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A tree planting project transforms a Bega Valley landscape; a young couple grinds out a living off just eight hectares; we turn unwanted fruit and veg into edible powder; and meet four-year-old dog trialler Alyssa Brown.

The week’s top environment news stories and green events. If you are not already receiving this roundup, sign up here to get the briefing delivered to your inbox

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A stalking tiger, playful long-eared owl chicks and a rare dormouse are among this week’s pick of images from the natural world

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World Land Speed record holder Andy Green examines how the extremes of speed and acceleration will affect the airflow around the Bloodhound supersonic car.

A directeur sportif must juggle route navigation, team communication, tactics and technical backup – all while driving at high speed. Amy Sedghi hitches a ride on the women’s Tour de Yorkshire to see how it’s done

“I need a bike change”. The urgent call comes after about 45km.

Another rider has hit Audrey Cordon-Ragot’s rear wheel in women’s Tour de Yorkshire and the radio crackles with her call for a replacement to be brought forwards. The Wiggle High5 team’s directeur sportif, Donna Rae Szalinski, has her foot on the accelerator and a hand on the horn, beeping a warning at the other support cars as she zips up the right hand side at 70kmh to deliver a new bike.

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The highly anticipated Finkel review on the future of the national electricity market was released on Friday. Its weak emissions target breaks Australia’s Paris commitments, but the review may well end the deadlock on carbon emissions that has plagued politics for over a decade

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Animals take umbrage when they feel that others are getting greater rewards than they are.

Chief Scientist Dr Alan Finkel's report into the national energy market is finally out in the open, and calls for immediate action.

Voluntary initiative marks first time companies from Asia, Europe and US have joined together to stop overfishing, illegal catch and use of slave labour

Nine of the world’s biggest fishing companies have signed up to protect the world’s oceans, pledging to help stamp out illegal activities, including the use of slave labour, and prevent overfishing.

The initiative will be announced on Friday, as part of the UN Ocean Conference this week in New York, the first conference of its kind at which member states are discussing how to meet the sustainable development goal on ocean health.

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Helpers endure the rain and swell to look after a whale that became stuck on a beach in New South Wales, Australia. The group used guide ropes to keep the animal upright as the tide fell, enabling it to breathe. The animal, which is nine metres long and weighs about 18 tonnes, will remain beached at least until the high tide arrives in the evening, experts said.

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The Finkel Review is scientifically modest but politically deft. Lukas Coch/AAP

The keenly anticipated Finkel Review, commissioned in the wake of last year’s South Australian blackout, has made a range of recommendations aimed at delivering a reliable, secure and sustainable National Electricity Market.

Among the proposals is a new Clean Energy Target to boost investment in low-carbon electricity generation, as well as moves to require high-emitting power stations to give three years’ notice before shutting down.

Below, our experts react to the measures.

“Security and reliability are first”

Hugh Saddler, Honorary Associate Professor, Australian National University

With so much focus on the design of a mechanism to support a shift towards lower-emissions generation, it is easy to forget that the primary purpose of the Review, commissioned following the “system black” event in South Australia on September 28, 2016, was “to develop a national reform blueprint to maintain energy security and reliability”. It is thus appropriate that security and reliability are the first topics to be addressed in the main body of the report.

System security is defined as the ability of the system to tolerate disturbances. Maintaining security requires the system to be able to prevent very high rates of change of frequency. At present the system has no explicit mechanism for doing this, but relies implicitly on the inertia provided, effectively as a free service, by existing large thermal generators.

The report recommends a series of regulatory energy security obligations to provide this service by various additional means, falling on the transmission network service providers in each of the five NEM regions (states), and also on all new generators connecting to the system.

System reliability is defined as the ability of the system to meet consumer demand at all times. In the old system, this is achieved by “dispatchable” generators, meaning coal and gas generators that can vary their output as required to meet demand.

In the new system, with large amounts of variable wind and solar generation, other supply sources are needed to meet demand at times of low wind speed and/or lack of sun – that is, to act as complements to wind and solar. Existing hydro and open-cycle gas turbine generators are ideally suited to this task, but with the growth in wind and solar generation, this capacity will very soon be insufficient for the task across the NEM (and is already insufficient in SA).

The Report recommends what it calls a Generator Reliability Obligation, which would be triggered whenever the proportion of dispatchable generation (which could include batteries and other forms of storage) in a region is falling towards a predetermined minimum acceptable level. The obligation would fall on all new renewable generators wishing to connect thereafter and, in the words of the Report “would not need to be located on site, and could utilise economies of scale” through multiple renewable generation projects “pairing” with “one new large-scale battery of gas fired generation project for example”.

If implemented, this recommendation would seem certain to greatly complicate, slow down and add to the administrative overhead cost of building new renewable generation. It would involve putting together a consortium of multiple parties with potentially differing objectives and who would otherwise be competing with one another in the wholesale electricity market.

A far better approach would be to recognise that dispatchable generation provides a distinct and more valuable product than non-dispatchable generation. There should be a separate market mechanism, possibly based on a contracting approach, to provide this service. If well designed, this would automatically ensure that economies of scale, as may be realised by pumped hydro storage, for example, would be captured. This approach would be far more economically efficient, and thus less costly to electricity consumers, than the messy processes required under the Report’s obligation approach.

“Energy efficiency is effectively handballed to governments”

Alan Pears, Senior Industry Fellow, RMIT University

The Review’s approach to the demand side is very focused. Demand response, the capacity to reduce demand at times of extreme pressure on the supply system, is addressed thoroughly. The past under-utilisation of this approach is acknowledged, and the actions of the Australian Energy Market Operator (AEMO) intended to capture some of its potential in time for next summer are outlined.

However, the deep cultural problems within the Australian Energy Markets Commission regarding demand response are not tackled. Instead, the AEMC is asked (yet again) to develop facilitation mechanisms in the wholesale market by mid-2018.

Energy efficiency is effectively handballed to governments. After making some positive comments about its valuable roles, recommendation 6.10 states that governments “should accelerate the roll out of broader energy efficiency measures to complement the reforms recommended in this Review”.

This is a disappointing outcome, given the enormous untapped potential of energy markets to drive effective energy efficiency improvement. But it clearly shows governments that they have to drive energy-efficiency initiatives unless they instruct energy market participants to act.

“It follows the wrong path on greenhouse emissions”

David Karoly, Professor of Atmospheric Science, University of Melbourne and Member, Climate Change Authority

The Finkel Review says many sensible things about ways to improve the security and reliability of Australia’s electricity sector. However, it follows completely the wrong path in what it says about lower greenhouse emissions from the electricity sector and Australia’s commitments under the Paris Agreement. This is disappointing, as Alan Finkel is Australia’s Chief Scientist and a member of the Climate Change Authority.

All economy-wide modelling shows that the electricity sector must do a larger share of future emissions reductions than other sectors, because there are easier and cheaper solutions for reducing emissions in that sector. However, this review’s vision is for “emissions reduced by 28% below 2005 levels by 2030” – exactly the same as Australia’s target under the Paris Agreement. It should be much more.

Australia’s commitments under the Paris Agreement are “to undertake ambitious efforts” to limit global warming “to well below 2℃ above pre-industrial levels”. The Targets Report from the Climate Change Authority in 2015 showed that this means Australia and the electricity sector must aim for zero emissions before 2050, not in the second half of the century, as suggested in the Finkel Review.

Alan Pears has worked for government, business, industry associations public interest groups and at universities on energy efficiency, climate response and sustainability issues since the late 1970s. He is now an honorary Senior Industry Fellow at RMIT University and a consultant, as well as an adviser to a range of industry associations and public interest groups. His investments in managed funds include firms that benefit from growth in clean energy. He has shares in Hepburn Wind.

David Karoly receives funding from the Australian Research Council Centre of Excellence for Climate System Science and an ARC Linkage grant. He is a member of the Climate Change Authority and the Wentworth Group of Concerned Scientists.

Hugh Saddler does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond the academic appointment above.

UPC and Hammond family announce plans for 1,000MW wind farm in Tasmania, and solar and storage.

Rescuers will try to refloat the 9m-long juvenile, which weighs up to 18 tonnes, at Sawtell on Saturday morning

Rescuers are working to save a young humpback whale that washed onto a beach on the New South Wales mid-north coast on Friday. The animal, which is nine metres long and weighs around 18 tonnes, would remain beached at least until the high tide arrives in the evening, experts said.

Beachgoers spotted the whale in the surf at Sawtell Beach south of Coffs Harbour early on Friday and it washed closer to shore at about 7am.

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Trump’s climate stance is blatant and extreme but just as damaging is the daily denial that goes unchallenged, from airport expansion to pub patio heaters. A first step to change is to call it out #DailyClimateDenial

You know things are bad when it takes Donald Trump pulling the US out of the Paris agreement for climate change to be discussed during the UK election. His climate denial is of the extreme and obvious variety: pages were removed from the Environmental Protection Agency website explaining its causes and consequences when he came into office.

Equally if not more damaging, however, is the daily climate denial that passes mostly unremarked all around us. The Institute of Directors recently proposed not one, but two new airport runways for London in a report called Let’s push things forward. It made no mention of the effect on rising emissions and a better title might have been “Let’s push things over the edge”. The oil company BP’s irony free sponsorship of the British Museum’s Sunken Cities exhibition merely highlighted how removed climate now is from our everyday cultural imagination.

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Chief scientist’s report flies in the face of previous recommendations on reducing electricity emissions

Less than two weeks ago, Alan Finkel told the Senate his landmark report would help Australia meet the commitments it made in Paris to reduce its economy-wide emissions by 28% below 2005 levels by 2030.

But his recommendations on the future of the National Electricity Market, released today, appear to fly in the face of those very commitments.

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Landmark report... or 'political agreement to let the planet burn'? A collection of the comments on, and reactions to the Finkel review.

Chief Scientist Alan Finkel’s long-awaited review of the National Electricity Market, released today, will make a significant difference to Australia’s electricity system in three key areas: reliability (making sure the system generates enough power to meet demand), security (making sure the system doesn’t break), and governance (making sure the electricity market can run effectively).

Reliability

The review recommends a Clean Energy Target (CET), which will provide subsidies to new low-emissions generation. The actual choice of scheme is less important than its durability. If broad political agreement can be reached on this target, it can provide the policy certainty that industry crucially needs to build new generation capacity and meet electricity demand.

Finkel also proposes a Generator Reliability Obligation, which places a limit on further wind and solar power in regions that already have a high proportion of intermittent generation. New intermittent generators will have to provide backup for some of their supply, in the form of new storage or contracts with new dispatchable generators such as gas. The aim is to ensure that federal and state subsidies for renewables do not push too much intermittent generation into the market without adequate backup.

Large generators will also need to provide a reasonable notice of closure – the review suggests a period of three years – before leaving the market. The aim here is to ensure the market has enough time to respond by installing new generation.

Finally, the review floats the possibility of further changes to ensure reliability, potentially a day-ahead market to lock in supply ahead of time, or a strategic reserve – a mechanism by which the market operator can sign contracts requiring generators to sit idle unless needed in an emergency.

The market operator (AEMO) can already do this, and the report is silent on how a strategic reserve would be different or whether it is definitely needed.

Security

To secure the electricity system, Finkel calls for existing standards to be tightened and new mechanisms to be introduced.

Transmission companies will be required to provide and maintain a prescribed level of inertia in the system – high levels of inertia can prevent rapid changes in frequency that harm the system. Fossil fuel generators may be required to change their settings to control the frequency in the system, whereas new generators, including renewables, will be required to provide fast frequency-response services to help avoid frequency fluctuations that can damage the grid.

While technical in their nature, these measures will reduce the likelihood of instability in the system and provide extra tools to fix the it if instability arises.

Finkel also makes recommendations to bolster the emergency management plan for the 2017-18 summer and to encourage consumers – both residential and business – to reduce their demand at peak times. The review strongly encourages the development of “demand response” schemes to give consumers incentives to switch off and help smooth the load at peak times.

Governance

The biggest change to how the market will be run is the proposed creation of an Energy Security Board (ESB). The ESB will comprise an independent chair and vice-chair, as well as the heads of the three governing bodies: the AEMC, AEMO and the market regulator (the AER). At a minimum, the ESB will be responsible for implementing many of the Finkel Review recommendations, although the panel leaves scope for it to do much more.

Finkel recommends a comprehensive review of the rules governing the electricity market. It also argues for increased accountability for market bodies and the COAG Energy Council, through enhanced performance indicators and a beefed-up process for determining and monitoring priorities for the energy sector.

What happens next?

The report makes a range of other recommendations designed to ensure better service for energy consumers, more transparency in gas markets, and improved planning and coordination of electricity networks.

The Finkel Review successfully addresses the main issues confronting the electricity sector today. At the very least, it is a step towards a more reliable and secure system.

The devil, as always, will be in the detail. Much will depend on how the recommendations are implemented. Australian households and business can only hope that the new Energy Security Board and the nation’s political leaders will see this through.

David Blowers does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond the academic appointment above.

Finkel wants new wind and solar farms to be paired with storage or gas fired generators. Renewables industry says reliability should be function of system, each individual power station.

Finkel spoke of an "unstoppable" energy transition, but he may have found a way to slow it down. He promises cheaper power and lower emissions, but leaves power in hands of "gentailers", meaning states will have to carry ambition, and reliability measures are controversial.

The long-awaited report from Chief Scientist Alan Finkel into Australia’s National Electricity Market was released today.

The key recommendation is the adoption of a Clean Energy Target. This mandates that energy retailers provide a certain amount of their electricity from “low-emissions” generators – sources that produce emissions below a threshold level of carbon dioxide per megawatt.

Crucially, Dr Finkel has not made a recommendation as to the precise threshold or the number of certificates to be issued, saying:

The Panel acknowledges that the specific emissions reduction trajectory that should be set for the electricity sector is a question for governments.

At a minimum, the electricity sector should have a trajectory consistent with a direct application of the national target of 26-28% reduction on 2005 levels by 2030, as per Australia’s international obligations under the Paris Agreement.

Independent Review into the Future Security of the National Electricity Market/The Conversation, CC BY-ND