Earth & Water
Hydropower begins with a river, not a turbine
Flow, seasons and ecology shape the energy available from moving water.
THE BRIGHTLEAF COLLECTION · 10 ARTICLES
Explore all topics ↗Earth & Water
Rivers, underground warmth and other renewable resources.
Earth & Water
Run-of-river does not mean impact-free
A smaller reservoir changes the design, but does not remove ecological questions.
Earth & Water
Geothermal heating and geothermal electricity are different ideas
The shared name can hide very different temperatures, depths and equipment.
Earth & Water
Ground loops need a long-term plan
The buried part of a heat-pump system deserves attention before the garden is restored.
Earth & Water
Enhanced geothermal projects make geology part of the engineering
Accessing underground heat can require more than finding naturally flowing hot water.
Earth & Water
District heating turns many buildings into one heat network
Shared pipes can connect useful heat sources with demand, if the system is designed well.
Earth & Water
Biogas puts waste management in the energy picture
Useful fuel can be recovered from organic material, but leaks and feedstocks matter.
Earth & Water
Biomass is renewable only within a bigger accounting story
Regrowth, land use and timing determine more than the label alone can tell you.
Earth & Water
Tidal energy has predictable timing and demanding conditions
Knowing when the tide changes is helpful, but marine engineering still determines delivery.
Earth & Water
Wave energy must survive the waves it collects
Capturing ocean motion and enduring storms are two sides of the same design problem.