By Shane Oxer — Campaigner for fairer and affordable energy
China has just demonstrated, at continental scale, what happens when governments decide they can redesign nature. For decades, Beijing has pursued one of the largest environmental engineering projects in history: the so-called “Great Green Wall”, a vast reforestation programme intended to halt the spread of the Gobi Desert. Billions of trees were planted, satellite images showed a greening nation, and the project was widely celebrated abroad as proof that determined states could “fix” ecological problems through scale and ambition. That confidence is now collapsing.
A recent peer-reviewed study published in the journal Earth’s Future confirms that China’s tree-planting programme has fundamentally altered the country’s water cycle.¹ The newly planted forests massively increased evapotranspiration, pulling moisture out of soils and river systems in northern and eastern China and releasing it into the atmosphere, where prevailing winds transport it westwards and deposit it over the Tibetan Plateau. The effect is not subtle. In some of China’s most productive agricultural regions, water availability has fallen by as much as 74 per cent.¹ Farmland is drying out, river systems are under stress, and long-settled hydrological balances have been disrupted. Meanwhile, vast quantities of water are now falling on sparsely populated, economically marginal high-altitude regions where it does little good.
The water has not disappeared. It has simply gone to the wrong place. China did not “heal” nature. It broke a planetary-scale system by trying to optimise it.
This should make Britain very uncomfortable, because the same category of thinking now dominates our own energy policy. The error in China was not stupidity. It was technocratic arrogance: the belief that complex natural systems can be treated like machines, governed by targets, optimised by models, and safely re-engineered at scale. Replace “forests” with “Net Zero” and this mindset is instantly recognisable.
Britain is now attempting, simultaneously and under legal compulsion, to replace a synchronous AC power system built around physical inertia and stored fuel with one dominated by weather-dependent generation, long transmission corridors, power electronics, digital control systems, batteries and, eventually, hydrogen. This is not conjecture; it is stated policy. The Royal Academy of Engineering has already warned that maintaining stability in such a system will require unprecedented levels of control, complexity and intervention.² National Grid and NESO have repeatedly acknowledged that the transition to a low-inertia, inverter-dominated system represents one of the greatest technical challenges ever faced by a modern power network.³
Yet this transformation is being driven not by engineering caution but by political timetable. The result is a system that is already showing signs of strain. Constraint and balancing costs, which arise when the grid cannot physically move power from where it is generated to where it is needed, reached around £1.4 billion in 2023 alone, according to official figures.⁴ This is not paid by ministers or departments. It is paid by consumers, through their bills. At the same time, vast numbers of new generation projects are being approved years, and in many cases more than a decade, ahead of any realistic prospect of the grid reinforcements needed to use their output.⁵ On paper, capacity is booming. In reality, much of it is trapped behind physical bottlenecks.
Supporters of the current strategy insist that “the system will adapt”. This is perhaps the most dangerous phrase in modern policy. Complex systems do adapt, but not always in benign ways. Sometimes they undergo what engineers call a phase change, reorganising themselves into a new, inferior and often unstable state. China’s hydrologists did not predict a 74 per cent collapse in local water availability. They believed they were “restoring” nature. They were, in fact, reprogramming a continental climate subsystem without understanding the consequences.
The British grid is also a complex, tightly coupled system, dependent on frequency stability, voltage control, fault current, inertia and real-time physical balancing. None of these are optional features. They are the conditions under which an industrial electricity system remains upright. We are now replacing large parts of this architecture with layers of software control and power electronics whose behaviour under extreme or correlated stress is not yet fully proven at national scale. The National Grid’s own strategic planning documents acknowledge the scale of this challenge and the degree of uncertainty involved.⁶
What makes this more dangerous is that Net Zero policy is not changing one variable at a time. It is changing generation, transmission, distribution, control systems, storage, demand patterns, land use and market design all at once. Traditional engineering practice avoids this for a reason. When too many critical variables are altered simultaneously, failures become harder to predict, harder to contain, and harder to recover from.
None of this appears in the Climate Change Committee’s pathway graphics. None of it appears in ministerial impact assessments. None of it features meaningfully in the planning decisions that are reshaping large parts of the British countryside in the name of a transition whose physical foundations are still not in place.
Just as China’s water did not vanish but merely moved destructively, Britain’s energy problems will not disappear. They will re-emerge as higher costs, greater fragility, permanent curtailment, and a growing dependence on emergency interventions to keep the system upright.
One day, a future government will commission a report into a major system failure or near-miss. It will conclude that the risk was foreseeable, the warnings existed, and that the system was pushed beyond safe limits by policy rather than engineering necessity. That is exactly what Chinese scientists are now saying about the Great Green Wall.¹
The real lesson is simple and uncomfortable. You do not fix complex systems. You respect their constraints. You preserve margins, you value inertia, you move slowly, and you favour robustness over elegance. Above all, you do not assume that models and targets have made you cleverer than the system itself.
When governments start believing they can redesign nature, they stop asking whether they should. China tried to re-engineer a desert and broke its own water cycle. Britain is now trying to re-engineer the power system, the landscape and the economy all at once. That is not climate policy. It is civilisational risk.
Endnotes / Sources
Staal, A. et al., “Land-use-driven redistribution of atmospheric moisture over China”, Earth’s Future, 2025/2026. (Study showing large-scale reforestation altered moisture transport and reduced water availability in key regions by up to ~74%.)
Royal Academy of Engineering, Engineering a Stable Net Zero Electricity System, 2023.
National Grid ESO / NESO, Stability in a Low Inertia System and related system operability framework documents.
UK Parliamentary Answers and Ofgem data on constraint and balancing costs, 2023 (~£1.4bn).
National Grid / NESO Appendix G, Gate 2 connection reform data showing EPCDs extending into the 2030s.
National Grid, Holistic Network Design and Beyond 2030 network planning documents.
SAY NO TO THE DESTRUCTION OF OUR LAND 
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