Every Victorian household will get a $50 bonus for visiting an energy comparison website, in an election-year giveaway to encourage people to find better power deals.

But the State Opposition accused the Andrews Government of trying to bribe voters by investing $48 million for the power-saving bonus in next month's budget.

Households will be eligible for the payment if they use the Energy Compare website between July and December, which shows consumers the best tariff for them based on their electricity and gas use.

People are not obliged to take up an offer or switch plans to be eligible for the $50 bonus.

Premier Daniel Andrews said a typical household had saved $330 on their energy bills in the first year alone by using the website.

"So many of our energy retailers bank on consumers not having the time or the know-how to shop around and get a better deal. We're putting an end to that," he said.

Mr Andrews with Lily D'Ambrosio and Clifton Hill couple Geoff Golden and Ros Aikman, who got a better deal on their bills. ( ABC News: Jean Edwards )

More than 700,000 people have visited the site in the past three years, with seven out of 10 people saving money by switching retail offers.

Government modelling suggests one million Victorian households will take up the offer of a bonus, but Mr Andrews insisted he was not concerned about the financial impact of being forced to spend more.

"If this is over-subscribed, that would be fantastic. That would be a great outcome," he said.

"I want every household to be on the best energy deal they could possibly be on."

Discount won't 'fix everything'

But Opposition spokesman David Southwick said the $50 bonus would do little to offset rising household power bills, following the closure of the Hazelwood power station in the Latrobe Valley.

"Today's announcement by Daniel Andrews is nothing more than an election bribe, attempting to win over voters who are paying for more than they ever have for power under his government," he said.

"If he thinks this is going to fix everything, then he's absolutely dreaming."

Householders need to check the website between July and the end of December to qualify. ( Victorianenergysaver.vic.gov.au )

The Opposition said the policy would disadvantage needy people who were not computer-savvy or objected to handing over their bank account details.

Clifton Hill resident Ros Aikman said she was in the process of switching to another power company, which would cut her electricity bill by $250 and her gas bill by $230.

"I think we were a bit complacent and lazy, we'd been with the same energy provider for five years. The fat had been built up in the margin and we hadn't been taking notice," she said.

But Caulfield South retiree Nira Elgart said the $50 bonus would do little to ease cost-of-living pressures.

"We expect something more than a $50 bribe," she said.

"It's just not going to really make our life any different and any easier."

The budget also includes $22 million to increase the utility relief grant cap from $500 to $650, which is meant to help households and families suffering unexpected hardship, pay their bills.

Victorian Council of Social Service chief executive Emma King said the money would help people on the poverty line who had been "fleeced" by power companies for years.

"Fifty dollars for many people might not sound like much, but when you don't have much money, when you are struggling to pay your bills, it makes a really big difference," she said.