Why are more roofs not made of solar tiles?
Tesla's decision to stop offering solar roofs in August put the industry in focus. Higher costs, lower efficiency and complex installation explain why solar tiles remain a niche product.
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MoD objects to four windfarms in past year over radar interference fears
The Ministry of Defence has lodged objections against at least four planned windfarms in the past year, warning that spinning turbine blades could cause unacceptable interference with military radars, potentially putting it on a collision course with the energy department.