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Solar Panels for Factories

UK Factory Solar Compliance Hub

Every regulation, scheme and reporting obligation that touches solar at a UK factory, warehouse or industrial site — explained, quantified and kept current.

Last hub review: April 2026. Next review: July 2026.

The Six Compliance Pillars

MEES & EPC

MEES E (Live) → C (2027/28) → B (2030)

73% of UK office and industrial space sits below EPC B today. £150k fines from 2030. On-site solar typically delivers a 20-40 SAP point uplift.
Carbon Border

UK CBAM 2027 & EU CBAM 2026

UK CBAM live 1 Jan 2027 for steel, aluminium, cement, fertiliser, hydrogen. On-site solar cuts embedded Scope 2 and reduces certificate cost directly.
Grid Connection

TMO4+ & G99 Applications

Ofgem's April 2025 reform replaced first-come-first-served with Gate 1/Gate 2. Under-1 MW factory rooftops largely unaffected; BESS hybrids reshaped.
Energy Audits

ESOS Phase 4 & Solar Evidence

Phase 4 compliance due 5 December 2027. Solar installs count toward mandatory action plan delivery. ESOS audits must now disclose reported action uptake.
Reporting

SECR, UK SRS & Scope 2

Narrative disclosure for SECR filers. UK SRS S1/S2 voluntary from 2026, mandatory expected 2027. Market-based Scope 2 accounting with physical solar is the gold standard.
Tax & Rates

2026 Business Rates Revaluation

51% rateable value uplift for solar PV from 1 April 2026. Improvement Relief, Transitional Relief and Freeport reliefs blunt the impact. Payback extended by only 0.2-0.5 years.

Financial & Tax Schemes

Full Expensing & 100% First-Year Allowances

From April 2023, companies paying corporation tax deduct 100% of qualifying solar capex in year one. Typical net tax saving is 25% of system cost.

Solar Finance Structures

Outright, asset finance, operating lease, PPA, private wire PPA, sleeved PPA. Compare cash flow, balance sheet and tax treatment.

Grants & Public Funding 2025-26

UK Shared Prosperity Fund, SME Net Zero Navigator, Depot Charging Scheme, regional Growth Hub schemes and Freeport Enhanced Capital Allowances.

Private Wire vs Sleeved PPA

Full UK comparison of the three live PPA structures, pricing, 2 km rule, non-commodity charge treatment and when to use each.

UK Regulatory Timeline 2026-2030

Apr 2026
Business rates revaluation live. Solar PV rateable values +51% in England & Wales.
2026
UK SRS S1/S2 voluntary phase. ISSB-aligned sustainability disclosure standards available for early adoption.
1 Jan 2026
EU CBAM definitive period. UK exporters of in-scope goods must report verified embedded emissions.
1 Jan 2027
UK CBAM live. Imports of steel, aluminium, cement, fertiliser, hydrogen carry a UK ETS-linked carbon charge.
5 Dec 2027
ESOS Phase 4 compliance deadline. Mandatory action plan reporting against prior Phase 3 recommendations.
2027-28
MEES EPC C interim target (pending government consultation response). Commercial properties below EPC C potentially unlettable.
1 Apr 2030
MEES EPC B. All commercial lettings must meet EPC B. £150k maximum fine per non-compliant property.

Need a Compliance-Ready Solar Plan?

We model MEES uplift, CBAM Scope 2 reduction, ESOS evidence, capital allowances and post-tax IRR in one report. Free for UK manufacturers and warehouse operators.

Request a Compliance Review