Alectrona
BESS brandsSunsynk is a manufacturer with a strong UK market presence and a following among installers, offering three-phase hybrid inverters and high-voltage battery systems that scale from small commercial sites up into the commercial and industrial band.
These are representative example reviews, not yet-collected customer feedback. They are written to illustrate the kind of feedback Alectrona aims to earn and are shown as design placeholders while we gather and verify reviews from our first commercial clients. Alectrona is the commercial solar trading brand of RVTC LTD.
What set Alectrona apart was the documented design pack. We had quotes from three installers, but only Alectrona handed us a full set of drawings, a single-line diagram and a design referencing BS 7671 and the G99 connection process. The whole thing read like an engineering submission rather than a sales brochure. Our M&E consultant reviewed it and signed it off without a single query. That gave the board the confidence to release the capital.
Other firms priced our roof off a satellite image and a desktop guess. Alectrona flew an in-house drone survey, fully insured and flown by a qualified commercial drone pilot, and built a 3D model of the actual roof. It picked up plant, vents and a parapet line that a flat aerial photo had completely missed, which changed the panel layout. I would rather find that out at design stage than on the day the scaffold goes up. The accuracy of that survey is the reason I trusted everything that followed.
As a finance director I was wary of being oversold a system bigger than we could use. Alectrona modelled the array against our actual half-hourly consumption data rather than an annual total, so it is sized to what we genuinely draw on site during the day. They were honest that exporting surplus is worth far less than self-consumption, and built the design around that. The capital case stacked up because the engineering was honest, not because the numbers were inflated.
We were undecided between buying outright, leasing and a PPA. Alectrona laid out all three side by side with the pros and cons of each against our balance sheet, instead of pushing the one that pays them best. They were clear about where a PPA makes sense and where capex wins, and pointed us at our own accountant for the tax treatment. The survey and design took a little longer than I expected, but the thoroughness was worth the wait. Genuinely consultative.
The install crew were tidy and well run, and worked to a clear CDM 2015 plan with a proper site induction and RAMS. What impressed me most was the handover. We received a full commissioning pack with the IEC 62446-1 test results, certification, O&M documentation and an as-built record for our maintenance team. As the people who have to live with this asset for the next twenty years, having that paperwork in order matters enormously. Nothing was left loose.
I expected the usual hard sell and got the opposite. After surveying our site Alectrona told us one roof section was not worth covering because of shading, and that a smaller, well-sited array was the better investment than filling every square metre. There was no commission-driven upselling and no pressure. For a six-figure capital project, that straight talk is exactly what you want from the people advising you. We will be using them again on our second site.
Sunsynk has built a strong UK presence on a hybrid product line that installers know how to support. The core of the range is a three-phase hybrid inverter paired with a high-voltage battery, an architecture that puts solar generation, storage and grid management through one coordinated stack rather than a set of separate boxes bolted together.
For a finance or facilities director, the relevant point is that the range scales. The three-phase hybrids run from small-commercial ratings up through larger units, and the high-voltage battery systems stack to commercial sizes. This page sets out where Sunsynk genuinely fits, how we frame its standing honestly, and how Alectrona specifies it. We are brand-agnostic; Sunsynk is one option we put forward when the project points to it.
Sized from your half-hourly load, not a per-kWh rule of thumb.
Sunsynk makes hybrid inverters and the high-voltage battery systems designed to run with them. A hybrid inverter combines the solar inverter, the battery charger and the grid interface in one unit, so generation, storage and import are managed together rather than across separate devices. On a commercial site that means fewer interfaces to coordinate and a single firmware roadmap across the system.
Through UK distribution, the range we can supply covers the commercial band:
We will not publish specific power or capacity figures here as if they were your numbers. The exact kW and kWh come from the current datasheet for the chosen model and from the project design, and they change between product generations. The system the customer gets is sized per project from a survey, so the rating on your install falls out of your load, not a catalogue line.
Sunsynk suits commercial sites that want a three-phase hybrid system from a brand the UK installer base knows well. The smaller end of the range fits offices, workshops and units where solar and a modest store sit behind one inverter. The larger three-phase hybrids and the bigger high-voltage stacks reach into warehouses, logistics depots and small production facilities, the sites that sit in the heart of the commercial band rather than at grid scale.
The fit is decided by your load and your objective, not by the badge. We size storage against your half-hourly consumption from a PV*SOL model, then choose the product family that matches that profile. Where the load or the connection points to a different maker, we say so.
Sunsynk is an established manufacturer with a strong UK presence and a wide, well-supported installer network across more than forty markets. It offers a named product warranty, and the support and spares position in the UK is one of the brand's genuine strengths. Those are sound, practical reasons to specify it on the right project.
We will not dress that up as a utility-grade bankability tier it does not hold. Sunsynk is a capable, value-strong maker; it is not in the same lender-familiar category as the largest listed inverter houses, and we will not claim a BNEF tier, a ranking, or that lenders will finance it on the strength of the badge. Where the financeability of the brand matters to your deal, we confirm the warranty terms and the bankability that fit your project, in writing for the exact product, before contract.
The brand is chosen after the survey, not before it. Our in-house insured drone survey establishes the roof and the constraints, and PV*SOL half-hourly modelling shows how the system would behave against your real consumption across the year. The battery and the hybrid inverter are then sized and specified from that picture, with the exact model and its warranted ratings confirmed from the current datasheet rather than assumed.
The assurance on the work is the engineering stack, not a domestic scheme. Every install is designed and signed to BS 7671, commissioned and verified to IEC 62446-1, connected under G99 with your network operator, and run under CDM 2015 on a JCT or NEC contract. MCS is the domestic scheme and is not the trust signal at this scale. Stored solar offsets expensive import, where export is paid far less, so the model is built around lifting the share of your own generation you use, and the brand decision follows the numbers.
The cell question matters more than the badge on a commercial store, and Sunsynk uses lithium iron phosphate (LFP) chemistry in its high-voltage battery systems. LFP has a higher thermal runaway threshold and a more benign failure mode than the nickel-manganese-cobalt cells used in some rival packs, which is why it dominates stationary commercial storage. We weigh that trade-off on every project, and the reasoning behind it is set out in full on our LFP versus NMC page.
Chemistry is only the starting point. A commercial battery is a fire-engineering question as much as an electrical one, and the assurance comes from the standards the cells and the system are built and tested to. The relevant references are IEC 62619, the safety standard for industrial secondary lithium cells and batteries, and IEC 62933, the family of standards covering grid-connected electrical energy storage systems. Installation and separation distances draw on NFPA 855, the standard for the installation of stationary energy storage systems, alongside the building and fire-safety requirements in the relevant BS EN documents and the duties the Health and Safety Executive (HSE) places on the responsible person. We confirm the certification that applies to the specific Sunsynk model from its current datasheet, and the wider design considerations are covered on our battery fire safety page rather than asserted from a brand name.
Yes, within the limits the inverter and your connection allow, and this is where the hybrid architecture earns its place. A Sunsynk three-phase hybrid can charge the battery from solar, hold it, and discharge it on a schedule, which is the basic capability behind both self-consumption and time-shifting. If your tariff has a cheap overnight window and an expensive peak, the inverter can charge when import is cheap and discharge into the peak to clip your most expensive units. We model whether that pays on your specific tariff before we propose it, and the mechanism is explained on our peak shaving and time-of-use arbitrage pages.
Any saving from that behaviour is modelled, not promised. The spread between your peak and off-peak rates, your dispatch pattern and your half-hourly profile decide whether arbitrage is worth running, so we put a figure to it from a PV*SOL model against your real consumption rather than printing a number here. Where a site is large enough to reach wholesale or balancing markets coordinated by the National Energy System Operator (NESO) under the Ofgem framework, the participation route is usually through an aggregator rather than the inverter alone, which we cover on our grid services page.
Often, and the decision turns on how your existing solar is wired rather than on the Sunsynk badge. A hybrid inverter is most natural on a new array, where the solar and the battery sit behind one device on the DC side. On a site that already has a working string inverter, retrofitting storage is usually an AC-coupled job: the Sunsynk system charges from the building supply downstream of the existing PV, so the original inverter keeps running and the battery is added alongside it. Whether AC or DC coupling suits your site is a design decision we take from the survey, not a fixed rule of the brand.
Every retrofit is treated as a fresh connection question. Adding storage changes the site export profile, so the work is notified to or agreed with your network operator under Engineering Recommendation G99 before commissioning. On our patch that operator is Northern Powergrid. The store is then sized against your half-hourly consumption rather than the rating of the existing array, because a battery is matched to your loads, not to the panels, and the way we approach sizing across any brand is set out on our battery sizing page.
It comes through the Sunsynk monitoring platform, which is one of the practical reasons the brand has its UK following. The inverter reports generation, battery state of charge, import and export, so the system behaviour is visible rather than a black box. For a facilities or finance team that matters, because the saving a battery delivers depends on it actually charging and discharging on the right schedule, and visibility is how you confirm it does.
For a single building, the inverter scheduling is usually enough to run self-consumption and a simple peak-shift. Where a site runs several inverters, or wants to bid storage into a market programme, a coordinating energy management layer sits above the hardware, which we cover on our EMS software page. We set up the schedule and the monitoring at commissioning and hand over the access, so the system is yours to see from day one.
It can be. Sunsynk's three-phase hybrid inverters scale to commercial ratings and its high-voltage battery systems stack to commercial sizes, so the range covers most of the band our sites land in. Whether it is right for your building depends on your load profile, your existing inverters and your grid connection, which is what we assess from your half-hourly data before recommending it.
We will not quote a figure here, because the honest one comes from the survey. Sunsynk publishes a range of three-phase hybrid inverter ratings and modular high-voltage battery capacities, and these differ by product generation, so a figure printed on this page would not be your figure. We size the system from your half-hourly consumption in PV*SOL and confirm the exact model's ratings from the current datasheet before contract.
Sunsynk is an established manufacturer with a strong UK presence, a wide installer network and a named product warranty, which are sound reasons to specify it. We will not claim a BNEF tier, a ranking, or that lenders will finance it on the strength of the brand, because it does not hold that utility-grade position. Where the financeability of the brand matters to your deal, we confirm the warranty and the bankability that fit your project, in writing for the exact product, before contract.
A hybrid inverter handles the solar, the battery charging and the grid interface in one device, so generation, storage and import are coordinated together. On a commercial site that means fewer interfaces to manage, one firmware roadmap and a single point of accountability for how the system behaves. Whether a hybrid or a separate battery inverter suits your site is a design decision we make from the survey.
No. Alectrona is brand-agnostic. Sunsynk is one option we put forward when the project points to it, alongside the other makers we specify from. We size the system from your half-hourly load, model it in PV*SOL, and propose the battery that fits the scale and your risk appetite, with the current product and warranty confirmed before contract.
We do not publish a price for a Sunsynk system, because the honest figure is survey-led. The cost depends on the inverter rating, how much high-voltage battery you stack, whether it is a new install or an AC-coupled retrofit, and the connection and switchgear work your site needs. We confirm the exact Sunsynk model and its warranted ratings from the current datasheet, then price the installed system from the design. See our battery storage costs and commercial solar cost pages.
From an accepted survey, a Sunsynk commercial install typically runs to a programme of a few months rather than weeks, with the grid connection usually the longest item. A G99 application to your network operator, Northern Powergrid on our patch, must be agreed before commissioning, and that timeline sits with the operator. Lead time on the specific Sunsynk inverter and battery modules, the design and any switchgear then set the build date. We give you a dated programme with the quote.
We model your half-hourly load and your solar against a battery sized from an on-site survey, so the figure you get is yours, not a from-price. Capex first, with the bankable brand that fits the project.
