I've been looking into solar energy in the UK for a while now but haven't installed a system yet. The payback period feels way too long, especially considering maintenance costs. I heard about using water as a storage solution instead of expensive batteries. I have a big need for hot water, and I'm considering installing a larger solar array. Some sources suggest I should sell my solar energy (currently around 15p per kWh) and just buy gas (around 6p per kWh) to heat my water instead. This seems more financially savvy, but I'd rather reduce reliance on gas completely. My idea is to use a solar diverter and two water tanks—one for hot water and another for underfloor heating. Whenever the water reaches a certain temperature, I would export the excess electricity. I'm interested to know if anyone has skipped the battery costs and managed to create a more self-sufficient system. Would love some advice on whether this approach is viable or if I'm missing something! Cheers!
3 Answers
Honestly, you should weigh the pros and cons of exporting versus using the energy yourself. With the current rates for export, you might not be gaining as much as you could with hot water heating. Plus, there’s no such thing as too much solar! If you can make it work with how you use energy, you're onto something. Just keep in mind the cheaper tariffs and time it right!
If you're considering using your solar energy to heat water, that's definitely a smart move! Just remember, exporting energy gives you a lower price than what you pay. But with your setup, you'll be using that energy for your heating, which is great. Batteries do provide versatility and savings over time, but it sounds like you're more interested in a sustainable solution without the extra costs. Just be careful with what energy companies might charge in the future; alternatives could be beneficial!
You’re on the right track! It makes sense to export the energy during winter when sunlight is scarce, and use the profits to offset your heating costs. Batteries do come in handy for night-time usage or taking advantage of variable tariffs, but they add to the costs. You might wanna balance having both—storing some energy for later and exporting the excess in the summer. Just keep in mind that DIY setups can sometimes complicate exporting, since not all providers accept them. Good luck with your project!