Former fossil-fuel sites gain a second life in clean energy
- Editorial Team SDG7
- 19 hours ago
- 5 min read
Published on 26 August 2026 at 03:22 GMT
By Editorial Team SDG7
Retired coal mines, power stations, refineries and other industrial sites are becoming test beds for clean energy redevelopment. Solar arrays can occupy disturbed land, batteries can use former generating sites, mine workings can support pumped or thermal storage, and old industrial plots can host component manufacturing. The appeal is practical: these places may already have roads, substations, transmission lines, water access, workshops and a workforce familiar with complex energy operations.
That inheritance can shorten part of the development process, but it does not turn every fossil-fuel property into a ready-made clean-energy hub. Contaminated soil and groundwater, unstable mine ground, ageing equipment, disputed liability and a mismatch between old and new jobs can all weaken the case. Repurposing therefore sits at the intersection of electricity planning, environmental restoration and regional economic policy.
Reusing grid connections and industrial assets
One potential advantage lies in the grid connection. A retired power station was built to send large volumes of electricity through a substation and transmission network. A new solar, wind or storage project at the same location may be able to reuse parts of that system, potentially reducing the additional land and investment required for a greenfield connection.
The World Bank identifies solar generation, battery and thermal storage, pumped hydropower and synchronous condensers among the possible uses of coal-plant sites. A synchronous condenser can reuse generating equipment to provide voltage control and inertia without burning coal. The Bank also notes that the best combination depends on renewable resources, available land, system needs, economics and social and environmental conditions.
Existing infrastructure is an advantage rather than a guarantee. Transmission equipment may require refurbishment, and a connection designed for steady coal generation may not suit variable generation or charging and discharging from storage without further studies. Grid access rights, market rules and the timing of closure can also determine whether capacity is preserved for the replacement project or lost in an interconnection queue.
The same logic extends beyond power stations. Refineries and heavy-industrial land may offer large plots, port or rail access, high-voltage supply and buildings suitable for clean-energy manufacturing or fuel production. Former mines can provide disturbed land for solar and wind, while pits, shafts or reservoirs may be assessed for pumped storage, compressed-air systems or geothermal heat. Each option depends on geology, water management, engineering condition and commercial demand.
Pollution does not disappear with a new use
Redevelopment can place productive activity on land that has already been disturbed, reducing pressure to build on farmland or habitat. The United States Environmental Protection Agency says infrastructure can differentiate contaminated land, landfills and mine sites from other renewable-energy locations. Its RE-Powering programme also treats safe reuse as a multi-stage process involving pre-screening, investigation of site conditions, feasibility, design and development.
That sequence matters because a renewable project does not itself remediate ash ponds, hydrocarbons, heavy metals, acid mine drainage or unstable ground. Legal responsibility for cleanup can remain contested when ownership has changed or an operator is insolvent. Some sites can be reused after investigation with limited intervention; others require long-term treatment, monitoring and restrictions on where foundations, cables or workers can be placed.
Combining cleanup planning with future use can avoid work being duplicated. It can also reveal conflicts. Capping contaminated soil may suit a lightweight solar installation but not a factory requiring deep foundations. Flooded mine workings may offer storage or heat, yet water chemistry and connections to local aquifers can impose continuing controls. In such cases, the value of the energy project depends on environmental obligations being defined and financed rather than deferred.
Employment effects vary by project and region
Repurposing is frequently presented as a way to retain energy employment. Construction, demolition, remediation, electrical work and equipment assembly can create substantial short-term demand, while operations, storage and grid services support a smaller permanent workforce. Workers from fossil-fuel sites may bring transferable knowledge of safety systems, high-voltage equipment, turbines, logistics and industrial maintenance.
The number and quality of replacement jobs remain central questions. The World Bank's coal-plant study indicates that a renewable or storage project at the same site might directly re-employ only about 10 to 20 per cent of the former plant workforce, depending on the chosen technology. Solar and wind facilities generally require fewer on-site operational staff than coal plants, and construction jobs may be temporary or filled by contractors from outside the region.
The International Labour Organization found that coal closures in Indonesia, the Philippines and Viet Nam can affect not only direct workers but also the wider industrial ecosystems and local livelihoods built around mines and plants. Its analysis places skills development, social dialogue, labour-market planning and support for affected communities within a just-transition response. These findings complicate claims that one new energy facility can replace an entire fossil economy.
South Africa's Komati power station illustrates both the opportunity and the scale gap. The roughly 1,000-megawatt plant generated its last electricity in 2022. A World Bank-supported project is financing decommissioning and plans for 150 MW of solar, 70 MW of wind and 150 MW of batteries on and around the former plant. The project includes measures for workers and communities; the World Bank describes it as a potential blueprint if it succeeds, rather than evidence that the model will transfer automatically to other sites.
Regional renewal can broaden the employment base when repurposing is linked with supplier development, manufacturing, training and other local industries. Outcomes depend on who owns the replacement assets, where contracts are awarded, whether displaced workers can access new roles, and whether municipal revenue lost from the fossil operation is replaced. Community participation also affects decisions about cleanup, heritage, land access and alternative uses.
Reusing former fossil-fuel sites connects most directly with SDG 7 (affordable and clean energy) because it can add renewable generation and storage while drawing on existing energy infrastructure. Evidence from the World Bank, the United States Environmental Protection Agency and the International Labour Organization indicates that outcomes also depend on grid suitability, environmental restoration, employment and measures for affected workers and communities.
Further information:
• World Bank, Coal Plant Repurposing for Ageing Coal Fleets in Developing Countries, supports the assessment of reuse options, grid assets, costs and indicative workforce retention.
• United States Environmental Protection Agency, The Value of Existing Infrastructure for Renewable Energy Development, explains how infrastructure affects redevelopment prospects on contaminated and mined land.
• United States Environmental Protection Agency, How to Develop Sites for Renewable Energy, supports the description of investigation, cleanup planning and development stages.
• International Labour Organization, A just energy transition in Southeast Asia: the impact of coal phase-out on jobs, supports the discussion of direct, indirect and regional labour effects.
• World Bank, Factsheet: Eskom Just Energy Transition Project in South Africa, provides the verified Komati project capacities and worker-and-community context.
