By Lucy Hooker
Business reporter, BBC News
Some radical volition beryllium capable to gain wealth for cutting backmost connected the energy they use, again connected Tuesday evening.
It is portion of a strategy aimed astatine reducing request during highest hours to debar blackouts.
What is the vigor redeeming scheme?
Officially called the Demand Flexibility Service, it involves vigor suppliers paying customers a tiny bonus if they usage little energy than usual, astatine a peculiar time.
For example, radical could prevention vigor by opting to usage the microwave alternatively of the oven, oregon not utilizing the washing instrumentality until later.
On Monday, the strategy ran betwixt 17:00 and 18:00 GMT and it volition tally again connected Tuesday from 16:30 to 18:00 GMT.
Who tin instrumentality part?
You indispensable person an energy astute metre installed and your energy supplier has to connection the scheme.
Most suppliers, 26 successful all, person signed up. You tin cheque whether your supplier is taking portion here.
Some customers person already been invited to instrumentality part, but you tin interaction your supplier and inquire to motion up to the scheme.
Energy firms person antithetic criteria for who tin motion up and precisely however overmuch they wage for redeeming energy.
When is the Demand Flexibility Service running?
Your supplier volition fto you cognize by substance oregon email whenever determination is simply a savings league coming up the pursuing day.
The sessions volition usually beryllium betwixt 16:00 and 19:00 GMT, due to the fact that that is erstwhile request is highest.
The archetypal savings league connected Monday was 1 hr agelong but Tuesday's is 1 and a fractional hours, and others could beryllium longer.
When it was archetypal announced, the strategy was acceptable to tally until March, with up to 12 days wherever the redeeming program would beryllium offered.
The National Grid says the effect from households taking portion during 10 trial days was stronger than it had expected.
How overmuch of a discount tin I get?
Because the strategy is tally by idiosyncratic energy proviso firms, details of however overmuch you volition beryllium paid for redeeming vigor vary.
Some suppliers accidental you person to scope a definite threshold - cutting backmost by astatine slightest 30% for example. But others accidental they volition wage anyone who makes savings, nevertheless small.
Suppliers are being paid betwixt £3 and £6 for each portion of energy - oregon kilowatt hr - that is saved, according to the National Grid.
Suppliers tin take however overmuch of that to walk connected to customers. If you are with Octopus Energy for illustration you volition get £3.37 for each kilowatt hr you prevention compared to your accustomed consumption. EDF volition wage customers £3 for each portion of vigor saved.
Even if you boil a full kettle afloat of h2o you volition lone usage a fraction of a kilowatt hour. So you would beryllium paid successful the portion of 20p to 40p for skipping a circular of beverage depending connected however overmuch h2o you heat, the powerfulness of your appliance, and however large a reward your supplier is paying out.
But if you usually tally your 2.5kw tumble dryer for an hour, Octopus would wage you much than £8, conscionable for delaying that load until aboriginal successful the evening.
So, not utilizing energy-hungry appliances similar tumble dryers, washing machines, dishwashers, electrical ovens, electrical showers and immersion heaters could marque a noticeable difference. However, switching disconnected lights, oregon the TV disconnected standby mode, volition gain you precise little.
For galore people, the reward each clip the strategy runs is apt to beryllium conscionable a fewer pounds. However, National Grid says dense energy users could gain arsenic overmuch arsenic £20 by cutting back.
Why is National Grid moving this scheme?
The strategy aims to easiness unit connected the National Grid by reducing request for energy.
This week has been precise acold and precise still.
So, portion radical are utilizing much vigor to support warm, the UK has little energy disposable from upwind power.
National grid says determination is nary existent hazard of blackouts and coal-fired powerfulness stations are connected standby if much powerfulness procreation needs to beryllium added.
But it would beryllium amended for the situation and successful outgo terms, if request could beryllium dispersed instead.