Solar PV & Battery Packages

The simple, cost effective way to generate and store your own solar energy to use at any time of the day

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Saving money with Solar PV and battery packages

With a solar PV and battery package, you can store energy that you generate from the sun during the day and use it in the early mornings and evenings when you would normally have to buy energy from the grid, thus minimising how much energy you need to purchase. If you also combine this with an agile energy tariff from Good Energy, you can ensure that you are always buying the cheapest possible energy based on your typical usage.

Benefits Of Renewable Energy

Frequently Asked Questions

Planning permission is not normally needed if you are planning a roof mounted system up to 1MW in size unless your property is a listed building, located in an Area of Outstanding Natural Beauty (AONB), a conservation zone or a national park. Further information surrounding planning permission requirements for solar installations can be found on the Planning Portal.

The intensity of the midday sun in Britain is about 60% of its value at the equator. Even in the winter, solar hot water systems will contribute to your hot water requirements, thus saving you money off your bills, and the boiler will ‘top up’ the rest. This is similar with solar PV systems; although PV cells have a higher output in direct sunlight, they also work on cloudy days.
Solar equipment generally comes with substantial warranties. For instance, many solar PV panels come with a guarantee of at least 80% efficiency after 25 years. Solar technology has been in use for decades and thus has been thoroughly tried and tested. Similarly, ground source heat pump systems have been widely used in North America and continental Europe for many years.
Solar systems are very reliable and low maintenance. Don’t take our word for it – the Energy Saving Trust states that they ‘require little maintenance’. You will need to ensure that nearby trees do not begin to overshadow the solar panels. PV systems have no mechanical moving parts so minimising potential faults. PV modules often carry a 25 year power output warranty; after this time the system would be expected to continue to function, but power output may be reduced. Heat pump systems are designed to operate for at least 20 years.
Any obstruction between the sun and a panel will cut down on its efficiency, so a very dirty panel would generate less power than a clean one. In agricultural areas we suggest having your panels cleaned every couple of years or so.
System size is dependent on a number of factors: (1) the amount of roof space available; (2) the amount of energy demanded; (3) the budget, but we’ll always be keen to suggest what seems to be the best size of system for your situation.
Capacity is the amount of energy in kWh that a battery can store. Batteries should never be drained completely. However, some are misleading and sold under the heading ‘total capacity’. Useable capacity is the specification that you need to know. For example a Tesla Powerwall advertised at 14kWh actually has 13.5kWh useable capacity.

A cycle is one complete discharge and one complete charge. In reality, the battery will not work in this way. A battery might only discharge 40% and then recharge 40% given the average demands on the system. This would be 2/5th of a cycle. Often battery manufacturers will warrant the battery for the number of cycles and therefore it is important to work out how many kWh your battery will delivery over it’s warrantied lifetime based on your average cycle.

An average kettle will need 2000 watts to boil water for a cup of tea. If your battery system only delivers 800w then it won’t be very effective. Likewise, if you are generating 5kW from your Solar PV array, but the battery can only take on 3kW then 2kW will be heading to the grid, wasting precious free energy for the site. Therefore, it is essential to check the power output of the battery system and the onsite requirements.

Perhaps the most important question is to ask what your likely future requirements might be. For example, are you planning to have EV charging? A larger capacity system can keep the house or business premises running and charge EV vehicles overnight. Grid trading is also an exciting option. Larger battery systems will mean more charging at lower rates and more to sell back to the grid at peak rates.

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