Tag Archives: sustainability

Biofuels vs E-fuels

I wrote about the conversation I had around biofuels and e-fuels that are produced through power-to-fuel approaches. They have rather different chemical pathways, costs and constraints. I’d really like to see someone consider the resource intensity of these different approaches. The challenge for most studies is that they consider biofuels from a standpoint of resource potential as though the agriculture activities are inert. Of course there’s the whole question of whether land should be used for cultivation of food or energy. I won’t get into that.

But I’d be curious to see if people who can organise the supply chain across the land, the supply of food alongside the supply of feedstock towards the bioenergy plants had done their analysis on resource intensity. A good comparison of the resource intensity from the water-intensity, output logistics standpoint would be really good. It doesn’t have to be a full-fledged lifecycle assessment – back of envelope calculation would be helpful.

There is a view that bioresources are limited by the amount of feedstocks available. There is only this much used cooking oils (UCO) that you can convert to hydrotreated vegetable oils (HVOs) or into biojet fuel (typically via the Hydrotreated Esters and Fatty Acids (HEFA) pathway). And that power-to-liquid is theoretically not limited in terms of resource potential. That is not exactly true because we are still limited in our green options for power generation and green power itself can eat into resources required by other sectors. The conversion process to fuel also requires carbon dioxide feedstock of suitable concentration as well as pure water to be electrolysed to produce hydrogen.

It’s strange to think that we can have unlimited power or that we can easily power the world – remember those times when people actually calculated the amount of solar panels and space on land that is needed to power all the earth? The investment to be made in terms of building lines to distribute power, and the factories to take that power and convert them into the fuel needed would multiply the complexity problem of supplying the world’s energy needs.

Sunsetting infrastructure

At some point in my career I got involved with projects with utilities in Australia. First with electricity distribution networks, then with gas utilities as well. They are all energy networks or utilities because my role as an energy transition consultant is to help players in the economy to navigate the challenges and struggles around our transforming energy landscape. They are struggles that the players and our economy must go through in order to emerge more resilient and climate-relevant.

Electricity networks are seen as important for the energy transition – the drive to decarbonise the energy system – so much so that The Economist ran a cover in April this year that shows a man hugging a transmission tower and the cover text reads “Hug Pylons Not Trees“.

Gas networks and pipelines are on the other end of the spectrum. There’s a lot of concerns around what is going to happen and the expectations of a death spiral. Activists campaigning against the gas networks can sometimes claim that they should be written off completely while contradicting themselves that the assets should not be allowed to depreciate quickly given they still have some operating life or runway. There is a role for gas networks to actually consider the challenging question of getting renewable gas into their network and the struggle has to do perhaps with the question of which gas. Would it be hydrogen, or biomethane, or what? And on the other hand, will they need to transport carbon dioxide? Perhaps captured ones from the industry? What role can the pipelines or network play?

If we keep thinking about molecules and figuring out which molecules, we’ll be somewhat stuck. The trick it seems, is to consider potentially taking the lead. It is still fascinating that Jemena actually took the lead to initiate the Malabar biomethane injection project and saw through it to the recent operation with the first biomethane injection into a distribution network in Australia. Biomethane in most cases is the straight-forward solution – one that is tricky to pull off but can be handled just from supply-side as the end-use equipment will not have to switch from the ones that already use natural gas. Therefore, it is the logical choice for gas networks to start taking the lead on. Perhaps in the next two to three years, it would soon be a no-brainer. But for now, we do what we can to further accelerate the transition.

Whose responsibility?

So Singapore’s target for net-zero is 2050, with the public sector aiming to reach the target in 2045. And with coordination being touted as one of the core strengths of the Singapore government, we have a Chief sustainability within the government to manage that. This role in businesses is still very ambiguous and it is not clear whether the person is managing the process of decarbonisation for the the company or to manage the sustainability offering of the firm.

Likewise, it is not entirely clear whether the Chief sustainability in the government of a country should be responsible only for the public sector emissions or taking charge of the reduction of emissions across the entire country. Frankly, the public sector emissions are already very significant. Part of the challenge is that almost all of the wastewater treatment and water supply plants are owned and operated by the government; at the same time, the government also own and operate incineration plants. This is probably why in the business times article, it was stated that Ministry of Sustainability & Environment is itself one of the large emitter.

But Singapore’s approach to decarbonisation is unlikely to be about the government just dealing with its own emissions and then trying to create structures to drive decarbonisation of the private sector. The fact that the Chief sustainability starts talking about costs, value and trade-offs is already a clear sign that the government is probably thinking about abatement cost at a system level. And it is true that the government in Singapore is uniquely positioned to evaluate this. We might have a shot at being able to collectively determine what are the lowest hanging fruit across the society to reduce emissions and then collective work through the curve of diminishing marginal returns. In other words, we can look at the avenues of abatement that incur the lowest costs while making the largest reductions first.

This means that while the government might be able to try to reduce energy use in the desalination plants or secure green electricity, they might not because there may be other industries that can reduce the emissions at lower costs. This sort of system level optimisation may not be possible in bigger countries; but for a small island state where our renewable resources are too scarce, that might be the only way.

Hydrogen ecosystem II

When I first penned the blog post on hydrogen ecosystem, I had a couple of ill-fitting ideas that I thought could come together but I did not successfully pull them together beyond putting them in a single blog post. What I really meant to say is that the government will need to do more work understanding and studying the nuances of the ecosystem and industrial value chain that makes sense for green hydrogen and then perhaps take action to ease the struggles of the market in developing projects.

The thing about green hydrogen is that it is something that requires quite a fair amount of new infrastructure. And the situation is uncertain because governments are thinking that maybe electrification will be more dominant and want to avoid investing in white elephants. Or they think that it is all a zero-sum game due to budget and resource constraints and that investing into transmission and distribution which meant favouring electrification would naturally be inconsistent with investing into more gas infrastructure.

In reality however, green hydrogen is made from renewable energy and hence the alleviation of electricity grid issues that foster more wind and solar can also support the development of a green hydrogen sector. The key here again is that the government needs to have better knowledge of how different parts of the value chain works and the value they are contributing.

Only in appreciating that, the governments can make the right moves.

Hydrogen ecosystem

Industries in an economy do not stand alone. This was an idea long appreciated by the Singapore government and that was how they continually managed one of the most successful continuous investment attraction programme. Of course it was dynamic and evolved with times and development of technology. The Economic Development Board of Singapore was relentless, and they did a great deal of work mapping industries and value chains, understanding how they connected with each other, working out how they work, and collecting feedback non-stop from their consistent interaction with the industry.

With the energy transition, a lot of government wants to attract and drive more renewable energy investments in their countries. Southeast Asian governments look with interest as Vietnam ran one of the more “intense” feed-in-tariff programme that propelled them into the top solar power generation market in the region. Taiwan had a successful programme as well, and led some of the North Asia Pacific economies in driving development of their offshore wind sector.

Yet we are probably hitting diminishing marginal returns with such policies thinking that the market can do wonders. For one, solar panels are almost pure capital goods, the cashflow profiles are very predictable and easy to model – especially when you have a long term power purchasing agreement. Capital investors can understand such projects more easily and willing to put funds into projects directly. Newer technologies and the next frontiers of the energy transition won’t be so simple.

Battery storage systems and green hydrogen production will require more policy tweaks and efforts from the governments. Battery energy storage systems do not have very established business models around them. Users can use them for energy arbitrage – that is, to buy electricity from the market when prices are low and sell them when it’s high; or to provide ancillary services to the market such as various reserves or supporting frequency and voltage regulation. Or the users benefit from reliability guarantees coming from the batteries. Green hydrogen on the other hand, has so many different applications and potential offtaker but is difficult to transport and store.

These means that the new technologies require a lot more new infrastructure investments or definition of regulations and policies to stabilise their markets and be de-risked enough for investors to come into the community and start their businesses.

Market for green premium II

Airlines are in the business of transporting people around. Or maybe it’s about curating and creating the best experience in air travel? Or about building a brand? Or is it about bringing people to places and catalysing activities, businesses for locations that would otherwise be overlooked by travellers? Seen that way, the fuel cost of an airline would always be considered a cost. Therefore, to keep cost low, or deliver the greatest profits, the airline will see their fuel as a commodity.

What if the choice of fuel they use starts impacting the customer segments they are targeting or they can serve? What if using sustainable aviation fuel allows them to attract more premium customers? What if they could sell their air tickets at a higher price when they are demonstrably emitting less carbon dioxide? And what if doing so also help them comply with some ICAO requirements?

The market for green premium turns various cost parameters in businesses into a tool for something else. There’s an opportunity to use these new parameters to disrupt the business. Years ago, the low-cost carrier disrupted some of the most traditional airline businesses. Would a low-carbon carrier do the same? What other elements of the whole airline business can be refashioned to fit the whole sustainable, low-carbon identity?

Case on climate change

It’s almost surreal that the explanation of climate change, its far-reaching consequences and the warning of the lack of action as well as the foresight on the reluctance to switch from fossil fuels is so cogently made in 1985 before the US Congress.

And today, we still have what we have happening in the US. Meanwhile, other developing countries are massively adopting green energy, unlocking the opportunities and growth which comes from the energy transition.

The economic downsides of displacing the traditional, carbon-intensive activities were huge in 1985, but compared to the manner we allowed the activities to have expanded till today, humanity seemed like it’s dancing towards the edge of the cliff.

Means of life

James Clear, author of Atomic Habits made an astute observation that led to his exploration of habits and eventually the best-seller. He observed that people often had the same goals but they do not end up with the same results. This meant that goal-setting, while being an important first step, wasn’t what achievement is about.

Our culture sometimes seem to think that setting up goals is enough, that it would naturally push everyone or everything to place. That cannot be farther from reality; and having that sense of purpose for life isn’t exactly sufficient. We need to discover the means by which we fulfill our purposes and reach the goals.

What do you think are your means of life? Is it about money, resources? Financial wealth? Or relationships, connections, networks? What fuels you towards your life goals?

Supply side perspectives

There was a time when demand and pricing was what matters because the rise of logistics and transport technologies made it easy to ship things around or even store things for long. So production becomes so isolated from consumption that as long as you can price things right on demand side, you can be producing anything anywhere.

Profit then is just about finding lower cost locations, resources, manpower, materials and so on. Services gradually have those attributes as they are increasingly performed remotely. But when we start considering supply chains of products, issues of resilience as well as carbon emissions, things goes a bit tricky.

The future low carbon world might be one where supply chains are shorter, where consuming local looms large and where decentralisation returns. Powering decentralisation is simply the recognition that there’s both financial economy and carbon economy; that when we need to economise on carbon, we can afford it.

Recycling woes

When you deposit a recyclable item into the rubbish bin or down the chute here in Singapore, did you know that it means the item will actually never be recycled? It will definitely end up in the incineration plant where everything is burnt. Metals are sometimes recovered but that is just about all. This is because everything collected in the green waste bin by the licensed public waste collectors have to be sent to the incineration plants.

On average, incineration removes more than 90% of the waste matter, leaving a residue which is buried in our offshore landfill at Pulau Semakau. Soon, when the Integrated Waste Management Facility in Singapore is built, there might be more post disposal sorting that takes place after our public waste collectors retrieve the waste. But before that, despite the possible economic incentive of picking out suitable waste materials or matters to be recycled before incinerating the rest, the market is unable to respond to them.

Incineration keeps going and expanding in Singapore as waste volumes increase because that had been a proven solution that is difficult to challenge even when contending technologies and approaches works. If it ain’t broke, why fix it? Yet as our landfill approaches the point of its maximum capacity, we cannot keep kicking the can down the road.