OFGEM published yesterday a factsheet to outline what is happening and the benefits of P272. This can be accessed through https://www.ofgem.gov.uk/sites/default/files/docs/2015/07/factsheet_131_cheaper_electricity_for_businesses_web_0.pdf
The idea is to charge customers more accurately for the time of use where peak times typically early evening costs more than off peak times when there is less demand and more renewable electricity available.
Any maximum demand smart meter that comes up for renewal after 5th November, will be half-hourly metered for 45 days and then charged accordingly.
While this arrangement should offer some savings to some larger business, it will be difficult to tender a supply for the most competitive offer, as the final prices will probably only be available long after the start the contract.
Alpine Utilities will request some further clarification on this point.