"The key to working out your energy needs is first to understand your usage. If you know how much energy you use every day, week and month, you're in a better position to know what your needs are."
"If you are mains connected, you just need to read your bills. Your projected annual usage is shown on your monthly bill and you can of course refer to previous bills to see what you actually used."
"SAPs often overestimate a building's efficiency. For new builds, working with architects and energy consultants who specialise in low-energy design would be advisable if this is the route you are planning on taking."
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