G7 leaders target zero-carbon economy

Global climate talks received a symbolic boost today, as the G7 group of rich nations threw their weight behind a long-term goal of decarbonising the global economy over the course of this century.

Thejoint communiquefrom the leaders of Japan, Germany, the US, UK, Canada, Italy and France reaffirms theircommitmentto the internationally agreedtarget将变暖限制在低于2摄氏度pre-indu之上strial levels. It also reiterates their commitment to deep cuts in emissions by 2050.

然而,今天的声明更进一步backing a long-term goal of cutting global greenhouse gas emissions at the “upper end” of 40-70% below 2010 levels by 2050 and decarbonising completely “over the course of this century”.

These milestones are broadly in line withthe pathto avoiding more than 2C of warming, set out by the Intergovernmental Panel on Climate Change (IPCC) last year. The IPCC said this would require “near zero emissions of carbon dioxide and other long-lived greenhouse gases by the end of the century”.

The 40-70% reduction on 2010 levels by 2050 is the range for 2C set out by research organisation Climate Analyticsearlier this year．它也几乎达到70 - 95%范围的emissions reduction by 2050 that would be consistent with limiting warming to 1.5C. A review of whether to adopt this tougher temperature target is expected to conclude at UN climate talks in Bonn this week.

Powering up Paris?

The G7 declaration calls this year’s UN talks in Paris “crucial for the protection of the global climate” and says: “We want to provide key impetus for ambitious results”. It promises to put climate protection “at the centre of our growth agenda”.

However, the G7 nations only account for 19% of global greenhouse gas emissions. Former Australian prime minister Kevin Ruddarguedrecently that the larger G20 needed to drive the planned global climate deal.

As such, the good will of the G7 is hardly enough to guarantee success in Paris on its own. In the run-up to the 2009 climate talks in Copenhagen — variouslydescribedas a “failure”, “setback” or a “disaster” — the then-G8 group of leading nationssaid:

“We are committed to reaching a global, ambitious and comprehensive agreement in Copenhagen.”

The same2009 G8 statementset a goal of cutting emissions by “at least” 50% by 2050 – within the 40-70% range set out by the G7 today. It said developed countries should collectively cut emissions by “80% or more” compared to 1990 levels.

Group photo of the G7 leaders sitting together with their outreach guests on a bench. Source: Federal Government –Bundesregierung/Bergmann．

Zero carbon economy

Today’s text does not repeat this promise on developed country emissions. The novel element is its backing for potentially greater global ambition in 2050, along with complete decarbonisation by the end of this century.

Statements from NGOs — and some newspaper headlines — added their own interpretations to this new pledge. The Guardiansaidthe leaders had “agreed on tough measures” that would cut emissions by “phasing out the use of fossil fuels”. The Financial Times headlinesays“G7 leaders agree to phase out fossil fuels”.

Greenpeace said the text signalled the fossil fuel age was “coming to an end” and that coal, in particular, must be phased out in favour of 100% renewable energy. Christian Aid made similar points, asking global leaders to follow the UK incommittingto phase out unabated coal. G7 nations continue torelyon large fleets of coal-fired power stations, whose combined emissions are more than twice Africa’s total.

The G7 language on decarbonisation this century is not specific, however, and does not promise an end to the use of coal or other fossil fuels. Instead, the language could imply reachingnet-zero, where any remaining emissions are balanced by sequestration through afforestation or negative emissions technologies.

The most likely method of achieving negative emissions, biomass with carbon capture and storage (BECCS), iscontroversialbecause it might require very large areas of land to be set aside for fast-growing trees or other biomass crops.

The G7 “commit to” develop and deploy “innovative technologies striving for a transformation of the energy sectors by 2050”. The communique doesn’t explain which technologies would be considered “innovative”. However, the use of the plural term “energy sectors” perhaps points past electricity generation towards transport, heat and beyond.

Finance

The declaration is thin on new financial commitments – despite some high expectations heralded by chancellor Angela Merkel’sannouncementin May that Germany would double its contribution to international climate finance by 2020.

The communique says that climate finance is already flowing at “higher levels”. All G7 countries havepledgedvarious sums of money into the UN-backedGreen Climate Fund(GCF) over the past year, although all countries’ cumulative contributions are still only around $10bn.

This is well short of the $100bn a year that rich countries have pledged to provide every year by 2020. A significant proportion of this is expected to be channelled through the GCF. So far, there is no clear roadmap on how this money will be scaled up over the next five years – a source of contention for developing countries, which rely upon international donations to implement their own climate actions.

In the statement, the G7 countries pledge to “continue our efforts to provide and mobilize increased finance, from public and private sources”.

This doesn’t equate to a commitment to actually scale up finance, Oxfam’s policy lead on climate Tim Gore tells Carbon Brief:

“They’re saying that it’s higher than it was, and now they’re going to try and maintain it at that higher level. What we were looking for was what Merkel did, and say from the level we’re at now, we’re going up towards 2020.”

The statement also says that the G7 nations “pledge to incorporate climate mitigation and resilience considerations into our development assistance and investment decisions”. This could have particular implications for Japan, which is stillinvestingheavily in coal plants both domestically and abroad.

Conclusion

Despite its shortcomings, the stronger elements of the G7 communique were not easily won. Wording on the long term goal could reverberate at the UN negotiations taking place this week in Germany, sending a message about the pressure that countries such as Japan and Canada are under to toe the climate line.

Both nations have faced criticism for low ambition in their INDCs (still due to be finalised in Japan’s case), yet have nonetheless agreed to a statement pointing towards a decarbonised economy by the end of the century.

Alden Meyer, from the Union of Concerned Scientists, says:

“I think it shows the pressure that some of these laggard countries felt under from other countries and from the public in their own countries to not block the language. This is not a kumbaya moment that all of a sudden has transformed the long term goal discussion, and those who have been resisting good language in this agreement are suddenly going to turn around on decarbonisation in the long term goal. I think that’s the political significance.”

Main image: At the third working session of the G7 summit Merkel, Hollande, Cameron, Renzi, Juncker, Tusk, Harper, and Obama discuss energy and climate issues.