Solar Panel Installation
in Hertford

Usually yes, including on a roof slope facing the street. S.I. 2026/896 came into force on 27 August 2026. Since then, the conservation area restriction for houses in Part 14 Class A covers a wall, balcony or roof enclosure which fronts a highway, not roof slopes. Panels must not protrude more than 0.2 m from the slope or sit above the highest part of the roof. A flat-roof array in the conservation area needs a prior approval application before work starts, and listed houses fall outside Class A. An Article 4 Direction could also remove rights on particular properties, so check your address with East Herts first.

East Hertfordshire District Council is the planning authority for Hertford. A house installation that falls within permitted development needs no planning application. Some jobs do need one: planning permission and listed building consent for a listed home, prior approval for a flat-roof array in the conservation area, or planning permission where an Article 4 Direction removes the relevant rights. Those applications go to East Herts with details of the panel layout and equipment, so ask your installer what they will supply. The council adopted its Hertford Conservation Area Appraisal and Management Plan in March 2017, and it is worth reading the section covering your street before you apply.

Home battery safety depends on a suitable product, fitted in a suitable position by a competent installer. We fit SigEnergy battery systems and Tesla Powerwall 3, which stores 13.5 kWh with 11.5 kW continuous output. Choose an MCS-certified installer and ask where the battery will go and why. Adding a battery to solar is also likely to take the system above 16 A per phase. In that case a G99 application goes to UK Power Networks, which runs the local electricity network, before installation.

There is no reliable Hertford-only price list. The figure depends on the roof, system size, access and whether you add a battery, so a survey-based quote is the number to trust. As a national guide, the Energy Saving Trust (page updated 27 August 2026) says domestic systems are generally around 4.5 kWp and cost around £7,600, with battery storage around £5,000 to £8,000. Domestic solar panels and batteries are zero-rated for VAT until 31 March 2027, then 5%. Listed homes, and flat roofs in the conservation area, may also need a consent or prior approval application before work starts.

The individual roof matters more than the part of town. PVGIS models a 4.5 kWp system in central Hertford at about 4,624 kWh a year on a south-facing 35 degree slope, about 3,699 kWh facing east and about 3,601 kWh facing west, so orientation makes a difference of roughly a fifth. Shading from trees and nearby buildings, roof pitch and space, and whether the house is listed or inside the conservation area matter more than the neighbourhood name. A survey should model each usable slope on your own roof.

Going fully off-grid is rarely practical because winter generation is low. PVGIS models a south-facing 4.5 kWp system in Hertford at about 161 kWh in December against about 563 kWh in July, so a grid connection covers the winter shortfall. A battery lets you use more of your own daytime generation in the evening and reduces how much you buy from the grid. Staying connected also lets an MCS-certified system earn Smart Export Guarantee payments for surplus power, for example 12p per kWh on the variable Outgoing Octopus tariff.

Yes, the network operator is told either way. East Herts District Council names UK Power Networks as the company that runs the local electricity network. A system of up to and including 16 A per phase is notified under G98 within 28 days after commissioning. That is 3.68 kW on a single-phase supply or 11.04 kW on three-phase. Above that, G99 applies and the application must be made before installation. MCS says adding a battery to solar is likely to exceed 16 A per phase, so a solar and battery system will often go through G99. Ask each installer you compare who submits the paperwork and how long they have allowed for it.