While British Gas has pledged to use this benefit to maintain its price competitiveness, there has been no such pledge from other suppliers.
At first, such a pledge sounds dryly resolute, like the plot synopsis for a science documentary.
Every party to a peace or arms control agreement makes such a pledge.
Obama hasn't made such a pledge, and Furman won't say by how much or when Obama might slash corporate tax rates.
At least, the persistent Mr Stoiber seemed to worm such a pledge out of Mr Kohl at a meeting in a Bavarian monastery in the summer.
And it must include immediate downpayments on deeper integration, such as a pledge to use joint funds to recapitalise Spanish banks.
So it is going to be extremely tough for President Lula to achieve a further fiscal tightening while fulfilling his many election promises for extra social spending, such as a bold pledge to ensure that every poor Brazilian gets three square meals a day.
The coalition agreement included a pledge to hold such a review, focusing on EU rules on working hours.
BBC: William Hague launches full 'audit' of EU law and the UK
In this case good policy is also good politics: polls show nearly three-quarters of the American people support the deployment of missile defenses and by similar margins will choose candidates who pledge to deploy such systems.
CENTERFORSECURITYPOLICY: The Coalition to Protect Americans Now
But following his pledge to talk to such groups, America seems to doubt his commitment.
Each country would pledge a specified tax (such as a VAT surcharge) to provide the cash.
Such has been the case for the pledge to restore fish stocks to sustainable levels by 2015, and the promise to create networks of protected marine areas by 2012.
To deter such competition, the branded-cereal maker may pledge not to offer discounts.
The East European nations could pledge to pay full market prices for such energy supplies as soon as their respective economic revivals permit.
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All pledge to replace the lost revenue, but such promises have been broken before.
In January, the US Federal Trade Commission ended its anti-trust investigation and won a pledge from Google to end some practices, such as scraping data from websites to help target adverts, that had triggered the competition probe.
The prime minister again promised to honour his pledge not to cut universal benefits for pensioners - such as free bus passes and winter fuel payments - effectively ringfencing this part of the welfare budget.
BBC: Conservative conference: Cameron in benefit cuts warning
The drinks company SABMiller is one such partner who has signed up to measures that include a general pledge to "foster a culture of responsible drinking".
This despite the fact that such contacts had been explicitly predicated by the U.S. on a pledge by Arafat not to employ terrorism.
Merrill used Stevenson's stock pledge to issue a type of convertible security it calls Strypes, which other firms market with acronyms such as Decs and Traces.
FORBES: The Lauders did it. So did Craig McCaw and Ronald Perelman.
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