Independent · Source-documented
Battery energy storage, compared on the terms that actually decide a project.
Capacity and price are where storage conversations start and where they should not end. Chemistry sets cycle life. Duty cycle sets degradation. Fire code sets the site layout. End-of-life sets what the asset is worth when the warranty expires.
We publish the comparison a buyer needs before taking a vendor call — and we do not sell the equipment we write about.
Start where your decision actually sits
Four categories, because storage procurement fails in four distinct places.
Technologies
Storage Technologies
Chemistry and architecture determine cycle life, safety posture, footprint and how a system degrades. Start here.
- Lithium iron phosphate (LFP)
- Flow batteries
- Long-duration energy storage
- Sodium-ion
Applications
Applications
The same hardware serves very different business cases. The application determines sizing, duty cycle and which vendors are credible.
- Peak shaving and demand charges
- Solar-plus-storage
- Data center backup power
- Microgrids
Safety & Codes
Safety and Codes
Code compliance is not a late-stage formality. It constrains siting, spacing and enclosure choice from the first sketch.
- NFPA 855
- UL 9540 and UL 9540A
- Siting and fire service access
End of Life
Recycling and Second Life
Every battery installed today is a disposal obligation later. Residual value and recycling route belong in the original purchase decision.
- Battery recycling
- Second-life batteries
- Chain of custody and documentation
Why this site exists
Energy storage is sold by the people who manufacture it, and the trade press that covers it is funded by the same companies. The research that would settle a specification question is priced for utilities, not for the facilities manager or the developer who has to sign the purchase order.
So the default buying process is a sequence of vendor sales calls, each of which frames the comparison around whatever that vendor happens to be good at. That produces systems sized for the wrong duty cycle, layouts that fail fire code review late, and warranties that turn out not to cover the failure mode that actually occurs.
We sit outside the transaction. We do not manufacture, install, integrate or resell storage equipment, which means we have no product to defend when the honest answer is that a different technology fits the site better.
What we will and will not publish
- Verified
Claims we confirmed against a third-party registry, published standard or primary document, with the source recorded.
- Attested
Claims a supplier makes about itself that we could not independently confirm. Labelled as such, never presented as verified.
- Not published
Pricing we cannot source, performance figures from marketing material, and vendor rankings we were paid to produce. There is no paid placement on this site.
This site is being built in the open
The category structure above is live and the editorial pipeline is producing against it. Pages appear as they are researched and sourced — we would rather publish four pages that hold up than forty that repeat vendor marketing back to you.
A verified supplier directory is in development. It will launch when there are real verified records to publish, and not before.