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energy storage , as an option to compete with BESS , is severely constrained by its production cost if it is produced as green H2 using “ Surplus RE ”.
The round trip efficiency for hydrogen generation from electricity ( electrolysis ) and its reuse to generate electricity is only 30 per cent . Hence the many promotion efforts to consider H2 as an energy source for electricity generation are premature until the generation cost and production at the desired scale is economically viable .
Currently few countries produce such surplus RE and qualify as zero carbon or carbon negative countries , examples being Bhutan , Nepal and Norway . Also , current projections for green H2 to be competitive is not expected to materialise before 2030 .
Similarly , surplus RE for charging BESS infrastructure is also not a readily or consistently available resource at the scale needed . H2 and BESS are again competing for technology and resource options for long-term energy storage , especially when pumped hydro storage facilities are unavailable .
Nevertheless , as per the chart below , Mitsubishi Heavy Industries Group projections show that green H2 can play a prominent role in the decarbonisation of
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energy and industrial purposes .
Thus H2 can be an exciting option for global decarbonisation in the longer term . Hence the global communities need to do what is necessary to meet their COP 21 ( Paris Accord ) obligations to limit the global temperature rise to 1.5 ° C .
This appears to have resonated with most of the participating countries . Many
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have , or are , developing their own NZE Roadmaps and strategies . And Malaysia is again playing its part in this endeavour .
However , there is a caveat that we need to recognise : green H2 production for our domestic needs and / or for export is a long journey , and we need to be patient to realise our related economic aspirations . – @ Green
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Thus H2 can be an exciting option for global decarbonisation in the longer term . Hence the global communities need to do what is necessary to meet their COP 21 ( Paris Accord ) obligations to limit the global temperature rise to 1.5 ° C .” |
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