Covering water with solar panels is not a new idea. But for some it represents an elegant mitigation of water shortages in the West. Doing so could reduce evaporation, generate more carbon-free electricity and require dams to run less frequently to produce power.
But, so far, the technology has not been included in the ongoing Colorado River negotiations between the Upper Basin states of Colorado, New Mexico, Utah and Wyoming, the Lower Basin states of Arizona, California and Nevada, tribes and Mexico. All are expected to eventually agree on cuts to the system’s water allocations to maintain the river’s ability to provide water and electricity for residents and farms, and keep its ecosystem alive.
“People in the U.S. don’t know about [floating solar] yet,” said Scott Young, a former policy analyst in the Nevada state legislature’s counsel bureau. “They’re not willing to look at it and try and factor it” into the negotiations.
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📸: Jake Bolster (@jakebolster)
The built environment is undergoing a structural transformation driven by regulation, resilience and resource efficiency in construction. The UK’s post-Grenfell regulatory regime has intensified accountability across the sector, demanding transparent dutyholder responsibility and measurable performance in sustainable construction. The government’s plan to reform water governance, alongside stricter rules on leakage and pollution, elevates the importance of sustainable building design that prioritises water efficiency, life cycle cost and whole life carbon assessment. Developers face rising expectations to integrate eco-design for buildings that reduce run-off and demand rather than relying on infrastructure resilience alone.
Climate adaptation is now overt reality, with managed retreat shaping policy and finance. The demolition of coastal homes in Thorpeness demonstrates how location risk is being priced into valuations and insurance. This shift underscores the necessity of sustainable urban development based on lifecycle assessment, whole life carbon reduction and low carbon design to mitigate the environmental impact of construction. The resilience transition highlights that net zero whole life carbon and circular economy principles are not theoretical ambitions but essential for long-term asset viability.
Innovation on the supply side is reinforcing circular economy in construction. The University of Birmingham’s new rare-earth magnet recycling plant supports a circular supply chain for renewable building materials essential to low carbon building systems, from heat pumps to vertical transport. Yet progress on decarbonising materials such as cement and steel remains uneven, showing that embodied carbon in materials and process transparency must go beyond artificial intelligence and data analytics to achieve meaningful carbon footprint reduction. Cleaner production depends on applying life cycle thinking in construction and adopting low embodied carbon materials supported by environmental product declarations (EPDs).
Investment in flexible energy infrastructure, including platforms enabling energy-efficient buildings to interact with the grid, signals a future of decentralised, renewable power and carbon neutral construction. Policy signals remain inconsistent, but the imperative for environmental sustainability in construction is clear. Build fabric-first, electrify systems, embed circular construction strategies and specify green building materials validated through whole life carbon reporting. Those priorities define sustainable material specification, improve building lifecycle performance and align with BREEAM and BREEAM v7 standards, strengthening the economic case for decarbonising the built environment.
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