u/Additional-Appeal-93

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Hi all,

Nottingham and trying to decide between two solar and battery quotes. Would appreciate any views, especially from people who know installs or have similar set ups.

We use quite a bit of electric, around 8,276 kWh a year. We also have an EV and cheap overnight electricity.

What I’m trying to do is charge the battery overnight, use the battery during the day, use solar to top things up, and export anything spare. Basically trying to avoid using peak rate electric as much as possible.

I’m mainly looking at AIKO panels with Sigenergy inverter and batteries. I’m not really looking at Fox or Tesla

Option 1 is from Sunwise Solar
25 x AIKO 490W panels
12.25 kWp system
Sigenergy Sigen Hybrid 10.0 SP inverter
2 x Sigenergy BAT 10.0 batteries
17.52 kWh usable battery

Estimated annual generation 9,716 kWh

Cost £16,026.94

This looks the strongest system on paper. Maximising roof panels, more generation, bigger inverter and decent battery size. My concern is it assumes no export limit, so I guess G99 and DNO approval need confirming properly. With EON next Drive Tarriff at the moment

Option 2 is from Future Proof Solar.

21 x AIKO 475W panels
9.975 kWp system
Sigenergy 8 kW Energy Controller
2 x Sigenergy BAT 10.0 batteries
About 17.6 kWh usable battery

Estimated annual generation 7,694 kWh

Cost about £13,200 if the second battery is confirmed

This one looks better value to me gives similar battery capacity but around 2,022 kWh less generation per year than the Sunwise option. It is also about £2,827 cheaper.

My current thinking:
Sunwise is the best technical system. Other option looks like the best value. The extra Sunwise cost gives around 2,022 kWh more annual generation, but I am not sure if that justifies the extra £2,827.

Questions:
Would you pay the extra for the bigger 25 panel Sunwise system?

Any concerns with Sigenergy, AIKO panels, G99 approval, export limits, or battery charging from cheap overnight tariffs?

Thanks in advance. I am trying to avoid being pushed into the wrong system and would value practical views.

Hi all,

Nottingham and trying to decide between two solar and battery quotes. Would appreciate any views, especially from people who know installs or have similar set ups.

We use quite a bit of electric, around 8,276 kWh a year. We also have an EV and cheap overnight electricity.

What I’m trying to do is charge the battery overnight, use the battery during the day, use solar to top things up, and export anything spare. Basically trying to avoid using peak rate electric as much as possible.

I’m mainly looking at AIKO panels with Sigenergy inverter and batteries. I’m not really looking at Fox or Tesla

Option 1 is from Sunwise Solar
25 x AIKO 490W panels
12.25 kWp system
Sigenergy Sigen Hybrid 10.0 SP inverter
2 x Sigenergy BAT 10.0 batteries
17.52 kWh usable battery

Estimated annual generation 9,716 kWh

Cost £16,026.94

This looks the strongest system on paper. Maximising roof panels, more generation, bigger inverter and decent battery size. My concern is it assumes no export limit, so I guess G99 and DNO approval need confirming properly. With EON next Drive Tarriff at the moment

Option 2 is from Future Proof Solar.

21 x AIKO 475W panels
9.975 kWp system
Sigenergy 8 kW Energy Controller
2 x Sigenergy BAT 10.0 batteries
About 17.6 kWh usable battery

Estimated annual generation 7,694 kWh

Cost about £13,200 if the second battery is confirmed

This one looks better value to me gives similar battery capacity but around 2,022 kWh less generation per year than the Sunwise option. It is also about £2,827 cheaper.

My current thinking:
Sunwise is the best technical system. Other option looks like the best value. The extra Sunwise cost gives around 2,022 kWh more annual generation, but I am not sure if that justifies the extra £2,827.

Questions:
Would you pay the extra for the bigger 25 panel Sunwise system?

Any concerns with Sigenergy, AIKO panels, G99 approval, export limits, or battery charging from cheap overnight tariffs?

Thanks in advance. I am trying to avoid being pushed into the wrong system and would value practical views.