The award-winning scheme in south London has been heralded as an example for others to follow by many politicians, not least Chancellor Gordon Brown. However, it recently came under attack for being neither totally sustainable nor zero carbon.
But Dunster has said his brainchild is capable of offering a zero-carbon lifestyle, and has blamed technology that is more than a decade old for the recent problems.
'It is a shame all of this has come up now, as in four months' time the development will be back up and running as a zero-carbon apartment block,' said Dunster.
'[BedZED] has been zero carbon and the only reason it isn't now is because the CHP (wood-chip heat and power plant) is broken. It is being replaced, as the technology is more than 10 years old and the company which made it has gone bust.'
Dunster added: 'The maintenance and the de-coking was a nightmare, but there's a really cool one out now, which works wonderfully. But that's the great thing about BedZED, if something isn't working then you just whip the old one out and fit in a new one.'