Having installed a heat pump
Having installed a heat pump, I thought the 'heat pump tariff' was worth a look.....
I made note of our daily consumption, at start, 11.00, 16.00 end (Tariff is reduced rate 11-16). Mycalculation showed a saving, switched, all good.
When tariff kicked in, I continued monitoring/calculating, and DID show savings of ~ £1.30/day, HOWEVER, SP's website has a daily record of my account, showing Kwh and £££'s, THIS showed an INCREASE in my daily charge (Obviously, they show no calculation to support). Studying closely, I had a 'Eureka moment', noticed 'times are based on GMT' in small print (We are currently on BST), quick google produced '11-16.00 all year', only one thing to do, ring SP, simple.......
'Hi, is the heat pump tariff GMT?'
'Yes'
'So it's 12.00-17.00 now?'
'No, it's 11.00-16.00'
'How? If it's GMT, that's 12-16.00'
'No, it's 11.00-16.00'
'So it's NOT GMT?'
'It IS GMT'
'That isn't possible, we're on BST'
'I don't understand time stuff'
'Good god, can you ask someone, please'
'Yes, please hold'
40 minutes on hold before I gave up.........
E-mailed question, no response.
Still trying to understand how they/I differed, I started playing with numbers, amazed to find that total Kwh*PEAK rate+ daily s/c= THEIR calculated daily cost, seems split tariffs are beyond their capability.
Of course, this still doesn't resolve BST/GMT question, guess I'll never know.
I can only assume that SP saved a bit of money by outsourcing software development to a local pre-school class computer project.
MAYBE poor feedback here will prompt a response, think it's my last hope.
9 oktober 2025
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