Identifying derates on wind turbines can lead to AEP gains.
Asking whether or not a wind farm or individual turbine is curtailed isn’t in a simple yes or no answer. Derates are applied for a variety of reasons, from grid faults or balance of plant to shadow flicker, noise constraints, wildlife management or technical faults. Calculating lost energy due to derating is often difficult, but it is an important metric to measure. The relevant information often isn’t readily available to owners and operators but is hidden in different data streams and formats, such as event logs, park controller data, turbine ten minute SCADA data or set points.
Identifying and extracting the data relating to the derate from all the data received from each turbine is the first step but can take a considerable length of time if done manually. The process is simplified by implementing machine learning and artificial intelligence. Clir Renewables’ software detects and distinguishes between different types of derates for all major turbine manufacturers. With algorithms based on manufacturer specified logic and Clir Renewables’ domain expertise, derates are flagged to the owner. The corresponding losses are also highlighted, enabling owners and operators to calculate the monetary value they are missing.
Using the Clir Explore environment for further investigation can identify patterns across the farm or periods of time for different types of derates. These investigations have identified cases where individual turbines or the whole farm has excessive derates in place. By restructuring the derate plan, AEP gains are achievable. An example is farm-wide grid derating, where OEMs don’t typically use a strategy optimized on production. They often curtail the entire farm as soon as a sample turbine reaches rated output. Using Clir, it’s easy to confirm whether the entire farm is curtailed when curtailing only a few turbines would have been enough. By optimizing the curtailment strategy, the amount of lost energy is reduced, resulting in AEP gains.
Rebeck Renewables Science Team Leader, said, “Many owners and operators are unaware of the potential gains available if a derate is investigated and its implementation restructured. This is a substantial undertaking if carried out manually; however, using software designed for this purpose makes this task more streamlined.”
One owner with a grid-curtailed farm identified the site was not reaching its expected export level following analysis through the Clir software. Following a discussion with the manufacturer, this curtailment was reduced and the site now reaches its export limit. As a result, the client has realized a 0.2% increase in annual energy production gain at the site.
From one to fourteen clients in 12 months.
This month Clir Renewables is celebrating the first anniversary of opening its Glasgow office. The Glasgow base was set up, with the appointment of Craig McCall as Director of Europe, to support the expansion of their business in the region. In just a year, Clir Renewables has taken its European client base from a single client with just over 200 MW to exceeding 1GW of assets across fourteen clients.
“The last year was challenging at times as the sole person in the region initially, but it has continuously delivered rewarding moments. A few that stand out are signing the first new European client since the company started, moving to our third office space within a year, and surpassing the 1 GW mark in Europe,” said McCall.
On leaving the stability of a large organization for a start-up, McCall said, “It was extremely clear from the outset that the product was capable of more than I had witnessed in the market.” From a home office, supported by the team in Vancouver, Canada, Clir strategically targeted potential clients across the continent with excellent results securing additional projects in the UK and adding Ireland, Italy, Greece, France, Denmark, and South Africa to the list.
In the final quarter of 2018, Clir moved into its first office space in Glasgow, Scotland when Regional Manager, Brad Hodgson and, Marketing Manager, Mairead McMullin, joined the operation. An additional recruitment drive early in 2019 required a move to a larger office space. The recent addition of Marco Bianchini and Adrian Carnegie to the dedicated European team brings Clir’s global headcount to forty-two with numerous positions set to be filled in the coming months.
Clir Renewables CEO, Gareth Brown, said, “Opening the office in Glasgow was a strategic move to get a larger share of the European market. We have, and continue to build, a highly experienced team in Europe to support our clients in the region. The SaaS market for renewables in Europe is well established, and as a result, it is highly competitive. In addition to providing reporting and greater visibility for owners on their assets, our highly qualified team’s ability to support clients with clearly defined actions to improve performance and reduce costs has set us apart in the global market.”
Clir Renewables now supports over 4 GW of assets globally and continues to expand its European operation through the Glasgow base.
Clir Renewables shortlisted for start-up of the year at the European Wind Investment Awards
Wind optimisation software company Clir Renewables is named on the shortlist for the European Wind Investment Awards in the start-up category. The inaugural European Wind Investment Awards celebrate best practice in the European wind industry as it transitions to a zero-subsidy future. Hosted by A Word About Wind, the award winners will be announced at a black-tie dinner in London this October.
Clir Renewables provides a solution developed for wind farm owners, designed by renewable energy experts. The cloud-based AI platform provides asset managers and owners with tools to maximise annual energy production and provide clarity on portfolio performance. Founded in early 2017, the company now supports over 4 GW of assets worldwide with clients typically seeing increases of up to 5% in Annual Energy Production in the first year.
Craig McCall, Global Director of Business Development, said “We’re delighted to make the shortlist. It is great for the Clir Renewables team to receive industry recognition for all the hard work put in over the last two and a half years. We face tough competition in our category but wish everyone shortlisted the best of luck and look forward to the awards ceremony.”
The start-up category recognises the progression and positive impact of companies who entered the wind industry within the last five years. Clir Renewables is competing with High Speed Energy and Ripple Energy for the prize.
View the full shortlist