Local authority · Solar & battery strategy
London Borough of Merton: maximising solar self-consumption with smarter battery storage decisions
How Merton used Quantaco to assess battery storage potential across its council estate, maximise renewable self-consumption, and support carbon reduction.
- Solar PV
- Battery storage
- Council estate
The challenge
Solar ambition was there. The right storage strategy was not.
Existing solar needed optimisation
London Borough of Merton had already invested in Solar PV systems across the council portfolio and wanted to maximise self-consumption.
Battery feasibility was unclear
The council needed to assess whether battery storage was genuinely feasible across the estate.
Procurement risk needed evidence
The authority also needed to understand the environmental impact of battery products and avoid unintended consequences.
Quantaco helped Merton test battery storage feasibility against real building performance and procurement impact, turning ambition into evidence-based decisions.
The solution
How Quantaco helped
- 01
Assess
Existing solar generation and building energy performance reviewed.
- 02
Analyse
Half-hourly building-level performance modelled.
- 03
Test feasibility
Battery storage viability assessed across sites.
- 04
Evaluate impact
Scope 3 impacts of battery technology procurement considered.
- 05
Support decisions
Evidence used to guide funding and investment choices.
Technologies modelled
Impact
Evidence-led battery storage decisions across the estate
22%
Carbon reduction
51%
Self-sufficiency
40% of sites
Feasible for battery storage
100% of battery costs saved across 60% of sites
Compared with vendor proposals
Quantaco identified where battery storage was viable and where it was not, helping the council avoid unnecessary cost and focus investment more effectively.
What this means for the council
Merton can focus investment on the sites where storage makes the most sense, while avoiding unnecessary cost where it does not.
Smarter capital allocation
Battery investment can be directed only to viable sites instead of applied uniformly across the estate.
Better carbon outcomes
The strategy supports stronger renewable self-consumption and measurable carbon reduction.
Stronger funding case
The outputs were robust enough to support a successful PSDS funding application.
Estate types in scope
- Care Homes
- Education
- Community
- Leisure
Find out where storage makes sense across your estate
Book a portfolio review and we'll show how Quantaco tests feasibility site by site.