Is Massive MIMO Becoming Too Expensive for 5G?
Massive MIMO helped make high-capacity mid-band 5G possible, but it comes with expensive radios, more power amplifiers, heavier processing and higher site costs. Operators are not abandoning it — they are becoming much more selective about where the capacity gain is worth the bill.
Massive MIMO is expensive, but it is not broadly becoming uneconomic for 5G. At heavily used mid-band sites, its beamforming and spectral-efficiency gains can add enough capacity to justify the higher hardware and electricity costs. The problem appears when operators install high-end Massive MIMO where traffic is too low to use that capacity. That is why networks increasingly mix 64T64R, 32T32R and simpler radio configurations rather than treating one design as the answer everywhere.
Why is Massive MIMO expensive?
A conventional radio may have four or eight transmit and receive chains. A Massive MIMO active antenna can have 32 or 64. Each active chain needs RF electronics, amplification and signal processing, while the whole unit must be mounted, powered, cooled or passively managed, connected to fronthaul and maintained.
The UK government now openly describes mobile operators as facing a difficult investment environment. Its 2026 Mobile Market Review says advanced standalone 5G deployment could require as much as £32–34 billion of industry investment by 2030, while energy and regulatory costs have also risen.
When does Massive MIMO still pay for itself?
The mistake is comparing radio prices without comparing the amount of usable network capacity they deliver. A more expensive Massive MIMO radio can still have a better total cost per gigabyte if it lets an operator serve far more traffic from an existing site.
Where spectrum is heavily loaded, Massive MIMO can serve more simultaneous users, focus energy toward them and postpone the need for extra cell sites.
If a site never gets close to its capacity limit, the operator may pay for hardware and electricity that produce little customer or revenue benefit.
This is especially relevant as 5G becomes a fixed-broadband substitute. Home routers can generate much more sustained traffic than ordinary smartphones, so the capacity economics behind services discussed in our 5G home broadband pros and cons guide matter directly to mobile operators.
The question is increasingly cost per unit of delivered capacity, not whether a Massive MIMO radio has a higher sticker price than a simpler radio.
32T32R vs 64T64R: operators do not need the biggest array everywhere
One way to control cost is to choose a smaller Massive MIMO configuration where the maximum performance of 64T64R is unnecessary. ABI Research has previously noted that operators use a mix of 32T32R and 64T64R depending on traffic, space, weight, coverage and return on investment.
So the cost pressure does not necessarily mean replacing Massive MIMO with conventional antennas. Often it means using a less aggressive Massive MIMO configuration at sites where the extra 64T64R capacity would sit unused.
UK operators are still investing in Massive MIMO
A useful counterpoint to the “too expensive” argument is what operators are actually buying. Virgin Media O2 signed a new multi-year Nokia 5G RAN agreement in March 2026 that specifically includes new energy-efficient Massive MIMO radios as part of its network transformation programme.
Nokia’s latest AirScale Massive MIMO radios are part of the operator’s ongoing 5G upgrade.
Government says advanced standalone 5G remains expensive to deploy across the country.
DSIT says mobile data traffic rose sharply between 2018 and 2025, keeping pressure on network capacity.
That explains the apparent contradiction: operators need to cut cost while simultaneously needing more capacity. Massive MIMO remains one of the main tools for extracting more usable capacity from expensive mid-band spectrum.
Massive MIMO itself is getting cheaper to run
Nokia similarly argues that modern RAN hardware and automation can reduce cost per gigabit while lowering energy use. The broader trend is toward networks that are more software-controlled and energy-aware, which is part of the longer-term evolution covered in our guide to the future of broadband and mobile connectivity.
Massive MIMO is not too expensive for 5G — but blanket deployment can be
The technology still solves a real capacity problem, particularly on busy mid-band sites. What is changing is the economics of deploying the most powerful version everywhere. Operators are increasingly matching the antenna configuration to local traffic, while vendors cut power use, weight and processing cost. The future is likely to be more selective Massive MIMO, not less 5G.
Massive MIMO cost FAQs
Is Massive MIMO too expensive for 5G?
Not universally. Massive MIMO is expensive in hardware, power and site requirements, but at busy mid-band sites its capacity and spectral-efficiency gains can still make it cheaper than adding more sites. Operators are becoming more selective about where and which Massive MIMO configurations they deploy.
Why does Massive MIMO cost more than conventional 5G radios?
Massive MIMO uses many more transmit and receive chains, power amplifiers and antenna elements, while also requiring heavier signal processing. That increases equipment cost, electricity use, site weight and integration complexity.
Is 32T32R cheaper than 64T64R Massive MIMO?
Generally yes. A 32T32R radio uses fewer active transmit and receive chains, so it can be lighter and consume less power than a comparable 64T64R design. The trade-off is lower maximum spatial capacity and beamforming capability.
Will operators stop using Massive MIMO?
No. Operators are still deploying new Massive MIMO equipment, especially in high-demand mid-band 5G areas. The trend is toward better targeting, lighter radios, improved silicon, sleep modes and software optimisation to reduce total cost.
Sources checked
This article combines current UK mobile-investment evidence with operator and equipment-vendor material on Massive MIMO capacity, power use and network economics. Older GSMA and ABI research is used only for established cost principles and configuration trade-offs, while current 2026 sources show that operators are still actively deploying the technology.
- UK Government Mobile Market Review, 2026 — UK 5G investment pressures, estimated advanced-network costs, energy pressures and mobile traffic growth.
- Nokia / Virgin Media O2, March 2026 — current UK deployment of new energy-efficient Massive MIMO radios.
- Ericsson radio portfolio — newer 32-branch and 64-branch Massive MIMO radios with claimed energy reductions of up to 25–30%.
- GSMA 5G-era network cost study — RAN total-cost pressures, Massive MIMO energy use and the importance of cost per delivered capacity.
- ABI Research Massive MIMO analysis — 32T32R versus 64T64R cost, energy, weight and deployment trade-offs.
- Ericsson RAN portfolio — current Massive MIMO performance, weight and energy-efficiency positioning.