Church Solar in Hampshire — Winchester and Portsmouth Dioceses 2026

Two dioceses, one county

Hampshire is split between two Church of England dioceses. The Diocese of Winchester covers the north, west and central parts of the historic county including Winchester, Basingstoke, Andover, the New Forest, and south Hampshire mainland excluding the Portsmouth conurbation. The Diocese of Portsmouth covers Portsmouth, Gosport, Fareham, Havant, and the Isle of Wight.

The shorthand for determining which DAC applies: if your parish is east of a roughly Botley-to-Petersfield line you are most likely in Portsmouth Diocese; west of that line, Winchester. Your archdeacon’s office or most recent quinquennial inspection confirms.

Winchester DAC route

The Diocese of Winchester DAC is among the more progressive English DACs on church solar. Winchester Diocese committed early to the Church of England’s net zero by 2030 target, and the diocesan environmental officer engages constructively with parish solar enquiries.

Common Winchester DAC conditions:

• Black-on-black panels for any application on a listed building
• Reversible fixings — non-penetrative clamps on slate where structure allows
• Less-visible slopes preferred (north or east where viable without significantly compromising yield)
• Detailed photographic survey of pre- and post-install conditions
• Visual impact assessment from agreed viewpoints for Grade II* and Grade I

For unlisted parish halls and vicarages, the faculty process is simpler — often a faculty-not-required confirmation.

Portsmouth DAC route

The Diocese of Portsmouth DAC is one of the smaller English DACs by application volume but engages thoughtfully on solar. Portsmouth has maintained a slightly more cautious starting position than Winchester but has approved well-designed parish projects consistently since 2022. The DAC architectural advisor has developed strong familiarity with heritage-appropriate solar design.

For Isle of Wight parishes — all under Portsmouth Diocese — the faculty process is identical to mainland Portsmouth, but island logistics need factoring: ferry costs add to contractor mobilisation, and some materials need to be ordered ahead of transport windows.

The climate and yield context

Hampshire and the Isle of Wight enjoy among the best UK solar yields:

• South coast Hampshire (Southampton, Portsmouth, Fareham): 970–1,020 kWh/kWp
• Isle of Wight: 980–1,040 kWh/kWp (one of the best UK locations for solar)
• Mid Hampshire (Winchester, Basingstoke): 950–1,000 kWh/kWp
• North Hampshire (Andover, Fleet): 940–990 kWh/kWp
• New Forest: 960–1,010 kWh/kWp

For a typical 15 kW parish system: Hampshire mainland ~14,800 kWh/year; Isle of Wight ~15,200 kWh/year. Payback at parish-scale typically 7–10 years without grants, 3–6 years with.

Capital schemes

• Winchester Diocesan Board of Finance — capital grants programme with environment-specific allocations; the Winchester Net Zero Programme is one of the more developed in the south of England
• Portsmouth Diocesan Board of Finance — similar capital scheme, somewhat smaller in absolute terms
• Hampshire County Council — community energy projects occasional grant rounds
• Solent LEP / Solent Freeport — the Solent Freeport Enhanced Capital Allowances apply to designated freeport tax zones around Southampton and Portsmouth; some church properties in the freeport zone may benefit from tax treatment on capital improvements
• Buildings for Mission — Church of England national programme; both Winchester and Portsmouth dioceses have active DNO support for BfM applications
• Listed Places of Worship VAT Grant Scheme — UK-wide

Grant stacking for Hampshire parishes

For a 20 kW installation on a Winchester Diocese Grade II Victorian church and hall:

Grant source	Amount	Basis
Buildings for Mission	£11,000	44% of gross capex
Winchester Diocesan capital	£6,500	Net Zero Programme grant
Listed Places of Worship VAT	£4,167	20% VAT on listed church portion
Parish reserves	£3,333	Balance from PCC capital fund
Total project cost	£25,000	20 kW, church + hall
Net to PCC	£3,333	13% of capex

Winchester Diocese parishes benefit from one of the more developed combined grant routes in England. The diocesan environmental officer’s active involvement in BfM applications means that Winchester parishes applying in a strong round regularly achieve 85–90% combined grant coverage.

What makes Hampshire solar distinctive

The New Forest: New Forest parishes sit within a National Park with enhanced landscape sensitivity. Solar applications in the National Park require careful heritage and landscape assessment — planning authority consultation is more detailed, and visual impact from key viewpoints (including public rights of way in the forest) is assessed carefully. We have delivered New Forest parish applications that achieved consent through thorough pre-application engagement with the National Park Authority and the DAC.

Isle of Wight opportunity: The IoW has the highest solar yield of any part of the UK accessible by ferry. Island parishes typically have low electricity demand relative to mainland equivalents (smaller congregations, less commercial activity) but very high generation potential. Battery storage is particularly valuable on the island — the IoW has an isolated grid that benefits from local generation storage, and IoW PCCs have benefited from island-specific energy funding.

Hampshire’s medieval estate: Hampshire has a high density of Saxon and early Norman foundations — the county was the heartland of early English Christianity. Several Grade I churches with pre-Conquest origins require the full Historic England pre-application route. The Winchester DAC has extensive experience with this.

Worked example — a Winchester Diocese village parish

The building: A 12th-century Grade II* flint-and-stone parish church in mid-Hampshire with a 1960s unlisted village hall on adjacent land. Sunday congregation of 45. Hall used four days per week for village activities. Annual electricity bill: £4,800.

The system: 13 kW — 6 kW black-on-black in-roof on the vestry south slope (listed church, Historic England consulted: “no objection”) and 7 kW standard panels on the village hall flat roof.

Consent: Winchester DAC faculty granted in 15 weeks (Historic England consultation added 4 weeks). Historic England consultation pre-application meant no surprises at formal submission.

Grant stack: Winchester Diocesan capital £5,500 + Buildings for Mission £8,000 + LPW VAT £2,500 = £16,000 grants. Gross capex: £18,000. Net to PCC: £2,000.

Year 1 performance: Generation 12,400 kWh, self-consumption 62%, annual saving: £3,000. Simple payback on net cost: 0.7 years. Payback on gross capex: 6.0 years.

Frequently asked questions — Hampshire parishes

Does the Isle of Wight’s isolated grid affect solar economics? The IoW has a slightly different electricity pricing structure reflecting island distribution costs. In some tariff periods, IoW electricity has been more expensive than mainland rates — which makes self-consumption even more valuable. Battery storage is particularly economically justified on the IoW. The IoW Council has also run specific renewable energy grant rounds for community buildings.

How does the New Forest National Park affect the consent process? New Forest NPA planning policy supports renewable energy but requires careful landscape assessment. Visual impact from public viewpoints in the Forest is assessed specifically. We have delivered New Forest parish applications successfully by: choosing roof slopes facing away from principal Forest viewpoints, specifying black-on-black panels, and engaging the NPA planning officer pre-application to agree the assessment methodology. Plan for 4–6 additional weeks in the consent timeline for NPA consultation.

Can both Winchester and Portsmouth diocesan grants be applied to a multi-building parish? If all buildings are within the same diocese, one diocesan application covers all. If the parish straddles the Winchester/Portsmouth boundary (unusual but not impossible), you may need to establish which diocese covers the principal church building and apply to that one.

Request our free feasibility report for a Hampshire parish assessment. See also our Winchester Diocese page, Portsmouth Diocese page and heritage design service.