Environmental, Social and Governance (ESG) performance is no longer a concern only for large corporations or publicly listed businesses. Across the commercial, public and third sectors, organisations of all sizes are being asked to demonstrate environmental responsibility — by customers, procurement teams, lenders, investors and regulators alike.
Solar PV and battery storage can provide measurable environmental improvements while also reducing operating costs and improving energy resilience. This article explains how they support ESG objectives, carbon reporting and sustainability strategy — and what that means in practical terms for the organisations that deploy them.
What Is ESG?
ESG is a framework used to assess how an organisation manages its environmental impact, social responsibilities and governance practices. It originated in investment analysis but has become a widely adopted standard for corporate accountability across most sectors.
Environmental
How a business manages its environmental impact — including energy use, carbon emissions, waste, water and biodiversity.
Social
How a business supports its employees, customers and the communities it operates in — including health and safety, diversity and supply chain ethics.
Governance
How a business is managed and controlled — including board structure, financial transparency, risk management and ethical behaviour.
Environmental performance — the E in ESG — is increasingly scrutinised by customers, investors, lenders and procurement teams. Organisations that can demonstrate genuine, measurable environmental improvement are better placed in tenders, financing rounds, supplier assessments and stakeholder relationships than those that cannot.
Solar PV and battery storage address the environmental component directly — through measurable reductions in carbon emissions, reduced reliance on fossil-fuel-generated electricity and a visible, verifiable commitment to renewable energy.
Reducing Scope 2 Carbon Emissions
Carbon emissions are typically categorised across three scopes. Scope 1 covers direct emissions from sources owned or controlled by an organisation — such as gas boilers or vehicle fleets. Scope 3 covers indirect emissions from the supply chain.
Scope 2 covers emissions from purchased electricity — the carbon associated with the electricity a business buys from the grid. For most commercial organisations, electricity is a significant contributor to total carbon footprint.
How onsite solar reduces Scope 2 emissions
Solar panels generate electricity from sunlight at zero carbon intensity
Grid electricity in the UK carries a carbon intensity that varies by time of day and generation mix. Onsite solar generation carries none.
Every unit generated onsite replaces a unit purchased from the grid
The carbon associated with that displaced grid unit is removed from the organisation's Scope 2 calculation.
Battery storage extends the reach of that displaced generation
By storing surplus solar for later use, battery systems reduce total grid dependency — and the associated Scope 2 emissions — beyond daytime hours.
The result is a reduction in Scope 2 emissions that is directly attributable to the installation, independently verifiable through metering data and suitable for inclusion in carbon reporting.
Supporting Net Zero Objectives
Many organisations have made Net Zero commitments — pledges to reduce greenhouse gas emissions to zero, or to balance remaining emissions with equivalent removals. These commitments are increasingly formalised in carbon reduction plans, sustainability strategies and board-level targets.
Solar PV and battery storage can become a practical, operational component of a Net Zero pathway — providing long-term, measurable carbon reductions from the day of installation.
How solar and battery storage support Net Zero targets
Long-term carbon reduction
Modern solar panels carry a design life of 25 years or more — providing decades of measurable carbon benefit from a single capital investment.
Renewable energy generation
Onsite generation is directly attributable renewable energy — not a certificate or offset, but electricity generated and consumed at the point of use.
Reduced fossil-fuel dependency
Displacing grid electricity reduces an organisation's dependence on fossil-fuel-generated power and the exposure that comes with it.
Measurable progress
Generation data provides concrete evidence of carbon reduction progress — suitable for annual reporting and stakeholder communications.
ESG Reporting and Sustainability Statements
For organisations required to produce ESG reports, sustainability statements, annual reviews or carbon reduction plans, a renewable energy installation provides a concrete, independently verifiable piece of evidence to include.
Unlike many sustainability initiatives — which involve policy changes, behavioural programmes or aspirational targets — a solar installation generates a continuous stream of real operational data that can be reported with precision.
| Metric | Notes |
|---|---|
| Annual renewable energy generation (kWh) | Directly measurable from system monitoring |
| Estimated CO₂ reductions (tonnes per year) | Calculated using grid carbon intensity data |
| Percentage of electricity generated onsite (%) | Self-consumption as a proportion of total consumption |
| Reduction in grid electricity consumption (kWh) | Year-on-year comparison against pre-installation baseline |
| Reduction in electricity costs (£) | Financial evidence of operational improvement |
These metrics can be included in ESG reports, sustainability sections of annual accounts, environmental policies, carbon reduction plans and supply chain questionnaires — providing tangible evidence of environmental action rather than aspiration.
Why Procurement Teams Care About Sustainability
Environmental performance is increasingly embedded in procurement and supplier selection processes. Across the public and private sectors, organisations are asking their suppliers to demonstrate environmental initiatives and carbon reduction measures as part of formal evaluation criteria.
Organisations increasingly requiring sustainability evidence
- Local Authorities
- Schools and Academies
- Universities
- NHS Trusts
- Housing Associations
- Corporate Supply Chains
- Central Government Frameworks
Tender scoring
Many public sector tenders include environmental criteria worth 10–20% or more of the overall evaluation score. Demonstrating a renewable energy installation can contribute directly to this.
Framework agreements
Suppliers seeking access to framework agreements — particularly in public sector and NHS procurement — are often required to evidence environmental management and carbon reduction activity.
Corporate supply chains
Large corporate buyers increasingly pass ESG expectations through their supply chains. Suppliers that cannot demonstrate environmental initiatives risk losing contracts as corporate ESG programmes mature.
Supporting ISO 14001 Objectives
ISO 14001 is the international standard for environmental management systems. It requires organisations to identify their environmental impacts, set objectives for improvement and demonstrate measurable, continuing progress over time.
Solar PV and battery storage can directly support ISO 14001 objectives in several practical ways:
Reduced environmental impact
Lower grid electricity consumption means lower carbon emissions — a direct, measurable environmental improvement.
Lower energy consumption
Self-generated renewable electricity reduces the total volume of energy purchased from external sources.
Continuous improvement
Solar generation data provides an ongoing performance baseline, supporting ISO 14001's requirement for measurable improvement.
Environmental performance monitoring
Modern inverter and battery platforms provide granular generation and consumption data suitable for management system reporting.
Omni3 holds ISO 14001 certification and operates to ISO-aligned environmental management processes. We understand the practical requirements of environmental management systems and can advise on how a solar installation supports them.
Carbon Reduction vs Carbon Offsetting
It is worth being precise about the distinction between carbon reduction and carbon offsetting — because they are not the same thing, and they are not treated equally by sustainability frameworks, procurement criteria or investors.
Carbon Offsetting
Paying for projects elsewhere — tree planting, renewable energy in other countries, industrial gas destruction — that compensate for emissions you continue to produce. The underlying emissions are not reduced. Scrutiny of offsetting claims is increasing.
Carbon Reduction
Actually reducing emissions at source — by generating renewable energy, improving efficiency or switching to lower-carbon processes. This is what most credible frameworks, procurement criteria and sustainability standards require. Solar energy is an operational carbon reduction measure.
Solar PV generates renewable electricity that directly displaces grid electricity. That is a reduction in actual carbon emissions — not a compensatory payment made elsewhere. For organisations seeking to demonstrate genuine environmental progress, this distinction matters.
Energy Resilience and Sustainability
Battery storage adds a resilience dimension to a solar installation that is increasingly relevant for commercial and public sector organisations. The ability to store surplus solar generation and manage grid dependency provides both environmental and operational benefits.
How battery storage supports sustainability objectives
Store excess solar generation
Rather than exporting surplus at a low rate, battery storage holds that generation for use during peak demand periods — maximising self-consumption and the associated carbon benefit.
Reduce peak demand
Battery discharge during high-tariff periods reduces grid draw at the times when grid carbon intensity is often highest — improving the carbon performance of the system further.
Improve energy resilience
Continued operation during brief grid interruptions reduces reliance on grid infrastructure and supports business continuity.
Enable smarter energy management
Integration with time-of-use tariffs allows energy to be drawn from the grid during low-carbon, low-cost overnight periods — reducing both cost and carbon intensity.
Omni3 installs battery storage systems from EcoFlow, Sigenergy and SolaX — modern energy management platforms that integrate solar generation, battery storage and grid management with real-time monitoring and smart tariff optimisation.
Sustainability Can Also Improve Profitability
Environmental and financial performance are not in opposition. Solar PV and battery storage deliver genuine sustainability benefits — and they also reduce operating costs, improve cash flow and can strengthen EBITDA.
The financial case runs alongside the environmental one
Lower operating costs
Reduced electricity bills improve margins directly without requiring additional revenue.
Improved cash flow
Lower monthly energy expenditure frees working capital for operational use.
Reduced energy price exposure
Self-generated electricity is insulated from grid price volatility.
Stronger EBITDA performance
Energy cost savings flow to the bottom line, improving the profitability measure on which many businesses are valued.
For a more detailed examination of how solar energy affects EBITDA and business valuation, see our article: How Solar Energy Can Increase EBITDA and Business Value.
Green Credentials Businesses Can Demonstrate
A solar and battery installation provides a range of verifiable environmental credentials that can be included in sustainability communications, tender submissions, ESG reports and stakeholder presentations.
Renewable energy generation
Reduced carbon emissions
Net Zero progress
Lower Scope 2 emissions
Improved ESG reporting
Environmental leadership
Commitment to sustainability
Energy resilience
Funding, Incentives and Export Opportunities
Alongside the operational and sustainability benefits, there are a number of financial mechanisms available to commercial organisations investing in solar and battery storage. The availability and terms of these change over time, so we recommend seeking current advice before making investment decisions.
Smart Export Guarantee (SEG)
Commercial electricity generators exporting surplus solar electricity to the grid may be eligible for SEG payments. The rate varies between energy suppliers and tariff types. Eligibility conditions apply.
Business Rates Relief
Renewable energy installations may benefit from business rates relief under certain circumstances. Eligibility and applicable reliefs vary and should be assessed based on specific circumstances with professional advice.
Regional Decarbonisation Grants
Various regional and sector-specific grant schemes have provided funding for commercial decarbonisation projects in recent years, including solar and battery installations. Availability varies significantly by region, sector and timing. We encourage businesses and public sector organisations to investigate current opportunities with their local authority or sector body.
Real-World Example: Commercial Property
To illustrate the practical impact, consider a commercial property with a typical energy consumption profile.
Illustrative commercial property scenario
100,000 kWh
Annual electricity consumption
40,000 kWh
Annual solar generation
40% of grid draw
Estimated annual saving
Outcomes
- Reduced grid consumption — lower Scope 2 emissions attributable to the organisation
- Measurable CO₂ reduction — quantifiable and reportable against sustainability targets
- Improved sustainability reporting — annual generation and carbon metrics available from system monitoring
- Reduced operating costs — lower electricity bills, improved cash flow and EBITDA performance
- Demonstrable ESG action — verifiable evidence of renewable energy investment for procurement, reporting and stakeholder communications
Figures are illustrative. Actual generation and savings depend on system size, roof orientation, local irradiance, consumption profile and tariff. A site survey and energy assessment will produce site-specific figures.
Related pages
Important disclaimer. This article is intended for general information only. Environmental performance, carbon reporting standards and ESG requirements vary between organisations, sectors and jurisdictions. Grant availability and funding schemes change frequently. Nothing in this article constitutes professional environmental, financial, tax or legal advice. Independent professional advice should be obtained where required. Last updated June 2026.