For electricity, choose "Basic simple energy" plan. Once the credit comes through (usually in 1 working day), sign up for a fixed plan, such as Everyday Bonus Fixed Plan (yes, you'll get $150 off, making total $350 off if you sign up in a two-step process described above). Everyday Bonus Fixed Plan is fixed until Oct 2023.
UPDATE
The code no longer works for the "Basic" plan. It now only works for "Bach" plan or if you bundle Electricity with Broadband. So you can try signing up for "Bach" and then switching to "Good nights" or "Everyday Bonus Fixed" later. If you want to go straight to "Good nights" or "Everyday Bonus Fixed", use the referal link, you'll get $100 credit and so will the referer, if you stay with Contact at least 30 days.
Can we access this if we are currently with Contact, or do I need to jump ship elsewhere?
Thanks,
Alan.