Latest News January 2020

PV Technical Workgroup

LHW are the recommended Technical Adviser for Emazys in the UK to undertake PV diagnostic testing and in particular Series & Shunt Reistance testing. in 2019, LHW successfully undertoook over 500 tests on projecrts from domestic roof tops, commercial roof tops and solar farms.  The knowledge and experience gained is helping define future test regimes,

Off Grid Feasibility - Seychelles

LHW have undertaken a detailed PV/generator feasibility study in the Seychelles for a large Multi MW food processing factory.  

Climate Change Emergency - PV Energy Feasibility

LHW are currently workong on 4 PV farm projects totally 50MWp moving from feasibility to delivery for local authorities that have declared climate change emergencies. 

Latest News June 2020

Zero Carbon Homes

As part of a team, LHW have been working closely with a number of experts looking at  on /offsite site electrical and heat generation to determine optimal solution for zero carbon new build home construction. LHW are doing the PV/battery/wind/Heat pump, site demand modelling. 

Reverse Engineering

LHW were engaged to reverse engineer a totally unlabelled PV system, and identify the reasons for poor performance. This involved IV curve, Series resistance, module/string mapping, performance testing and production of drawings.

Heat Pump Feasibility

Following successful PV installation of 75kWp, a local authority engaged LHW to undertake a feasibility for adoption of heat pumps at a large 85 bed education and outdoor centre. This included IR verified heat loss, and full review of ASHP, Borehole and Ground collector systems.

Latest News May 2020

Professional Recognition

After 35 years in the Energy and Electricity industry  The Founder of LHW has been  elected  as a Fellow of the IET and the Energy Institute

System Modelling 

In April LHW have  undertaken PV verification  modelling for over 500MWp of solar PV projects in South and North America and Europe.

IR Surveys

Though PV Farm IR surveys are not core business, LHW offer this service as part of a more integrated offering involving electrical testing at ground level. This encompasses IV Curve, Series, Shunt and Riso, as well as EL.and system performance verification.

Latest News April 2020

Technical  Training - PV analysis

LHW have been engaged by a forward thinking Asset owner & their O&M provider to provide technical training on PV testing methodologies used to help root cause analysis of PV system underperformance.

PV System modelling

In a month when travel was challenging, LHW were engaged and completed over 30 PV simulation models for clients ranging from 30kWp to over 300MWp, including roof top, and ground mount in locations from Columbia, Ireland, Lake District and a pan national warehouse portfolio. In all over 400 MWp of projects were modelled.

Building Heat Loss Surveys

In March, LHW undertook a number of building heat loss surveys in the City of London, and elsewhere. The work resulted in a development of  a system modelling tool for  pragmatic determination of building "U" values of ageing building stock, fundamentally important for  heating system improvement.

Latest News March 2020

PV Installation Site Acceptance services

LHW is providing Technical Advisory services and Siite Acceptance inspection and reporting  for a London Community Energy organisation and one of the UK's largest County Councils for  nine PV rooftop and ground mount installations comprising over 500kWp of installed capacity

NHS Trust PV Feasibility

LHW have completed a detailed feasibility assignment for two NHS Trust Hospitals in England reviewing a range of options including rooft top and retrofit of car ports.  As a large energy user the NHS is loooking at ways to energy reduce costs and CO2 emmisions in a cost effective manner.

PV System performance investigation

In the first PV farm investogation of 2020, LHW undertook a range of daylight testing on a system, identifying low shunt resistance (PID) as the probable reason for system under performance. The testing , a scientifically correct and yet  not a recognised mainstream IEC testing methodology helps provide a large amount of additional information on PV system performance issues.

Latest News February 2020

Technical Advisory Role Wimpole Hall - National Trust

Since 2016 LHW have been providing Technical Advisory services to The National Trust for a large 30 borehole Ground Source Heat Pump and 400kWp PV array. In February the PV was connected to the grid concluding a very successful technical assignment

PV Feasibility

LHW have completed a detailed feasibility study with granular PV modelling of a large retirement home in London. The feasibility demonstrated that if careful Half Hour demand modelling is undertaken, the viability of solar is now in context undisputable even without subsidy. 

PV Car Port, EV & Energy Storage strategy.

LHW have undertaken a detailed energy study, technical and commercial feasibility and strategy for the adoption of EV charging, solar PV car ports and energy storage on a new build project for a local authority 

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