Sustainability consulting
We measure what we advise
Strategy is where most consultancies stop. We advise boards on energy, emissions, ESG and climate risk — then implement the programs and prove the outcomes.
Strategy, then proof
A sustainability consultancy that bridges the boardroom and the field — and brings the evidence back.
We advise on the strategy, design the programs, and stand up the technology and reporting that make progress measurable — including our own Virtual Energy Network and sustainability index. Intent becomes outcomes you can put in front of a board, an investor or a regulator.
What we cover
Six disciplines, one accountable team
Energy & emissions
Measure, reduce and procure: from emissions baselining to energy contracts and on-site generation.
Net-zero strategy
Credible targets and the pathway to reach them — costed, staged and accountable.
ESG & climate-risk reporting
Board-ready, framework-aligned disclosure that holds up to investors and regulators.
UN SDG programs
Align and report your impact against the 17 Sustainable Development Goals through our SDGi17 index.
Waste & water
Practical reduction and management programs — accounted, implemented and measured.
Board & leadership advisory
Climate governance and decision support for boards and executives, backed by deep environmental expertise.
Board-level advisory
Counsel boards actually trust
Climate risk and sustainability are now board-level questions. We bring decades of environmental expertise into the room — translating obligation and ambition into decisions executives can defend, and a plan they can act on.
Measured, not asserted
The platforms behind the proof
Our advice is backed by our own tools — so outcomes are evidenced, not estimated.
- SDGi17
- An index that maps and scores your impact against the 17 UN Sustainable Development Goals.
- Virtual Energy Network
- Shared, networked energy that turns strategy into real emissions reduction. Explore the VEN →
- Data+
- The measurement layer — energy, emissions, waste and water tracked against baseline over time.
Expertise & stewardship
Decades of environmental leadership, not a junior team
ReThink is led by senior practitioners with deep credibility in environmental science, energy and policy. Our clients — ports, councils and corporates — get advisors who have shaped the field, not just read about it.
How an engagement runs
Assess. Strategise. Implement. Measure.
Assess
Baseline the data — energy, emissions, waste, water, risk — and find the real opportunity.
Strategise
Set credible targets and a costed, staged pathway the board can stand behind.
Implement
Deliver the programs and technology — not just a document on a shelf.
Measure
Track outcomes against the baseline and report them transparently.
Answers
Sustainability consulting questions
What does a sustainability consultant actually do?
A sustainability consultant helps an organisation understand its environmental and social impact and turn it into advantage — setting energy, emissions and net-zero strategy, building ESG and climate-risk reporting, and designing the programs that deliver measurable results. ReThink Sustainability both advises on that strategy and implements and measures it.
Do you only advise, or do you implement as well?
Both. Many consultancies stop at a strategy document. We bridge strategy and delivery — advising boards on climate risk, energy and ESG, then implementing the programs and technology, including our Virtual Energy Network and sustainability index, that turn intent into outcomes.
How do you measure sustainability outcomes?
We baseline each engagement against real data — energy, emissions, waste and water — and track progress against it with our own indexes and platforms, so improvement is evidenced rather than asserted. If we advise it, we measure it.
What is ESG and climate-risk reporting?
ESG (environmental, social and governance) and climate-risk reporting disclose how an organisation manages its environmental and social impact and its exposure to climate-related risk. We prepare board-ready, framework-aligned reporting that stands up to scrutiny from investors, regulators and customers.
What are the UN Sustainable Development Goals (SDGs)?
The United Nations Sustainable Development Goals are 17 global goals for a sustainable future. We align programs to the SDGs through our SDGi17 index, so an organisation can see and report exactly which goals its actions advance.
Advice you can prove.
Start with a no-obligation conversation about where the value — and the risk — is hiding in your operations.