From James Barber
I read with amazement the article describing a $5000-per-home system to measure energy usage every 30 minutes with readings made available via a PC (3 December, p 30). For some time an Australian system, Electrisave, has been available in the UK for the sterling equivalent of $140 (see www.electrisave.co.uk). The Electrisave has the added convenience of a self-contained remote reader rather than the necessity of a PC, and the user can configure how often it measures electricity usage.
London, UK
