid capacity can also be used to methanate carbon-rich biologically-derived gas feedstocks – raising its stored energy.
Then when demand for grid electricity is high, renewable gas can be used to generate power, to fill the gap. And the flue gases from this combustion can be fed back into the gas storage.
Renewable gas can also be biorefined into vehicle fuels and other useful chemicals. This application is likely to be the most important in the short term.
In the medium-term, the power generation balance that renewable gas can offer is likely to be the most important application.
Researchers are working on optimising all aspects of renewable gas and biorefinery, and businesses are already starting to push towards production.
We can have a fully renewable energy future, and we will.