SECR Reporting: Reduce Emissions with Commercial Solar

Streamlined Energy and Carbon Reporting requires qualifying UK businesses to disclose energy use and emissions annually. Commercial solar directly reduces your Scope 2 emissions, energy costs, and carbon intensity ratio.

Understanding Streamlined Energy and Carbon Reporting

Streamlined Energy and Carbon Reporting (SECR) is the UK government's framework for mandatory corporate energy and carbon disclosure. Introduced in April 2019, SECR replaced the Carbon Reduction Commitment (CRC) Energy Efficiency Scheme and requires qualifying organisations to report their energy consumption and associated greenhouse gas emissions as part of their annual directors' report filed with Companies House.

SECR represents a fundamental shift in how UK businesses account for their environmental impact. Rather than being a standalone compliance exercise, energy and carbon data must now be integrated into the principal financial reporting document that shareholders, investors, and the public rely upon. This integration means that your energy performance is subject to the same level of scrutiny and accountability as your financial performance.

For businesses seeking to demonstrate meaningful progress in their SECR reports, commercial solar panel installation is one of the most impactful measures available. Solar directly reduces your Scope 2 emissions, the category that typically accounts for the largest share of a commercial organisation's carbon footprint, providing clear, quantifiable, and year-on-year improvement that is straightforward to report and verify.

Which Companies Must Report Under SECR?

SECR obligations apply to different categories of UK businesses, with reporting requirements varying by company type. Understanding which category your organisation falls into is essential for determining your specific obligations.

Criteria:

Reporting requirements:

In total, approximately 11,900 UK companies are required to report under SECR. However, a growing number of SMEs are voluntarily adopting the framework in response to pressure from investors, supply chain partners, and customers who increasingly require evidence of carbon management from their business relationships. Even where SECR is not mandatory, having robust energy and emissions data demonstrates responsible management and positions your business favourably for the anticipated expansion of mandatory climate reporting requirements.

How Solar Reduces Scope 2 Emissions for SECR

To understand how solar panels impact your SECR report, it is helpful to understand the three scopes of greenhouse gas emissions defined by the Greenhouse Gas Protocol, which forms the basis of SECR reporting methodology.

Solar impact:

For most commercial organisations, Scope 2 emissions from purchased electricity represent 40-70% of the total reported emissions. This makes Scope 2 the single most impactful category to address, and commercial solar is the most effective and cost-efficient way to do so. Every kilowatt-hour of solar electricity generated on-site directly displaces a kilowatt-hour of grid electricity and its associated carbon emissions, creating a clear and auditable reduction in your reported figures.

Quantifying Carbon Savings from Solar

Accurately quantifying the carbon savings from your solar installation is essential for SECR reporting. The calculation uses emission factors published annually by the Department for Energy Security and Net Zero (DESNZ), which reflect the carbon intensity of the UK electricity grid.

Carbon Savings Calculation

Based on DESNZ UK grid electricity emission factors. Actual savings depend on system location, orientation, and self-consumption rate. Use our solar calculator for a tailored estimate.

It is worth noting that the UK grid is progressively decarbonising as more renewable generation comes online. While this means the carbon savings per kWh of solar will gradually decrease over time, the financial savings from avoiding increasingly expensive grid electricity continue to grow. This dynamic makes early adoption of solar particularly advantageous, as you capture the maximum carbon savings in the early years when emission factors are highest, whilst benefiting from energy cost savings that increase as electricity prices rise.

SECR Reporting Methodology for Solar

The UK Government Environmental Reporting Guidelines recommend using the location-based method for reporting electricity emissions under SECR. Here is how to correctly account for solar generation in your annual report:

Record Total Energy Consumption

Report your organisation's total energy consumption in kWh, broken down by fuel type. Grid electricity consumption should reflect the actual amount purchased from your energy supplier, which will be lower than pre-solar consumption due to on-site solar generation offsetting grid imports. Solar self-consumption is reported separately as on-site renewable generation.

Calculate Greenhouse Gas Emissions

Apply the appropriate DESNZ conversion factors to each fuel type. For grid electricity, use the UK grid electricity factor (currently 0.207 kg CO2e/kWh for Scope 2). Solar generation consumed on-site has a zero emission factor. Exported solar electricity is not included in your organisational consumption and should be noted separately if material.

Report Intensity Ratio

SECR requires an intensity ratio that contextualises your emissions relative to your business size. Common ratios include tonnes of CO2e per £ million revenue, per employee, or per square metre of floor space. Solar installation directly improves this ratio by reducing the numerator (emissions) without requiring any reduction in the denominator (business activity). This is particularly valuable for growing businesses that need to demonstrate decoupling of emissions from growth.

Include Narrative on Energy Efficiency Actions

Your directors' report must include a narrative describing the energy efficiency actions taken during the reporting period. Solar installation provides compelling content for this section, demonstrating capital investment in decarbonisation, quantified emissions reductions, financial savings, and progress towards net zero targets. This narrative section is increasingly scrutinised by investors and analysts, making it an important opportunity to communicate your sustainability credentials.

State Methodology

Your report must include a brief description of the methodology used to calculate energy consumption and emissions. This should reference the GHG Protocol Corporate Standard, the DESNZ emission factors used, and the location-based approach for electricity. For organisations that also report on a market-based approach, the solar generation can be additionally presented showing zero-carbon electricity generation offsetting purchased grid electricity.

How Solar Demonstrates Progress in Annual Reports

Beyond the mandatory SECR disclosures, solar installation provides powerful material for the broader sustainability narrative in your annual report. Investors, analysts, and stakeholders increasingly evaluate companies on their environmental performance, and solar delivers a clear, positive story.

SECR and Other Reporting Frameworks

SECR does not exist in isolation. It forms part of an expanding landscape of corporate sustainability reporting requirements. Solar installation strengthens your position across multiple frameworks simultaneously, making it an efficient investment in compliance readiness.

Our commercial solar proposals include comprehensive carbon saving calculations formatted for use across all major reporting frameworks. This means a single solar installation provides the data and evidence needed for SECR, SBTi, CDP, TCFD, and other ESG reporting requirements, eliminating the need for separate assessments and consultancy fees.

The Business Case for SECR-Driven Solar Investment

Investing in solar to improve your SECR report is not merely a compliance expense. It is a strategic investment that delivers measurable financial returns whilst strengthening your competitive position in an increasingly carbon-conscious business environment.

Financial Impact of Solar on SECR-Reporting Businesses

Based on current electricity prices of 28-35p/kWh. Visit our cost guide for detailed pricing by system size.

The combination of energy cost savings, tax relief through the Annual Investment Allowance, and the strategic benefits of improved sustainability reporting makes solar one of the highest-return investments available to SECR-reporting businesses. Use our commercial solar calculator to model the specific financial and carbon impacts for your organisation.

Getting Started with Solar for SECR

Whether you are looking to improve your next SECR report or building a long-term decarbonisation strategy, our team can help you design a solar installation that maximises both your emissions reductions and financial returns.

Free Site Survey: Our engineers assess your roof space, structural capacity, and electrical infrastructure to design an optimally sized system. Request your free survey here.

Carbon Impact Modelling: Every proposal includes detailed carbon saving projections calculated using the current DESNZ emission factors, formatted for direct use in your SECR report.

Financial Modelling: We provide 25-year financial projections including energy savings, tax relief, and carbon value calculations, giving your board and finance team the complete picture.

Ongoing Monitoring: Our monitoring systems provide real-time generation data that feeds directly into your annual SECR calculations, eliminating estimation and ensuring audit-ready accuracy.

Timing Your Installation for Maximum SECR Impact

To include solar savings in your next SECR report, the installation must be commissioned and generating electricity before the end of your financial reporting period. With typical installation timelines of 8-16 weeks from survey to commissioning, we recommend beginning the process at least six months before your financial year end. Contact us today to discuss your timeline.

SECR and Solar: Frequently Asked Questions

Related Resources

Get Your Carbon Impact Assessment

Free site survey with detailed carbon saving projections for your SECR report.

SECR Key Facts

Mandatory for large companies with 250+ employees, £36M+ turnover, or £18M+ balance sheet

Report energy use, Scope 1 and 2 emissions, and intensity ratio

100kW solar saves ~18-20 tonnes CO2e annually

Typical payback of 3-5 years for qualifying businesses

SECR data supports SBTi, CDP, TCFD, and ESG reporting

Useful External Resources

Highlights

• Year-on-Year Reduction
• Solar provides a permanent, structural reduction in emissions that improves your year-on-year trajectory. Unlike one-off efficiency measures, solar delivers consistent annual savings for 25+ years, creating a sustained downward trend in your reported emissions.
• Net Zero Pathway
• Solar installation demonstrates tangible progress on your net zero commitment. With the UK targeting net zero by 2050, businesses face increasing pressure to show credible decarbonisation plans. Solar is a cornerstone measure that underpins a credible net zero strategy.
• Financial Performance
• Solar reduces energy costs whilst reducing emissions, demonstrating that environmental action and financial performance are aligned. This narrative resonates strongly with investors who recognise the growing financial risks of high-carbon operations.
• Supply Chain Requirements
• Major corporations increasingly require their suppliers to demonstrate measurable carbon reductions. Solar installation and the resulting improvement in your SECR report strengthens your position when responding to supply chain sustainability assessments.

• Science Based Targets initiative (SBTi)
• Solar directly contributes to meeting validated science-based targets for Scope 2 emissions reductions. Over 2,000 UK companies have committed to SBTi targets.
• CDP (formerly Carbon Disclosure Project)
• Solar installation improves your CDP climate change score by demonstrating capital investment in emissions reduction. Investors managing over $130 trillion in assets use CDP data.
• Task Force on Climate-related Financial Disclosures (TCFD)
• Solar reduces your exposure to climate-related transition risks (rising energy costs, carbon pricing) and demonstrates proactive risk management in TCFD disclosures.
• UK Sustainability Disclosure Standards
• The FCA is developing mandatory sustainability disclosure standards for UK companies. Having robust SECR data and demonstrable emissions reductions positions you well for these forthcoming requirements.

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