Yea, reached that transition point to only buying off peak for us. But that is 'only' 19 panels and a 10kw battery, and a heat pump.Are you meaning you are buying some off peak and no peak (sorry if I'm being thick)?
'Coz with PV and Battery wouldn't that be the norm once out of deep Winter?
I have to go back to January when I was routinely using "some peak", since 01-Feb I drew some peak on 08-Feb (PV=3.3kWh), 10-Mar (6.6kWh) and 11-Mar (5.6kWh) (**), and before 14-Feb I drew a piddly bit for an hour-ish before Off Peak started most days, but basically I have survived on Off Peak and PV since 01-Feb.
Last night Tesla prediction charged PW to only 30% (actually it charged to 45%, but started discharging long before end of Off Peak such that it finished Off Peak @ 30% ... it has been doing that, I assume on the basis of "overcharge and then check prediction is still optimistic as end of Off Peak approaches", I've wondered why not "Charge to minimum and top up later in Off Peak if prediction worsens")
(**) 48 panels
It's frustrating that the green techs don't balance very well. I did manage to make the HP 1/3rd more efficient this year by tweaking software, but it fundamental gets less efficient when it gets colder, when you need more heat and the panels are producing less to help. Means we have 2-3 months of paying ~£250 over winter then almost a 0 bill the rest of the time.