Customer Concentration Is Not the Same as End-Market Concentration
August 24, 2026
Altsets
Research by Altsets Research
Use the LG Energy Solution to Tesla relationship to separate customer concentration from EV, energy-storage, product-mix, and manufacturing diversification.
Data used:Altsets Supply Chain Intelligence: 90k+ entities, 400k+ relationships, 20+ years of history.
Key findings
- Tesla is associated with 19.03% of LG Energy Solution revenue in the supplied relationship data, making it a concentrated customer without proving that the exposure belongs to one battery end market.
- LG Energy Solution publicly describes itself as a Tesla ESS partner and operates facilities capable of serving both EV and energy-storage demand, showing why customer concentration and end-market concentration should be analyzed separately.
A large customer relationship does not necessarily mean the supplier is exposed to only one end market. The LG Energy Solution to Tesla relationship illustrates why. Altsets associates Tesla with 19.03% of LG Energy Solution revenue and LG Energy Solution with 3.41% of Tesla's cost base.
That makes Tesla an economically important mapped customer for LG Energy Solution. It does not tell us whether the relationship is entirely electric vehicles, entirely energy storage, or a mix of products. Public company information shows why that distinction matters.
Tesla operates more than one battery-driven business
Tesla sells vehicles and energy-storage systems. Its 2026 filing says the company is expanding Megafactory production in Shanghai and California and building another Megafactory near Houston. Tesla also says growth in energy storage requires adequate battery-cell supply.
That means one battery supplier can potentially be exposed to more than one Tesla end market. Customer concentration and end-market concentration are therefore different measurements.
LG Energy Solution publicly describes itself as a Tesla ESS partner
LG Energy Solution published current 2026 material describing its role as a Tesla ESS partner. The company says its North American manufacturing network produces batteries for both electric vehicles and energy-storage systems. It also says it can flex production portfolios as market demand changes.
That public evidence establishes that LG Energy Solution participates in both EV and ESS markets and has a Tesla ESS relationship. It does not tell us how the 19.03% Altsets revenue exposure is split between those categories.
One customer can contain several demand cycles
Tesla vehicle demand can move differently from utility-scale energy-storage demand. A supplier concentrated on Tesla can therefore be:
- highly concentrated by customer;
- less concentrated by product;
- less concentrated by end market;
- exposed to different project and vehicle cycles inside one account.
Those are different forms of diversification. An investor should not infer one from another.
This matters when demand rotates
Suppose EV demand slows while grid-storage demand accelerates. A battery supplier serving both markets may have more flexibility than a customer-concentration percentage alone suggests. LG Energy Solution says its North American production system can serve both EV and ESS products.
That operating flexibility can matter when one end market weakens. It does not eliminate customer concentration. It changes the way that concentration should be interpreted.
Production flexibility is another layer
LG Energy Solution's new Lansing facility is designed to manufacture batteries for both energy-storage systems and electric vehicles. The company says the site targets more than 35 GWh of annual battery capacity at full scale. A flexible plant can allow product mix to change over time.
Again, that does not reveal Tesla-specific allocation. It shows that the supplier's manufacturing footprint is not necessarily locked to one end market.
Customer concentration can still be risky
Multiple end markets do not make a large customer harmless. A large customer can still create:
- negotiating leverage;
- pricing pressure;
- contract concentration;
- credit exposure;
- capacity commitments;
- switching risk.
If both end markets depend on the same customer, the supplier can remain commercially concentrated even while product demand is diversified. The negotiating-leverage guide addresses that separate problem.
End-market diversification needs evidence
The correct workflow is not to look at a diversified customer's website and assume the supplier serves every business. The investor needs product-specific or contract-specific evidence. In this case, LG Energy Solution itself publicly discusses Tesla ESS supply.
That is stronger evidence than simply observing that both companies participate in batteries. For other relationships, the evidence may be weaker. The supplier-product validation guide explains how to preserve that distinction.
The relationship metric should keep its original denominator
The 19.03% figure describes Tesla's importance to LG Energy Solution revenue in the Altsets relationship data. It should not be rewritten as: 19.03% of LG Energy Solution EV revenue, 19.03% of LG Energy Solution ESS revenue, Tesla's share of one specific battery chemistry, and Tesla's share of one factory. Those are different denominators. The relationship becomes more useful when public evidence adds context without changing what the metric measures.
A practical customer-versus-end-market framework
For a concentrated customer relationship, ask how much supplier revenue is associated with the customer and which products are actually sold into the relationship. Then identify the final demand categories those products serve and whether the supplier can redirect capacity between products or markets. These questions distinguish customer concentration, product concentration, end-market concentration, and manufacturing flexibility. A supplier can look concentrated on one axis and diversified on another.
Why this matters for portfolio research
Two battery companies can have similar customer-concentration percentages and very different economic risk. One may serve only passenger EVs. Another may serve vehicles, utility storage, commercial storage, and other applications.
The relationship percentage alone cannot reveal that difference. The percentage tells the investor where to look. Product, end-market, and manufacturing research tell the investor what the exposure actually means.
The Tesla supplier-network analysis shows how Tesla's broader supplier map extends beyond one component category. For metric definitions and evidence limits, read the Altsets methodology. Browse Supply-Chain Data Use Cases for other ways to decompose company relationships into investable research questions.