Since keeping the blades turning freely is what gives turbines power, you'll want to ensure that yours is as clean and efficient as possible. Good maintenance and regular inspection will definitely help with this.
Solar panels don't need that much maintenance thanks to the fact that they have no moving parts - although they will require a clean now and then, and will need to be professionally replaced if they become damaged.
Problems with your solar panel? Find out how to tell if there's a problem, what sorts of issues are most common, and what kinds of steps you can take to get your solar panels repaired.
A dirty solar panel is an inefficient one: dirty solar panels will produce less power than clean ones, which may even cost you money over time. Find out how - and how often - to clean your solar panels.
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Stubborn lock? Key getting stuck in the keyhole? Locks can get dirty or rusted, especially if they're not used for some time. Find out how to clean and fix a dirty lock.
The height of your bath and where you position it will have a big impact on how easy it is to get in and out - which can be a safety concern, particularly if you have mobility issues.
Traditionally narrow bands of windows across the tops of buildings, but now seems to include any 'higher-than-average' window.